Computer Chess Club Archives


Search

Terms

Messages

Subject: Re: is there a shorter mate?

Author: John Merlino

Date: 12:22:30 12/28/03

Go up one level in this thread


On December 28, 2003 at 14:19:49, Mike Byrne wrote:

>
>
>Black(1): [d]5K1k/1R1P4/8/b7/4r3/3B4/3p4/8 w - - 0 1
>White(1): move
>end-game phase
>              time surplus   0.00  time limit 1666:39 (1666:39)/(-25)
>              depth   time  score   variation (1)
>                3     0.00   0.00   1. Bc2 Re1 2. Kf7 d1=Q 3. Bxd1 Rxd1
>                3->   0.00   0.00   1. Bc2 Re1 2. Kf7 d1=Q 3. Bxd1 Rxd1
>                4     0.02   0.00   1. Bc2 Re1 2. Kf7 d1=Q 3. Bxd1 Rxd1
>                4->   0.02   0.00   1. Bc2 Re1 2. Kf7 d1=Q 3. Bxd1 Rxd1
>                5     0.02   0.21   1. Bc2 Bd8 2. Rb8 Rc4 3. Bd1
>                5->   0.03   0.21   1. Bc2 Bd8 2. Rb8 Rc4 3. Bd1
>                6     0.03   0.00   1. Bc2 Rf4+ 2. Ke7 Rf1 3. Rb8+ Kg7
>                                    4. Ra8 Re1+ 5. Kd6 d1=Q+ 6. Bxd1 Rxd1+
>                6->   0.09   0.00   1. Bc2 Rf4+ 2. Ke7 Rf1 3. Rb8+ Kg7
>                                    4. Ra8 Re1+ 5. Kd6 d1=Q+ 6. Bxd1 Rxd1+
>                7     0.19   0.00   1. Bc2 Rf4+ 2. Ke7 Rf1 3. Rb8+ Kg7
>                                    4. Ra8 Re1+ 5. Kd6 d1=Q+ 6. Bxd1 Rxd1+
>                7->   0.44   0.00   1. Bc2 Rf4+ 2. Ke7 Rf1 3. Rb8+ Kg7
>                                    4. Ra8 Re1+ 5. Kd6 d1=Q+ 6. Bxd1 Rxd1+
>                                    (s=4)
>                8     0.53   0.00   1. Bc2 Rf4+ 2. Ke7 Rf1 3. Rb8+ Kg7
>                                    4. Ra8 Re1+ 5. Kd6 d1=Q+ 6. Bxd1 Rxd1+
>                                    7. Ke7 (s=3)
>                8->   0.86   0.00   1. Bc2 Rf4+ 2. Ke7 Rf1 3. Rb8+ Kg7
>                                    4. Ra8 Re1+ 5. Kd6 d1=Q+ 6. Bxd1 Rxd1+
>                                    7. Ke7 (s=4)
>                9     1.59   0.00   1. Bc2 Rf4+ 2. Ke7 Rf1 3. Rb8+ Kg7
>                                    4. Ra8 Re1+ 5. Kd6 d1=Q+ 6. Bxd1 Rxd1+
>                                    7. Ke7 Bb4+ 8. Ke8 (s=3)
>                9     3.09     ++   1. d8=N!!
>                9     6.80   4.35   1. d8=N Re8+ 2. Kxe8 d1=Q 3. Kf8 Bb4+
>                                    4. Rxb4 Qf3+ 5. Bf5 Qh5 6. Rb5 Qg4
>                9->   7.72   4.35   1. d8=N Re8+ 2. Kxe8 d1=Q 3. Kf8 Bb4+
>                                    4. Rxb4 Qf3+ 5. Bf5 Qh5 6. Rb5 Qg4
>               10     8.09     ++   1. d8=N!!
>               10     8.23   7.05   1. d8=N Re8+ 2. Kxe8 d1=Q 3. Kf8 Qxd3
>                                    4. Nf7+ Kh7 5. Ne5+ Kh6 6. Nxd3 Kg6
>                                    7. Ra7 Bd8 8. Ra8
>               10->  11.02   7.05   1. d8=N Re8+ 2. Kxe8 d1=Q 3. Kf8 Qxd3
>                                    4. Nf7+ Kh7 5. Ne5+ Kh6 6. Nxd3 Kg6
>                                    7. Ra7 Bd8 8. Ra8 (s=2)
>               11    12.59   7.05   1. d8=N Re8+ 2. Kxe8 d1=Q 3. Kf8 Qxd3
>                                    4. Nf7+ Kh7 5. Ne5+ Kh6 6. Nxd3 Kg6
>                                    7. Ra7 Bd8 8. Ra8 Bh4
>               11->  16.16   7.05   1. d8=N Re8+ 2. Kxe8 d1=Q 3. Kf8 Qxd3
>                                    4. Nf7+ Kh7 5. Ne5+ Kh6 6. Nxd3 Kg6
>                                    7. Ra7 Bd8 8. Ra8 Bh4 (s=2)
>               12    19.89     ++   1. d8=N!!
>               12    38.36  12.11   1. d8=N Re8+ 2. Kxe8 Bc7 3. Bc2 d1=Q
>                                    4. Bxd1 Bf4 5. Kf7 Kh7 6. Rb5 Be5 7.
>                                    Rxe5
>               12->  44.41  12.11   1. d8=N Re8+ 2. Kxe8 Bc7 3. Bc2 d1=Q
>                                    4. Bxd1 Bf4 5. Kf7 Kh7 6. Rb5 Be5 7.
>                                    Rxe5
>               13    52.77     ++   1. d8=N!!
>               13     1:16  Mat22   1. d8=N Re8+ 2. Kxe8 Kg8 3. Bc4+ Kh8
>                                    4. Kf8 d1=Q 5. Nf7+ Kh7 6. Bd3+ Qxd3
>                                    7. Ne5+ Kh6 8. Nxd3 <HT>
>               13->   1:38  Mat22   1. d8=N Re8+ 2. Kxe8 Kg8 3. Bc4+ Kh8
>                                    4. Kf8 d1=Q 5. Nf7+ Kh7 6. Bd3+ Qxd3
>                                    7. Ne5+ Kh6 8. Nxd3 <HT>
>               14     3:19  Mat20   1. d8=N Re8+ 2. Kxe8 d1=Q 3. Kf8 Qxd3
>                                    4. Nf7+ Kh7 5. Ne5+ Kh6 6. Nxd3 <EGTB>
>               14->   4:00  Mat20   1. d8=N Re8+ 2. Kxe8 d1=Q 3. Kf8 Qxd3
>                                    4. Nf7+ Kh7 5. Ne5+ Kh6 6. Nxd3 <EGTB>
>               15     4:46  Mat20   1. d8=N Re8+ 2. Kxe8 d1=Q 3. Kf8 Qxd3
>                                    4. Nf7+ Kh7 5. Ne5+ Kh6 6. Nxd3 <EGTB>
>
>source:
>
>http://www.chessbase.com/puzzle/games/puzz17b.htm

Shortest mate verified at 20 with Chessmaster 9000 and 5-man tablebases....

jm



This page took 0 seconds to execute

Last modified: Thu, 15 Apr 21 08:11:13 -0700

Current Computer Chess Club Forums at Talkchess. This site by Sean Mintz.