Author: Uri Blass
Date: 12:22:55 08/16/01
Go up one level in this thread
On August 16, 2001 at 04:42:20, Scott Gasch wrote: >This is a position that can come up in the sicilian dragon. My engine does not >see it until it's way too late, even in standard time controls. > >[D] 3qr1k1/pp1bppb1/3p2p1/2rN2Bn/2nNPPp1/1B6/PPP1Q3/2KR3R b - - 0 1 > >The idea is to avoid Ng3 because it leads to something like this: > >[D] 3qr1k1/pp1bppb1/3p2p1/2rN2B1/2nNPPp1/1B6/PPP4Q/2K4R b - - 0 3 > >I bet that the strong amateurs and pros will avoid this move quickly. I need >about 6M nodes and 10 ply to see its bad... even then my engine still wants to >play it as it thinks the king can sneak out. It can't, according to opening >book literature. > >Scott New position 3qr1k1/pp1bppb1/3p2p1/2rN2Bn/2nNPPp1/1B6/PPP1Q3/2KR3R b - - 0 1 Analysis by Deep Fritz: 1...Bxd4-- = (-0.22) Depth: 1/3 00:00:00 1...Ng3 2.Qd3 Nxh1 3.Bxc4 -+ (-2.06) Depth: 4/17 00:00:00 4kN 1...Ng3 2.Qd3 Nxh1 3.Bxc4 -+ (-2.06) Depth: 4/17 00:00:00 4kN 1...Ng3 2.Qd3 Nxh1 3.Bxc4 -+ (-2.06) Depth: 4/17 00:00:00 4kN 1...Ng3 2.Qd3 Nxh1 3.Bxc4 -+ (-2.06) Depth: 4/17 00:00:00 4kN 1...Ng3 2.Qd3 Nxh1 3.Bxc4 -+ (-2.06) Depth: 4/17 00:00:00 4kN 1...Ng3 2.Qd3 Nxh1 3.Bxc4 -+ (-2.06) Depth: 4/17 00:00:00 4kN 1...Ng3 2.Qd3 Nxh1 3.Bxc4 -+ (-2.06) Depth: 4/17 00:00:00 4kN 1...Ng3 2.Qd3 Nxh1 3.Rxh1 b5 -+ (-2.31) Depth: 5/23 00:00:00 20kN 1...Ng3 2.Qd3 Nxh1 3.Rxh1 Na5 4.Kb1 Bxd4 -+ (-2.47) Depth: 6/23 00:00:00 40kN 1...Ng3 2.Qd3 Nxh1 3.Rxh1 Na5 4.Kb1 Bxd4 5.Qxd4 Nxb3 -+ (-2.47) Depth: 7/22 00:00:00 116kN 1...Ng3 2.Qd3 Nxh1 3.Rxh1 Na5 4.Kb1 g3 5.c3 Nxb3 -+ (-2.44) Depth: 8/30 00:00:00 394kN 1...Ng3-- -+ (-2.13) Depth: 9/27 00:00:01 1129kN 1...Ng3-- -+ (-2.13) Depth: 9/27 00:00:02 1425kN 1...Ng3-- -+ (-1.81) Depth: 10/30 00:00:05 3963kN 1...Ng3-- 2.Qh2 Nxh1 3.Rxh1 f6 4.Bh6 Bh8 5.Bf8 Bg7 6.Bxg7 µ (-1.09) Depth: 10/34 00:00:08 6212kN 1...Ng3-- µ (-0.78) Depth: 11/34 00:00:28 19693kN 1...Ng3-- 2.Qh2 Nxh1 3.Rxh1 f6 4.Bh6 g3 5.Qxg3 Bxh6 6.Rxh6 g5 7.fxg5 = (-0.09) Depth: 11/35 00:00:40 27689kN 1...Na5! = (-0.13) Depth: 11/35 00:00:43 30024kN 1...Na5! 