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Subject: mate -in -9

Author: Mike Byrne

Date: 17:00:44 08/24/03

 afew years ago this probelm was considered non-trivial mate-in-9 ..I believe
most program will save this rapidly ...

Crafty v19.4 (2 cpus)

White(1): kra fischer (using the new "fischer"  personality)
  queen value..........................900
  rook value...........................500
  bishop value.........................300
  knight value.........................300
  pawn value...........................100




White(1): [d]3Q4/5q1k/4ppp1/2Kp1N1B/RR6/3P1r2/4nP1b/3b4 w - -
White(1): st 99999
search time set to 99999.00.
White(1): go
              clearing hash tables
              time surplus   0.00  time limit 1666:39 (1666:39) [easy move]
              depth   time  score   variation (1)
starting thread 1
                1     0.00   0.04   1. Bxf3 gxf5
                1->   0.00   0.04   1. Bxf3 gxf5
                2     0.00   0.04   1. Bxf3 gxf5
                2->   0.01   0.04   1. Bxf3 gxf5
                3     0.01     ++   1. Bxf3!!
                3     0.01   3.41   1. Bxf3 g5 2. Qe7
                3->   0.03   3.41   1. Bxf3 g5 2. Qe7
                4     0.03     ++   1. Bxf3!!
                4     0.03   4.45   1. Bxf3 g5 2. Qe7 Qxe7+ 3. Nxe7 Be5
                4->   0.04   4.45   1. Bxf3 g5 2. Qe7 Qxe7+ 3. Nxe7 Be5
                                    (s=3)
                5     0.06   4.53   1. Bxf3 d4 2. Qe7 Qxe7+ 3. Nxe7 Bxa4
                                    4. Rxa4 (s=2)
                5->   0.11   4.53   1. Bxf3 d4 2. Qe7 Qxe7+ 3. Nxe7 Bxa4
                                    4. Rxa4 (s=4)
                6     0.12     ++   1. Bxf3!!
                6     0.14   5.04   1. Bxf3 d4 2. Qe7 Qxe7+ 3. Nxe7 Bxa4
                                    4. Bxe2 Bc2 5. Kxd4 (s=3)
                6->   0.29   5.04   1. Bxf3 d4 2. Qe7 Qxe7+ 3. Nxe7 Bxa4
                                    4. Bxe2 Bc2 5. Kxd4 (s=8)
                7     0.40     ++   1. Bxf3!!
                7     0.54   6.06   1. Bxf3 Nf4 2. Rxf4 Bxf4 3. Bxd1 e5
                                    4. Nd6 (s=7)
                7     1.06  Mat09   1. Rb7 Qxb7 2. Bxg6+ Kxg6 3. Qg8+ Kxf5
                                    4. Qg4+ Ke5 5. Qh5+ Rf5 6. f4+ Bxf4
                                    7. Qxe2+ Bxe2 8. Re4+ dxe4 9. d4# (s=5)
                7->   1.20  Mat09   1. Rb7 Qxb7 2. Bxg6+ Kxg6 3. Qg8+ Kxf5
                                    4. Qg4+ Ke5 5. Qh5+ Rf5 6. f4+ Bxf4
                                    7. Qxe2+ Bxe2 8. Re4+ dxe4 9. d4# (s=3)
                8     1.42  Mat09   1. Rb7 Qxb7 2. Bxg6+ Kxg6 3. Qg8+ Kxf5
                                    4. Qg4+ Ke5 5. Qh5+ Rf5 6. f4+ Bxf4
                                    7. Qxe2+ Bxe2 8. Re4+ dxe4 9. d4# (s=2)
                8->   7.50  Mat09   1. Rb7 Qxb7 2. Bxg6+ Kxg6 3. Qg8+ Kxf5
                                    4. Qg4+ Ke5 5. Qh5+ Rf5 6. f4+ Bxf4
                                    7. Qxe2+ Bxe2 8. Re4+ dxe4 9. d4# (s=5)
                9     8.21  Mat09   1. Rb7 Qxb7 2. Bxg6+ Kxg6 3. Qg8+ Kxf5
                                    4. Qg4+ Ke5 5. Qh5+ Rf5 6. f4+ Bxf4
                                    7. Qxe2+ Bxe2 8. Re4+ dxe4 9. d4# (s=4)
                9->   9.90  Mat09   1. Rb7 Qxb7 2. Bxg6+ Kxg6 3. Qg8+ Kxf5
                                    4. Qg4+ Ke5 5. Qh5+ Rf5 6. f4+ Bxf4
                                    7. Qxe2+ Bxe2 8. Re4+ dxe4 9. d4# (s=3)
               10    11.78  Mat09   1. Rb7 Qxb7 2. Bxg6+ Kxg6 3. Qg8+ Kxf5
                                    4. Qg4+ Ke5 5. Qh5+ Rf5 6. f4+ Bxf4
                                    7. Qxe2+ Bxe2 8. Re4+ dxe4 9. d4# (s=2)
?              10    11.78   2/50*  1. Bxf3
White(1): ?
              time=14.12  cpu=175%  mat=0  n=17988031  fh=96%  nps=1273k
              ext-> chk=1362213 cap=17833 pp=57280 1rep=182010 mate=13687
              predicted=0  nodes=17988031  evals=127506
              endgame tablebase-> probes=0  hits=0
              SMP->  split=632  stop=52  data=8/64  cpu=24.84  elap=14.12

mate in 9 moves.


White(1): Rb7
              time used:  14.12
Black(1):

Re: mate -in -9 Heiner Marxen 09:48:24 08/25/03
- Re: mate -in -9 Mike Byrne 10:51:32 08/25/03
Re: mate -in -9 leonid 05:04:04 08/25/03
- Re: mate -in -9 (to Leonid) F. Huber 09:47:31 08/25/03
  - Re: mate -in -9 (to Leonid) leonid 11:21:03 08/25/03
    - Re: mate -in -9 (to Leonid) F. Huber 12:40:40 08/25/03
      - Re: to Leonid - problem found F. Huber 14:57:54 08/25/03
        
        Re: to Leonid - problem found leonid 15:46:23 08/25/03
      - Re: mate -in -9 (to Leonid) leonid 14:53:28 08/25/03
        
        Re: mate -in -9 (to Leonid) F. Huber 15:02:57 08/25/03
- Mate slightly harder leonid 06:49:46 08/25/03
  - Re: Mate slightly harder Mike Byrne 14:33:49 08/25/03
  - Re: Mate slightly harder Vincent Lejeune 10:29:53 08/25/03
  - Re: Mate slightly harder Dan Andersson 10:29:16 08/25/03
  - Re: Mate slightly harder Tim Foden 10:10:40 08/25/03
    - Re: Mate slightly harder leonid 11:33:47 08/25/03
  - Re: Mate slightly harder Manfred Rosenboom 10:07:45 08/25/03
  - Re: Mate slightly harder Tord Romstad 09:16:45 08/25/03
  - Re: Mate slightly harder Uri Blass 08:57:09 08/25/03
Re: mate -in -9 Tord Romstad 02:44:23 08/25/03
Re: mate -in -9 Ross Boyd 23:19:48 08/24/03
Re: mate -in -9 John Merlino 18:12:09 08/24/03
Re: mate -in -9 John Merlino 18:07:51 08/24/03
Re: mate -in -9 Mike Byrne 17:02:44 08/24/03

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