{"id":4854,"date":"2026-11-10T14:44:12","date_gmt":"2026-11-10T14:44:12","guid":{"rendered":"https:\/\/www.chess.lumn.eu\/wordpress\/2026\/11\/10\/meta-moteur-andromeda\/"},"modified":"2026-11-10T14:44:12","modified_gmt":"2026-11-10T14:44:12","slug":"meta-moteur-andromeda","status":"publish","type":"post","link":"https:\/\/www.chess.lumn.eu\/wordpress\/2026\/11\/10\/meta-moteur-andromeda\/","title":{"rendered":"M\u00e9ta-moteur &#8216;Shahmatic Andromeda&#8217; : huit champions valent-ils mieux que quatre ?"},"content":{"rendered":"\n<!doctype html>\n<html lang=\"fr\">\n<head>\n<meta charset=\"utf-8\">\n<meta name=\"viewport\" content=\"width=device-width, initial-scale=1\">\n<title>Andromeda : huit champions, un arbitre<\/title>\n<link rel=\"preconnect\" href=\"https:\/\/fonts.googleapis.com\">\n<link rel=\"preconnect\" href=\"https:\/\/fonts.gstatic.com\" crossorigin>\n<link 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auto}\n<\/style>\n\n<\/head>\n<body>\n\n<article class=\"naum-body\">\n<p class=\"eyebrow\">Laboratoire \u00b7 m\u00e9ta-moteur<\/p>\n<h1>Huit champions valent-ils mieux que quatre&nbsp;?<\/h1>\n<p class=\"chapeau\">Apr\u00e8s Orion, Pl\u00e9iades et Crux, voici Andromeda&nbsp;: les quatre moteurs de Crux, Shredder&nbsp;7, Fritz&nbsp;9, Junior&nbsp;8 et Hiarcs&nbsp;8, rejoints par Chess Tiger&nbsp;2007, Fruit&nbsp;2.1, ProDeo&nbsp;2.0 et The King&nbsp;3.50, avec toujours Stockfish&nbsp;18 en arbitre. Il vient de terminer un gauntlet de 191&nbsp;parties contre vingt moteurs modernes. R\u00e9sultat&nbsp;: <strong>3493&nbsp;Elo<\/strong>, soit pr\u00e8s de 100&nbsp;points de plus que Crux, et une place dans le classement du laboratoire juste sous les moteurs \u00e0 r\u00e9seau de neurones.<\/p>\n<div class=\"stats\">\n  <div class=\"stat\"><b>3493<\/b><span>cote Ordo, 191 parties, 27<sup>e<\/sup> sur 227<\/span><\/div>\n  <div class=\"stat\"><b>+586<\/b><span>au-dessus de la moyenne des membres (2907)<\/span><\/div>\n  <div class=\"stat\"><b>+516<\/b><span>au-dessus du meilleur membre, Shredder&nbsp;7 (2977)<\/span><\/div>\n  <div class=\"stat\"><b>+97<\/b><span>au-dessus de Crux (3396), avec quatre membres de plus<\/span><\/div>\n<\/div>\n\n<h2><span class=\"lead-num\">1.<\/span>De Crux \u00e0 Andromeda<\/h2>\n<p>Crux avait r\u00e9pondu \u00e0 la question pos\u00e9e par Pl\u00e9iades&nbsp;: oui, le principe du m\u00e9ta-moteur tient encore quand les membres sont d\u00e9j\u00e0 tr\u00e8s forts. Quatre moteurs \u00e0 2900 gagnaient 478&nbsp;points sur leur moyenne. Restait la question suivante, pos\u00e9e \u00e0 la fin de l&#8217;article sur Crux&nbsp;: <strong>plus de membres, est-ce encore plus de gain&nbsp;?<\/strong> Orion (trois membres) gagnait 528&nbsp;points, Pl\u00e9iades (sept) en gagnait 774. Andromeda est fait pour le v\u00e9rifier \u00e0 haut niveau&nbsp;: on garde les quatre membres de Crux et on en ajoute quatre, tous du m\u00eame \u00e2ge et du m\u00eame niveau, tous d&#8217;auteurs diff\u00e9rents.<\/p>\n<table>\n<thead><tr><th>Membre<\/th><th>Auteur<\/th><th class=\"num\">Cote (liste maison)<\/th><th>Dans Crux<\/th><\/tr><\/thead>\n<tbody>\n<tr><td>Shredder&nbsp;7<\/td><td>Stefan Meyer-Kahlen<\/td><td class=\"num\">2977<\/td><td>oui<\/td><\/tr>\n<tr><td>Fritz&nbsp;9<\/td><td>Frans Morsch et Mathias Feist<\/td><td class=\"num\">2971<\/td><td>oui<\/td><\/tr>\n<tr class=\"muet\"><td>ProDeo&nbsp;2.0<\/td><td>Ed Schr\u00f6der<\/td><td class=\"num\">2926<\/td><td>non \u2014 rest\u00e9 muet<\/td><\/tr>\n<tr><td>Chess Tiger&nbsp;2007<\/td><td>Christophe Th\u00e9ron<\/td><td class=\"num\">2895<\/td><td>non<\/td><\/tr>\n<tr class=\"muet\"><td>The King&nbsp;3.50<\/td><td>Johan de Koning<\/td><td class=\"num\">2879<\/td><td>non \u2014 rest\u00e9 muet<\/td><\/tr>\n<tr><td>Fruit&nbsp;2.1<\/td><td>Fabien Letouzey<\/td><td class=\"num\">2875<\/td><td>non<\/td><\/tr>\n<tr><td>Hiarcs&nbsp;8<\/td><td>Mark Uniacke<\/td><td class=\"num\">2874<\/td><td>oui<\/td><\/tr>\n<tr><td>Junior&nbsp;8<\/td><td>Amir Ban et Shay Bushinsky<\/td><td class=\"num\">2850<\/td><td>oui<\/td><\/tr>\n<tr class=\"tot\"><td>Moyenne des six membres actifs<\/td><td>six auteurs<\/td><td class=\"num\">2907<\/td><td><\/td><\/tr>\n<\/tbody>\n<\/table>\n<div class=\"callout\">\n<b>Huit annonc\u00e9s, six qui ont jou\u00e9.<\/b> Le journal d&#8217;Andromeda est sans appel&nbsp;: sur les 15&nbsp;841 d\u00e9cisions du gauntlet, The King&nbsp;3.50 n&#8217;a donn\u00e9 son avis qu&#8217;une seule fois et ProDeo&nbsp;2.0 dans 251&nbsp;positions seulement, toutes en d\u00e9but de partie. Les deux programmes, lanc\u00e9s par le relais \u00e0 travers leur interface d&#8217;origine, r\u00e9pondaient trop tard&nbsp;: leur coup arrivait apr\u00e8s la fin des 15&nbsp;secondes, et le relais le jetait avant de consulter l&#8217;arbitre. Dans 15&nbsp;590 d\u00e9cisions sur 15&nbsp;841, Andromeda a donc jou\u00e9 \u00e0 <b>six t\u00eates<\/b>, pas huit. Tout ce qui suit est calcul\u00e9 sur les six membres qui ont r\u00e9ellement vot\u00e9. Le d\u00e9faut est identifi\u00e9, il sera corrig\u00e9 pour le prochain m\u00e9ta-moteur&nbsp;; mais ce gauntlet a co\u00fbt\u00e9 151&nbsp;heures de calcul, et il ne sera pas rejou\u00e9. Autant le prendre pour ce qu&#8217;il est&nbsp;: un m\u00e9ta-moteur de six moteurs de 2900.\n<\/div>\n\n<h2><span class=\"lead-num\">2.<\/span>Comment \u00e7a marche<\/h2>\n<p>Rien ne change par rapport \u00e0 Crux. \u00c0 chaque coup, les membres re\u00e7oivent la position et r\u00e9fl\u00e9chissent <strong>en parall\u00e8le<\/strong>, 15&nbsp;secondes chacun. S&#8217;ils proposent tous le m\u00eame coup, il est jou\u00e9 directement. Sinon, <strong>Stockfish&nbsp;18<\/strong> re\u00e7oit la liste des coups propos\u00e9s <em>(go searchmoves)<\/em>, r\u00e9fl\u00e9chit environ une seconde et choisit le meilleur. L&#8217;arbitre ne compte pas les voix&nbsp;: un coup propos\u00e9 par un seul membre peut l&#8217;emporter sur un coup propos\u00e9 par cinq. Et il ne propose jamais de coup lui-m\u00eame&nbsp;: il ne choisit que parmi ceux des membres. Avec six membres qui r\u00e9fl\u00e9chissent en m\u00eame temps, Andromeda met 17,6&nbsp;secondes par coup en moyenne&nbsp;: 15 pour les membres, le reste pour la lecture des r\u00e9ponses et l&#8217;arbitrage.<\/p>\n<div class=\"callout\">\n<b>Ce que dit le journal d&#8217;Andromeda.<\/b> Pour chaque coup, Andromeda note la proposition de chaque membre, son \u00e9valuation, sa profondeur et son temps, puis le coup retenu. Sur les 191&nbsp;parties, ce journal contient <b>15&nbsp;841&nbsp;d\u00e9cisions<\/b>. Comme pour Crux, chaque position a ensuite \u00e9t\u00e9 r\u00e9\u00e9valu\u00e9e par Stockfish&nbsp;17.1, coup propos\u00e9 par coup propos\u00e9. Ces mesures servent aux sections 5 et 6.\n<\/div>\n\n<h2><span class=\"lead-num\">3.<\/span>Les chiffres<\/h2>\n<p>Andromeda a affront\u00e9 la m\u00eame \u00e9chelle de quinze moteurs modernes que Crux, de 3310 \u00e0 3604, puis cinq moteurs plus forts encore, de 3617 \u00e0 3649&nbsp;: Houdini&nbsp;5.01, Stockfish&nbsp;8, Caissa&nbsp;1.5, Komodo&nbsp;12.1.1, et une partie d&#8217;essai contre Ethereal&nbsp;12.75. Dix parties contre chacun, avec les Blancs et avec les Noirs.