Author: John Merlino
Date: 08:25:09 11/29/02
Go up one level in this thread
On November 29, 2002 at 04:59:01, Rex wrote: >RebelRex(C) ver Talion(GM) on ICC. > > >Here RebelRex played 37...b3 for the loss. How long does it take your computer >to avoid this move because of the next GM's move 38.Nxg4!! > >[D]r7/2q1p3/3pPkp1/2pP1pNp/1pP2Bb1/3BN1K1/rP1R4/4R3 b - - 0 1 CM9000 on a P3-733 never considers b3, and only likes Kg7. After 20 seconds, it realizes that Nxg4 is coming next anyway, and the eval starts to drop noticeably: Time Depth Score Positions Moves 0:00 1/3 -1.80 1879 1...Kg7 2.Bb1 Ra1 3.Nf7 0:00 1/4 -1.80 5862 1...Kg7 2.Bb1 Ra1 3.Nf7 0:00 1/5 -1.77 14399 1...Kg7 2.Bb1 Ra1 3.Nf7 Qb6 0:00 1/6 -1.82 39304 1...Kg7 2.Bb1 Ra1 3.Nxg4 hxg4 4.Rh2 Rh8 5.Rxh8 Kxh8 0:01 1/7 -1.68 79005 1...Kg7 2.Bb1 Ra1 3.Rh2 Rh8 4.Nf7 Rh7 5.Ng5 0:03 1/8 -1.68 214930 1...Kg7 2.Bb1 Ra1 3.Rh2 Rh8 4.Nf7 Rh7 5.Ng5 0:06 1/9 -1.56 434985 1...Kg7 2.Bb1 Ra1 3.Rh2 Rh8 4.Nf7 Re8 5.Nxg4 fxg4 6.Rhe2 0:20 1/10 -1.37 1570566 1...Kg7 2.Nxg4 fxg4 3.Rf2 Rf8 4.Nf7 Re8 5.Bh6+ Kh7 6.Bb1 Raa8 7.Bd2 1:02 2/11 -1.13 4929522 1...Kg7 2.Nxg4 fxg4 3.Rf2 Rf8 4.Nf7 Re8 5.Rh1 Rea8 6.Bh6+ Kg8 7.Bxg6 4:13 3/12 -0.49 21283071 1...Kg7 2.Nxg4 hxg4 3.Rh1 Rh8 4.Rxh8 Kxh8 5.Rh2+ Kg7 6.Nf7 b3 7.Bh6+ Kg8 8.Bg5 f4+ 9.Bxf4 >How long does it take your computer to find the GM's move 38.Nxg4 > >[D]r7/2q1p3/3pPkp1/2pP1pNp/2P2Bb1/1p1BN1K1/rP1R4/4R3 w - - 0 1 After b3, CM9000 sees Nxg4+ after 4 seconds, a draw score after 6 seconds, and sees a positive score for White after 11 seconds: Time Depth Score Positions Moves 4:13 3/12 -0.49 21283071 1...Kg7 2.Nxg4 hxg4 3.Rh1 Rh8 4.Rxh8 Kxh8 5.Rh2+ Kg7 6.Nf7 b3 7.Bh6+ Kg8 8.Bg5 f4+ 9.Bxf4 ---- ---- ---- ---- ---- 0:00 1/3 -1.25 2346 2.Bb1 Ra1 3.Nxg4+ hxg4 4.Rdd1 0:00 1/4 -1.21 5916 2.Bb1 Ra1 3.Rd3 Qb6 4.Kf2 0:00 1/5 -1.37 21550 2.Bb1 Ra1 3.Rd3 Qb6 4.Nxg4+ hxg4 5.Rdd1 0:00 1/6 -1.30 63400 2.Bb1 Ra1 3.Nxg4+ hxg4 4.Rh2 Kg7 5.Rh7+ Kg8 6.Reh1 0:03 1/7 -1.65 254771 2.Bb1 R2a4 3.Nf7 Kg7 4.Nxg4 hxg4 5.Ne5 Ra1 0:04 1/7 -0.39 392728 2.Nxg4+ fxg4 3.Rf2 Kg7 4.Bc1 Rf8 5.Rf7+ Rxf7 6.exf7 Qd7 7.Bxg6 0:06 1/8 0.00 508777 2.Nxg4+ fxg4 3.Rf2 Kg7 4.Bd2 Ra1 5.Bc3+ Kh6 6.Nf7+ Kh7 7.Ng5+ Kh6 0:11 1/9 0.62 958399 2.Nxg4+ fxg4 3.Rf2 Kg7 4.Bd2 Kg8 5.Bxg6 h4+ 6.Kxh4 Kg7 7.Bb1 0:28 1/10 0.99 2220024 2.Nxg4+ fxg4 3.Rf2 Kg7 4.Bd2 Kg8 5.Bxg6 Kg7 6.Bxh5 Kg8 7.Bf7+ Kf8 8.Bg6+ Kg7 1:25 2/11 1.23 7244905 2.Nxg4+ fxg4 3.Rf2 Kg7 4.Bd2 Kg8 5.Bxg6 Kg7 6.Bxh5 R2a4 7.Rf7+ Kg8 8.Ne4 Rxc4 9.Bxg4 8:42 3/12 1.52 47645171 2.Nxg4+ Kg7 3.Ne5 Qa5 4.Nc6 Qc7 5.Nf3 R2a4 6.Bg5 Re8 7.Kh3 Ra2 8.Nh4 Kh7 jm
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