Author: John Merlino
Date: 10:48:05 04/22/04
Go up one level in this thread
On April 22, 2004 at 13:22:12, John Merlino wrote: >On April 22, 2004 at 10:34:36, José Antônio Fabiano Mendes wrote: > >> Please see ==> http://www.chesscafe.com/informant/informant.htm >> [six interesting test positions] > >Here are the positions: > Here is CM_SKR's output on an AMD 2500+: >[D]2r4k/ppq1r1b1/1n1R2Rp/8/5p1Q/1B5P/PP3PPK/8 w - - 0 1 > >1.Rdf6! No problem here.... Time Depth Score Positions Moves 0:00 1/3 0.00 3768 1.Rxg7 Rxg7 2.Qxh6+ Rh7 3.Qf6+ Rg7 4.Qh4+ Rh7 5.Qf6+ 0:00 1/4 0.00 8117 1.Rxg7 Rxg7 2.Qxh6+ Rh7 3.Qf6+ Rg7 4.Qh4+ Rh7 5.Qf6+ 0:00 1/4 0.22 20720 1.Qxf4 Nd7 2.Rxg7 Rxg7 3.Rxh6+ Rh7 0:00 1/5 -0.21 38567 1.Qxf4 Nd7 2.Rxg7 Rxg7 3.Rxh6+ Rh7 4.Rd6 Re8 0:00 1/5 0.03 67266 1.Rxh6+ Bxh6 2.Qxh6+ Rh7 3.Qf6+ Rg7 4.Qxf4 Qe7 5.g3 Nd7 6.Rh6+ Rh7 0:00 1/5 1.67 101427 1.Rdf6 Nc4 2.Rxg7 Rxg7 3.Rxh6+ Rh7 4.Qf6+ Qg7 5.Rxh7+ Kxh7 6.Qf5+ Kh6 7.Qxc8 Nxb2 0:00 1/6 2.03 164364 1.Rdf6 Nc4 2.Rxg7 Rxg7 3.Rxh6+ Rh7 4.Qf6+ Qg7 5.Rxh7+ Kxh7 6.Qf5+ Kh6 7.Qe6+ Kh7 8.Qxc8 Nxb2 0:02 1/7 3.46 610248 1.Rdf6 f3+ 2.g3 Qc1 3.Rxh6+ Bxh6 4.Rxh6+ Qxh6 5.Qxh6+ Rh7 6.Qf6+ Rg7 7.Qxf3 Nc4 8.Qd5 Nb6 9.Qh5+ Rh7 10.Qe5+ Rg7 0:03 1/8 3.50 1111416 1.Rdf6 f3+ 2.g3 Qc1 3.Rxh6+ Bxh6 4.Rxh6+ Qxh6 5.Qxh6+ Rh7 6.Qf6+ Rg7 7.Qxf3 Rd8 8.Qh5+ Rh7 9.Qe5+ Rg7 10.f4 Nd7 11.Qh5+ Rh7 12.Qg5 0:08 1/9 3.66 2768033 1.Rdf6 f3+ 2.g3 Qc1 3.Rxh6+ Bxh6 4.Rxh6+ Qxh6 5.Qxh6+ Rh7 6.Qf6+ Rg7 7.Qxf3 Rd8 8.Qh5+ Rh7 9.Qe5+ Rg7 10.Qa5 Ra8 11.Qh5+ Rh7 12.Qe5+ Rg7 13.f4 Rd8 14.Qf6 0:27 1/10 4.45 9304079 1.Rdf6 f3+ 2.g3 Qc1 3.Rf4 Qxf4 4.Qxf4 Nd7 5.Qd6 Rce8 6.Ba4 Be5 7.Rxh6+ Kg7 8.Qg6+ Kf8 9.Rh7 > >[D]6k1/p3Bpp1/2R1b1q1/7p/4n1P1/3pP3/P4PBP/3R2K1 b - - 0 1 > >1...f6!! Tougher to find, and over two minutes before the score favors the side to move.... Time