<\/p>\n<div class=\"tbl-wrap\"><table>\n<thead><tr><th>Adversaire<\/th><th class=\"num\">Cote<\/th><th class=\"num\">Score<\/th><th class=\"num\">+ = \u2212<\/th><th class=\"num\">Performance<\/th><\/tr><\/thead>\n<tbody>\n<tr><td>Ethereal&nbsp;12.75 <span class=\"note\">(une seule partie)<\/span><\/td><td class=\"num\">3653<\/td><td class=\"num\">0,5 \/1<\/td><td class=\"num\">0-1-0<\/td><td class=\"num\">3653<\/td><\/tr>\n<tr><td>Komodo&nbsp;12.1.1<\/td><td class=\"num\">3649<\/td><td class=\"num\">3 \/10<\/td><td class=\"num\">0-6-4<\/td><td class=\"num\">3502<\/td><\/tr>\n<tr><td>Caissa&nbsp;1.5<\/td><td class=\"num\">3629<\/td><td class=\"num\">4,5 \/10<\/td><td class=\"num\">1-7-2<\/td><td class=\"num\">3594<\/td><\/tr>\n<tr><td>Stockfish&nbsp;8<\/td><td class=\"num\">3621<\/td><td class=\"num\">3 \/10<\/td><td class=\"num\">0-6-4<\/td><td class=\"num\">3475<\/td><\/tr>\n<tr><td>Houdini&nbsp;5.01<\/td><td class=\"num\">3616<\/td><td class=\"num\">4 \/10<\/td><td class=\"num\">0-8-2<\/td><td class=\"num\">3547<\/td><\/tr>\n<tr><td>Ethereal&nbsp;11.75<\/td><td class=\"num\">3604<\/td><td class=\"num\">2 \/10<\/td><td class=\"num\">0-4-6<\/td><td class=\"num\">3363<\/td><\/tr>\n<tr><td>Wasp&nbsp;5.50<\/td><td class=\"num\">3592<\/td><td class=\"num\">4,5 \/10<\/td><td class=\"num\">1-7-2<\/td><td class=\"num\">3558<\/td><\/tr>\n<tr><td>Rebel-Extreme&nbsp;1.1<\/td><td class=\"num\">3566<\/td><td class=\"num\">4,5 \/10<\/td><td class=\"num\">0-9-1<\/td><td class=\"num\">3532<\/td><\/tr>\n<tr><td>Deep Shredder&nbsp;13<\/td><td class=\"num\">3533<\/td><td class=\"num\">5 \/10<\/td><td class=\"num\">1-8-1<\/td><td class=\"num\">3533<\/td><\/tr>\n<tr><td>Houdini&nbsp;4<\/td><td class=\"num\">3479<\/td><td class=\"num\">6,5 \/10<\/td><td class=\"num\">3-7-0<\/td><td class=\"num\">3587<\/td><\/tr>\n<tr><td>Gull&nbsp;3<\/td><td class=\"num\">3471<\/td><td class=\"num\">5 \/10<\/td><td class=\"num\">2-6-2<\/td><td class=\"num\">3471<\/td><\/tr>\n<tr><td>Deep Rybka&nbsp;4.1<\/td><td class=\"num\">3443<\/td><td class=\"num\">4 \/10<\/td><td class=\"num\">1-6-3<\/td><td class=\"num\">3374<\/td><\/tr>\n<tr><td>Critter&nbsp;1.6a<\/td><td class=\"num\">3403<\/td><td class=\"num\">8 \/10<\/td><td class=\"num\">6-4-0<\/td><td class=\"num\">3644<\/td><\/tr>\n<tr><td>Wasp&nbsp;3.75<\/td><td class=\"num\">3403<\/td><td class=\"num\">5,5 \/10<\/td><td class=\"num\">2-7-1<\/td><td class=\"num\">3438<\/td><\/tr>\n<tr><td>Strelka&nbsp;5.5<\/td><td class=\"num\">3402<\/td><td class=\"num\">6 \/10<\/td><td class=\"num\">2-8-0<\/td><td class=\"num\">3473<\/td><\/tr>\n<tr><td>Senpai&nbsp;2.0<\/td><td class=\"num\">3339<\/td><td class=\"num\">6,5 \/10<\/td><td class=\"num\">3-7-0<\/td><td class=\"num\">3448<\/td><\/tr>\n<tr><td>SF&nbsp;11 ARM9<\/td><td class=\"num\">3330<\/td><td class=\"num\">6,5 \/10<\/td><td class=\"num\">4-5-1<\/td><td class=\"num\">3439<\/td><\/tr>\n<tr><td>Naum&nbsp;4.2<\/td><td class=\"num\">3320<\/td><td class=\"num\">6,5 \/10<\/td><td class=\"num\">3-7-0<\/td><td class=\"num\">3428<\/td><\/tr>\n<tr><td>Wasp&nbsp;2.00<\/td><td class=\"num\">3319<\/td><td class=\"num\">7 \/10<\/td><td class=\"num\">4-6-0<\/td><td class=\"num\">3466<\/td><\/tr>\n<tr><td>Komodo64&nbsp;3<\/td><td class=\"num\">3310<\/td><td class=\"num\">7 \/10<\/td><td class=\"num\">4-6-0<\/td><td class=\"num\">3457<\/td><\/tr>\n<tr class=\"tot\"><td>Total<\/td><td class=\"num\">3477<\/td><td class=\"num\">99,5 \/191<\/td><td class=\"num\">37-125-29<\/td><td class=\"num\">3493<\/td><\/tr>\n<\/tbody>\n<\/table><\/div>\n<p>Le bilan est de <strong>37&nbsp;victoires, 125&nbsp;nulles et 29&nbsp;d\u00e9faites<\/strong>&nbsp;: 52&nbsp;% contre des adversaires cot\u00e9s 3477 en moyenne, 42&nbsp;points de plus que ceux de Crux. Deux parties sur trois sont encore nulles, mais Andromeda gagne deux fois plus souvent que Crux (37&nbsp;victoires en 191&nbsp;parties contre 18 en 150) et perd moins. Comme Crux, il est bien plus \u00e0 l&#8217;aise avec les Blancs (57 sur 96, 24&nbsp;victoires pour 6&nbsp;d\u00e9faites) qu&#8217;avec les Noirs (42,5 sur 95, 13&nbsp;victoires pour 23&nbsp;d\u00e9faites). Les parties sont longues&nbsp;: 91&nbsp;coups et 47&nbsp;minutes en moyenne, 151&nbsp;heures de jeu au total. Les deux ouvertures les plus jou\u00e9es sont l&#8217;Espagnole (45&nbsp;parties) et la Sicilienne (34).<\/p>\n<p>Contre les cinq moteurs les plus forts, ceux que Crux n&#8217;a pas affront\u00e9s, Andromeda tient&nbsp;: 15 sur 41, avec une performance de 3547 contre Houdini&nbsp;5.01 et de 3594 contre Caissa&nbsp;1.5. Les deux seules s\u00e9ries nettement perdues sont contre Ethereal&nbsp;11.75 (2 sur 10) et Komodo&nbsp;12.1.1 (3 sur 10).<\/p>\n<p>Ordo, qui p\u00e8se toutes les parties du laboratoire ensemble, donne <strong>3493<\/strong>.<\/p>\n<div class=\"callout\">\n<b>Aux portes du sommet.<\/b> Dans le classement du laboratoire, qui compte 227&nbsp;moteurs et machines, Andromeda est <b>27<sup>e<\/sup><\/b>. Les 26 lignes au-dessus de lui sont toutes des moteurs modernes tournant sur huit c\u0153urs du Ryzen&nbsp;: d&#8217;abord les moteurs \u00e0 r\u00e9seau de neurones (Stockfish&nbsp;18, 12 et 11, Caissa&nbsp;1.24, Lc0 sur la carte graphique, Fritz&nbsp;20, Rebel&nbsp;16, Dragon, Komodo&nbsp;14, Fire&nbsp;9.3, Wasp&nbsp;7, Ethereal&nbsp;12.75\u2026), puis les derniers grands moteurs classiques (Stockfish&nbsp;8, Houdini&nbsp;5, Komodo&nbsp;12, Xiphos, Booot, rofChade, Deep Shredder&nbsp;13, Laser). Juste derri\u00e8re Andromeda viennent Houdini&nbsp;4, Gull&nbsp;3, Rybka&nbsp;4.1, puis Crux. Autrement dit&nbsp;: <b>une r\u00e9alisation du laboratoire, faite de six programmes vieux de vingt ans, se classe au niveau des meilleurs moteurs classiques, juste sous les NNUE.<\/b> Avant Andromeda, aucun montage maison n&#8217;\u00e9tait all\u00e9 aussi haut.\n<\/div>\n\n<h2><span class=\"lead-num\">4.<\/span>Crux contre Andromeda, m\u00eames adversaires<\/h2>\n<p>La comparaison la plus juste n&#8217;est pas la cote Ordo, qui d\u00e9pend de l&#8217;ensemble des parties, mais le score contre les quinze adversaires que les deux m\u00e9ta-moteurs ont affront\u00e9s, dix parties chacun. Crux, avec quatre membres, avait fait 67,5 sur 150. Andromeda, avec les m\u00eames quatre membres plus Chess Tiger et Fruit, fait <strong>84,5 sur 150<\/strong>.