Author: Uri Blass
Date: 12:59:33 05/21/01
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On May 21, 2001 at 15:15:04, Ingo Bauer wrote: >On May 21, 2001 at 13:06:51, Andreas Schwartmann wrote: > >>I received an e-mail today asking me for help on GS 2930 test suite position >>#13. My chess abilities are not good enough, I am afraid, but what do you think >>about this? Here comes the mail: >> >>Andreas, >> >>I have been using the GS 2930 test suite to estimate the rating for the >>Deep Blue system. This is for use in a paper we are preparing. I >>downloaded the test suite from your web site. There are three problems >>that the system does not solve in 20 minutes. One of them in particular, >>#13, is not solved even for very deep searches. The given move is Bxg7, >>but Deep Blue Jr. gives a different move that has a somewhat higher score >>than Bxg7. The PV follows. Do you have any opinion on this? Thank you. >> >>Regards, >> >>Murray >> >>Rh5 Qc2 Qe7 Qb2 Ne5 Rc1 g4 Rf1 Kf1 Qb1 Kg2 Qe4 Kh3 Qb1 Rf5 Qf1 Kh4 Qg2 h3 >>Qa8 Rf7 +1.49 >> >>-- >> >>Any comments? >>Andreas > >(D)2r2rk1/p1q1bpp1/1p6/n2R4/8/P4N2/1B2QPPP/5RK1 w - - > >Following Kasparov Bxg7 is the winning move. Its from a Game Kasparov - Poritsch >1983. On a 845 Mhz Celeron with 256 MB Hash Deep Shreeder wants to play it after >38 min. More infos about the complete Test at: >http://mitglied.tripod.de/ChessBits/index.html >And the un the buttom line GS290. Its in German but the Test should be >understandable. > >Engine: Deep Shredder >by Stefan Meyer-Kahlen > 11.01 2:54 +0.88 1.Nd2 Bd6 2.Ne4 Bxh2+ 3.Kh1 f5 4.Ng5 Qc6 5.Qe6+ Qxe6 6.Nxe6 >Rfe8 7.Nxg7 Re2 8.Kxh2 Rxb2 9.Nxf5 (30.742.601) 176.5 > 12.01 7:22 +0.89 1.Nd2 Rcd8 2.Qg4 f6 3.Qe6+ Rf7 4.Rc1 Bc5 5.Ne4 Rxd5 6.Qxd5 >Nb7 7.Rd1 Qf4 8.Qe6 (78.040.210) 176.3 > 13.01 21:10 +0.73 1.Nd2 Rcd8 2.Qg4 f6 3.Qe6+ Rf7 4.Rc1 Bc5 5.Ne4 Rxd5 6.Qxd5 >Qd7 7.Qh5 Nb3 8.Rd1 (221.098.760) 173.9 > 13.02 37:58 +0.74++ 1.Bxg7 Kxg7 2.Ne5 Rfd8 3.Qg4+ Kf8 4.Nd7+ Rxd7 5.Rxd7 Qc4 >6.Qh5 a6 7.Qh8+ (407.172.076) 178.7 >best move: Bb2xg7 time: 53:16.567 min n/s: 178.954 CPU 96.4% nodes: >572.037.826 I read also the relevant position in a book of kasparov. I think that +0.74 is not convincing. Bxg7 does not lose material but white gets only Rook and a pawn and exposed king for bishop and knight. I am not convinced if white is winning and the position seems to be unclear to me. If Deep blue JR's move gives a clear advantage for white then it is clearly better Here is Deep Fritz's evaluation after Bxg7 Kxg7 New position 2r2r2/p1q1bpk1/1p6/n2R4/8/P4N2/4QPPP/5RK1 w - - 0 1 Analysis by Deep Fritz: 2.Qxe7-- -+ (-4.78) Depth: 1/3 00:00:00 2.Qxe7-- Qxe7 -+ (-7.31) Depth: 1/3 00:00:00 2.Rxa5! -+ (-5.75) Depth: 1/3 00:00:00 2.Rxa5! bxa5 -+ (-2.91) Depth: 1/3 00:00:00 2.Rfd1! -+ (-2.87) Depth: 1/3 00:00:00 2.Rfd1! Bxa3 -+ (-1.84) Depth: 1/3 00:00:00 2.Qe3! -+ (-1.41) Depth: 1/3 00:00:00 2.Qe3-- -+ (-1.75) Depth: 2/6 00:00:00 2.Qe3-- Rfe8 3.Qd4+ Bf6 -+ (-1.87) Depth: 