Depth Score Positions Moves 0:00 1/3 1.93 1184 1...d2 2.f3 Nf6 3.Rxd2 hxg4 0:00 1/3 1.66 1534 1...Nf6 2.gxh5 Nxh5 3.Rc7 Bxa2 4.Rxa7 0:00 1/4 1.62 2800 1...Nf6 2.gxh5 Nxh5 3.Rd6 0:00 1/4 1.53 6387 1...Kh7 2.f3 Nf6 3.gxh5 0:00 1/4 1.19 7376 1...d2 2.f3 Qh6 3.fxe4 Qxe3+ 4.Kh1 Bxg4 0:00 1/5 1.81 11337 1...d2 2.f3 Qh6 3.g5 Nxg5 4.Rxd2 Nxf3+ 5.Bxf3 Qxe3+ 6.Rf2 0:00 1/5 1.76 14972 1...Kh7 2.f3 Nf6 3.Bf1 Bf5 0:00 1/5 1.49 23575 1...hxg4 2.Rxd3 Qf5 3.Rd8+ Kh7 4.Rc2 Ng5 5.Rc5 Qb1+ 6.Bf1 0:00 1/6 1.11 44314 1...hxg4 2.Rxd3 Qf5 3.Rd8+ Kh7 4.Rc2 Ng5 5.Rb2 Nf3+ 6.Kh1 Bc4 0:00 1/7 0.96 114337 1...hxg4 2.Rxd3 Qf5 3.Rd8+ Kh7 4.Rc2 Ng5 5.Rb2 Bxa2 6.e4 Qe5 0:00 1/8 0.94 231802 1...hxg4 2.Rxd3 Qf5 3.Bh4 g5 4.Rd4 Qa5 5.Bxe4 Qe1+ 6.Kg2 gxh4 7.Rd8+ Kg7 0:01 1/8 0.80 346236 1...d2 2.f3 Ng5 3.Rxd2 Qb1+ 4.Kf2 Qb7 5.f4 Qxe7 6.fxg5 Qxg5 0:02 1/9 0.80 641511 1...d2 2.f3 Ng5 3.Rxd2 Qb1+ 4.Kf2 Qb7 5.f4 Qxe7 6.fxg5 Qxg5 0:03 1/9 0.72 961746 1...hxg4 2.Rxd3 Qf5 3.Rc2 Ng5 4.Rd8+ Kh7 5.Rdd2 Nf3+ 6.Bxf3 Qxf3 7.Rc5 f6 8.Rc7 0:08 1/10 0.71 2124126 1...hxg4 2.Rxd3 Qf5 3.Rc2 Ng5 4.Rdd2 Nf3+ 5.Bxf3 gxf3 6.Kh1 Bd5 7.Bc5 Qh3 0:17 1/10 0.41 4477811 1...f6 2.Rxd3 Bxg4 3.Rd8+ Kh7 4.f4 Bf3 5.Rc2 Nc3 6.Rdd2 Bxg2 7.Rxg2 Qd3 0:42 1/11 0.00 11199674 1...f6 2.Rxd3 Bxg4 3.Rd8+ Kh7 4.f4 Ng5 5.fxg5 Qb1+ 6.Kf2 Qb2+ 7.Kg1 Qb1+ 2:28 1/12 -0.42 39691406 1...f6 2.gxh5 Qxh5 3.Rxd3 Qe2 4.Bxe4 Bh3 5.Bd5+ Kh7 6.Rc1 Qxd3 7.Bc6 Qd2 8.Ba3 Qxa2 9.Bb4 Qe2 10.Be4+ Kh6 > >[D]5kn1/2q2r2/1p1pQP2/p1pPp1R1/b1P1B1P1/2P2P2/8/6K1 w - - 0 1 > >1.Bh7! Just a few seconds.... Time Depth Score Positions Moves 0:00 1/3 -3.79 1435 1.Rg6 Bd7 2.Rxg8+ Kxg8 3.Bh7+ Kf8 0:00 1/3 -3.09 2016 1.Kg2 Nxf6 2.Bg6 0:00 1/3 -1.67 4001 1.Bh7 Nh6 2.Bg6 Bd7 0:00 1/4 -1.88 8892 1.Bh7 Nh6 2.Rg7 Qd7 3.Qxd7 Bxd7 0:00 1/5 -1.88 24296 1.Bh7 Nh6 2.Rg7 Qd7 3.Qxd7 Bxd7 0:00 