Author: Stan Arts
Date: 03:48:56 10/18/03
Go up one level in this thread
>[D]r2q1k1r/p1n1pp1p/1pp3p1/2p1b3/4N1b1/3P1N2/PPP2PPP/R1BQR1K1 w - - 0 13 > >This was a position I got (unfoutunately I was black). White finished in style >with Nxe5 Bxd1 Bh6+ Kg8 Nxc6 Qd7 Nf6+ exf6 Ne7+ Qxe7 Rxe7, and black is totally >lost. Can any computers get this (I don't know if it's hard or a piece of cake), >but while my program has no problem seeing all the pretty tactics. It evaluates >the position at the end as clearly good for black (black can take on c2 and then >d3, and be two pawns up) > >have fun. Hello Neurosis 1.4 (next version) on slow PIII-550 mHz, 32 MB hash Thinks Legal moves: 35 Ply Score Time Nodes Best move and expected line ------------------------------------------------------------ 2 -83 6 1081 h3 Bh5 3 -74 6 1885 h3 Bxf3 Qxf3 4 -80 17 9431 h3 Bxf3 Qxf3 Kg8 5 -73 94 85697 h3 Bxf3 Qxf3 Qd4 Kh1 6 -74 264 185582 h3 Bxf3 Qxf3 Qd4 Bh6+ Kg8 Ra1-b1 7 -71 643 402790 h3 Bxf3 Qxf3 Bg7 c3 Kg8 Bf4 8 -74 2620 1594910 h3 Bxf3 Qxf3 Bg7 c3 Kg8 Bg5 Nd5 9 -73 8272 5489353 h3 Bxf3 Qxf3 Bg7 Ng5 Qd5 Qe2 e5 Bd2 10 -77 32741 21301007 h3 Bxf3 Qxf3 Bg7 Rb1 Kg8 Bg5 f5 Nd2 Nd5 11 -74 111296 68393957 h3 Bxf3 Qxf3 Bg7 Ng5 Qd5 Re4 Rc8 Qe2 Bf6 c4 Total nodes:245686375 n/sec:67220 (Q-nodes:29278159 max depth:23) Then, after forcing Nxe5, and Bxd1, it sees the combination you described but thinks the same as your program, that black will be up atleast 2 pawns Legal moves: 39 Ply Score Time Nodes Best move and expected line ------------------------------------------------------------ 2 -367 0 871 Bh6+ Kg8 Ra1xd1 Qd5 Nxg6 hxg6 Nxc5 3 -367 0 990 Bh6+ Kg8 Ra1xd1 Qd5 Nxg6 hxg6 Nxc5 4 -368 11 7536 Bh6+ Kg8 Ra1xd1 Qd4 5 -309 55 34003 Bh6+ < + > Ke8 Nxc6 Nd5 5 -286 55 38144 Bh6+ Kg8 Nxc6 Qd7 Nf6+ exf6 Ne7+ Qxe7 Rxe7 6 -286 165 100590 Bh6+ Kg8 Nxc6 Qd7 Nf6+ exf6 Ne7+ Qxe7 Rxe7 7 -286 412 249360 Bh6+ Kg8 Nxc6 Qd7 Nf6+ exf6 Ne7+ Qxe7 Rxe7 8 -286 1440 995841 Bh6+ Kg8 Nxc6 Qd7 Nf6+ exf6 Ne7+ Qxe7 Rxe7 9 -286 4219 2841899 Bh6+ Kg8 Nxc6 Qd7 Nf6+ exf6 Ne7+ Qxe7 Rxe7 10 -289 27771 20586791 Bh6+ Kg8 Nxc6 Qd7 Nf6+ exf6 Ne7+ Qxe7 Rxe7 Nd5 11 -293 95813 65893354 Bh6+ Kg8 Nxc6 Qd7 Nf6+ exf6 Ne7+ Qxe7 Rxe7 Nd5 Rd7 Total nodes:84670941 n/sec:70859 (Q-nodes:6996659 max depth:22) But I've also run Delfi 4.3 with 24 MB hash. 3 -34 0 961 e4xc5 e5xh2 g1xh2 b6xc5 4 -74 2 3001 e4xc5 e5xh2 g1xh2 d8d6 h2g1 d6xc5 4 -55 5 7338 c1h6 f8g8 a1b1 d8d5 c2c4 5 -57 15 25033 c1h6 e5g7 h6xg7 f8xg7 d1e2 g4xf3 e2xf3 c7e6 5 -55 21 36092 e4xc5 e5xh2 g1xh2 