Author: Dann Corbit
Date: 12:31:20 10/22/04
http://wbec-ridderkerk.nl/ See "Premier Div." drop down. Elostat output: Program Elo + - Games Score Av.Op. Draws 1 Shredder 7.04 : 2742 71 96 60 70.0 % 2595 23.3 % 2 Aristarch 4.50 : 2714 72 81 64 65.6 % 2602 28.1 % 3 The King 3.33 : 2706 74 69 62 64.5 % 2602 38.7 % 4 DeepSjeng 1.6 : 2699 77 75 60 63.3 % 2604 33.3 % 5 Pro Deo 1.0 : 2692 77 75 60 63.3 % 2598 33.3 % 6 Ruffian 2.1.0 : 2659 80 61 64 57.8 % 2604 40.6 % 7 WARP 0.58 : 2622 89 65 60 52.5 % 2605 35.0 % 8 Thinker 4.6c : 2604 85 59 64 53.1 % 2582 40.6 % 9 SmarThink 0.18a-r165 : 2602 88 61 60 53.3 % 2579 40.0 % 10 Crafty 19.15 : 2598 86 64 64 52.3 % 2582 32.8 % 11 LG Revival : 2596 90 71 60 51.7 % 2584 26.7 % 12 Yace 0.99.87 : 2582 66 87 60 45.8 % 2611 35.0 % 13 Quark 2.35 Paderborn : 2578 70 89 60 47.5 % 2595 28.3 % 14 Pharaon 2.62 : 2566 71 82 60 41.7 % 2625 33.3 % 15 Gandalf 4.32h : 2554 60 79 64 41.4 % 2614 42.2 % 16 Tao 5.7b04 : 2549 78 84 62 44.4 % 2589 21.0 % 17 GreenLightChess 3.00.3.4: 2511 68 77 60 36.7 % 2606 40.0 % 18 Nejmet 3.07 : 2490 69 73 64 35.9 % 2590 37.5 % 19 Ktulu 5.1 : 2475 88 71 60 30.8 % 2616 28.3 % 20 Amyan 1.593 : 2456 82 69 60 27.5 % 2625 35.0 % A lot of uncertainty remains, clearly, from the size of the error bars. But a very impressive showing. At any rate, ProDeo, Aristarch, and Ruffian are probably the strongest free engines. And since Ruffian has gone professional, development of the free version has stopped (I assume). In any case, Aristarch should certainly make us sit up straight -- if it had not already done so.
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