Author: Slater Wold
Date: 17:34:43 09/03/02
Go up one level in this thread
On September 03, 2002 at 20:22:57, John Merlino wrote: >On September 03, 2002 at 20:00:53, Slater Wold wrote: > >>On September 03, 2002 at 19:35:06, John Merlino wrote: >> >>>On September 03, 2002 at 18:59:54, Slater Wold wrote: >>> >>>>[D]4rrk1/p4p2/1b1Q1n1p/4n1p1/3pb3/1P2P1PN/PB1R1P1P/3R2K1 b - - 0 23 >>>> >>>> >>>>Can you find Re6? And it wins, not draws!! >>> >>>Chessmaster 9000, on a humble PIII-600, finds it in 3:16. However, it was pretty >>>happy with Nf3+ before that, so it might also win... >>> >>>23... Nf3+ >>>24. Kf1 (forced) Nxh2+ >>>25. Ke1 Re6 (NOW Re6) >>> >>>Time Depth Score Positions Moves >>>0:00 1/3 0.32 2563 23...Nf3+ 24.Kf1 Re6 25.Qb4 Nxd2+ >>> 26.Qxd2 >>>0:00 1/4 0.15 5091 23...Nf3+ 24.Kf1 Nxd2+ 25.Rxd2 >>> Re6 26.Qb4 dxe3 >>>0:00 1/4 0.11 5812 23...Re6 24.Qb4 a5 25.Qb5 Nf3+ >>> 26.Kf1 Nxd2+ 27.Rxd2 dxe3 >>>0:00 1/5 0.11 11260 23...Re6 24.Qb4 a5 25.Qb5 Nf3+ >>> 26.Kf1 Nxd2+ 27.Rxd2 dxe3 >>>0:00 1/5 -0.04 17932 23...Nf3+ 24.Kf1 Nxh2+ 25.Ke2 Bf3+ >>> 26.Kd3 Re6 27.Qb4 dxe3 >>>0:00 1/6 -0.37 40593 23...Nf3+ 24.Kf1 Nxh2+ 25.Ke2 Re6 >>> 26.Qb4 dxe3 27.fxe3 Bf3+ 28.Kd3 >>> Bxd1 29.Rxd1 Rxe3+ 30.Kc2 Rxg3 >>> 31.Bxf6 Rxh3 >>>0:02 1/7 -0.56 167791 23...Nf3+ 24.Kf1 Nxh2+ 25.Ke1 Nf3+ >>> 26.Ke2 Re6 27.Qa3 Nxd2 28.Rxd2 Bf5 >>>0:06 1/8 -0.73 436350 23...Nf3+ 24.Kf1 Nxh2+ 25.Ke1 Re6 >>> 26.Qb4 Nf3+ 27.Kf1 Nxd2+ 28.Qxd2 >>> dxe3 29.fxe3 Ng4 >>>0:18 1/9 -0.73 1396122 23...Nf3+ 24.Kf1 Nxh2+ 25.Ke1 Re6 >>> 26.Qb4 Nf3+ 27.Kf1 Nxd2+ 28.Qxd2 >>> Bf5 29.Ng1 dxe3 >>>0:50 1/10 -1.01 3985604 23...Nf3+ 24.Kf1 Nxh2+ 25.Ke1 Re6 >>> 26.Qb4 Nf3+ 27.Ke2 Nxd2 28.Rxd2 >>> dxe3 29.fxe3 Nd5 30.Qc4 Nxe3 >>>2:42 2/11 -1.06 13031332 23...Nf3+ 24.Kf1 Nxh2+ 25.Ke1 Re6 >>> 26.Qb4 Nf3+ 27.Ke2 Nxd2 28.Qxd2 >>> Bf5 29.Ng1 dxe3 30.fxe3 Bxe3 31.Qxe3 >>> Rxe3+ 32.Kxe3 >>>3:16 2/11 -1.23 15735481 23...Re6 24.Qa3 Nf3+ 25.Kf1 Nxh2+ >>> 26.Kg1 Nf3+ 27.Kf1 Nxd2+ 28.Rxd2 >>> dxe3 29.Rd6 Bf5 30.Kg2 e2 31.Rxe6 >>> Bxe6 >>> >>>jm >> >>Nf3+ doesn't win. Best case it draws, worst case there are several lines that >>lose. >> >>A lot of programs get "confused" on this one, because the material is all wacko. >> :) > >Here is the line that CM plays: > >23...Nf3+ >24.Kf1 Nxh2+ >25.Ke1 Nf3+ >26.Ke2 Re6 >27.Qb4 Nxd2 >28.Rxd2 Nd5 (and an eval of over 2.0 for Black). > >How can White improve on the above line? > >jm That line is great. But any program that says it's 2.0 for Black is nuts. ;) Consider after 28...Nd5: Bxd4 Rc8 Bxb6 Rxb6 Kg1 Nf6 Rd1 Bf3 Rc1 Rbc6 Rxc6 Rxc6 Qb2 Ng4 And it seems to me, white is at *least* even. And IMO, slightly better. Besides, Re6 wins almost immediatly.
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