1/5 -1.65 30304 1.Rxg8+ Kxg8 2.Bg6 Bb3 3.Bxf7+ Qxf7 4.Qxd6 Bxc4 5.Qb8+ Kh7 6.Qxb6 Bxd5 7.Qxa5 0:00 1/6 -1.89 52947 1.Rxg8+ Kxg8 2.Bg6 Bb3 3.Qe8+ Rf8 4.Qe7 Qxe7 5.fxe7 Rc8 6.e8=Q+ Rxe8 7.Bxe8 Bxc4 0:00 1/6 -1.78 63556 1.Bh7 Nh6 2.Rg7 Qd7 3.Rxf7+ Nxf7 4.Kf2 Qxe6 5.dxe6 0:00 1/7 -2.00 119145 1.Bh7 Nh6 2.Rg7 Qd7 3.Rxf7+ Nxf7 4.Kg2 Qxe6 5.dxe6 Ng5 6.Bf5 0:00 1/7 -0.68 148595 1.Rxg8+ Kxg8 2.Bg6 Bb3 3.Qe8+ Rf8 4.Qe6+ Kh8 5.g5 Bxc4 6.f7 Rxf7 7.Bxf7 0:00 1/8 -0.68 226105 1.Rxg8+ Kxg8 2.Bg6 Qd7 3.Bxf7+ Qxf7 4.Qxd6 Bb3 5.Qxb6 Bxc4 6.Qb8+ Kh7 0:01 1/9 -0.63 381091 1.Rxg8+ Kxg8 2.Bg6 Qd7 3.Bxf7+ Qxf7 4.Qxd6 Bb3 5.Qb8+ Qf8 6.Qxe5 Bxc4 7.Qg5+ Kf7 8.Qf5 0:02 1/10 -0.70 764000 1.Rxg8+ Kxg8 2.Bg6 Qd7 3.Bxf7+ Qxf7 4.Qxd6 Bb3 5.Qb8+ Qf8 6.Qxb6 Bxc4 7.Qe6+ Qf7 8.Qc8+ Kh7 0:03 1/10 0.44 1058070 1.Bh7 Nh6 2.Bg6 Bd7 3.Bxf7 Bxe6 4.dxe6 a4 5.Rg7 Nxf7 6.e7+ Qxe7 7.fxe7+ Kxe7 8.Kf2 a3 0:07 1/11 1.06 2420562 1.Bh7 Nxf6 2.Bg6 Be8 3.Bxf7 Qxf7 4.Qxd6+ Qe7 5.Qxb6 Kf7 6.d6 Nd7 7.dxe7 Nxb6 8.Rxe5 Nxc4 9.Rxc5 0:13 1/12 1.26 3951492 1.Bh7 Nxf6 2.Bg6 Be8 3.Bxf7 Qxf7 4.Qxd6+ Qe7 5.Qxb6 a4 6.d6 Qe6 7.Qxc5 Nd7 8.Qc7 a3 0:25 2/13 1.43 7933168 1.Bh7 Nxf6 2.Bg6 e4 3.Rf5 Qe7 4.Qxf7+ Qxf7 5.Bxf7 Kxf7 6.g5 exf3 7.Rxf3 Bb3 8.Rxf6+ Ke7 9.Rf4 a4 10.Re4+ Kf7 11.Re6 1:11 3/14 1.23 23225932 1.Bh7 Nxf6 2.Bg6 Be8 3.Bxf7 Qxf7 4.Qxd6+ Qe7 5.Qxb6 a4 6.d6 Qe6 7.Rf5 Kg7 8.Qxc5 Nd7 9.Qc7 Bg6 > >[D]2rr2k1/pp1bQp2/1q1p2pB/7n/3bP2P/2NB1P2/PPP5/2KR2R1 w - - 0 1 > >1.Bc4! Thirteen seconds to find, but almost four minutes to give a good score: Time Depth Score Positions Moves 0:00 1/3 -2.22 2589 1.Rg2 Bf6 2.Rxg6+ fxg6 0:00 1/3 -0.46 8376 1.Nd5 Qxb2+ 2.Kd2 Qxa2 3.Be3 Qa5+ 4.Ke2 0:00 1/4 -0.92 19554 1.Nd5 Qxb2+ 2.Kd2 Qxa2 3.Be3 Qa5+ 4.c3 Bxc3+ 5.Ke2 0:00 1/4 -0.65 25474 1.Qg5 Re8 2.Rge1 Bxc3 3.bxc3 Rxc3 0:00 1/5 -0.64 57946 1.Qg5 Re8 