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Subject: MBs M17 (Crafty 19.12)

Author: Slater Wold

Date: 14:38:42 04/13/04


Crafty does some weird things here...


Crafty v19.12

White(1): setboard 6k1/2qbb1p1/3p4/1ppPpP2/4P3/3P1N2/rr1BB3/3Q2RK w - - 0 1
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)
              depth   time  score   variation (1)
                7     0.07  -4.75   1. Kh2 c4 2. dxc4 bxc4 3. Qe1 c3 4.
                                    Qg3 Rxd2 5. Nxd2 Rxd2 6. Qxg7#
                7     0.08     +1   1. Rxg7+!!
                7     0.10  -3.75   1. Rxg7+ Kxg7 2. Qg1+ Kh8 3. Qh2+ Kg8
                                    4. Qg1+ Bg5 5. Qxg5+ Kf7 6. Kh2 b4
                7->   0.11  -3.75   1. Rxg7+ Kxg7 2. Qg1+ Kh8 3. Qh2+ Kg8
                                    4. Qg1+ Bg5 5. Qxg5+ Kf7 6. Kh2 b4
                8     0.13     +1   1. Rxg7+!!
                8     0.17  -2.48   1. Rxg7+ Kxg7 2. Qg1+ Kh8 3. Qh2+ Kg8
                                    4. Qg1+ Bg5 5. Qxg5+ Kf8 6. Qh6+ Ke8
                                    7. Qh8+ Ke7 8. f6+ Kf7 9. Ng5+ Kg6
                8->   0.17  -2.48   1. Rxg7+ Kxg7 2. Qg1+ Kh8 3. Qh2+ Kg8
                                    4. Qg1+ Bg5 5. Qxg5+ Kf8 6. Qh6+ Ke8
                                    7. Qh8+ Ke7 8. f6+ Kf7 9. Ng5+ Kg6
                9     0.27     +1   1. Rxg7+!!
                9     0.46     +3   1. Rxg7+!!
                9     0.89   0.01   1. Rxg7+ Kxg7 2. Qg1+ Kh7 3. Qg6+ Kh8
                                    4. Qh6+ Kg8 5. Qg6+ Kh8
                9->   0.91   0.01   1. Rxg7+ Kxg7 2. Qg1+ Kh7 3. Qg6+ Kh8
                                    4. Qh6+ Kg8 5. Qg6+ Kh8
               10     1.72   0.01   1. Rxg7+ Kxg7 2. Qg1+ Kh8 3. Qh2+ Kg7
                                    4. Qg1+
               10->   1.77   0.01   1. Rxg7+ Kxg7 2. Qg1+ Kh8 3. Qh2+ Kg7
                                    4. Qg1+
               11     2.42   0.01   1. Rxg7+ Kxg7 2. Qg1+ Kh8 3. Qh2+ Kg7
                                    4. Qg1+
               11->   2.57   0.01   1. Rxg7+ Kxg7 2. Qg1+ Kh8 3. Qh2+ Kg7
                                    4. Qg1+
               12     4.21   0.01   1. Rxg7+ Kxg7 2. Qg1+ Kh8 3. Qh2+ Kg8
                                    4. Qg1+ Kh8
               12->   4.96   0.01   1. Rxg7+ Kxg7 2. Qg1+ Kh8 3. Qh2+ Kg8
                                    4. Qg1+ Kh8
               13     7.60   0.01   1. Rxg7+ Kxg7 2. Qg1+ Kh8 3. Qh2+ Kg8
                                    4. Qg1+ Kh8
               13->   8.11   0.01   1. Rxg7+ Kxg7 2. Qg1+ Kh8 3. Qh2+ Kg8
                                    4. Qg1+ Kh8
               14    23.35     +1   1. Rxg7+!!
               14    34.89     +3   1. Rxg7+!!
               14     1:48   2.89   1. Rxg7+ Kxg7 2. Qg1+ Kh8 3. Qh2+ Kg8
                                    4. Qg3+ Kh8 5. Qh3+ Kg8 6. Qg4+ Bg5
                                    7. Qxg5+ Kf8 8. Qh6+ Kg8 9. Qg6+ <HT>
               14->   1:49   2.89   1. Rxg7+ Kxg7 2. Qg1+ Kh8 3. Qh2+ Kg8
                                    4. Qg3+ Kh8 5. Qh3+ Kg8 6. Qg4+ Bg5
                                    7. Qxg5+ Kf8 8. Qh6+ Kg8 9. Qg6+ <HT>
               15     2:54     +1   1. Rxg7+!!
               15     4:44     +3   1. Rxg7+!!
               15     9:03     +M   1. Rxg7+!!
               15->  61:08   2.49   1. Rxg7+ Kxg7 2. Qg1+ Kh8 3. Qh2+ Kg8