<\/p>\n<div class=\"tbl-wrap\"><table>\n<thead><tr><th>Adversaire<\/th><th class=\"num\">Cote<\/th><th class=\"num\">Crux \/10<\/th><th class=\"num\">Andromeda \/10<\/th><th class=\"num\">\u00c9cart<\/th><\/tr><\/thead>\n<tbody>\n<tr><td>Ethereal&nbsp;11.75<\/td><td class=\"num\">3604<\/td><td class=\"num\">1,5<\/td><td class=\"num\">2<\/td><td class=\"num\">+0,5<\/td><\/tr>\n<tr><td>Wasp&nbsp;5.50<\/td><td class=\"num\">3592<\/td><td class=\"num\">1,5<\/td><td class=\"num\">4,5<\/td><td class=\"num\">+3<\/td><\/tr>\n<tr><td>Rebel-Extreme&nbsp;1.1<\/td><td class=\"num\">3566<\/td><td class=\"num\">4<\/td><td class=\"num\">4,5<\/td><td class=\"num\">+0,5<\/td><\/tr>\n<tr><td>Deep Shredder&nbsp;13<\/td><td class=\"num\">3533<\/td><td class=\"num\">3,5<\/td><td class=\"num\">5<\/td><td class=\"num\">+1,5<\/td><\/tr>\n<tr><td>Houdini&nbsp;4<\/td><td class=\"num\">3479<\/td><td class=\"num\">3,5<\/td><td class=\"num\">6,5<\/td><td class=\"num\">+3<\/td><\/tr>\n<tr><td>Gull&nbsp;3<\/td><td class=\"num\">3471<\/td><td class=\"num\">3,5<\/td><td class=\"num\">5<\/td><td class=\"num\">+1,5<\/td><\/tr>\n<tr><td>Deep Rybka&nbsp;4.1<\/td><td class=\"num\">3443<\/td><td class=\"num\">3,5<\/td><td class=\"num\">4<\/td><td class=\"num\">+0,5<\/td><\/tr>\n<tr><td>Critter&nbsp;1.6a<\/td><td class=\"num\">3403<\/td><td class=\"num\">5,5<\/td><td class=\"num\">8<\/td><td class=\"num\">+2,5<\/td><\/tr>\n<tr><td>Wasp&nbsp;3.75<\/td><td class=\"num\">3403<\/td><td class=\"num\">5<\/td><td class=\"num\">5,5<\/td><td class=\"num\">+0,5<\/td><\/tr>\n<tr><td>Strelka&nbsp;5.5<\/td><td class=\"num\">3402<\/td><td class=\"num\">6<\/td><td class=\"num\">6<\/td><td class=\"num\">=<\/td><\/tr>\n<tr><td>Senpai&nbsp;2.0<\/td><td class=\"num\">3339<\/td><td class=\"num\">4,5<\/td><td class=\"num\">6,5<\/td><td class=\"num\">+2<\/td><\/tr>\n<tr><td>SF&nbsp;11 ARM9<\/td><td class=\"num\">3330<\/td><td class=\"num\">6,5<\/td><td class=\"num\">6,5<\/td><td class=\"num\">=<\/td><\/tr>\n<tr><td>Naum&nbsp;4.2<\/td><td class=\"num\">3320<\/td><td class=\"num\">7<\/td><td class=\"num\">6,5<\/td><td class=\"num\" style=\"color:var(--rouge)\">\u22120,5<\/td><\/tr>\n<tr><td>Wasp&nbsp;2.00<\/td><td class=\"num\">3319<\/td><td class=\"num\">6<\/td><td class=\"num\">7<\/td><td class=\"num\">+1<\/td><\/tr>\n<tr><td>Komodo64&nbsp;3<\/td><td class=\"num\">3310<\/td><td class=\"num\">6<\/td><td class=\"num\">7<\/td><td class=\"num\">+1<\/td><\/tr>\n<tr class=\"tot\"><td>Total sur 150 parties<\/td><td class=\"num\">3435<\/td><td class=\"num\">67,5 (45&nbsp;%)<\/td><td class=\"num\">84,5 (56,3&nbsp;%)<\/td><td class=\"num\">+17<\/td><\/tr>\n<\/tbody>\n<\/table><\/div>\n<p>Douze s\u00e9ries sur quinze s&#8217;am\u00e9liorent, deux sont \u00e9gales, une seule recule d&#8217;un demi-point (Naum&nbsp;4.2). Le gain est le plus net contre les adversaires qui avaient le plus fait souffrir Crux&nbsp;: <strong>Wasp&nbsp;5.50 passe de 1,5 \u00e0 4,5<\/strong>, Houdini&nbsp;4 de 3,5 \u00e0 6,5, Critter de 5,5 \u00e0 8, Senpai de 4,5 \u00e0 6,5. Seul Ethereal&nbsp;11.75 reste une b\u00eate noire (1,5 puis 2 sur 10). Sur ces 150&nbsp;parties, Andromeda marque 17&nbsp;points de plus que Crux, ce qui vaut environ <strong>80&nbsp;points Elo<\/strong>&nbsp;; Ordo, qui tient compte aussi des 41&nbsp;autres parties contre des adversaires plus forts, donne 97.<\/p>\n<p>D&#8217;o\u00f9 vient ce gain&nbsp;? Pas de la force des nouveaux membres&nbsp;: Chess Tiger&nbsp;2007 (2895) et Fruit&nbsp;2.1 (2875) sont cot\u00e9s sous Shredder et Fritz. Il vient du nombre de propositions. Avec six membres, l&#8217;arbitre a en moyenne 2,4&nbsp;coups diff\u00e9rents sur la table par position, contre 2,1 avec quatre&nbsp;; et un bon coup que les quatre membres de Crux ne voyaient pas a maintenant deux chances de plus d&#8217;\u00eatre sur la table. La section 6 le mesure&nbsp;: Chess Tiger et Fruit ont trouv\u00e9 seuls 48&nbsp;coups d\u00e9cisifs.<\/p>\n\n<h2><span class=\"lead-num\">5.<\/span>Comment Andromeda d\u00e9cide<\/h2>\n<p>Sur les 15&nbsp;841 coups jou\u00e9s par Andromeda hors du livre d&#8217;ouvertures, les membres \u00e9taient tous d&#8217;accord 4201&nbsp;fois (<strong>26,5&nbsp;%<\/strong>), contre 33&nbsp;% pour Crux&nbsp;: plus on est nombreux, moins on est unanime. Le plus souvent il y avait deux candidats (4651&nbsp;fois), puis trois (3900), quatre (2187), cinq (766). Les six membres ont propos\u00e9 six coups diff\u00e9rents 136&nbsp;fois.<\/p>\n<table>\n<thead><tr><th>Membre<\/th><th class=\"num\">Coup retenu propos\u00e9<\/th><th class=\"num\">Seul \u00e0 le proposer<\/th><th class=\"num\">Isol\u00e9<\/th><\/tr><\/thead>\n<tbody>\n<tr><td>Chess Tiger&nbsp;2007<\/td><td class=\"num\">9343 (59,0&nbsp;%)<\/td><td class=\"num\">626<\/td><td class=\"num\">2705<\/td><\/tr>\n<tr><td>Shredder&nbsp;7<\/td><td class=\"num\">9336 (58,9&nbsp;%)<\/td><td class=\"num\">720<\/td><td class=\"num\">2920<\/td><\/tr>\n<tr><td>Junior&nbsp;8<\/td><td class=\"num\">9309 (58,8&nbsp;%)<\/td><td class=\"num\">695<\/td><td class=\"num\">3032<\/td><\/tr>\n<tr><td>Fritz&nbsp;9<\/td><td class=\"num\">9266 (58,5&nbsp;%)<\/td><td class=\"num\">640<\/td><td class=\"num\">2878<\/td><\/tr>\n<tr><td>Hiarcs&nbsp;8<\/td><td class=\"num\">9089 (57,4&nbsp;%)<\/td><td class=\"num\">575<\/td><td class=\"num\">2693<\/td><\/tr>\n<tr><td>Fruit&nbsp;2.1<\/td><td class=\"num\">9087 (57,4&nbsp;%)<\/td><td class=\"num\">530<\/td><td class=\"num\">2734<\/td><\/tr>\n<\/tbody>\n<\/table>\n<p class=\"small\">\u00ab&nbsp;Isol\u00e9&nbsp;\u00bb : le membre propose un coup que personne d&#8217;autre ne propose. \u00ab&nbsp;Seul \u00e0 le proposer&nbsp;\u00bb : ce coup isol\u00e9 est retenu par l&#8217;arbitre.<\/p>\n<p>Les six membres p\u00e8sent presque autant les uns que les autres&nbsp;: moins de deux points d&#8217;\u00e9cart entre le plus suivi, Chess Tiger, et les moins suivis, Hiarcs et Fruit. Shredder reste le membre dont les coups isol\u00e9s sont le plus souvent retenus (720&nbsp;fois), Junior le plus original (isol\u00e9 3032&nbsp;fois, et retenu 695&nbsp;fois quand il l&#8217;est). Le nouveau venu Chess Tiger est le plus suivi des six, mais c&#8217;est aussi celui qui s&#8217;isole le moins avec Hiarcs&nbsp;: il est souvent avec la majorit\u00e9.<\/p>\n<div class=\"callout\">\n<b>La majorit\u00e9 est renvers\u00e9e plus d&#8217;une fois sur trois.<\/b> Dans les 5624&nbsp;positions o\u00f9 un coup avait la majorit\u00e9 absolue des six voix, l&#8217;arbitre a pr\u00e9f\u00e9r\u00e9 un coup minoritaire <b>2087&nbsp;fois (37&nbsp;%)<\/b>. Si l&#8217;on compte aussi les simples pluralit\u00e9s (3&nbsp;contre&nbsp;2&nbsp;contre&nbsp;1, par exemple), il renverse le coup le plus propos\u00e9 4448&nbsp;fois sur 9413 (47&nbsp;%), exactement la proportion observ\u00e9e sur Crux.<br>\n<b>Les paires qui s&#8217;entendent.<\/b> Hiarcs et Fruit sont la paire la plus souvent d&#8217;accord (8797&nbsp;fois sur 15&nbsp;841), puis Chess Tiger et Fruit (8697) et Shredder et Fritz (8585). Les moins d&#8217;accord&nbsp;: Junior et Hiarcs (8252), Shredder et Junior (8276). Junior reste le franc-tireur&nbsp;; les deux nouveaux venus, Chess Tiger et Fruit, sont les plus consensuels, proches de tout le monde.\n<\/div>\n\n<h2><span class=\"lead-num\">6.<\/span>La pertinence de chaque membre<\/h2>\n\n<p>Le journal dit qui a \u00e9t\u00e9 suivi, pas qui avait raison. Pour le savoir, Stockfish&nbsp;17.1 a r\u00e9\u00e9valu\u00e9 <strong>15&nbsp;149<\/strong> positions d&#8217;Andromeda et chaque coup propos\u00e9 dans chacune d&#8217;elles, exactement comme pour Crux. Pour chaque proposition, on mesure la <em>perte<\/em>&nbsp;: l&#8217;\u00e9cart entre le meilleur coup de la position et le coup propos\u00e9, en centi\u00e8mes de pion (born\u00e9e \u00e0 3&nbsp;pions pour qu&#8217;une seule gaffe ne fausse pas la moyenne).