2.Rg2 Rxc3 3.Qxh5 Rc5 0:00 1/6 -0.64 131721 1.Qg5 Re8 2.Rg2 Rxc3 3.Qxh5 Rc5 0:01 1/6 -0.56 270734 1.e5 dxe5 2.Rge1 Rxc3 3.bxc3 Bxc3 4.Bb5 Bxe1 5.Rxd7 Rxd7 6.Bxd7 0:02 1/7 -0.67 589619 1.e5 dxe5 2.Rge1 Be6 3.Nb5 Bc5 4.Qg5 0:07 1/8 -0.75 1659988 1.e5 dxe5 2.Rg2 Bh3 3.Re2 Rd7 4.Qa3 Bxc3 5.bxc3 0:09 1/8 -0.68 2334945 1.Qg5 Re8 2.a4 Re5 3.Qg2 Ra5 4.Bd2 Bxg1 5.Rxg1 Bxa4 0:13 1/8 0.40 3337143 1.Bc4 d5 2.Bxd5 Bxg1 3.Bxf7+ Kh8 4.Rd6 Be3+ 5.Kb1 Qxd6 6.Qxd6 Bxh6 7.Qxg6 0:17 1/9 0.40 4272361 1.Bc4 d5 2.Bxd5 Bxg1 3.Bxf7+ Kh8 4.Rd6 Be3+ 5.Kb1 Qxd6 6.Qxd6 Bxh6 7.Qxg6 0:29 1/10 0.27 7713107 1.Bc4 Rxc4 2.Rxd4 Rxd4 3.Be3 Re8 4.Qxd7 Nf6 5.Qf5 d5 6.Bxd4 Qxd4 0:55 1/11 0.27 14848786 1.Bc4 Rxc4 2.Rxd4 Rxd4 3.Be3 Re8 4.Qxd7 Nf6 5.Qf5 d5 6.Bxd4 Qxd4 3:43 1/12 0.86 61791615 1.Bc4 d5 2.Bb3 Bf6 3.Nxd5 Bxe7 4.Nxb6 axb6 5.Rxg6+ Kh7 6.Bxf7 Ba4 7.Rxd8 Rxc2+ 8.Kb1 Bxd8 9.Be3 > >[D]r2r2k1/pb2b3/1q2pn1B/7P/1p6/3B4/PP2QPP1/2R1R1K1 w - - 0 1 > >1.Rc7! No problem. Time Depth Score Positions Moves 0:00 1/3 -1.22 2992 1.Qe5 Qxf2+ 2.Kxf2 Ng4+ 3.Kg1 Nxe5 4.Rxe5 Rxd3 5.Rxe6 0:00 1/3 0.36 3940 1.Bf5 Bd5 2.b3 Kh8 0:00 1/3 0.46 4780 1.Qxe6+ Qxe6 2.Rxe6 Rd7 3.Bg5 Bf8 0:00 1/3 0.50 6262 1.Rc4 Rd5 2.Qxe6+ Qxe6 3.Rxe6 Rxh5 4.Rxe7 Rxh6 0:00 1/4 0.54 11983 1.Rc4 Rd5 2.Qxe6+ Qxe6 3.Rxe6 Rd7 0:00 1/4 0.68 13788 1.Qxe6+ Qxe6 2.Rxe6 Bf8 3.Bxf8 Rxd3 4.Bxb4 Nxh5 0:00 1/4 0.70 27531 1.Bf5 Bd5 2.Qe5 Nxh5 0:00 1/5 0.36 42366 1.Bf5 Bd5 2.Qd3 exf5 3.Rxe7 Nxh5 0:00 1/5 0.50 58531 1.Rc4 Kh8 2.Qxe6 Qxe6 3.Rxe6 Rd7 4.Bg5 Rf8 0:00 1/5 0.68 67025 1.Qxe6+ Qxe6 2.Rxe6 Bf8 3.Bxf8 Rxd3 4.Bxb4 Nxh5 0:00 1/6 0.75 105773 1.Qxe6+ Qxe6 2.Rxe6 Rac8 3.Rxc8 Bxc8 4.Rxe7 Rxd3 0:00 1/6 1.09 179766 1.Rc7 Bf8 2.Bh7+ Kh8 3.Qe5 Qd4 4.Bxf8 Qxe5 5.Rxe5 Rxf8 6.Rxb7 Nxh7 7.Rxe6 0:01 1/7 1.09 272578 1.Rc7 Bf8 2.Bh7+ Kh8 3.Qe5 Qd4 4.Bxf8 Qxe5 5.Rxe5 Rxf8 