Author: Uri Blass
Date: 04:17:40 11/22/01
Go up one level in this thread
On November 22, 2001 at 06:04:25, Uri Blass wrote: >On November 21, 2001 at 18:05:47, Gian-Carlo Pascutto wrote: > >>On November 21, 2001 at 13:14:48, Peter Berger wrote: >> >>>[D]r1br4/1pq2p1p/p3pnkB/8/8/1BP2Q2/PP3PPb/R3R2K b - - 0 18 am Nd5 bm Nh5 ;id >>>"Adams-Dreev,Wijk an Zee 1996" >> >>Sjeng: go >>Middlegame phase. >>Clearing hash... >>Time for move : 60000000 >> 2 286 227 1103 Bd6 ?? >> 2 387 228 1509 Be5 ! >> 2 434 230 3314 Nd5 ! >> 2 434 232 5509 Nd5 Qg4+ Kxh6 Qh3+ Kg6 Qxh2 Qxh2+ Kxh2 >> 3 417 238 11568 Nd5 Rad1 Kxh6 Qh3+ Kg6 Qxh2 Qxh2+ Kxh2 >> 3 417 250 19000 Nd5 Rad1 Kxh6 Qh3+ Kg6 Qxh2 Qxh2+ Kxh2 >> 4 396 262 36245 Nd5 Re4 Kxh6 Rh4+ Kg7 Bxd5 >> 4 397 270 45483 Ng8 ! >> 4 397 282 60721 Nh5 ! >> 4 397 295 77776 Be5 ! >> 4 397 312 96682 Nd5 Re4 Kxh6 Rh4+ Kg7 Bxd5 >> 5 367 351 170118 Nd5 ?? >> 5 284 425 302456 Nd5 Bc1 Bf4 Bxd5 Bxc1 Be4+ f5 Raxc1 fxe4 Rxe4 >> 5 285 486 409997 e5 ! >> 5 301 516 478384 e5 Bc2+ e4 Bxe4+ Nxe4 Rxe4 Bf5 Rh4 Bd6 >> 6 271 521 486685 e5 ?? >> 6 173 737 850439 e5 Bc2+ e4 Bxe4+ Nxe4 Rxe4 Bd6 Rh4 Qc5 Rf1 >> 6 174 767 896098 Nh5 ! >> 6 250 813 1007082 Nh5 Bc1 f5 Bxe6 Bf4 Bxc8 Rdxc8 Re6+ Kg5 Bxf4+ Nxf4 >> 7 220 841 1052812 Nh5 ?? >> 7 221 1094 1471378 Nd5 ! >> 7 245 1418 2133912 Nd5 Bxd5 Rxd5 Be3 h5 g3 Rf5 Qg2 h4 Qxh2 hxg3 fxg3 >> 8 215 1488 2267811 Nd5 ?? >> 8 211 2920 4912057 Nd5 g3 Kxh6 Bxd5 Rg8 Qe3+ Rg5 Be4 f5 Bf3 >> 8 211 3091 5364722 Nd5 g3 Kxh6 Bxd5 Rg8 Qe3+ Rg5 Be4 f5 Bf3 >> 9 181 3537 6365151 Nd5 ?? >> 9 182 9063 16175458 Nd5 !! >> 9 194 10136 18001086 Nd5 Bxd5 Rxd5 Be3 Bd6 Qg4+ Kf6 Rad1 Qa5 Kg1 Rxd1 Rxd1 >> 9 194 10138 18001129 Nd5 Bxd5 Rxd5 Be3 Bd6 Qg4+ Kf6 Rad1 Qa5 Kg1 Rxd1 Rxd1 >>10 173 23930 43215604 Nd5 Rad1 f5 Qh3 Bf4 Bxf4 Qxf4 c4 Qxf2 cxd5 exd5 Re7 >>10 173 30547 55030155 Nd5 Rad1 f5 Qh3 Bf4 Bxf4 Qxf4 c4 Qxf2 cxd5 exd5 