Author: Uri Blass
Date: 04:16:21 09/25/04
Go up one level in this thread
On September 25, 2004 at 06:30:48, Kurt Utzinger wrote: >On September 25, 2004 at 06:08:19, Kurt Utzinger wrote: > >>On September 25, 2004 at 05:03:20, Joachim Rang wrote: >> >>>Hi, >>> >>>if Arno Nickel chooses to play 13...h6 than we soon may reach the following >>>position in the first game: >> >>1.e4 e6 2.d4 d5 3.Sd2 c5 4.exd5 Dxd5 5.Sgf3 cxd4 6.Lc4 Dd6 7.0-0 >>Sf6 8.Sb3 Sc6 9.Sbxd4 Sxd4 10.Sxd4 a6 11.Te1 Dc7 12.De2 Lc5 >>13.c3 h6? >> >>>[D]r1b1k2r/1pq2pp1/p3pn1p/2b5/2BN4/2P5/PP2QPPP/R1B1R1K1 w kq - 0 14 >>> >>>which engine chooses the strong move and novelty 14. Nf5! >>> >>>After 14...0-0 15.Nxh6! gxh6 16.Bxh6 white is winning, so black has to respond >>>with 14...Kf8 which leaves his rook out of play for a while (though the position >>>is perhaps still okay for black). >>> >>>regards Joachim >> >> Why on earth should Arno Nickel choose such a bad >> move like 13...h6? >> Kurt > > It is obviously not so easy for engines to find > the refutation 14.Nf5 > >Time Depth Score Positions Moves >0:00 1/5 0.35 28462 14.g3 b5 15.Bf4 Qb7 16.Nb3 Bxf2+ > 17.Qxf2 bxc4 >0:01 1/6 0.35 88648 14.g3 b5 15.Bf4 Qb7 16.Nb3 Bxf2+ > 17.Qxf2 bxc4 >0:03 1/7 0.20 223213 14.g3 b5 15.Bf4 Qb7 16.Bd3 O-O > 17.Qf3 Bxd4 18.Qxb7 Bxb7 19.cxd4 >0:09 1/8 0.40 619898 14.g3 b5 15.Bf4 Qb6 16.Bd3 O-O > 17.Nb3 Bd6 18.Bxd6 Qxd6 >0:23 1/9 0.18 1672351 14.g3 b5 15.Bf4 Qb6 16.Bd3 Bb7 > 17.Be5 O-O 18.Bxf6 gxf6 19.Qg4+ Kh8 >1:10 1/10 0.28 5198817 14.g3 O-O 15.Bf4 Bd6 16.Bxd6 Qxd6 > 17.Rad1 Qc7 18.Bd3 Bd7 19.Nb3 Ba4 >2:58 1/11 0.16 13845346 14.g3 b5 15.Bf4 Qb6 16.Bd3 Bb7 > 17.a4 bxa4 18.Be5 O-O 19.Bxf6 gxf6 > 20.Qg4+ Kh8 >4:37 1/11 0.21 21241066 14.Bd3 O-O 15.Qf3 e5 16.Nf5 Bxf5 > 17.Bxf5 Rad8 18.b4 Ba7 19.Qg3 >10:35 1/12 0.29 48941392 14.Bd3 Bd6 15.Nf3 O-O 16.Ne5 Bxe5 > 17.Qxe5 Qxe5 18.Rxe5 Rd8 19.Be2 > Bd7 20.Be3 Bc6 21.Rc5 Rac8 Yes Yace needs some minutes to find an advantage even many plies after it(I hope that the line that I post is correct) Moves were suggested by Fritz8 but I do not trust that program because it likes to sacrifice material for nothing as proved in WCCC and I already saw it earlier so I checked by a materialistic program and I consider yace to be materialistic program that often underestimate king safety. [Event "?"] [Site "?"] [Date "????.??.??"] [Round "?"] [White "New game"] [Black "?"] [Result "*"] [SetUp "1"] [FEN "r1b1k2r/1pq2pp1/p3pn1p/2b5/2BN4/2P5/PP2QPPP/R1B1R1K1 w kq - 0 1"] [PlyCount "9"] 1. Nf5 O-O 2. Nxh6+ gxh6 3. Bxh6 Rd8 (3... Be7) 4. Qf3 Be7 5. Bb3 * note that 3...Rd8 is not forced so even if this lines. New game, [D]r1br2k1/1pq1bp2/p3pn1B/8/8/1BP2Q2/PP3PPP/R3R1K1 b - - 0 1 Analysis by Yace 0.99.87: 5...Qxc3 6.Qxc3 +- (8.00) Depth: 1 00:00:00 5...Qxh2+ 