2.Qe3 Nf6 3.Nc3 e5 4.fxe5 dxe5 5.Bxf7+ Kxf7 6.Ne6 µ (-0.75) Depth: 11/39 00:01:53 74210kN 1...b5! µ (-0.78) Depth: 11/39 00:03:00 117883kN (Blass, Tel-aviv 16.08.2001) New position 3qr1k1/pp1bppb1/3p2p1/2rN2Bn/2nNPPp1/1B6/PPP1Q3/2KR3R b - - 0 1 Analysis by Gambit Tiger 2.0: 1...Ng3 2.Qh2 Nxh1 3.Rxh1 Nxb2 4.Qh7+ Kf8 5.f5 Nc4 6.Bxc4 Rxc4 -+ (-2.51) Depth: 8 00:00:00 83kN 1...Ng3 2.Qh2 Nxh1 3.Rxh1 Kf8 4.Qh7 Qa5 5.c3 Qd8 -+ (-1.66) Depth: 9 00:00:00 185kN 1...b5 2.Qf2 a5 3.Bxc4 Rxc4 4.f5 a4 5.c3 a3 6.Qh2 Qc8 µ (-1.10) Depth: 10 00:00:20 3930kN 1...Na5 2.Qe3 Nxb3+ 3.Nxb3 Rc4 4.f5 Nf6 5.fxg6 Rxe4 6.Qf2 fxg6 7.Nf4 Qb6 ³ (-0.56) Depth: 11 00:01:48 21718kN 1...Na5 2.Qe3 Nf6 3.Bh6 Nxd5 4.Bxd5 Bxh6 5.Rxh6 e6 6.b4 exd5 7.bxc5 dxc5 8.Nb3 Rxe4 9.Qxc5 µ (-0.94) Depth: 12 00:02:21 28546kN 1...Na5 2.Qe3 Nf6 3.f5 Nxb3+ 4.Nxb3 Nxd5 5.exd5 Rc4 6.fxg6 Bf5 7.Rd2 Bxg6 8.Rdh2 Be4 ³ (-0.66) Depth: 13 00:03:11 38969kN (Blass, Tel-aviv 16.08.2001) New position 3qr1k1/pp1bppb1/3p2p1/2rN2Bn/2nNPPp1/1B6/PPP1Q3/2KR3R b - - 0 1 Analysis by Junior 7: 1...Nd2 2.Qxd2 g3 +- (1.52) Depth: 3 00:00:00 1...Nb6 2.f5 Nxd5 ³ (-0.39) Depth: 3 00:00:00 1...Na5 2.f5 Nxb3+ ³ (-0.67) Depth: 3 00:00:00 1...Ng3 2.Qd3 Nxh1 3.Bxc4 -+ (-1.75) Depth: 3 00:00:00 1kN 1...Ng3 2.Qd3 Nxh1 3.Rxh1 b5 4.Bh6 -+ (-1.89) Depth: 6 00:00:00 18kN 1...Ng3 2.Qh2 Nxh1 3.Rxh1 Na5 4.Qh7+ Kf8 5.Bh6 Nxb3+ 6.Nxb3 Bxh6 7.Rxh6 µ (-0.99) Depth: 9 00:00:00 384kN 1...Nxb2 2.Kxb2 Ng3 3.Qd2 Nxh1 4.Rxh1 g3 5.Kb1 µ (-1.15) Depth: 9 00:00:00 475kN 1...Nxb2 2.Kxb2 Rxd5 3.exd5 Ng3 4.Qe3 Nxh1 5.Rxh1 g3 6.f5 Bxf5 = (-0.05) Depth: 12 00:00:06 4655kN 1...Nb6 2.f5 Ng3 3.Qh2 Nxh1 4.fxg6 Nxd5 5.Qxh1 f6 6.Bxd5+ e6 7.Qh7+ Kf8 8.Nxe6+ Bxe6 µ (-0.79) Depth: 12 00:00:10 6780kN 1...b5 2.Bh4 a6 3.Qe1 Rc8 4.Bf2 µ (-0.82) Depth: 12 00:00:11 7981kN 1...b5 2.f5 ³ (-0.52) Depth: 15 00:00:55 37407kN 1...b5 2.f5 g3 3.c3 Nf6 4.Bxf6 Bxf6 5.fxg6 fxg6 6.Nxf6+ exf6 7.Bxc4+ bxc4 8.Rdg1 g2 9.Qxg2 = (0.00) Depth: 17 00:05:38 219644kN (Blass, Tel-aviv 16.08.2001)
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