<\/p>\n<div class=\"tbl-wrap\"><table>\n<thead><tr><th>Membre<\/th><th class=\"num\">Perte moyenne (cp)<\/th><th class=\"num\">Meilleure proposition<\/th><th class=\"num\">Gaffes propos\u00e9es (\u22651,5)<\/th><th class=\"num\">Gaffes jou\u00e9es<\/th><th class=\"num\">Coups d\u00e9cisifs seul<\/th><th class=\"num\">Erreur d&#8217;\u00e9valuation (cp)<\/th><\/tr><\/thead>\n<tbody>\n<tr><td>Shredder&nbsp;7<\/td><td class=\"num\">12,1<\/td><td class=\"num\">79,8&nbsp;%<\/td><td class=\"num\">170<\/td><td class=\"num\">36<\/td><td class=\"num\">23<\/td><td class=\"num\">53,8<\/td><\/tr>\n<tr><td>Fritz&nbsp;9<\/td><td class=\"num\">11,4<\/td><td class=\"num\">80,5&nbsp;%<\/td><td class=\"num\">162<\/td><td class=\"num\">35<\/td><td class=\"num\">33<\/td><td class=\"num\">41,4<\/td><\/tr>\n<tr><td>Chess Tiger&nbsp;2007<\/td><td class=\"num\">11,8<\/td><td class=\"num\">80,2&nbsp;%<\/td><td class=\"num\">168<\/td><td class=\"num\">45<\/td><td class=\"num\">29<\/td><td class=\"num\">54,8<\/td><\/tr>\n<tr><td>Hiarcs&nbsp;8<\/td><td class=\"num\">12,2<\/td><td class=\"num\">79,4&nbsp;%<\/td><td class=\"num\">161<\/td><td class=\"num\">42<\/td><td class=\"num\">23<\/td><td class=\"num\">\u2013<\/td><\/tr>\n<tr><td>Fruit&nbsp;2.1<\/td><td class=\"num\">11,9<\/td><td class=\"num\">79,3&nbsp;%<\/td><td class=\"num\">152<\/td><td class=\"num\">50<\/td><td class=\"num\">19<\/td><td class=\"num\">47,7<\/td><\/tr>\n<tr><td>Junior&nbsp;8<\/td><td class=\"num\">12,3<\/td><td class=\"num\">79,9&nbsp;%<\/td><td class=\"num\">183<\/td><td class=\"num\">47<\/td><td class=\"num\">39<\/td><td class=\"num\">45,9<\/td><\/tr>\n<tr class=\"tot\"><td>Andromeda (coup jou\u00e9)<\/td><td class=\"num\">6,0<\/td><td class=\"num\">\u2013<\/td><td class=\"num\">\u2013<\/td><td class=\"num\">76<\/td><td class=\"num\">\u2013<\/td><td class=\"num\">\u2013<\/td><\/tr>\n<\/tbody>\n<\/table><\/div>\n<p class=\"small\">M\u00eames d\u00e9finitions que dans l&#8217;article sur Crux. \u00ab&nbsp;Meilleure proposition&nbsp;\u00bb : le coup du membre est, \u00e0 5&nbsp;centi\u00e8mes pr\u00e8s, le meilleur des coups propos\u00e9s. \u00ab&nbsp;Gaffes jou\u00e9es&nbsp;\u00bb : les gaffes du membre qu&#8217;Andromeda a effectivement jou\u00e9es. \u00ab&nbsp;Coups d\u00e9cisifs seul&nbsp;\u00bb : le membre est le seul \u00e0 proposer le coup retenu, et ce coup vaut au moins un demi-pion de plus que toutes les autres propositions. \u00ab&nbsp;Erreur d&#8217;\u00e9valuation&nbsp;\u00bb : \u00e9cart moyen entre l&#8217;\u00e9valuation annonc\u00e9e par le membre et celle de Stockfish, hors positions d\u00e9cid\u00e9es. Hiarcs&nbsp;8 n&#8217;annonce pas son \u00e9valuation dans ce montage.<\/p>\n<p>Le chiffre le plus important est en bas du tableau. Andromeda perd en moyenne <strong>6,0&nbsp;centi\u00e8mes<\/strong> par coup, contre 7,0 pour Crux. Son meilleur membre, Fritz&nbsp;9, en perd 11,4. L&#8217;assembl\u00e9e fait donc environ <strong>47&nbsp;% d&#8217;erreur en moins<\/strong> que le meilleur de ses membres, l\u00e0 o\u00f9 Crux en faisait 38&nbsp;% de moins. Les six membres ont propos\u00e9 996&nbsp;gaffes en tout&nbsp;; Andromeda n&#8217;en a jou\u00e9 que 76.<\/p>\n<p>Le vote sans arbitre, simul\u00e9 comme pour Crux (le coup le plus propos\u00e9 est jou\u00e9, en cas d&#8217;\u00e9galit\u00e9 celui du membre le mieux cot\u00e9), aurait perdu <strong>10,5&nbsp;centi\u00e8mes<\/strong> par coup et jou\u00e9 136&nbsp;gaffes au lieu de 76. Avec six membres, le vote est un peu moins mauvais qu&#8217;avec quatre, parce que les majorit\u00e9s sont plus larges&nbsp;; mais l&#8217;\u00e9cart avec l&#8217;arbitre reste \u00e9norme. C&#8217;est toujours lui qui fait le gain.<\/p>\n<div class=\"tbl-wrap\"><table>\n<thead><tr><th>Phase de jeu<\/th><th class=\"num\">Shredder<\/th><th class=\"num\">Fritz<\/th><th class=\"num\">Tiger<\/th><th class=\"num\">Hiarcs<\/th><th class=\"num\">Fruit<\/th><th class=\"num\">Junior<\/th><th class=\"num\">Andromeda<\/th><\/tr><\/thead>\n<tbody>\n<tr><td>Sortie du livre (avant le 20<sup>e<\/sup> coup)<\/td><td class=\"num\">16<\/td><td class=\"num\">13,8<\/td><td class=\"num\">15,1<\/td><td class=\"num\">16,5<\/td><td class=\"num\">15,9<\/td><td class=\"num\">14,9<\/td><td class=\"num\"><b>5,9<\/b><\/td><\/tr>\n<tr><td>Milieu de partie (coups 20 \u00e0 45)<\/td><td class=\"num\">14,9<\/td><td class=\"num\">13,6<\/td><td class=\"num\">14,3<\/td><td class=\"num\">15<\/td><td class=\"num\">14,5<\/td><td class=\"num\">14,1<\/td><td class=\"num\"><b>6,5<\/b><\/td><\/tr>\n<tr><td>Fin de partie (apr\u00e8s le 45<sup>e<\/sup> coup)<\/td><td class=\"num\">9,4<\/td><td class=\"num\">9,5<\/td><td class=\"num\">9,6<\/td><td class=\"num\">9,5<\/td><td class=\"num\">9,4<\/td><td class=\"num\">10,7<\/td><td class=\"num\"><b>5,8<\/b><\/td><\/tr>\n<\/tbody>\n<\/table><\/div>\n<p class=\"small\">Perte moyenne en centi\u00e8mes de pion, par phase de jeu.<\/p>\n<p>Les \u00e9carts entre membres sont plus serr\u00e9s que dans Crux&nbsp;: entre 11,4 et 12,3&nbsp;centi\u00e8mes perdus par coup, et entre 79 et 81&nbsp;% de meilleures propositions. Six moteurs du m\u00eame \u00e2ge et du m\u00eame niveau se valent presque. Ce qui les distingue, ce sont leurs id\u00e9es propres.<\/p>\n<h3>Portraits<\/h3>\n<p><strong>Fritz&nbsp;9 reste le membre le plus s\u00fbr.<\/strong> Comme dans Crux, c&#8217;est lui qui perd le moins par coup (11,4), qui propose le plus souvent le meilleur coup (80,5&nbsp;%) et qui s&#8217;\u00e9value avec le plus de justesse (41&nbsp;centi\u00e8mes d&#8217;\u00e9cart avec Stockfish). Ses gaffes passent rarement&nbsp;: 35 jou\u00e9es sur 162. Dans la partie contre Caissa, c&#8217;est lui qui trouve seul 10.Ff4, le coup qui fixe l&#8217;avantage.<\/p>\n<p><strong>Junior&nbsp;8 reste l&#8217;original, et devient le plus utile en solitaire.<\/strong> Il propose le plus de gaffes (183), mais aussi le plus de coups d\u00e9cisifs que personne d&#8217;autre ne voit&nbsp;: 39. Avec cinq partenaires pour filtrer ses exc\u00e8s, ses id\u00e9es valent plus que jamais. C&#8217;est lui qui lance l&#8217;attaque de pions 16.h4 contre Caissa.<\/p>\n<p><strong>Chess Tiger&nbsp;2007 est la bonne recrue.<\/strong> Le moteur de Christophe Th\u00e9ron est le plus souvent suivi des six. Il perd 11,8&nbsp;centi\u00e8mes par coup, deuxi\u00e8me derri\u00e8re Fritz, et compte 29&nbsp;coups d\u00e9cisifs en solitaire&nbsp;: un apport net, que Crux n&#8217;avait pas. Dans la finale contre Caissa, c&#8217;est son 57.Tc7+ qui d\u00e9cide.<\/p>\n<p><strong>Fruit&nbsp;2.1 est le plus consensuel.<\/strong> C&#8217;est, avec Chess Tiger, le membre le plus souvent d&#8217;accord avec les autres, et celui qui propose le moins de gaffes (152). Revers de la m\u00e9daille, il est le moins souvent seul \u00e0 avoir raison (19&nbsp;coups d\u00e9cisifs) et ses gaffes sont celles qui passent le plus (50)&nbsp;: quand Fruit se trompe, il se trompe souvent avec la majorit\u00e9. Il renforce les bons coups plus qu&#8217;il n&#8217;en apporte.<\/p>\n<p><strong>Shredder&nbsp;7 et Hiarcs&nbsp;8 rentrent dans le rang.<\/strong> Dans Crux, Shredder \u00e9tait le membre le plus suivi et Hiarcs le plus prudent. Dans Andromeda, ils restent solides mais ne se distinguent plus&nbsp;: 23&nbsp;coups d\u00e9cisifs en solitaire chacun, et les deux pertes moyennes les plus \u00e9lev\u00e9es apr\u00e8s Junior. Leurs bonnes id\u00e9es sont d\u00e9sormais souvent vues aussi par Chess Tiger ou Fruit.