Computer Chess Club Archives


Search

Terms

Messages

Subject: Re: This Endgame Problem was Posted in CTF, The Wrong Side:)

Author: Mike Byrne

Date: 08:25:54 04/02/05

Go up one level in this thread


On April 01, 2005 at 16:29:27, Terry McCracken wrote:

>[D]8/8/3P3P/5r2/2P5/2P4k/8/6K1 w
>
>Now this poster says White to play wins, I say White to play draws.
>He hasn't demonstrated the win, yet. I gave the following as the main drawing
>line, which he says is wrong.
>
>1.d7..Rf8 2.c5..Kg3 3.c6..Ra8! 4.Kf1..Kf3!=
>
>What do you say?

I think you know this already  ---

Black(1): 8/8/3P3P/5r2/2P5/2P4k/8/6K1 w
White(1): g
crafty is behind  1.5 on time, reducing by 1/3.
              time surplus   0.00  time limit 100:00 (100:00)
              depth   time  score   variation (1)
                8     0.33     +1   1. d7!!
                8     0.36   2.84   1. d7 Rf8 2. c5 Kg3 3. c6 Ra8 4. Kf1
                                    Kf3 5. c4
                8->   0.39   2.84   1. d7 Rf8 2. c5 Kg3 3. c6 Ra8 4. Kf1
                                    Kf3 5. c4
                9     0.47     -1   1. d7
                9     0.63   2.20   1. d7 Rf8 2. c5 Kg3 3. c6 Ra8 4. Kf1
                                    Kf3 5. Kg1 Rd8
                9->   0.92   2.20   1. d7 Rf8 2. c5 Kg3 3. c6 Ra8 4. Kf1
                                    Kf3 5. Kg1 Rd8 (s=2)
               10     0.97     +1   1. d7!!
               10     1.02   2.74   1. d7 Rf8 2. c5 Kg3 3. c6 Ra8 4. Kf1
                                    Kf3 5. Ke1 Ke3 6. c4
               10->   1.14   2.74   1. d7 Rf8 2. c5 Kg3 3. c6 Ra8 4. Kf1
                                    Kf3 5. Ke1 Ke3 6. c4
               11     1.24     -1   1. d7
               11     1.89   2.08   1. d7 Rf8 2. c5 Kg3 3. c6 Ra8 4. Kf1
                                    Kf3 5. Ke1 Ke3 6. Kf1 Rd8
               11->   4.67   2.08   1. d7 Rf8 2. c5 Kg3 3. c6 Ra8 4. Kf1
                                    Kf3 5. Ke1 Ke3 6. Kf1 Rd8 (s=3)
               12     4.92   2.16   1. d7 Rf8 2. c5 Kg3 3. c6 Ra8 4. Kf1
                                    Kf3 5. Ke1 Ke3 6. Kd1 Kd3 7. c4 Kxc4
                                    (s=2)
               12     7.56   2.24   1. c5 Kg3 2. h7 Rf8 3. c6 Ra8 4. Kf1
                                    Kf3 5. Ke1 Ke3 6. Kd1 Kd3 7. c4 Kxc4
               12->   7.64   2.24   1. c5 Kg3 2. h7 Rf8 3. c6 Ra8 4. Kf1
                                    Kf3 5. Ke1 Ke3 6. Kd1 Kd3 7. c4 Kxc4
               13    12.45   2.22   1. c5 Kg3 2. h7 Rf8 3. c6 Ra8 4. Kf1
                                    Kf3 5. Ke1 Ke3 6. Kd1 Kd3 7. Kc1 Kxc3
               13->  12.86   2.22   1. c5 Kg3 2. h7 Rf8 3. c6 Ra8 4. Kf1
                                    Kf3 5. Ke1 Ke3 6. Kd1 Kd3 7. Kc1 Kxc3
               14    14.11   2.14   1. c5 Kg3 2. h7 Rf8 3. c6 Ra8 4. Kf1
                                    Kf3 5. Ke1 Ke3 6. Kd1 Kd3 7. Kc1 Rh8
                                    8. c7 Kxc3
               14    15.89   2.16   1. d7 Rf8 2. c5 Kg3 3. c6 Ra8 4. Kf1
                                    Kf3 5. Ke1 Ke3 6. Kd1 Kd3 7. Kc1 Kxc3
                                    8. Kd1
               14->  15.89   2.16   1. d7 Rf8 2. c5 Kg3 3. c6 Ra8 4. Kf1
                                    Kf3 5. Ke1 Ke3 6. Kd1 Kd3 7. Kc1 Kxc3
                                    8. Kd1 (s=2)
               15    16.38     -1   1. d7
               15    20.16   0.01   1. d7 Rf8 2. c5 Kg3 3. c6 Ra8 4. Kf1