Re7 >>11 151 58528 101184152 Nd5 Rad1 f5 Qh3 Bf4 Bxf4 Qxf4 c4 Qxf2 cxd5 exd5 Qd3 >>Qh4+ Kg1 >>11 151 75790 131344004 Nd5 Rad1 f5 Qh3 Bf4 Bxf4 Qxf4 c4 Qxf2 cxd5 exd5 Qd3 >>Qh4+ Kg1 >>12 121 136719 236880168 Nd5 ?? >>12 0 230591 401058200 Nd5 Bc1 f5 g3 Bxg3 Rg1 Nf6 Rxg3+ Ng4 Rxg4+ fxg4 >>Qxg4+ Kf7 Qh5+ Kg7 Qg5+ Kh8 Qf6+ Kg8 Qg5+ Kh8 > >I see that sjeng only found a draw score for Nd5 and did not find the game move >for white. > >If white is winning against Nd5 then the remaining question is how much time >does sjeng need to find the win for white after Nd5(in the game white played >Rad1 and not Bc1 in reply to Nd5). > >I will try to prove a positive score by letting yace to learn the game line but >I see that yace cannot see a positive score even in the final position after >1...Nd5 2.Rad1 f5 3.Bc1 Bd6 4.Bxd5 exd5 5.Rxd5 > >Here is the result after more than 16 minutes of analysis: > >New position >[D]r1br4/1pq4p/p2b2k1/3R1p2/8/2P2Q2/PP3PP1/2B1R2K b - - 0 1 > >Analysis by Yace 0.99.56: > >5...Qxc3 6.Qxc3 > +- (7.38) Depth: 1 00:00:04 >5...Ra7 > -+ (-1.57) Depth: 1 00:00:04 >5...h6 > -+ (-1.65) Depth: 1 00:00:04 >5...Qg7 > -+ (-1.66) Depth: 1 00:00:04 >5...Qc6 > -+ (-1.68) Depth: 1 00:00:04 >5...Qc4 > -+ (-1.75) Depth: 1 00:00:04 >5...Bd7 > -+ (-1.83) Depth: 1 00:00:04 >5...Kg7 > -+ (-2.00) Depth: 1 00:00:04 >5...Kg7 6.Kg1 > -+ (-1.77) Depth: 2 00:00:04 >5...Kg7 6.Bg5 Rg8 > -+ (-1.84) Depth: 3 00:00:04 >5...Kg7 6.Bg5 Rg8 7.Kg1 > -+ (-1.62) Depth: 4 00:00:04 >5...Qc6 6.Rxf5 Bxf5 7.Kg1 > -+ (-1.63) Depth: 4 00:00:04 >5...Qc6 6.b3 Kg7 7.Kg1 > -+ (-1.66) Depth: 4 00:00:04 >5...Qc6 6.Qd3 a5 7.Bf4 Ra6 8.Bxd6 > µ (-1.35) Depth: 5 00:00:05 74kN >5...Kg7 6.Bg5 Rg8 7.Bd8 Rxd8 8.Rxd6 > µ (-1.36) Depth: 5 00:00:05 74kN >5...Kg7 6.Bf4 Bxf4 7.Rxd8 Qxd8 8.Qxf4 > -+ (-1.57) Depth: 5 00:00:05 74kN >5...Qb6 6.Bf4 Bc5 7.g4 > -+ (-1.58) Depth: 5 00:00:05 155kN >5...Qb6 6.Kg1 Kg7 7.Bg5 Rg8 > -+ (-1.60) Depth: 5 00:00:05 155kN >5...Qb6 6.b3 Kg7 7.Bg5 Rg8 8.Kg1 > -+ (-1.47) Depth: 6 00:00:06 538kN >5...Kg7 6.Bf4 Bxf4 7.Rxd8 Qxd8 8.Rd1 > -+ (-1.48) Depth: 6 00:00:06 571kN >5...Kg7 6.Qd3 Bf4 7.Rxd8 Bxc1 > -+ (-1.47) Depth: 6 00:00:06 571kN >5...Qb6 6.b3 Kg7 7.Bg5 Rg8 8.Kg1 > -+ (-1.47) Depth: 6 00:00:06 571kN >5...a5 6.Qd3 Be7 7.Rxe7 Rxd5 8.Bf4 > -+ (-1.48) Depth: 6 00:00:07 1018kN >5...a5 6.Qh3 Bf8 7.Bf4 Qb6 8.Be3 > -+ (-1.48) Depth: 6 00:00:07 1018kN >5...a5 6.Red1 Ra6 7.Bf4 Kf6 8.Be5+ Kf7 9.Qh5+ Kg8 10.Bf6 > -+ (-1.45) Depth: 7 00:00:09 1883kN >5...a5 6.Red1 Ra6 7.Bf4 Bxf4 8.Rxd8 Qc6 9.Qxc6+ Kf7 > µ (-1.05) Depth: 8 00:00:12 3194kN >5...a5 6.Red1 Ra6 7.Bf4 Bxf4 8.Rxd8 Rd6 9.R8xd6+ Bxd6 10.Qd5 > ³ (-0.50) Depth: 8 00:00:13 3612kN >5...Qb6 6.Qh3 h5 7.Rxd6+ Rxd6 8.Bf4 Kf7 9.Qxh5+ Rg6 10.Qh7+ Rg7 11.Re6 > ³ (-0.51) Depth: 8 00:00:16 4947kN >5...Qb6 6.Qh3 h5 7.Qh4 Rh8 8.Red1 Bc7 9.Kg1 > µ (-1.05) Depth: 8 00:00:17 5317kN >5...Rg8 6.Qd3 Bf4 7.Rd6+ Qxd6 8.Re5 Bxe5 9.Kg1 > µ (-1.06) Depth: 8 00:00:22 7519kN >5...Rg8 6.Qe3 Kf7 7.Qh6 Bf8 8.Qxh7+ Rg7 9.Qh5+ Kg8 10.Bh6 Rh7 > µ (-1.15) Depth: 8 00:00:24 8254kN >5...Rg8 6.Qe3 Kf7 7.Qh6 Bf8 8.Qxh7+ Rg7 9.Qh5+ Kg8 10.Bh6 Qc6 11.Bxg7 > µ (-0.91) Depth: 9 00:00:37 13342kN >5...Rg8 6.Qe3 Kf7 7.Qh6 Bf8 8.Qxh7+ Rg7 9.Qh5+ Kg8 10.Bh6 Re7 11.Qg6+ Bg7 >12.Rxe7 > µ (-0.95) Depth: 10 00:01:29 34189kN >5...Rg8 6.Qe3 Kf7 7.Qh3 Qc6 8.Rxf5+ Bxf5 9.Qxf5+ Kg7 10.Be3 Raf8 11.Qg5+ Kh8 >12.Bd4+ Be5 13.Bxe5+ Rf6 14.Bxf6+ Qxf6 15.Qxf6+ Rg7 > ³ (-0.55) Depth: 11 00:02:24 55071kN >5...Rg8 6.Qe3 Kf7 7.Qh3 Qc6 8.Rxf5+ Bxf5 9.Qxf5+ Kg7 10.Be3 Kh8 11.Bd4+ Rg7 >12.Bxg7+ Kxg7 13.Qg5+ Kf7 14.Qh5+ > ³ (-0.26) Depth: 11 00:03:52 92855kN >5...Bf8 6.Bf4 Qxf4 7.Qxf4 Rxd5 8.Qg3+ Kf7 9.Kg1 > ³ (-0.27) Depth: 11 00:06:55 170552kN >5...Bf8 6.Bf4 Qxf4 7.Qxf4 Rxd5 8.Qf3 Rd6 9.Re8 Rf6 10.Qg3+ Kf7 