d8d6 h2g1 d6xc5 c1h6 f8g8 5 -52 26 47422 h2h3 g4xf3 d1xf3 d8d4 c1h6 f8e8 6 -49 39 72214 h2h3 g4xf3 d1xf3 d8d4 c1h6 f8e8 c2c3 7 -48 92 180005 h2h3 g4xf3 d1xf3 d8d5 c1h6 f8e8 c2c4 d5d4 8 -42 222 470528 h2h3 g4xf3 d1xf3 d8d5 c1h6 e5g7 c2c4 d5h5 f3f4 h5xh6 f4xc7 g7xb2 c7xc6 b2xa1 c6xa8 9 -38 426 960000 h2h3 g4xf3 d1xf3 e5g7 c2c4 d8d7 a1b1 c7e6 c1g5 10 -47 903 2123241 h2h3 g4xf3 d1xf3 e5g7 c2c3 d8d5 c1f4 c7e6 c3c4 11 -50 3655 8497325 h2h3 g4xf3 d1xf3 e5g7 c2c3 d8d5 f3g3 c7e6 e4g5 e6xg5 c1xg5 e7e5 12 -52 10518 23875408 h2h3 g4xf3 d1xf3 e5g7 e4c3 d8d7 c1g5 c7e6 g5e3 a8d8 a1d1 g7e5 13 -53 33411 76843683 h2h3 g4xf3 d1xf3 e5g7 e4g5 d8d5 f3g3 e7e5 g5e4 c7e6 c1g5 d5d4 c2c3 And after forcing Nxe5 and Bxd1, it doesn't think it's winning, but does quickly give a better score then Neurosis and thinks black will be up about 1 pawn, and searching longer the score seems to be getting better (for white) but not positive yet. 3 -350 1 1310 c1h6 f8g8 e1xd1 d8d5 4 -326 2 4453 c1h6 f8g8 a1xd1 d8d5 e4c3 5 -285 5 9206 c1h6 f8g8 e5xc6 d8d7 e4f6 e7xf6 c6e7 d7xe7 e1xe7 6 -287 9 22152 c1h6 f8g8 e5xc6 d8d7 e4f6 e7xf6 c6e7 d7xe7 e1xe7 c7d5 7 -318 29 67860 c1h6 f8g8 e5xc6 d8d7 e4f6 e7xf6 c6e7 d7xe7 e1xe7 c7d5 e7d7 7 -306 79 164148 e4g5 d1xc2 g5xf7 d8d5 f7xh8 f8g7 h8f7 c2xd3 8 -350 151 331703 e4g5 f7f6 g5f7 d8e8 f7xh8 d1xc2 e1e2 f8g8 e2xc2 g8xh8 8 -121 173 408060 c1h6! f8g8 e5xc6 d8d7 e4f6 e7xf6 c6e7 d7xe7 e1xe7 d1xc2 e7xc7 c2xd3 a1e1 9 -140 237 595476 c1h6 f8g8 e5xc6 d8e8 e4f6 e7xf6 c6e7 e8xe7 e1xe7 c7d5 e7d7 d1xc2 d7xd5 a8e8 10 -140 387 1115473 c1h6 f8g8 e5xc6 d8e8 e4f6 e7xf6 c6e7 e8xe7 e1xe7 c7d5 e7d7 d1xc2 d7xd5 a8e8 10 -125 436 1251765 e5xc6.. 10 -112 500 1460768 e5xc6 d8d7 c1h6 f8g8 e4f6 e7xf6 c6e7 d7xe7 e1xe7 c7d5 e7d7 d1xc2 d7xd5 a8e8 d5d7 11 -112 671 1992374 e5xc6 d8d7 c1h6 f8g8 e4f6 e7xf6 c6e7 d7xe7 e1xe7 c7d5 e7d7 d1xc2 d7xd5 a8e8 d5d7 12 -119 1180 3574049 e5xc6 d8d7 c1h6 f8g8 e4f6 e7xf6 c6e7 d7xe7 e1xe7 c7d5 e7d7 d1xc2 d7xd5 a8e8 d5d7 e8e2 d7xa7 c2xd3 13 -105 2996 9198897 e5xc6 d8d7 c1h6 f8g8 e4f6 e7xf6 c6e7 d7xe7 e1xe7 c7d5 e7d7 d1xc2 d7xd5 a8e8 d5d7 a7a6 a1c1 14 -110 7389 21589536 e5xc6 d8d7 c1h6 f8g8 e4f6 e7xf6 c6e7 d7xe7 e1xe7 c7d5 e7d7 d1xc2 d7xd5 a8e8 d5d7 a7a6 d3d4 c2f5 15 -94 19864 57147022 e5xc6 d8d7 c1h6 f8g8 e4f6 e7xf6 c6e7 d7xe7 e1xe7 c7d5 e7d7 d1xc2 d7xd5 a8e8 d5d7 a7a6 d7d6 f6f5 d6xb6 c2xd3 16 -89 49743 140976041 e5xc6 d8d7 c1h6 f8g8 e4f6 e7xf6 c6e7 d7xe7 e1xe7 c7d5 e7d7 d1xc2 d7xd5 a8e8 d3d4 c5xd4 d5xd4 c2f5 a1d1 e8e2 Greetings Stan
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