2/6 00:00:00 2.Qd3! -+ (-1.84) Depth: 2/6 00:00:00 2.Qd3! Rh8 -+ (-1.72) Depth: 2/6 00:00:00 2.Qd3 Nc4 3.Rd7 -+ (-1.72) Depth: 3/10 00:00:00 1kN 2.Ne5! -+ (-1.69) Depth: 3/10 00:00:00 2kN 2.Ne5! Nc4 3.Qg4+ Kh8 4.Nxc4 -+ (-1.47) Depth: 3/10 00:00:00 2kN 2.Nd4! -+ (-1.44) Depth: 3/10 00:00:00 3kN 2.Nd4! Rh8 -+ (-1.41) Depth: 3/11 00:00:00 3kN 2.Nd4-- -+ (-1.72) Depth: 4/12 00:00:00 5kN 2.Nd4-- Rh8 3.Qg4+ Kf8 4.Rh5 -+ (-2.12) Depth: 4/12 00:00:00 6kN 2.Ne5! -+ (-2.09) Depth: 4/12 00:00:00 6kN 2.Ne5! Bd6 3.Qg4+ Kh8 4.Qh5+ Kg8 µ (-1.31) Depth: 4/17 00:00:00 12kN 2.Ne5! µ (-1.00) Depth: 5/16 00:00:00 27kN 2.Ne5! ³ (-0.69) Depth: 6/18 00:00:00 70kN 2.Ne5! ³ (-0.37) Depth: 7/20 00:00:00 197kN 2.Ne5! Bg5 3.Nd7 Qd8 4.Qe5+ Bf6 5.Qg3+ Kh6 6.Qh3+ Kg7 7.Qg4+ Kh8 = (0.16) Depth: 7/22 00:00:00 401kN 2.Ne5 Rcd8 3.Nd7 f6 4.Nxf8 Bxf8 5.Rxd8 Qxd8 6.Qg4+ Kh8 ² (0.44) Depth: 8/23 00:00:01 951kN 2.Ne5 Rcd8 3.Qg4+ Kh8 4.Nd7 f5 5.Qh5+ Kg7 6.Nxf8 Rxf8 7.Rd3 ² (0.34) Depth: 9/25 00:00:03 2136kN 2.Ne5 Rfd8 3.Qg4+ Kf8 4.Nd7+ Rxd7 5.Rxd7 Qc4 6.Qg3 Ke8 7.Rxa7 ² (0.50) Depth: 10/27 00:00:09 6378kN 2.Ne5 Rfd8 3.Qg4+ Kf8 4.Nd7+ Rxd7 5.Rxd7 Qc3 6.Rxa7 Bxa3 ² (0.66) Depth: 11/29 00:00:26 17302kN 2.Ne5 Rfd8 3.Qh5 Bf6 4.Nd7 Rxd7 5.Qg4+ Kf8 6.Rxd7 Qc4 7.Qf5 Kg7 ± (0.72) Depth: 12/33 00:01:45 68616kN 2.Ne5 Rfd8 3.Qh5 Bf6 4.Nd7 Rxd7 5.Qg4+ Kf8 6.Rxd7 Qc4 7.Qf5 Kg7 ² (0.63) Depth: 13/35 00:04:32 180478kN (Blass, Tel-Aviv 21.05.2001) The score is also only +0.63 later New position 2rr4/p1q1bpk1/1p6/n2RN3/8/P7/4QPPP/5RK1 w - - 0 1 Analysis by Deep Fritz: 3.Rxd8! -+ (-1.50) Depth: 1/7 00:00:00 3.Rxd8! Rxd8 4.Qg4+ Kf8 µ (-1.31) Depth: 1/9 00:00:00 3.Qg4+! µ (-1.28) Depth: 1/9 00:00:00 3.Qg4+! µ (-0.78) Depth: 2/11 00:00:00 3.Qg4+! Kh7 ³ (-0.44) Depth: 2/13 00:00:00 3.Qg4+! = (0.06) Depth: 3/11 00:00:00 1kN 3.Qg4+! Kf8 4.Nd7+ Rxd7 ² (0.47) Depth: 3/13 00:00:00 3kN 3.Qg4+ Kf8 4.Nd7+ Rxd7 5.Rxd7 ² (0.47) Depth: 4/17 00:00:00 4kN 3.Qg4+ Kf8 4.Nd7+ Rxd7 5.Rxd7 Qc6 ² (0.53) Depth: 5/15 00:00:00 15kN 3.Qg4+ Kf8 4.Nd7+ Rxd7 5.Rxd7 Qc4 6.Qh5 ² (0.53) Depth: 6/21 00:00:00 36kN 3.Qg4+ Kf8 4.Nd7+ Rxd7 5.Rxd7 Qc4 6.Qg3 Nc6 ² (0.44) Depth: 7/25 00:00:00 153kN 3.Qg4+ Kf8 4.Nd7+ Rxd7 5.Rxd7 Qc4 6.Qg3 Ke8 7.Rxa7 ² (0.50) Depth: 8/23 00:00:00 392kN 3.Qg4+ Kf8 4.Nd7+ Rxd7 5.Rxd7 Qc6 6.Qh3 Bf6 7.Rxa7 Nc4 ² (0.66) Depth: 9/26 00:00:01 1244kN 3.Qg4+ Kf8 4.Nd7+ Rxd7 5.Rxd7 Qc4 6.Qh3 Qh4 7.Qxh4 Bxh4 8.Rxa7 Rc2 ² (0.56) Depth: 10/29 00:00:05 4065kN 3.Qg4+ Kf8 4.Nd7+ Rxd7 5.Rxd7 Qc3 6.Rxa7 Bxa3 7.Qf5 Be7 8.Rd1 Bf6 ² (0.59) Depth: 11/33 00:00:17 12521kN 3.Qh5! ² (0.63) Depth: 11/33 00:00:27 18902kN 3.Qh5 Bf6 4.Qg4+ Kf8 5.Nd7+ Rxd7 6.Rxd7 Qc4 7.Qf5 Kg7 8.Rxa7 Rc5 ± (0.72) Depth: 12/31 00:00:46 32795kN 3.Qh5 Bf6 4.Qg4+ Kf8 5.Nd7+ Rxd7 6.Rxd7 Qc4 7.Qf5 Kg7 8.Rxa7 Rc5 ² (0.56) Depth: 13/35 00:02:03 87486kN 3.Qh5 Bf6 4.Qg4+ Kf8 5.Nd7+ Rxd7 6.Rxd7 Qc4 7.Qf5 Qe6 8.Qxe6 fxe6 ² (0.63) Depth: 14/35 00:05:05 215908kN (Blass, Tel-Aviv 21.05.2001) Uri
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