6.Rxb7 Nxh7 7.Rxe6 0:02 1/8 0.82 624815 1.Rc7 Bf8 2.Bf4 Rac8 3.Rec1 Bg7 4.Bg6 Rxc7 5.Rxc7 0:10 1/9 1.51 2432705 1.Rc7 Bf8 2.Bh7+ Kh8 3.Qe5 Qd4 4.Bf4 Bg7 5.Rxb7 Kxh7 6.Qg5 Nd5 0:19 1/10 1.43 4805278 1.Rc7 Bf8 2.Bh7+ Kh8 3.Qe5 Qxc7 4.Qxc7 Bxh6 5.Qxb7 Nxh7 6.Rxe6 Bg7 7.Re7 0:47 1/11 1.45 12631503 1.Rc7 Bf8 2.Bh7+ Kh8 3.Qe5 Qxc7 4.Qxc7 Bxh6 5.Qxb7 Nxh7 6.Rxe6 Bf8 7.Rg6 Rd1+ 8.Kh2 > >[D]2r1r1k1/pb1p1p2/3P1qpp/8/3N4/2P3QP/P2KBPPn/R5R1 b - - 0 1 > >1...Nf3!! Ok. This one was tough. Just under five minutes, but the score is only a draw.... The hard part is seeing all the way down to 6...Re5+ in the main line (which The King sees up to that crucial point). Time Depth Score Positions Moves 0:00 1/3 1.41 3709 1...Bd5 2.f4 Qxd6 3.Qxh2 0:00 1/3 1.22 10981 1...Re4 2.Rad1 Rxd4+ 3.cxd4 Qxd4+ 4.Ke1 0:00 1/4 0.98 23081 1...Re4 2.Rgd1 Bd5 3.Kc1 0:00 1/5 1.17 62695 1...Re4 2.Rgd1 Bd5 3.Ke1 Qe5 4.Qxe5 Rxe5 0:00 1/6 1.17 174449 1...Re4 2.Rgd1 Bd5 3.Ke1 Qe5 4.Qxe5 Rxe5 0:04 1/7 0.83 1165109 1...Re4 2.Rgc1 Rxd4+ 3.cxd4 Qxd4+ 4.Qd3 Qf4+ 5.Kd1 Rxc1+ 6.Rxc1 Qxf2 7.Rc7 Bxg2 8.Rxd7 0:09 1/8 0.74 2650006 1...Re4 2.Rac1 Rxc3 3.Rxc3 Qxd4+ 4.Bd3 Rf4 5.Ke2 Qe5+ 6.Qe3 Rxf2+ 7.Kxf2 Qxc3 0:24 1/9 0.68 6774155 1...Re4 2.Rac1 Rxc3 3.Rxc3 Qxd4+ 4.Bd3 Ba6 5.Rh1 Bxd3 6.Rc8+ Kh7 7.Qxd3 Qxf2+ 8.Kd1 1:11 1/10 0.57 20756523 1...Re4 2.Rgd1 Rxd4+ 3.cxd4 Bxg2 4.Qe3 Qxd6 5.a3 Qd5 6.Rac1 Qa5+ 7.Rc3 Rxc3 8.Qxc3 2:35 1/11 0.55 46200346 1...Re4 2.Rgd1 Rce8 3.Rab1 Rxd4+ 4.cxd4 Qxd4+ 5.Ke1 Qc4 6.Rd2 Nf3+ 7.gxf3 Ba6 8.Kf1 Rxe2 9.Rxe2 Qxe2+ 10.Kg1 Qxa2 11.Re1 4:57 1/11 0.00 90172733 1...Nf3+ 2.gxf3 Rxc3 3.Kxc3 Rc8+ 4.Kd3 Ba6+ 5.Ke4 Re8+ 6.Kd5 Bb7+ 7.Kc4 Ba6+ 8.Kd5 5:34 1/12 0.00 102142715 1...Nf3+ 2.gxf3 Rxc3 3.Kxc3 Rc8+ 4.Kd3 Ba6+ 5.Ke4 Re8+ 6.Kd5 Bb7+ 7.Kc4 Ba6+ 8.Kd5 jm
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