11.Qe5 Kg6 > ³ (-0.69) Depth: 11 00:07:43 190316kN >5...Bf8 6.Bf4 Qxf4 7.Qxf4 Rxd5 8.Qc4 Rd8 9.Qg8+ Kh6 10.f4 Bg7 11.Qxd8 Be6 >12.Rxe6+ Kh5 > ³ (-0.29) Depth: 12 00:08:17 203467kN >5...Bf8 6.Bf4 Qxf4 7.Qxf4 Rxd5 8.Qc4 Rd8 9.Qg8+ Kf6 10.Qh8+ Kf7 11.Qxh7+ Bg7 >12.Qh5+ Kf8 13.Kg1 Bd7 14.Qh7 > = (-0.03) Depth: 12 00:11:16 277886kN > >(Blass, Tel-aviv 22.11.2001) some more analysis 5...Bf8 6.Bf4 Qxf4 7.Qxf4 Rxd5 8.Qc4 Rd8 9.Qg8+ Kf6 10.Qh8+ Kg6 11.Qg8+ = (0.00) Depth: 13 00:22:13 543806kN (Blass, Tel-aviv 22.11.2001) I gave yace the position after 5...Bf8 6.Bf4 Qxf4 7.Qxf4 Rxd5 and I get the following: New position r1b2b2/1p5p/p5k1/3r1p2/5Q2/2P5/PP3PP1/4R2K w - - 0 1 Analysis by Yace 0.99.56: 8.Qxf5+ Bxf5 -+ (-10.52) Depth: 1 00:00:00 8.Qc4 Rd8 9.Qg8+ Kf6 10.Re8 Rxe8 11.Qxh7 = (0.00) Depth: 1 00:00:00 8.Qc4 Rd8 9.Qg8+ Kf6 10.Re8 Rxe8 11.Qxh7 = (0.00) Depth: 2 00:00:00 8.Qc4 Rd8 9.Qg8+ Kf6 10.Re8 Rxe8 11.Qxh7 = (0.00) Depth: 3 00:00:00 8.Qc4 Rd8 9.Qg8+ Kf6 10.Re8 Rxe8 11.Qxh7 = (0.00) Depth: 4 00:00:00 8.Qc4 Rd8 9.Qg8+ Kf6 10.Re8 Rxe8 11.Qxh7 = (0.00) Depth: 5 00:00:00 6kN 8.Qc4 Rd8 9.Qg8+ Kf6 10.Re8 Rxe8 11.Qxh7 = (0.00) Depth: 6 00:00:00 17kN 8.Qc4 Rd8 9.Qg8+ Kf6 10.Re8 Rxe8 11.Qxh7 = (0.00) Depth: 7 00:00:00 58kN 8.Qc4 Rd8 9.Qg8+ Kf6 10.Re8 Rxe8 11.Qxh7 = (0.00) Depth: 8 00:00:00 97kN 8.Qc4 Rd8 9.Qg8+ Kf6 10.Qg5+ Kxg5 11.Re3 = (0.00) Depth: 9 00:00:00 218kN 8.Qc4 Rd8 9.Qg8+ Kf6 10.Qh8+ Kg6 11.Qg8+ Kf6 12.Qh8+ Kg6 13.Qg8+ = (0.00) Depth: 10 00:00:05 2176kN 8.Qc4 Rd8 9.Qg8+ Kf6 10.Qh8+ Kg6 11.Qg8+ = (0.00) Depth: 11 00:00:25 9688kN 8.Qc4 Rd8 9.Qg8+ Kf6 10.Qxh7 Bd7 11.Qh4+ Kg6 12.Qg3+ Kf6 13.Qc7 b5 14.Rd1 Rac8 15.Qb6+ Kg5 16.Qxa6 Be8 17.Rd4 = (0.08) Depth: 14 00:18:05 386893kN (Blass, Tel-aviv 22.11.2001) Yace does not see a win for white but at least it can see a small advantage for white.
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