Author: John Merlino
Date: 12:15:46 07/21/02
Go up one level in this thread
On July 21, 2002 at 13:20:19, K. Burcham wrote: > > > [D] 8/K6N/8/2N5/1n6/6Q1/6pn/6k1 w - - 0 1 > >Gurevich, 1927 >White wins. White to begin. > >here is the line that was offered as a Solution: >1. Ne4 Nd3 2. Qf2!!! Nxf2 3. Ng3+ Kg1 >4. Ng5!! Nd3 5. Nh3# > Given the actual position above (which is apparently incorrect as per Uri's post), Chessmaster 9000 (on a PIII-733) announces a Mate in 14 in 4 seconds, and eventually brings it down to Mate in 11 after 22 seconds: Time Depth Score Positions Moves 0:00 1/3 8.21 2315 1.Qe1+ Nf1 2.Qxb4 Kh1 3.Qh4+ Nh2 4.Qe4 0:00 1/4 8.15 7931 1.Qe1+ Nf1 2.Qxb4 Kh1 3.Qh4+ Nh2 4.Qe4 Ng4 0:00 1/5 8.90 24289 1.Qe1+ Nf1 2.Ng5 Nc6+ 3.Kb6 Nd4 4.Qh4 Ne3 5.Nh3+ Kh2 6.Nf4+ Kg1 7.Nxg2 Kxg2 8.Qxd4 0:01 1/6 8.95 82780 1.Qe1+ Nf1 2.Ng5 Kh1 3.Nf3 g1=Q 4.Qh4+ Nh2 5.Nxg1 Kxg1 6.Qxb4 Nf3 7.Qf4 0:01 1/7 9.07 146289 1.Qe1+ Nf1 2.Ng5 Kh1 3.Qh4+ Nh2 4.Nf3 g1=Q 5.Nxg1 Kxg1 6.Ne4 Nd3 7.Qg3+ Kh1 8.Qxd3 Kg2 0:03 1/7 10.99 378232 1.Ne4 Nf3 2.Qxf3 Nc6+ 3.Kb6 Nb8 4.Qd1+ Kh2 5.Qd6+ Kh1 6.Nf2+ Kg1 7.Nh3+ Kh1 8.Qxb8 0:04 2/8 Mate14 545840 1.Ne4 Nf3 2.Qxf3 Nc6+ 3.Kb6 Ne5 4.Qd1+ Kh2 5.Qh5+ Kg1 6.Nhg5 Nd3 7.Nh3+ Kh2 8.Nhf2+ Kg1 9.Qd1+ Kh2 10.Ng4+ Kh3 11.Qf3+ Kh4 12.Qg3+ Kh5 13.Ngf6+ Kh6 14.Qg5# 0:11 3/9 Mate12 1557092 1.Ne4 Nc6+ 2.Kb6 Kh1 3.Nf2+ Kg1 4.Nh3+ Kh1 5.Qe1+ Nf1 6.Qf2 Kh2 7.Nf4 Ne3 8.Qh4+ Kg1 9.Nh3+ Kh2 10.N3g5+ Kg1 11.Nf3+ Kf1 12.Qe1# 0:22 4/10 Mate11 3287648 1.Ne4 Kh1 2.Nf2+ Kg1 3.Nh3+ Kh1 4.Qe1+ Nf1 5.Qf2 Kh2 6.Nf4 Ne3 7.Qh4+ Kg1 8.Nh3+ Kh2 9.N3g5+ Kg1 10.Nf3+ Kf1 11.Qe1# 0:44 5/11 Mate11 6785787 1.Ne4 Kh1 2.Nf2+ Kg1 3.Nh3+ Kh1 4.Qe1+ Nf1 5.Qf2 Kh2 6.Nf4 Ne3 7.Qh4+ Kg1 8.Nh3+ Kh2 9.N3g5+ Kg1 10.Nf3+ Kf1 11.Qe1# However, given the correct(?) position (with the Black King on h1), CM9000 does not announce a mate, which almost certainly means that this position is not a Mate in 5. Time Depth Score Positions Moves 0:00 1/3 3.66 2032 1.Ne4 Nd3 2.Qxd3 g1=Q+ 3.Kb7 0:00 1/4 3.66 3692 1.Ne4 Nd3 2.Kb7 g1=Q 3.Qxd3 0:00 1/5 3.54 9067 1.Ne4 Nd3 2.Qxd3 g1=Q+ 3.Ka6 Qa1+ 4.Kb5 Ng4 0:00 1/6 3.54 22917 1.Ne4 Nd3 2.Qxd3 g1=Q+ 3.Kb7 Qg7+ 4.Kc6 Ng4 5.Nhg5 0:01 1/7 3.79 81071 1.Ne4 Nd3 2.Qxd3 g1=Q+ 3.Kb7 Qg7+ 4.Kc6 Qf7 5.Nhg5 Qg6+ 6.Kb5 Qf5+ 7.Ka4 0:01 2/8 3.93 132280 1.Ne4 Nd3 2.Qxd3 g1=Q+ 3.Kb7 Qg7+ 4.Kc6 Qf7 5.Nhf6 Qe6+ 6.Kb5 Qe5+ 7.Nd5 Kg1 0:04 3/9 8.62 420974 1.Ne4 Nd3 2.Qf2 Ng4 3.Qh4+ Kg1 4.Qxg4 Nf2 5.Nxf2 Kxf2 6.Qf4+ Kg1 7.Qe3+ Kh2 0:08 4/10 8.84 1013982 1.Ne4 Nd3 2.Qf2 g1=Q 3.Ng3+ Qxg3 4.Qxg3 Nc5 5.Kb6 Ne6 6.Qe1+ Kg2 7.Qxe6 Nf3 8.Nf6 0:19 5/11 8.97 2335503 1.Ne4 Nd3 2.Qf2 Ng4 3.Qh4+ Kg1 4.Qxg4 Nf2 5.Nxf2 Kxf2 6.Qd4+ Kf1 7.Qd1+ Kf2 8.Ng5 Kg3 9.Qe1+ Kg4 10.Qe3 1:16 6/12 9.21 9943492 1.Ne4 g1=Q+ 2.Nf2+ Qxf2+ 3.Qxf2 Nc6+ 4.Kb6 Ne5 5.Qe1+ Kg2 6.Qe2+ Kg1 7.Qxe5 Nf1 8.Ng5 Kf2 9.Qf4+ Ke2 10.Qf3+ Ke1 11.Kc5 3:05 7/13 11.29 23990556 1.Ne4 g1=Q+ 2.Nf2+ Qxf2+ 3.Qxf2 Nc6+ 4.Kb7 Ne5 5.Qe1+ Kg2 6.Qe2+ Kh3 7.Ng5+ Kg3 8.Qxe5+ Kg4 9.Ne6 Kh3 10.Qe3+ Kg4 11.Qg1+ Kf5 12.Ng7+ Ke4 13.Qxh2 >I did not understand Deep Junior7 eval with the position,starting >from the move after Ng5. DJ7 would not post a mate. > > [D] 8/K7/8/6N1/8/6N1/5npn/6k1 b - - That's quite odd, given that it's a Mate in 1! jm
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