<\/p>\n<p>La le\u00e7on est la m\u00eame que pour Crux, en plus net&nbsp;: aucun membre n&#8217;est inutile, et le plus fort n&#8217;est pas le plus pr\u00e9cieux. Le membre le plus faible de la liste, Junior, est celui qui apporte le plus de coups d\u00e9cisifs. L&#8217;arbitre a besoin d&#8217;id\u00e9es diff\u00e9rentes, pas d&#8217;un moteur de plus qui pense comme les autres.<\/p>\n\n\n\n<h2><span class=\"lead-num\">7.<\/span>La partie la plus extraordinaire&nbsp;: Andromeda \u2013 Caissa&nbsp;1.5, 1-0<\/h2>\n<p>Parmi les 37&nbsp;victoires, celle-ci est la plus forte&nbsp;: Caissa&nbsp;1.5, un moteur \u00e0 r\u00e9seau de neurones cot\u00e9 3629, le troisi\u00e8me adversaire le plus fort du gauntlet, battu avec une r\u00e9gularit\u00e9 de m\u00e9tronome. Dans une Sicilienne Richter-Rauzer, Andromeda prend un petit avantage d\u00e8s la sortie du livre, le fait grossir pendant 90&nbsp;coups sans jamais le laisser retomber sous le demi-pion, et mate au 94<sup>e<\/sup>. Six membres y jouent chacun leur r\u00f4le&nbsp;: Junior lance l&#8217;attaque de pions, Fritz place le fou, Chess Tiger trouve le coup qui gagne la finale, et l&#8217;arbitre renverse deux fois la majorit\u00e9 au bon moment. Un autre candidat \u00e9tait la victoire contre Houdini&nbsp;5.01 ou celles contre Wasp&nbsp;5.50&nbsp;; mais battre un moteur \u00e0 r\u00e9seau de neurones cot\u00e9 3629 avec six programmes des ann\u00e9es 2000, c&#8217;est le r\u00e9sultat le plus parlant du gauntlet.<\/p>\n<p class=\"small\">\u00c9chiquier vu du c\u00f4t\u00e9 d&#8217;Andromeda (les Blancs). Les \u00e9valuations sont donn\u00e9es du point de vue d&#8217;Andromeda.<\/p>\n<div class=\"crw\">\n<svg width=\"0\" height=\"0\" style=\"position:absolute\" aria-hidden=\"true\"><defs><g id=\"crw-white-pawn\" class=\"white pawn\"><path d=\"M22.5 9c-2.21 0-4 1.79-4 4 0 .89.29 1.71.78 2.38C17.33 16.5 16 18.59 16 21c0 2.03.94 3.84 2.41 5.03-3 1.06-7.41 5.55-7.41 13.47h23c0-7.92-4.41-12.41-7.41-13.47 1.47-1.19 2.41-3 2.41-5.03 0-2.41-1.33-4.5-3.28-5.62.49-.67.78-1.49.78-2.38 0-2.21-1.79-4-4-4z\" fill=\"#fff\" stroke=\"#000\" stroke-width=\"1.5\" stroke-linecap=\"round\"><\/path><\/g><g id=\"crw-white-knight\" class=\"white knight\" fill=\"none\" fill-rule=\"evenodd\" stroke=\"#000\" stroke-width=\"1.5\" stroke-linecap=\"round\" stroke-linejoin=\"round\"><path d=\"M 22,10 C 32.5,11 38.5,18 38,39 L 15,39 C 15,30 25,32.5 23,18\" style=\"fill:#ffffff; stroke:#000000;\"><\/path><path d=\"M 24,18 C 24.38,20.91 18.45,25.37 16,27 C 13,29 13.18,31.34 11,31 C 9.958,30.06 12.41,27.96 11,28 C 10,28 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markerHeight=\"3.2\" orient=\"auto\"><path d=\"M0,0 L10,5 L0,10 z\" style=\"fill:var(--played)\"><\/path><\/marker>\n<\/defs><\/svg>\n<div class=\"wrap\">\n<div class=\"legend\"><span class=\"chip\"><i class=\"dot d-mm\"><\/i>Shredder 7<\/span><span class=\"chip\"><i class=\"dot d-fa\"><\/i>Fritz 9<\/span><span class=\"chip\"><i class=\"dot d-ds\"><\/i>Junior 8<\/span><span class=\"chip\"><i class=\"dot d-hi\"><\/i>Hiarcs 8<\/span><span class=\"chip\"><i class=\"dot d-ti\"><\/i>Chess Tiger 2007<\/span><span class=\"chip\"><i class=\"dot d-fu\"><\/i>Fruit 2.1<\/span><span class=\"chip\"><i class=\"dot d-pd\"><\/i>ProDeo 2.0<\/span><span class=\"chip\"><i class=\"dot d-pl\"><\/i>coup jou\u00e9<\/span><\/div>\n<div class=\"stats\" aria-label=\"Chiffres de la partie\">\n  <div class=\"stat\"><span class=\"n\">86<\/span><span class=\"l\">coups d&#8217;Andromeda apr\u00e8s le livre<\/span><\/div>\n  <div class=\"stat\"><span class=\"n\">19 \/ 67<\/span><span class=\"l\">unanimes \/ tranch\u00e9s par l&#8217;arbitre<\/span><\/div>\n  <div class=\"stat\"><span class=\"n\">4 \u00b7 3 \u00b7 3 \u00b7 3 \u00b7 2 \u00b7 1<\/span><span class=\"l\">coups retenus venus d&#8217;un seul membre : Fritz, Shredder, Junior, Chess Tiger, Hiarcs, Fruit<\/span><\/div>\n  <div class=\"stat\"><span class=\"n\">16<\/span><span class=\"l\">propositions \u00e9cart\u00e9es qui co\u00fbtaient plus d&#8217;un pion<\/span><\/div>\n<\/div>\n\n<section aria-labelledby=\"crw-t-graph\">\n  <h2 id=\"crw-t-graph\">L&#8217;\u00e9valuation au fil de la partie<\/h2>\n  <div class=\"graph\"><svg id=\"crw-graph\" viewBox=\"0 0 1000 190\" role=\"img\" aria-label=\"\u00c9valuation Stockfish du point de vue d'Andromeda, coup par coup\"><\/svg><\/div>\n  <p class=\"small\">\u00c9valuation Stockfish 17.1, du point de vue d&#8217;Andromeda, born\u00e9e \u00e0 \u00b16 pions. Les points marquent les moments comment\u00e9s ; un clic place la partie \u00e0 ce coup.<\/p>\n<\/section>\n<section aria-labelledby=\"crw-t-mom\">\n  <h2 id=\"crw-t-mom\">Les moments cl\u00e9s<\/h2>\n  <p class=\"small\">Chaque diagramme montre la position avant le coup. Fl\u00e8ches : la proposition de chaque membre dans sa couleur, le coup jou\u00e9 en vert, et en pointill\u00e9 le coup de Stockfish quand aucun membre ne l&#8217;a propos\u00e9.<\/p>\n  <div class=\"moments\" id=\"crw-moments\"><\/div>\n<\/section>\n<section aria-labelledby=\"crw-t-rep\">\n  <h2 id=\"crw-t-rep\">Rejouer la partie<\/h2>\n  <div class=\"replay\">\n    <div class=\"board-col\">\n      <div id=\"crw-board\"><\/div>\n      <div class=\"controls\">\n        <button id=\"crw-b-start\" type=\"button\" aria-label=\"D\u00e9but\">\u23ee<\/button>\n        <button id=\"crw-b-prev\" type=\"button\" aria-label=\"Coup pr\u00e9c\u00e9dent\">\u25c0<\/button>\n        <button id=\"crw-b-next\" type=\"button\" aria-label=\"Coup suivant\">\u25b6<\/button>\n        <button id=\"crw-b-end\" type=\"button\" aria-label=\"Fin\">\u23ed<\/button>\n        <span class=\"cur\" id=\"crw-cur\"><\/span>\n      <\/div>\n      <div class=\"comment\" id=\"crw-comment\" aria-live=\"polite\"><\/div>\n    <\/div>\n    <div class=\"movelist\" id=\"crw-movelist\"><\/div>\n  <\/div>\n  <p class=\"small\">Fl\u00e8ches \u2190 \u2192 du clavier pour avancer et reculer.<\/p>\n<\/section>\n<footer><p>Sources : PGN du gauntlet (cutechess) et journal d&#8217;Andromeda, qui note pour chaque coup la proposition et l&#8217;\u00e9valuation annonc\u00e9e par chaque membre (Hiarcs 8 et ProDeo n&#8217;annoncent pas la leur). Six membres ont r\u00e9ellement vot\u00e9 dans cette partie : The King 3.50 est rest\u00e9 muet, ProDeo 2.0 n&#8217;a parl\u00e9 qu&#8217;une fois, au 9<sup>e<\/sup> coup. \u00c9valuations de contr\u00f4le : Stockfish 17.1, environ 0,3 seconde par position, indicatives. Shredder donne ses mats sous forme d&#8217;un grand nombre, affich\u00e9 ici \u00ab mat \u00bb.<\/p><p>Cadences : Andromeda 60\/1800 (15 s par membre et environ 1 s d&#8217;arbitre par coup), adversaire 60\/900.<\/p><\/footer>\n<\/div>\n<\/div>\n<script>\n(function(){\nconst 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Shredder et Fritz veulent garder la tension avec Ff4 (+0,26 selon Stockfish), Chess Tiger et ProDeo reculer le fou en e3 (+0,47). Junior, Hiarcs et Fruit proposent de prendre en c6 pour doubler les pions noirs : +0,84. L'arbitre retient ce coup. C'est le dernier avis de ProDeo dans cette partie : muet au coup suivant, il est abandonn\u00e9, comme dans toutes les parties du gauntlet.