https://mbuffett.com/tags/machine-learning/Recent content in Machine-Learning on Marcus' BlogHugoenMon, 19 Oct 2026 12:00:00 +0000https://mbuffett.com/posts/most-human-chess-bot/Mon, 19 Oct 2026 12:00:00 +0000https://mbuffett.com/posts/most-human-chess-bot/<style> .oxi-figure { display: block; width: 100%; margin: 28px 0; } .oxi-figure figcaption { font-size: 0.85rem; opacity: 0.75; margin-top: 6px; } .oxi-chart { width: 100%; height: auto; display: block; font-family: Inter, -apple-system, "Segoe UI", sans-serif; --surface: #fff; --ink: #222; --muted: #6f6f6f; --grid: #e6e6e6; --axis: #cfcfcf; --s1: #2a78d6; --s2: #eb6834; --s3: #1baf7a; --s4: #6250d6; --s5: #e87ba4; --human: #8a8a8a; } body.dark-theme .oxi-chart { --surface: #292a2d; --ink: #e8e8ec; --muted: #a9a9b3; --grid: #35373b; --axis: #4e4e57; --s1: #3987e5; --s2: #d95926; --s3: #199e70; --s4: #9085e9; --s5: #d55181; --human: #9a9aa3; } .oxi-dark { display: none; } body.dark-theme .oxi-light { display: none; } body.dark-theme 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all.</desc> <text class="oxi-tick" x="176.0" y="24" text-anchor="middle">Predicting</text> <text class="oxi-tick" x="176.0" y="39" text-anchor="middle">human moves</text> <text class="oxi-tick" x="296.0" y="24" text-anchor="middle">Matching</text> <text class="oxi-tick" x="296.0" y="39" text-anchor="middle">strength</text> <text class="oxi-tick" x="416.0" y="24" text-anchor="middle">Time scramble</text> <text class="oxi-tick" x="416.0" y="39" text-anchor="middle">play</text> <text class="oxi-tick" x="536.0" y="24" text-anchor="middle">Predicting</text> <text class="oxi-tick" x="536.0" y="39" text-anchor="middle">think time</text> <text class="oxi-tick" x="656.0" y="24" text-anchor="middle">Predicting</text> <text class="oxi-tick" x="656.0" y="39" text-anchor="middle">who wins</text> <line class="oxi-grid" x1="0" x2="716" y1="52" y2="52"/> <text class="oxi-legend" x="0" y="75.0" font-weight="600">Chessbook-1</text> <text class="oxi-tick" x="0" y="91.0">199M parameters</text> <g><title>96 / 100</title><rect class="oxi-fill-good" x="156.5" y="74.0" width="3" height="8" rx="0.5"/><rect class="oxi-fill-good" x="160.5" y="74.0" width="3" height="8" rx="0.5"/><rect class="oxi-fill-good" x="164.5" y="74.0" width="3" height="8" rx="0.5"/><rect class="oxi-fill-good" x="168.5" y="74.0" width="3" height="8" rx="0.5"/><rect class="oxi-fill-good" x="172.5" y="74.0" width="3" height="8" rx="0.5"/><rect class="oxi-fill-good" x="176.5" y="74.0" width="3" height="8" rx="0.5"/><rect class="oxi-fill-good" x="180.5" y="74.0" width="3" height="8" rx="0.5"/><rect class="oxi-fill-good" x="184.5" y="74.0" width="3" height="8" rx="0.5"/><rect class="oxi-fill-good" x="188.5" y="74.0" width="3" height="8" rx="0.5"/><rect class="oxi-fill-good" x="192.5" y="74.0" width="3" height="8" rx="0.5"/></g> <g><title>81 / 100</title><rect class="oxi-fill-good" x="276.5" y="74.0" width="3" height="8" rx="0.5"/><rect class="oxi-fill-good" x="280.5" y="74.0" width="3" height="8" rx="0.5"/><rect class="oxi-fill-good" x="284.5" y="74.0" width="3" height="8" rx="0.5"/><rect class="oxi-fill-good" x="288.5" y="74.0" width="3" height="8" rx="0.5"/><rect class="oxi-fill-good" x="292.5" y="74.0" width="3" height="8" rx="0.5"/><rect class="oxi-fill-good" x="296.5" y="74.0" width="3" height="8" rx="0.5"/><rect