                                    Kf3 5. Ke1 Ke3 6. Kd1 Kd3 7. Kc1 Kxc3
                                    <EGTB>
               15    29.94     +1   1. c5!!
               15    31.41   2.42   1. c5 Kg3 2. h7 Rf8 3. c6 Ra8 4. Kf1
                                    Kf3 5. Ke1 Ke3 6. Kd1 Kd3 7. Kc1 Ra1+
                                    8. Kb2 Ra8 9. d7 Rb8+ 10. Ka3 Kxc3
               15->  31.44   2.42   1. c5 Kg3 2. h7 Rf8 3. c6 Ra8 4. Kf1
                                    Kf3 5. Ke1 Ke3 6. Kd1 Kd3 7. Kc1 Ra1+
                                    8. Kb2 Ra8 9. d7 Rb8+ 10. Ka3 Kxc3
                                    (s=2)
               16    34.02   2.42   1. c5 Kg3 2. h7 Rf8 3. c6 Ra8 4. Kf1
                                    Kf3 5. Ke1 Ke3 6. Kd1 Kd3 7. Kc1 Rf8
                                    8. Kb2 Rh8 9. d7 Rb8+ 10. Ka3 Kxc3
                                    <HT>
               16->  34.20   2.42   1. c5 Kg3 2. h7 Rf8 3. c6 Ra8 4. Kf1
                                    Kf3 5. Ke1 Ke3 6. Kd1 Kd3 7. Kc1 Rf8
                                    8. Kb2 Rh8 9. d7 Rb8+ 10. Ka3 Kxc3
                                    <HT>
               17    56.84     +1   1. c5!!
               17     1:01     +3   1. c5!!
               17     1:08   4.33   1. c5 Kg3 2. h7 Rf8 3. c6 Ra8 4. Kf1
                                    Kf3 5. Ke1 Ke3 6. Kd1 Kd3 7. Kc1 Rf8
                                    8. d7 Ke3 9. c7 Rf1+ 10. Kc2 Rf2+ 11.
                                    Kb3
               17->   1:09   4.33   1. c5 Kg3 2. h7 Rf8 3. c6 Ra8 4. Kf1
                                    Kf3 5. Ke1 Ke3 6. Kd1 Kd3 7. Kc1 Rf8
                                    8. d7 Ke3 9. c7 Rf1+ 10. Kc2 Rf2+ 11.
                                    Kb3
               18     1:15     +1   1. c5!!
               18     1:22     +3   1. c5!!
               18     1:41   5.78   1. c5 Kg3 2. h7 Rf8 3. c6 Ra8 4. Kf1
                                    Kf3 5. Ke1 Ke3 6. Kd1 Kd3 7. Kc1 Kc4
                                    8. c7 Rc8 9. d7 Rxc7 10. d8=Q Rxh7
               18->   1:41   5.78   1. c5 Kg3 2. h7 Rf8 3. c6 Ra8 4. Kf1
                                    Kf3 5. Ke1 Ke3 6. Kd1 Kd3 7. Kc1 Kc4
                                    8. c7 Rc8 9. d7 Rxc7 10. d8=Q Rxh7
               19     2:09     +1   1. c5!!
               19     2:47     +3   1. c5!!
               19     3:50     +M   1. c5!!
               19    12:23  11.53   1. c5 Kg3 2. h7 Rf8 3. c6 Ra8 4. Kf1
                                    Kf3 5. Ke1 Ke3 6. Kd1 Ke4 7. c7 Ra1+
                                    8. Kc2 Ra2+ 9. Kb3 Rh2 10. c8=Q Rxh7
                                    11. d7 Rxd7 12. Qxd7
               19->  12:25  11.53   1. c5 Kg3 2. h7 Rf8 3. c6 Ra8 4. Kf1
                                    Kf3 5. Ke1 Ke3 6. Kd1 Ke4 7. c7 Ra1+
                                    8. Kc2 Ra2+ 9. Kb3 Rh2 10. c8=Q Rxh7
                                    11. d7 Rxd7 12. Qxd7
?              20    12:30    1/4*  1. c5
White(1): ?
              time=12:34  cpu=180%  mat=-1  n=2837525396  fh=89%  nps=3.76M
              ext-> chk=367309694 cap=36049 pp=22095971 1rep=13496613 mate=58775
4
              predicted=0  nodes=2837525396  evals=1140662296  50move=0
              endgame tablebase-> probes=3972523  hits=57929
              SMP->  split=4905  stop=446  data=10/64  cpu=22:40  elap=12:34

White(1): c5
              time used:  12:34
Black(1):



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.