\"},{\"ply\":18,\"tag\":\"\",\"title\":\"10.Ff4 : Fritz seul contre cinq\",\"text\":\"Cinq membres veulent maintenir le clouage avec Fh4 (+0,29). Fritz, seul, recule le fou en f4, d'o\u00f9 il vise d6 et emp\u00eache \u2026e5 : Stockfish \u00e9value +0,96, trois fois mieux. L'arbitre ne compte pas les voix : il prend le coup de Fritz. Les cinq autres ne sont pas mauvais, ils sont simplement moins pr\u00e9cis.\"},{\"ply\":30,\"tag\":\"\",\"title\":\"16.h4 : Junior lance l'attaque\",\"text\":\"Quatre membres veulent donner l'\u00e9chec Fd3+ (+1,03), Fruit pr\u00e9f\u00e8re Fe3. Junior, seul, pousse le pion h vers le roi noir (+1,14). L'arbitre le suit. Au coup suivant, Junior sera encore seul \u00e0 proposer 17.Dd3+ (+1,10), que l'arbitre retiendra aussi : c'est lui qui donne son sens \u00e0 la partie, une attaque de pions contre le roque adverse pendant que le roi blanc est au centre.\"},{\"ply\":38,\"tag\":\"\",\"title\":\"20.gxh6 : deux voix contre quatre\",\"text\":\"Shredder, Hiarcs, Chess Tiger et Fruit veulent mettre le roi \u00e0 l'abri avec Rd2 (+1,11). Fritz et Junior prennent le pion h6 (+1,37), ce qui laisse un pion blanc plant\u00e9 en h6, \u00e0 c\u00f4t\u00e9 du roi noir, pour le reste de la partie. L'arbitre \u00e9carte la majorit\u00e9. Dans le gauntlet, cela arrive dans 37 % des cas o\u00f9 un coup a la majorit\u00e9 absolue.\"},{\"ply\":48,\"tag\":\"\",\"title\":\"25.Fg5 : l'arbitre se trompe\",\"text\":\"Quatre membres proposent h5 (+1,94). Fritz et Hiarcs pr\u00e9f\u00e8rent Fg5, que Stockfish 17.1 \u00e9value \u00e0 +1,31 seulement. L'arbitre, qui ne r\u00e9fl\u00e9chit qu'une seconde, retient Fg5. Il se trompe de six dixi\u00e8mes de pion. Un m\u00e9ta-moteur n'est pas infaillible : son arbitre est press\u00e9. Caissa r\u00e9pond 25\u2026f6 et l'affaire tourne quand m\u00eame bien.\"},{\"ply\":50,\"tag\":\"\",\"title\":\"26.Fxf6+ : le fou contre le pion f6\",\"text\":\"Coup unanime, l'arbitre n'est pas consult\u00e9. Le fou prend en f6, le fou noir reprend, et 27.exf6 cr\u00e9e un pion blanc en f6 qui, avec celui de h6, enferme le roi noir pour toujours. Chess Tiger s'\u00e9value \u00e0 +2,45, Fruit \u00e0 +0,91 : les six membres ne sont pas d'accord sur la valeur de la position, mais tous voient le coup.\"},{\"ply\":72,\"tag\":\"\",\"title\":\"37.Fxe4 : la majorit\u00e9 a raison\",\"text\":\"Trois coups candidats. Shredder, Fritz et Hiarcs prennent le pion e4 avec le fou (+3,23). Junior veut d'abord \u00e9changer les tours (+2,35), Chess Tiger et Fruit prendre en d4 (+2,36). L'arbitre suit la majorit\u00e9, qui vaut presque un pion de plus. La position est gagn\u00e9e : les pions f6 et h6 tiennent le roi noir, et Andromeda a un pion de plus.\"},{\"ply\":98,\"tag\":\"\",\"title\":\"50.Dxc4 : trois paires, trois coups\",\"text\":\"Un partage parfait : Shredder et Hiarcs proposent l'\u00e9change des dames (+3,08), Fritz et Fruit Tg1 (+3,16), Junior et Chess Tiger Ce3 (+2,69). Un vote n'aurait pas pu trancher. L'arbitre choisit l'\u00e9change des dames, \u00e0 huit centi\u00e8mes du meilleur coup, et Andromeda entre dans une finale tour et cavalier contre tour et cavalier avec un pion de plus et le pion h6 toujours vivant.\"},{\"ply\":112,\"tag\":\"\",\"title\":\"57.Tc7+ : Chess Tiger seul\",\"text\":\"Cinq membres veulent attaquer le pion a5 avec Tc5 (+2,30). Chess Tiger, seul, donne l'\u00e9chec en c7 (+2,82), qui chasse le roi noir en d8, loin de ses pions. L'arbitre retient le coup. Chess Tiger est le membre dont le coup est retenu le plus souvent dans le gauntlet, mais c'est l'une des rares fois de cette partie o\u00f9 il est seul \u00e0 avoir raison.\"},{\"ply\":170,\"tag\":\"\",\"title\":\"86.Rc5 : quatre membres voient le mat\",\"text\":\"Shredder, Fritz, Chess Tiger et Fruit annoncent un mat (Fritz en 23 coups, Fruit en 10) avec Rc5, qui soutient le pion c. Junior et Hiarcs proposent Ra5, qui ne gagne \u00ab que \u00bb dix pions. L'arbitre suit les quatre. Le pion c va \u00e0 dame, et le roi noir, qui erre depuis le coup 57, est mat\u00e9 au 94e coup.\"},{\"ply\":186,\"tag\":\"\",\"title\":\"94.Tg7#\",\"text\":\"Caissa 1.5 \u00e0 huit threads, cot\u00e9 3629, soit 136 points au-dessus d'Andromeda, est battu avec les Noirs sans jamais avoir eu la moindre contre-chance : l'\u00e9valuation de Stockfish n'est jamais redescendue sous +0,7 apr\u00e8s le dixi\u00e8me coup. Fritz a ouvert la porte (10.Ff4), Junior a lanc\u00e9 l'attaque (16.h4, 17.Dd3+), les six membres ont vu ensemble le sacrifice 26.Fxf6+, et Chess Tiger a trouv\u00e9 le seul coup de la finale que personne d'autre ne voyait.\"}],\"ids\":{\"P\":\"crw-white-pawn\",\"N\":\"crw-white-knight\",\"B\":\"crw-white-bishop\",\"R\":\"crw-white-rook\",\"Q\":\"crw-white-queen\",\"K\":\"crw-white-king\",\"p\":\"crw-black-pawn\",\"n\":\"crw-black-knight\",\"b\":\"crw-black-bishop\",\"r\":\"crw-black-rook\",\"q\":\"crw-black-queen\",\"k\":\"crw-black-king\"}};\nconst NS=\"http:\/\/www.w3.org\/2000\/svg\";\nconst COL={SH:\"mm\",FR:\"fa\",JU:\"ds\",HI:\"hi\",TI:\"ti\",FU:\"fu\",PD:\"pd\",KI:\"ki\"};const FLIP=false;\nconst NAME={SH:\"Shredder 7\",FR:\"Fritz 9\",JU:\"Junior 8\",HI:\"Hiarcs 8\",TI:\"Chess Tiger 2007\",FU:\"Fruit 2.1\",PD:\"ProDeo 2.0\",KI:\"The King 3.50\"};\nconst START=\"rnbqkbnr\/pppppppp\/8\/8\/8\/8\/PPPPPPPP\/RNBQKBNR\";\nconst fenBefore=i=>i<=0?START:D.plies[i-1].fen;\nfunction moveLabel(i){const n=Math.floor(i\/2)+1;return i%2===0?n+\".\":n+\"\u2026\"}\nfunction fmt(v){if(v===null||v===undefined)return\"\u2013\";if(Math.abs(v)>=9000)return v>0?\"mat\":\"\u2212mat\";const s=(v\/100).toFixed(2).replace(\".\",\",\");return(v>0?\"+\":v<0?\"\u2212\":\"\")+s.replace(\"-\",\"\")}\nfunction sqXY(s){let f=s.charCodeAt(0)-97,k=+s[1];if(FLIP){f=7-f;k=9-k}return[f*45+22.5,(8-k)*45+22.5]}\nfunction boardSVG(fen,arrows,last){\n  const svg=document.createElementNS(NS,\"svg\");svg.setAttribute(\"viewBox\",\"0 0 360 360\");svg.setAttribute(\"class\",\"bd\");svg.setAttribute(\"role\",\"img\");\n  let h=\"\";\n  for(let r=0;r<8;r++)for(let f=0;f<8;f++){const light=(r+f)%2===0;h+=`<rect x=\"${f*45}\" y=\"${r*45}\" width=\"45\" height=\"45\" style=\"fill:var(${light?\"--sq-light\":\"--sq-dark\"})\"\/>`}\n  if(last){for(const s of[last.slice(0,2),last.slice(2,4)]){const[x,y]=sqXY(s);h+=`<rect x=\"${x-22.5}\" y=\"${y-22.5}\" width=\"45\" height=\"45\" style=\"fill:var(--played)\" opacity=\".28\"\/>`}}\n  for(let f=0;f<8;f++)h+=`<text x=\"${f*45+41}\" y=\"356\" font-size=\"8\" text-anchor=\"end\" style=\"fill:var(--coord);font-family:var(--f-mono)\">${\"abcdefgh\"[FLIP?7-f:f]}<\/text>`;\n  for(let r=0;r<8;r++)h+=`<text x=\"2\" y=\"${r*45+9}\" font-size=\"8\" style=\"fill:var(--coord);font-family:var(--f-mono)\">${FLIP?r+1:8-r}<\/text>`;\n  const rows=fen.split(\"\/\");\n  rows.forEach((row,r)=>{let f=0;for(const c of row){if(\/\\d\/.test(c)){f+=+c;continue}h+=`<use href=\"#${D.ids[c]}\" transform=\"translate(${(FLIP?7-f:f)*45},${(FLIP?7-r:r)*45})\"\/>`;f++}});\n  (arrows||[]).forEach((a,k)=>{const[x1,y1]=sqXY(a.uci.slice(0,2)),[x2,y2]=sqXY(a.uci.slice(2,4));const dx=x2-x1,dy=y2-y1,L=Math.hypot(dx,dy)||1;const off=a.off||0;const ox=-dy\/L*off,oy=dx\/L*off;const ex=x2-dx\/L*12,ey=y2-dy\/L*12;\n    h+=`<line x1=\"${x1+ox}\" y1=\"${y1+oy}\" x2=\"${ex+ox}\" y2=\"${ey+oy}\" style=\"stroke:var(--${a.col===\"pl\"?\"played\":a.col===\"sf\"?