                                    4. Qg3+ Kh8 5. Qh3+ Kg8 6. Qg4+ Bg5
                                    7. Qxg5+ Kf8 8. Qh6+ Kg8 9. Qg6+ <HT>
               16    62:24     -1   1. Rxg7+
               16    78:34   0.01   1. Rxg7+ Kxg7 2. Qg1+ Kh8 3. Qh2+ Kg8
                                    4. Qg3+ Kh8 5. Nxe5 dxe5 6. Qh3+ Kg7
                                    7. Qg4+ Kh7 8. Qg6+ Kh8 9. Qh6+ Kg8
                                    10. Qg6+ Kh8
               16->  79:05   0.01   1. Rxg7+ Kxg7 2. Qg1+ Kh8 3. Qh2+ Kg8
                                    4. Qg3+ Kh8 5. Nxe5 dxe5 6. Qh3+ Kg7
                                    7. Qg4+ Kh7 8. Qg6+ Kh8 9. Qh6+ Kg8
                                    10. Qg6+ Kh8
               17    94:50     +1   1. Rxg7+!!
               17   103:15     +3   1. Rxg7+!!
               17   130:41   3.20   1. Rxg7+ Kxg7 2. Qg1+ Kh8 3. Qh2+ Kg8
                                    4. Qg3+ Kh8 5. Ng5 Bxg5 6. Bxg5 Rb1+
                                    7. Kg2 Rxe2+ 8. Kf3 Kh7 9. Bf6 Rg1
                                    10. Qxg1 Bxf5 11. exf5 Rg2 12. Qh1+
                                    Kg8 13. Qxg2+ Kf8 14. Ke4
               17-> 131:31   3.20   1. Rxg7+ Kxg7 2. Qg1+ Kh8 3. Qh2+ Kg8
                                    4. Qg3+ Kh8 5. Ng5 Bxg5 6. Bxg5 Rb1+
                                    7. Kg2 Rxe2+ 8. Kf3 Kh7 9. Bf6 Rg1
                                    10. Qxg1 Bxf5 11. exf5 Rg2 12. Qh1+
                                    Kg8 13. Qxg2+ Kf8 14. Ke4
               18   162:41   3.23   1. Rxg7+ Kxg7 2. Qg1+ Kh8 3. Qh2+ Kg8
                                    4. Qg3+ Kh8 5. Ng5 Bxg5 6. Bxg5 Rb1+
                                    7. Kg2 Rxe2+ 8. Kf3 Kh7 9. Bf6 Rg1
                                    10. Qxg1 Bxf5 11. exf5 Rg2 12. Qh1+
                                    Kg8 13. Qh8+ Kf7 14. Qh7+ Kxf6 15.
                                    Qxc7 Rd2 16. Qxd6+ Kxf5 17. Qxc5 Rxd3+
               18-> 164:52   3.23   1. Rxg7+ Kxg7 2. Qg1+ Kh8 3. Qh2+ Kg8
                                    4. Qg3+ Kh8 5. Ng5 Bxg5 6. Bxg5 Rb1+
                                    7. Kg2 Rxe2+ 8. Kf3 Kh7 9. Bf6 Rg1
                                    10. Qxg1 Bxf5 11. exf5 Rg2 12. Qh1+
                                    Kg8 13. Qh8+ Kf7 14. Qh7+ Kxf6 15.
                                    Qxc7 Rd2 16. Qxd6+ Kxf5 17. Qxc5 Rxd3+
               19   226:38     +1   1. Rxg7+!!
               19   336:15     +3   1. Rxg7+!!
               19   466:54   3.56   1. Rxg7+ Kxg7 2. Qg1+ Kh8 3. Qh2+ Kg8
                                    4. Qg2+ Kh8 5. Qh3+ Kg8 6. Qg4+ Kh8
                                    7. Ng5 Ra1+ 8. Kg2 Bxg5 9. Bxg5 Bxf5
                                    10. Bf6+ Kh7 <HT>
               19-> 474:21   3.56   1. Rxg7+ Kxg7 2. Qg1+ Kh8 3. Qh2+ Kg8
                                    4. Qg2+ Kh8 5. Qh3+ Kg8 6. Qg4+ Kh8
                                    7. Ng5 Ra1+ 8. Kg2 Bxg5 9. Bxg5 Bxf5
                                    10. Bf6+ Kh7 <HT>
?              20   584:15   1/36*  1. Rxg7+
White(1): ?
              time=584:30  cpu=99%  mat=-3  n=87825713514  fh=81%  nps=2.50M
              ext-> chk=-163446818 cap=159223970 pp=336287143 1rep=1125327428 ma
te=73312331
              predicted=0  nodes=87825713514  evals=3648873902  50move=0
              endgame tablebase-> probes=0  hits=0