class="oxi-fill-good" x="300.5" y="74.0" width="3" height="8" rx="0.5"/><rect class="oxi-fill-good" x="304.5" y="74.0" width="3" height="8" rx="0.5"/><rect class="oxi-tick-bg" x="308.5" y="74.0" width="3" height="8" rx="0.5"/><rect class="oxi-tick-bg" x="312.5" y="74.0" width="3" height="8" rx="0.5"/></g> <g><title>84 / 100</title><rect class="oxi-fill-good" x="396.5" y="74.0" width="3" height="8" rx="0.5"/><rect class="oxi-fill-good" x="400.5" y="74.0" width="3" height="8" rx="0.5"/><rect class="oxi-fill-good" x="404.5" y="74.0" width="3" height="8" rx="0.5"/><rect class="oxi-fill-good" x="408.5" y="74.0" width="3" height="8" rx="0.5"/><rect class="oxi-fill-good" x="412.5" y="74.0" width="3" height="8" rx="0.5"/><rect class="oxi-fill-good" x="416.5" y="74.0" width="3" height="8" rx="0.5"/><rect class="oxi-fill-good" x="420.5" y="74.0" width="3" height="8" rx="0.5"/><rect class="oxi-fill-good" x="424.5" y="74.0" width="3" height="8" rx="0.5"/><rect class="oxi-tick-bg" x="428.5" y="74.0" width="3" height="8" rx="0.5"/><rect class="oxi-tick-bg" x="432.5" y="74.0" width="3" height="8" rx="0.5"/></g> <g><title>98 / 100</title><rect class="oxi-fill-good" x="516.5" y="74.0" width="3" height="8" rx="0.5"/><rect class="oxi-fill-good" x="520.5" y="74.0" width="3" height="8" rx="0.5"/><rect class="oxi-fill-good" x="524.5" y="74.0" width="3" height="8" rx="0.5"/><rect class="oxi-fill-good" x="528.5" y="74.0" width="3" height="8" rx="0.5"/><rect class="oxi-fill-good" x="532.5" y="74.0" width="3" height="8" rx="0.5"/><rect class="oxi-fill-good" x="536.5" y="74.0" width="3" height="8" rx="0.5"/><rect class="oxi-fill-good" x="540.5" y="74.0" width="3" height="8" rx="0.5"/><rect class="oxi-fill-good" x="544.5" y="74.0" width="3" height="8" rx="0.5"/><rect class="oxi-fill-good" x="548.5" y="74.0" width="3" height="8" rx="0.5"/><rect class="oxi-fill-good" x="552.5" y="74.0" width="3" height="8" rx="0.5"/></g> <g><title>97 / 100</title><rect class="oxi-fill-good" x="636.5" y="74.0" width="3" height="8" rx="0.5"/><rect class="oxi-fill-good" x="640.5" y="74.0" width="3" height="8" rx="0.5"/><rect class="oxi-fill-good" x="644.5" y="74.0" width="3" height="8" rx="0.5"/><rect class="oxi-fill-good" x="648.5" y="74.0" width="3" height="8" rx="0.5"/><rect class="oxi-fill-good" x="652.5" y="74.0" width="3" height="8" rx="0.5"/><rect class="oxi-fill-good" x="656.5" y="74.0" width="3" height="8" rx="0.5"/><rect class="oxi-fill-good" x="660.5" y="74.0" width="3" height="8" rx="0.5"/><rect class="oxi-fill-good" x="664.5" y="74.0" width="3" height="8" rx="0.5"/><rect class="oxi-fill-good" x="668.5" y="74.0" width="3" height="8" rx="0.5"/><rect class="oxi-fill-good" x="672.5" y="74.0" width="3" height="8" rx="0.5"/></g> <line class="oxi-grid" x1="0" x2="716" y1="104" y2="104"/> <text class="oxi-legend" x="0" y="127.0" font-weight="600">Maia-3</text> <text class="oxi-tick" x="0" y="143.0">79M parameters</text> <g><title>85 / 100</title><rect class="oxi-fill-good" x="156.5" y="126.0" width="3" height="8" rx="0.5"/><rect class="oxi-fill-good" x="160.5" y="126.0" width="3" height="8" rx="0.5"/><rect class="oxi-fill-good" x="164.5" y="126.0" width="3" height="8" rx="0.5"/><rect class="oxi-fill-good" x="168.5" y="126.0" width="3" height="8" rx="0.5"/><rect class="oxi-fill-good" x="172.5" y="126.0" width="3" height="8" rx="0.5"/><rect