\"ink\":a.col})\" stroke-width=\"${a.w||6}\" stroke-linecap=\"round\" ${a.dash?'stroke-dasharray=\"6 6\"':''} opacity=\"${a.op||.85}\" marker-end=\"url(#crw-ah-${a.col})\"\/>`});\n  svg.innerHTML=h;return svg}\nfunction arrowsFor(i){\n  const p=D.plies[i];const out=[];const seen={};\n  (p.props||[]).forEach(([who,san,uci])=>{if(uci===\"-\"||uci===p.uci)return;seen[uci]=(seen[uci]||0)+1;const n=seen[uci]-1;out.push({uci,col:COL[who],off:n*5-4,w:5,op:.8})});\n  out.push({uci:p.uci,col:\"pl\",w:7,op:.9});\n  if(p.props&&p.bestu&&!p.props.some(x=>x[2]===p.bestu))out.push({uci:p.bestu,col:\"sf\",w:4,op:.9,dash:1});return out}\nfunction propsTable(i){\n  const p=D.plies[i];if(!p.props)return\"\";\n  let h='<table class=\"props\"><thead><tr><th>Membre<\/th><th>Coup<\/th><th class=\"num\">Machine<\/th><th class=\"num\">Stockfish<\/th><\/tr><\/thead><tbody>';\n  p.props.forEach(([who,san,uci,ev,sf])=>{const ch=uci===p.uci;h+=`<tr class=\"${ch?\"chosen\":\"\"}\"><td><span class=\"chip\"><i class=\"dot d-${COL[who]}\"><\/i>${NAME[who]}<\/span><\/td><td>${san}${ch?\" \u2713\":\"\"}<\/td><td class=\"num\" title=\"\u00e9valuation annonc\u00e9e par la machine\">${ev===\"?\"?\"\u2013\":ev.replace(\"-\",\"\u2212\").replace(\".\",\",\")}<\/td><td class=\"num ${sf>0?\"pos\":sf<0?\"neg\":\"\"}\" title=\"Stockfish\">${fmt(sf)}<\/td><\/tr>`});\n  h+='<\/tbody><\/table>';if(p.best&&!p.props.some(x=>x[2]===p.bestu))h+=`<div class=\"small\">Coup de Stockfish, propos\u00e9 par personne : <b>${p.best}<\/b> (fl\u00e8che en pointill\u00e9).<\/div>`;return h}\n\/\/ moments\nconst momByPly={};D.moments.forEach(m=>momByPly[m.ply]=m);\nconst mc=document.getElementById(\"crw-moments\");\nD.moments.forEach(m=>{const i=m.ply,p=D.plies[i];const card=document.createElement(\"article\");card.className=\"moment\";\n  const bd=document.createElement(\"div\");bd.className=\"bd\";bd.appendChild(boardSVG(fenBefore(i),arrowsFor(i)));\n  const tx=document.createElement(\"div\");tx.className=\"txt\";\n  tx.innerHTML=`<span class=\"tag\">${moveLabel(i)}${p.san} \u00b7 Stockfish apr\u00e8s le coup ${fmt(p.ev)}<\/span><h3>${m.title}<\/h3><p>${m.text}<\/p>${propsTable(i)}<button type=\"button\" data-go=\"${i}\">Voir dans la partie<\/button>`;\n  card.append(bd,tx);mc.appendChild(card)});\nmc.addEventListener(\"click\",e=>{const b=e.target.closest(\"[data-go]\");if(b){go(+b.dataset.go);document.getElementById(\"crw-t-rep\").scrollIntoView({behavior:\"smooth\"})}});\n\/\/ graph\n(function(){const g=document.getElementById(\"crw-graph\");const n=D.plies.length;const W=1000,H=190,L=34,R=8,T=10,B=24;\n  const x=i=>L+(W-L-R)*i\/(n-1),y=v=>{v=Math.max(-600,Math.min(600,v));return T+(H-T-B)*(1-(v+600)\/1200)};\n  let h=\"\";[-600,-300,0,300,600].forEach(v=>{h+=`<line x1=\"${L}\" x2=\"${W-R}\" y1=\"${y(v)}\" y2=\"${y(v)}\" style=\"stroke:var(--line)\" stroke-width=\"${v===0?1.5:1}\"\/><text x=\"${L-6}\" y=\"${y(v)+3}\" text-anchor=\"end\">${v>0?\"+\":\"\"}${v\/100}<\/text>`});\n  for(let m=10;m<=Math.ceil(n\/2);m+=10){const i=2*(m-1);h+=`<text x=\"${x(i)}\" y=\"${H-6}\" text-anchor=\"middle\">${m}<\/text>`}\n  const pts=D.plies.map((p,i)=>`${x(i).toFixed(1)},${y(p.ev).toFixed(1)}`);\n  h+=`<path d=\"M${x(0)},${y(0)} L${pts.join(\" L\")} L${x(n-1)},${y(0)} Z\" style=\"fill:var(--played)\" opacity=\".14\"\/>`;\n  h+=`<polyline points=\"${pts.join(\" \")}\" style=\"fill:none;stroke:var(--played)\" stroke-width=\"2\"\/>`;\n  D.moments.forEach(m=>{const i=m.ply;h+=`<circle cx=\"${x(i)}\" cy=\"${y(D.plies[i].ev)}\" r=\"5\" style=\"fill:var(--surface);stroke:var(--ink);cursor:pointer\" stroke-width=\"1.5\" data-go=\"${i}\"><title>${moveLabel(i)}${D.plies[i].san} \u2014 ${m.title}<\/title><\/circle>`});\n  g.innerHTML=h;g.addEventListener(\"click\",e=>{const c=e.target.closest(\"[data-go]\");if(c){go(+c.dataset.go)}})})();\n\/\/ move list\nconst ml=document.getElementById(\"crw-movelist\");const btns=[];\nfor(let i=0;i<D.plies.length;i+=2){const no=document.createElement(\"div\");no.className=\"no\";no.textContent=(i\/2+1)+\".\";ml.appendChild(no);\n  for(const j of[i,i+1]){if(j>=D.plies.length){ml.appendChild(document.createElement(\"div\"));continue}const p=D.plies[j];const b=document.createElement(\"button\");b.type=\"button\";b.className=\"mv\"+(momByPly[j]?\" key\":\"\");\n    let mk=\"\";if(p.mode){mk=`<i class=\"mk\" style=\"background:${p.mode===\"unanime\"?\"var(--line)\":\"var(--played)\"}\" title=\"${p.mode}\"><\/i>`}\n    b.innerHTML=`${p.san}${mk}`;b.addEventListener(\"click\",()=>go(j));ml.appendChild(b);btns[j]=b}}\nlet cur=-1;\nfunction go(i){cur=Math.max(-1,Math.min(D.plies.length-1,i));render()}\nfunction render(){const bd=document.getElementById(\"crw-board\");bd.innerHTML=\"\";\n  const fen=cur<0?START:D.plies[cur].fen;bd.appendChild(boardSVG(fen,[],cur>=0?D.plies[cur].uci:null));\n  btns.forEach(b=>b&&b.classList.remove(\"on\"));if(cur>=0&&btns[cur]){btns[cur].classList.add(\"on\");{const L=document.getElementById(\"crw-movelist\"),B=btns[cur];L.scrollTop+=B.getBoundingClientRect().top-L.getBoundingClientRect().top-L.clientHeight\/2}}\n  const c=document.getElementById(\"crw-comment\");document.getElementById(\"crw-cur\").textContent=cur<0?\"position initiale\":`${moveLabel(cur)}${D.plies[cur].san}`;\n  if(cur<0){c.innerHTML='<p>Position initiale. Avance avec \u25b6 ou clique un coup.<\/p>';return}\n  const p=D.plies[cur],m=momByPly[cur];let h=\"\";\n  if(m)h+=`<h3>${m.title}<\/h3><p>${m.text}<\/p>`;\n  if(p.book)h+='<p class=\"small\">Coup du livre d\\'ouvertures.<\/p>';\n  else if(p.props){h+=`<p class=\"small\">${p.mode===\"unanime\"?\"Tous les membres sont d'accord : l'arbitre n'est pas consult\u00e9.\":\"Les membres divergent : l'arbitre tranche.\"}<\/p>`+propsTable(cur)}\n  else if(p.mode)h+=`<p class=\"small\">${p.mode}<\/p>`;\n  else h+=`<p class=\"small\">Coup de Caissa 1.5.<\/p>`;\n  h+=`<p class=\"small\">Stockfish apr\u00e8s le coup : ${fmt(p.ev)}${p.best&&p.best!==p.san?` \u00b7 son coup : ${p.best}`:\"\"}<\/p>`;\n  c.innerHTML=h}\ndocument.getElementById(\"crw-b-start\").onclick=()=>go(-1);document.getElementById(\"crw-b-prev\").onclick=()=>go(cur-1);\ndocument.getElementById(\"crw-b-next\").onclick=()=>go(cur+1);document.getElementById(\"crw-b-end\").onclick=()=>go(D.plies.length-1);\ndocument.addEventListener(\"keydown\",e=>{const R=document.getElementById(\"crw-board\").getBoundingClientRect();if(R.bottom<0||R.top>innerHeight)return;if(e.target.closest(\"input,textarea\"))return;if(e.key===\"ArrowRight\"){go(cur+1);e.preventDefault()}if(e.key===\"ArrowLeft\"){go(cur-1);e.preventDefault()}});\ngo(50);\n})();\n<\/script>\n\n\n<h2><span class=\"lead-num\">8.<\/span>Synth\u00e8se&nbsp;: Orion, Pl\u00e9iades, Crux, Andromeda<\/h2>\n<p>Les quatre m\u00e9ta-moteurs du laboratoire suivent la m\u00eame recette&nbsp;: des membres d&#8217;auteurs diff\u00e9rents qui r\u00e9fl\u00e9chissent en parall\u00e8le, et Stockfish&nbsp;18 qui choisit parmi leurs coups sans jamais en proposer.