6.Kxh2 +- (7.32) Depth: 1 00:00:00 5...Qxh2+ 6.Kxh2 +- (7.32) Depth: 1 00:00:00 5...Bd7 µ (-1.39) Depth: 1 00:00:00 5...Bd7 µ (-1.39) Depth: 1 00:00:00 5...Bd7 6.Rad1 µ (-1.17) Depth: 2 00:00:00 5...Bd7 6.Rad1 µ (-1.17) Depth: 2 00:00:00 5...Bd7 6.Rad1 Rac8 µ (-1.32) Depth: 3 00:00:00 5...Bd7 6.Rad1 Rac8 µ (-1.32) Depth: 3 00:00:00 5...Bd7 6.Rad1 Bc6 7.Qe3 µ (-1.29) Depth: 4 00:00:00 5...Bd7 6.Rad1 Bc6 7.Qe3 µ (-1.29) Depth: 4 00:00:00 5...Bd7 6.Bf4 Qc6 7.Qg3+ Kf8 8.Bh6+ Ke8 9.Rad1 µ (-1.17) Depth: 5 00:00:00 5...Bd7 6.Bf4 Qc6 7.Qg3+ Kf8 8.Bh6+ Ke8 9.Rad1 µ (-1.17) Depth: 5 00:00:00 5...Bd7 6.Re3 Bc6 7.Qg3+ Qxg3 8.Rxg3+ Kh7 9.Bf4 µ (-1.20) Depth: 6/17 00:00:00 148kN 5...Bd7 6.Re3 Bc6 7.Qg3+ Qxg3 8.Rxg3+ Kh7 9.Bf4 µ (-1.20) Depth: 6/21 00:00:00 188kN 5...Bd7 6.Re3 Bc6 7.Qg3+ Qxg3 8.Rxg3+ Kh7 9.Bf4 Bc5 10.Re1 µ (-1.06) Depth: 7/21 00:00:01 289kN 5...Bd7 6.Re3 Bc6 7.Qg3+ Qxg3 8.Rxg3+ Kh7 9.Bf4 Bc5 10.Re1 µ (-1.06) Depth: 7/21 00:00:01 813kN 5...Bd7 6.Re3 Bc6 7.Qg3+ Qxg3 8.Rxg3+ Kh7 9.Bg5 Kh8 10.Rd1 Rac8 µ (-1.15) Depth: 8/21 00:00:01 1141kN 5...Bd7 6.Re3 Bc6 7.Qg3+ Qxg3 8.Rxg3+ Kh7 9.Bg5 Kh8 10.Rd1 Rac8 µ (-1.15) Depth: 8/23 00:00:02 1617kN 5...Bd7 6.Re3 Bc6 7.Qh3 Kh7 8.Rg3 Qxg3 9.hxg3 Kh8 µ (-0.75) Depth: 9/30 00:00:03 3649kN 5...Bd7 6.Re3 µ (-0.75) Depth: 9/30 00:00:04 5093kN 5...a5 6.Bf4 Qc6 7.Qxc6 bxc6 8.Rad1 Rxd1 9.a3 Bxa3 10.bxa3 µ (-0.76) Depth: 9/34 00:00:13 14838kN 5...a5 6.Rad1 Rxd1 7.Rxd1 a4 8.Bc2 Bd7 9.Qf4 Qxf4 10.Bxf4 µ (-0.89) Depth: 9/34 00:00:15 17524kN 5...a5 6.Rad1 Rxd1 7.Rxd1 a4 8.Bc2 Bd7 9.Qf4 Qxf4 10.Bxf4 µ (-0.89) Depth: 9/34 00:00:16 18378kN 5...a5 6.Re3 Ra6 7.Qg3+ Qxg3 8.Rxg3+ Kh7 9.Bf4 Kh8 10.Rd1 Rxd1+ 11.Bxd1 Bd6 12.Bxd6 Rxd6 µ (-0.87) Depth: 10/34 00:00:28 31935kN 5...a5 6.Re3 Ra6 7.Qg3+ Qxg3 8.Rxg3+ Kh7 9.Bf4 Kh8 10.Rd1 Rxd1+ 11.Bxd1 Bd6 12.Bxd6 Rxd6 µ (-0.87) Depth: 10/34 00:00:38 42610kN 5...a5 6.Re3 Ra6 7.Qh3 Bd6 8.Bg5 e5 9.Bxf6 Re8 10.Rg3+ Kf8 ³ (-0.47) Depth: 11/34 00:00:50 54753kN 5...a5 6.Re3 a4 7.Bc2 e5 8.Bf5 Bxf5 9.Qxf5 Kh8 10.Rxe5 Qd7 11.Rae1 ³ (-0.28) Depth: 11/34 00:01:06 73006kN 5...a5 6.Re3 a4 7.Bc2 e5 8.Bf5 Bxf5 9.Qxf5 Kh8 10.Rxe5 Qd7 11.Rae1 ³ (-0.28) Depth: 11/35 00:02:16 149536kN 5...a5 6.Re3 a4 7.Qh3 Bd6 8.Qh4 Bxh2+ 9.Kh1 Kh7 10.Qxf6 Qxc3 11.bxc3 axb3 = (0.12) Depth: 12/36 00:02:40 174004kN 5...a5 6.Re3 Bd7 7.Qh3 Bd6 8.Bg5 Nh7 9.Bxd8 Rxd8 10.Qg4+ Kf8 11.Qh4 Kg8 12.Rd1 = (0.18) Depth: 12/41 00:03:28 229685kN 5...Bd7 6.Qh3 Bf8 7.Bg5 Bg7 8.Bxf6 Bxf6 9.Qg3+ Qxg3 10.hxg3 = (0.17) Depth: 12/41 00:04:08 276336kN 5...Bd7 6.Qh3 Bf8 7.Bg5 Bg7 8.Qh4 Ne8 9.Bxd8 Rxd8 10.Rad1 Nf6 = (0.16) Depth: 12/41 00:04:43 315613kN 5...Bd7 6.Qh3 Bf8 7.Bg5 Bg7 8.Qh4 Ne8 9.Bxd8 Rxd8 10.Rad1 Nf6 = (0.16) Depth: 12/41 00:09:01 606453kN (, MyTown 25.09.2004) Uri
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