class="oxi-fill-good" x="176.5" y="126.0" width="3" height="8" rx="0.5"/><rect class="oxi-fill-good" x="180.5" y="126.0" width="3" height="8" rx="0.5"/><rect class="oxi-fill-good" x="184.5" y="126.0" width="3" height="8" rx="0.5"/><rect class="oxi-fill-good" x="188.5" y="126.0" width="3" height="8" rx="0.5"/><rect class="oxi-tick-bg" x="192.5" y="126.0" width="3" height="8" rx="0.5"/></g> <g><title>56 / 100</title><rect class="oxi-fill-mid" x="276.5" y="126.0" width="3" height="8" rx="0.5"/><rect class="oxi-fill-mid" x="280.5" y="126.0" width="3" height="8" rx="0.5"/><rect class="oxi-fill-mid" x="284.5" y="126.0" width="3" height="8" rx="0.5"/><rect class="oxi-fill-mid" x="288.5" y="126.0" width="3" height="8" rx="0.5"/><rect class="oxi-fill-mid" x="292.5" y="126.0" width="3" height="8" rx="0.5"/><rect class="oxi-fill-mid" x="296.5" y="126.0" width="3" height="8" rx="0.5"/><rect class="oxi-tick-bg" x="300.5" y="126.0" width="3" height="8" rx="0.5"/><rect class="oxi-tick-bg" x="304.5" y="126.0" width="3" height="8" rx="0.5"/><rect class="oxi-tick-bg" x="308.5" y="126.0" width="3" height="8" rx="0.5"/><rect class="oxi-tick-bg" x="312.5" y="126.0" width="3" height="8" rx="0.5"/></g> <g><title>57 / 100</title><rect class="oxi-fill-mid" x="396.5" y="126.0" width="3" height="8" rx="0.5"/><rect class="oxi-fill-mid" x="400.5" y="126.0" width="3" height="8" rx="0.5"/><rect class="oxi-fill-mid" x="404.5" y="126.0" width="3" height="8" rx="0.5"/><rect class="oxi-fill-mid" x="408.5" y="126.0" width="3" height="8" rx="0.5"/><rect class="oxi-fill-mid" x="412.5" y="126.0" width="3" height="8" rx="0.5"/><rect class="oxi-fill-mid" x="416.5" y="126.0" width="3" height="8" rx="0.5"/><rect class="oxi-tick-bg" x="420.5" y="126.0" width="3" height="8" rx="0.5"/><rect class="oxi-tick-bg" x="424.5" y="126.0" width="3" height="8" rx="0.5"/><rect class="oxi-tick-bg" x="428.5" y="126.0" width="3" height="8" rx="0.5"/><rect class="oxi-tick-bg" x="432.5" y="126.0" width="3" height="8" rx="0.5"/></g> <g><circle class="oxi-no" cx="536.0" cy="130.0" r="8.5"><title>No</title></circle><path class="oxi-glyph" d="M532.7 126.7 L539.3 133.3 M539.3 126.7 L532.7 133.3"/></g> <g><title>80 / 100</title><rect class="oxi-fill-good" x="636.5" y="126.0" width="3" height="8" rx="0.5"/><rect class="oxi-fill-good" x="640.5" y="126.0" width="3" height="8" rx="0.5"/><rect class="oxi-fill-good" x="644.5" y="126.0" width="3" height="8" rx="0.5"/><rect class="oxi-fill-good" x="648.5" y="126.0" width="3" height="8" rx="0.5"/><rect class="oxi-fill-good" x="652.5" y="126.0" width="3" height="8" rx="0.5"/><rect class="oxi-fill-good" x="656.5" y="126.0" width="3" height="8" rx="0.5"/><rect class="oxi-fill-good" x="660.5" y="126.0" width="3" height="8" rx="0.5"/><rect class="oxi-fill-good" x="664.5" y="126.0" width="3" height="8" rx="0.5"/><rect class="oxi-tick-bg" x="668.5" y="126.0" width="3" height="8" rx="0.5"/><rect class="oxi-tick-bg" x="672.5" y="126.0" width="3" height="8" rx="0.5"/></g> <line class="oxi-grid" x1="0" x2="716" y1="156" y2="156"/> <text class="oxi-legend" x="0" y="179.0" font-weight="600">Allie 2.0</text> <text class="oxi-tick" x="0" y="195.0">5.6B parameters</text> <g><title>99 / 100</title><rect class="oxi-fill-good" x="156.5" y="178.0" width="3" height="8" rx="0.5"/><rect