<\/p>\n<table>\n<thead><tr><th>M\u00e9ta-moteur<\/th><th>Membres<\/th><th class=\"num\">Moyenne des membres<\/th><th class=\"num\">Cote Ordo<\/th><th class=\"num\">Gain<\/th><\/tr><\/thead>\n<tbody>\n<tr><td>Orion<\/td><td>3 machines d\u00e9di\u00e9es (Forte&nbsp;A, MM&nbsp;IV, Designer&nbsp;2100)<\/td><td class=\"num\">1788<\/td><td class=\"num\">2317<\/td><td class=\"num\">+529<\/td><\/tr>\n<tr><td>Pl\u00e9iades<\/td><td>7 machines d\u00e9di\u00e9es et programmes DOS<\/td><td class=\"num\">2147<\/td><td class=\"num\">2924<\/td><td class=\"num\">+777<\/td><\/tr>\n<tr><td>Crux<\/td><td>4 moteurs PC (Shredder, Fritz, Junior, Hiarcs)<\/td><td class=\"num\">2917<\/td><td class=\"num\">3396<\/td><td class=\"num\">+479<\/td><\/tr>\n<tr class=\"moi\"><td>Andromeda<\/td><td>6 moteurs PC actifs (les 4 de Crux, Chess Tiger, Fruit)<\/td><td class=\"num\">2907<\/td><td class=\"num\">3493<\/td><td class=\"num\">+586<\/td><\/tr>\n<\/tbody>\n<\/table>\n<p>Trois le\u00e7ons, et une confirmation.<\/p>\n<p><strong>Plus de membres, plus de gain&nbsp;: confirm\u00e9.<\/strong> \u00c0 membres de m\u00eame niveau, passer de quatre \u00e0 six t\u00eates rapporte environ 100&nbsp;points Elo, et le gain sur la moyenne des membres passe de 479 \u00e0 586. C&#8217;est la m\u00eame courbe qu&#8217;entre Orion et Pl\u00e9iades, d\u00e9cal\u00e9e de mille points vers le haut. Et elle n&#8217;est pas finie&nbsp;: deux membres sur huit n&#8217;ont pas parl\u00e9.<\/p>\n<p><strong>Le gain vient de la diversit\u00e9, pas de la force.<\/strong> Les deux membres ajout\u00e9s sont cot\u00e9s sous les deux meilleurs de Crux. Ils rapportent pourtant 100&nbsp;points, parce qu&#8217;ils voient des coups que les quatre autres ne voient pas. Un septi\u00e8me Shredder n&#8217;aurait rien apport\u00e9.<\/p>\n<p><strong>La limite est la m\u00eame partout.<\/strong> Le m\u00e9ta-moteur corrige les erreurs individuelles, pas les erreurs partag\u00e9es. Ethereal&nbsp;11.75 bat encore Andromeda (2 sur 10, six d\u00e9faites) comme il battait Crux. Ajouter des membres de la m\u00eame g\u00e9n\u00e9ration multiplie les id\u00e9es, mais pas les fa\u00e7ons d&#8217;\u00e9valuer une position&nbsp;: ce que six moteurs des ann\u00e9es 2000 jugent tous mal, l&#8217;arbitre ne peut pas le corriger.<\/p>\n<p>La suite&nbsp;? D&#8217;abord r\u00e9parer le relais pour que ProDeo et The King parlent \u00e0 temps, et mesurer ce que valent vraiment huit t\u00eates. Ensuite, peut-\u00eatre, la question que ce classement pose&nbsp;: un m\u00e9ta-moteur de moteurs classiques \u00e0 huit c\u0153urs, Houdini, Komodo, Stockfish&nbsp;8, arbitr\u00e9 par Stockfish&nbsp;18, irait-il chercher les NNUE&nbsp;?<\/p>\n\n<footer>\n<p>Mat\u00e9riel et m\u00e9thode<\/p>\n<ul>\n<li>Andromeda&nbsp;: relais <em>trio_uci.py<\/em> (Python), six \u00e0 huit moteurs UCI\/Winboard en parall\u00e8le, 15&nbsp;s par membre, arbitre Stockfish&nbsp;18 (1&nbsp;s, <em>go searchmoves<\/em>). Cadence Andromeda 60\/1800, adversaires 60\/900 sur 8&nbsp;c\u0153urs Ryzen. Gauntlet jou\u00e9 sous cutechess.<\/li>\n<li>Classement&nbsp;: Ordo 1.2.6 sur l&#8217;ensemble des parties du laboratoire, ancres inchang\u00e9es. Les cotes des membres sont celles de la liste maison.<\/li>\n<li>Analyse&nbsp;: journal d&#8217;Andromeda (15&nbsp;841 d\u00e9cisions), r\u00e9\u00e9valu\u00e9 par Stockfish&nbsp;17.1 \u00e0 0,08&nbsp;s par coup propos\u00e9&nbsp;; partie comment\u00e9e r\u00e9\u00e9valu\u00e9e \u00e0 0,3&nbsp;s par position.<\/li>\n<li>Voir aussi&nbsp;: <a href=\"https:\/\/www.chess.lumn.eu\/wordpress\/2026\/11\/07\/meta-moteur-crux\/\">Crux<\/a>, <a href=\"https:\/\/www.chess.lumn.eu\/wordpress\/2026\/11\/02\/meta-moteur-pleiades-uci\/\">Pl\u00e9iades<\/a>, <a href=\"https:\/\/www.chess.lumn.eu\/wordpress\/2026\/10\/28\/trois-cerveaux-valent-ils-mieux-quun\/\">Orion<\/a>.<\/li>\n<\/ul>\n<\/footer>\n<\/article>\n\n<\/body>\n<\/html>\n\n","protected":false},"excerpt":{"rendered":"<p>Les quatre moteurs de Crux rejoints par Chess Tiger 2007, Fruit 2.1, ProDeo 2.0 et The King 3.50, sous l&#8217;arbitrage de Stockfish 18 : 3493 Elo, 27e du classement, juste sous les moteurs NNUE. +97 sur Crux, analyse de 15 841 d\u00e9cisions et la victoire contre Caissa 1.5 \u00e0 rejouer.<\/p>\n","protected":false},"author":1,"featured_media":4853,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"neve_meta_sidebar":"","neve_meta_container":"","neve_meta_enable_content_width":"","neve_meta_content_width":0,"neve_meta_title_alignment":"","neve_meta_author_avatar":"","neve_post_elements_order":"","neve_meta_disable_header":"","neve_meta_disable_footer":"","neve_meta_disable_title":""},"categories":[72],"tags":[],"rttpg_featured_image_url":{"full":["https:\/\/www.chess.lumn.eu\/wordpress\/wp-content\/uploads\/2026\/11\/andromeda-meta-moteur.png",1200,800,false],"landscape":["https:\/\/www.chess.lumn.eu\/wordpress\/wp-content\/uploads\/2026\/11\/andromeda-meta-moteur.png",1200,800,false],"portraits":["https:\/\/www.chess.lumn.eu\/wordpress\/wp-content\/uploads\/2026\/11\/andromeda-meta-moteur.png",1200,800,false],"thumbnail":["https:\/\/www.chess.lumn.eu\/wordpress\/wp-content\/uploads\/2026\/11\/andromeda-meta-moteur-150x150.png",150,150,true],"medium":["https:\/\/www.chess.lumn.eu\/wordpress\/wp-content\/uploads\/2026\/11\/andromeda-meta-moteur-300x200.png",300,200,true],"large":["https:\/\/www.chess.lumn.eu\/wordpress\/wp-content\/uploads\/2026\/11\/andromeda-meta-moteur-1024x683.png",1024,683,true],"1536x1536":["https:\/\/www.chess.lumn.eu\/wordpress\/wp-content\/uploads\/2026\/11\/andromeda-meta-moteur.png",1200,800,false],"2048x2048":["https:\/\/www.chess.lumn.eu\/wordpress\/wp-content\/uploads\/2026\/11\/andromeda-meta-moteur.png",1200,800,false],"neve-blog":["https:\/\/www.chess.lumn.eu\/wordpress\/wp-content\/uploads\/2026\/11\/andromeda-meta-moteur-930x620.png",930,620,true]},"rttpg_author":{"display_name":"valterd","author_link":"https:\/\/www.chess.lumn.eu\/wordpress\/author\/valterd\/"},"rttpg_comment":0,"rttpg_category":"<a href=\"https:\/\/www.chess.lumn.eu\/wordpress\/category\/developpements\/\" rel=\"category tag\">D\u00e9veloppements<\/a>","rttpg_excerpt":"Les quatre moteurs de Crux rejoints par Chess Tiger 2007, Fruit 2.1, ProDeo 2.0 et The King 3.50, sous l'arbitrage de Stockfish 18 : 3493 Elo, 27e du classement, juste sous les moteurs NNUE. +97 sur Crux, analyse de 15 841 d\u00e9cisions et la victoire contre Caissa 1.5 \u00e0 rejouer.","_links":{"self":[{"href":"https:\/\/www.chess.lumn.eu\/wordpress\/wp-json\/wp\/v2\/posts\/4854"}],"collection":[{"href":"https:\/\/www.chess.lumn.eu\/wordpress\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.chess.lumn.eu\/wordpress\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.chess.lumn.eu\/wordpress\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.chess.lumn.eu\/wordpress\/wp-json\/wp\/v2\/comments?post=4854"}],"version-history":[{"count":0,"href":"https:\/\/www.chess.lumn.eu\/wordpress\/wp-json\/wp\/v2\/posts\/4854\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.chess.lumn.eu\/wordpress\/wp-json\/wp\/v2\/media\/4853"}],"wp:attachment":[{"href":"https:\/\/www.chess.lumn.eu\/wordpress\/wp-json\/wp\/v2\/media?parent=4854"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.chess.lumn.eu\/wordpress\/wp-json\/wp\/v2\/categories?post=4854"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.chess.lumn.eu\/wordpress\/wp-json\/wp\/v2\/tags?post=4854"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}