Author: Uri Blass
Date: 00:10:12 01/24/04
Go up one level in this thread
On January 23, 2004 at 21:34:10, Robert Hyatt wrote: >On January 23, 2004 at 18:02:55, ALI MIRAFZALI wrote: > >>From many Commericial and freeware programs tested by me ;It seems that Crafty >>is the worst in terms of finding tactitcs and Combinations . > >My answer has to be a question: "do you want to solve tactical positions, >or play real games of chess?" The two are not necessarily the same thing... Note that I find that many problems are positional problems. >>Position 1 :Solution 1.Nxb5 >>[D]8/4kpbn/p1p3p1/Pp2p2p/1P2Pn2/N1P1BP2/5P1P/5BK1 w >>crafty 19.8 WB2 6 MB: >>D18 39:38 0.60 1. c4 Kd7 2. cxb5 cxb5 3. Nxb5 Bf8 4. Bb6 Ng5 5. Nc7 Nxf3+ 6. >>Kh1 Bxb4 7. Bxa6 Kc6 8. Bb5+ Kb7 9. Bc4 Nd2 10. Bxf7 Nxe4 11. Nd5 Be1 Crafty find positive score for another move(+0.60) >>Analysis by Comet B27: >>1.Nxb5 cxb5 2.Bxb5 axb5 3.a6 Ne6 4.Bb6 Nhg5 5.a7 Nxf3+ 6.Kh1 f5 7.exf5 Nxh2 >>8.Kxh2 >> ² (0.60) Depth: 14/28 00:01:10 23216kN >>1.Nxb5 cxb5 2.Bxb5 axb5 3.a6 f6 4.Bxf4 Ng5 5.Bxg5 fxg5 6.a7 Ke8 7.a8Q+ Ke7 >> ± (0.87) Depth: 14/28 00:01:37 32580kN >>1.Nxb5 cxb5 2.Bxb5 axb5 3.a6 f6 4.Bxf4 Ng5 5.Bxg5 Bh8 >> ± (1.14) Depth: 14/28 00:02:13 44330kN >>1.Nxb5 cxb5 2.Bxb5 Ng5 3.Bxa6 Nxf3+ 4.Kh1 Kd6 5.b5 f5 6.exf5 gxf5 7.b6 Kc6 >>8.Bb5+ Kb7 9.a6+ Kb8 >> ± (1.30) Depth: 14/30 00:02:45 54838kN Comet finds a bigger score but the reason is mainly positional reason. >>Position 2: Solution 1.Nxf6 >>[D]r1b2k1r/pp2p2p/5pp1/1n1NB3/8/1P4P1/P1P4P/2KR3R w >>crafty 19.8 WB2 6 MB: >>D15 19:35 0.68 1. Bb2 Be6 2. Rhf1 Bxd5 3. Rxd5 a6 4. a4 Na7 5. Rd7 b5 6. Bd4 >>Nc6 7. Bc5 Kf7 8. axb5 axb5 9. Kd2 Crafty finds advantage for white for another move. >>Analysis by Comet B27: >>1.Nxf6 exf6 2.Rd8+ Kg7 3.Bxf6+ Kxf6 4.Rxh8 Kg7 5.Re8 Nd6 6.Re7+ Kh6 7.Rd1 Nf5 >>8.Rf7 >> = (0.22) Depth: 12/33 00:01:34 30250kN Comet find smaller advantage for the move to find. >>Position 5 : Solution 1.Nxg6 >>[D]r1b2r2/pp1nqn1k/2pp2pb/4Pp1p/2PP1p1N/2N3BP/PPQ1B1P1/3RR1K1 w >>crafty 19.8 WB2 6 MB: >>D14 40:38 0.58 1. exd6 Qxd6 2. Bf2 Re8 3. Bxh5 Rxe1+ 4. Rxe1 gxh5 5. Qxf5+ >>Kg7 6. Re6 Qf8 7. Qxh5 Kh7 8. Ng6 Qg7 9. Qf5 Kg8 10. Nxf4 >> >> >>Ruffian 1.0.1 UCI 13 MB: >>D14 08:41 0.11 Nh4xg6 Kh7xg6 Qc2xf5 Kg6g7 Be2d3 Rf8h8 Qf5g6 Kg7f8 e5e6 f4xg3 >>e6xf7 Bh6e3 Kg1h1 Qe7g5 Qg6xd6 Kf8xf7 Nc3e4 Qg5h6 Qd6xg3 Be3xd4 Again positional problem Ruffian has smaller score than Crafty. Only in 2 positions I see superior tactics of programs relative to Crafty. I am not sure if all the solutions are correct so I am not sure if Crafty has inferior evaluation(it seems to be the case in the first position because white get increasing advantage but I have doubts about positions 2 and 5). Uri
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