class="oxi-fill-good" x="160.5" y="178.0" width="3" height="8" rx="0.5"/><rect class="oxi-fill-good" x="164.5" y="178.0" width="3" height="8" rx="0.5"/><rect class="oxi-fill-good" x="168.5" y="178.0" width="3" height="8" rx="0.5"/><rect class="oxi-fill-good" x="172.5" y="178.0" width="3" height="8" rx="0.5"/><rect class="oxi-fill-good" x="176.5" y="178.0" width="3" height="8" rx="0.5"/><rect class="oxi-fill-good" x="180.5" y="178.0" width="3" height="8" rx="0.5"/><rect class="oxi-fill-good" x="184.5" y="178.0" width="3" height="8" rx="0.5"/><rect class="oxi-fill-good" x="188.5" y="178.0" width="3" height="8" rx="0.5"/><rect class="oxi-fill-good" x="192.5" y="178.0" width="3" height="8" rx="0.5"/></g> <g><title>48 / 100</title><rect class="oxi-fill-mid" x="276.5" y="178.0" width="3" height="8" rx="0.5"/><rect class="oxi-fill-mid" x="280.5" y="178.0" width="3" height="8" rx="0.5"/><rect class="oxi-fill-mid" x="284.5" y="178.0" width="3" height="8" rx="0.5"/><rect class="oxi-fill-mid" x="288.5" y="178.0" width="3" height="8" rx="0.5"/><rect class="oxi-fill-mid" x="292.5" y="178.0" width="3" height="8" rx="0.5"/><rect class="oxi-tick-bg" x="296.5" y="178.0" width="3" height="8" rx="0.5"/><rect class="oxi-tick-bg" x="300.5" y="178.0" width="3" height="8" rx="0.5"/><rect class="oxi-tick-bg" x="304.5" y="178.0" width="3" height="8" rx="0.5"/><rect class="oxi-tick-bg" x="308.5" y="178.0" width="3" height="8" rx="0.5"/><rect class="oxi-tick-bg" x="312.5" y="178.0" width="3" height="8" rx="0.5"/></g> <g><title>99 / 100</title><rect class="oxi-fill-good" x="396.5" y="178.0" width="3" height="8" rx="0.5"/><rect class="oxi-fill-good" x="400.5" y="178.0" width="3" height="8" rx="0.5"/><rect class="oxi-fill-good" x="404.5" y="178.0" width="3" height="8" rx="0.5"/><rect class="oxi-fill-good" x="408.5" y="178.0" width="3" height="8" rx="0.5"/><rect class="oxi-fill-good" x="412.5" y="178.0" width="3" height="8" rx="0.5"/><rect class="oxi-fill-good" x="416.5" y="178.0" width="3" height="8" rx="0.5"/><rect class="oxi-fill-good" x="420.5" y="178.0" width="3" height="8" rx="0.5"/><rect class="oxi-fill-good" x="424.5" y="178.0" width="3" height="8" rx="0.5"/><rect class="oxi-fill-good" x="428.5" y="178.0" width="3" height="8" rx="0.5"/><rect class="oxi-fill-good" x="432.5" y="178.0" width="3" height="8" rx="0.5"/></g> <g><title>73 / 100</title><rect class="oxi-fill-good" x="516.5" y="178.0" width="3" height="8" rx="0.5"/><rect class="oxi-fill-good" x="520.5" y="178.0" width="3" height="8" rx="0.5"/><rect class="oxi-fill-good" x="524.5" y="178.0" width="3" height="8" rx="0.5"/><rect class="oxi-fill-good" x="528.5" y="178.0" width="3" height="8" rx="0.5"/><rect class="oxi-fill-good" x="532.5" y="178.0" width="3" height="8" rx="0.5"/><rect class="oxi-fill-good" x="536.5" y="178.0" width="3" height="8" rx="0.5"/><rect class="oxi-fill-good" x="540.5" y="178.0" width="3" height="8" rx="0.5"/><rect class="oxi-tick-bg" x="544.5" y="178.0" width="3" 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<line class="oxi-grid" x1="0" x2="716" y1="212" y2="212"/> </svg> </figure> <p>Everyone knows playing against an engine like Stockfish is nothing like playing a human. The existing human-like models (Allie 2.0, Maia-3) weren&rsquo;t quite right for my use case, and I became a bit obsessed with making the best one.</p>