After that analysis, I stepped up moves to see when it would see the mate.



              time surplus   0.00  time limit 3:00 (3:00)
              depth   time  score   variation (1)
                8     0.05   0.01   2. Qh3+ Kg7 3. Qg4+ Kh7 4. Qg6+ Kh8
                                    5. Qh5+ Kg7 6. Bh6+ Kh8 7. Bg5+ Kg7
                                    8. Bh6+
                8->   0.05   0.01   2. Qh3+ Kg7 3. Qg4+ Kh7 4. Qg6+ Kh8
                                    5. Qh5+ Kg7 6. Bh6+ Kh8 7. Bg5+ Kg7
                                    8. Bh6+
                9     0.07     +1   2. Qh3+!!
                9     0.07     +3   2. Qh3+!!
                9     0.07     +M   2. Qh3+!!
                9     0.19   0.01   2. Qh3+ Kg7 3. Qg4+ Kh7 4. Qg6+ Kh8
                                    5. Bh6 Ra1+ 6. Ng1 Rxg1+ 7. Kxg1 Rb1+
                                    8. Kh2 Bf8 9. Qf6+ Kh7 10. Qf7+ Kh8
                                    11. Qf6+
                9->   0.21   0.01   2. Qh3+ Kg7 3. Qg4+ Kh7 4. Qg6+ Kh8
                                    5. Bh6 Ra1+ 6. Ng1 Rxg1+ 7. Kxg1 Rb1+
                                    8. Kh2 Bf8 9. Qf6+ Kh7 10. Qf7+ Kh8
                                    11. Qf6+
               10     0.21     +1   2. Qh3+!!
               10     0.21     +3   2. Qh3+!!
               10     0.21     +M   2. Qh3+!!
               10     1.71   0.01   2. Qh3+ Kg8 3. Qg2+
               10->   1.72   0.01   2. Qh3+ Kg8 3. Qg2+
               11     1.80     +1   2. Qh3+!!
               11     1.88     +3   2. Qh3+!!
               11     2.11     +M   2. Qh3+!!
               11     3.85   3.15   2. Qh3+ Kg8 3. Qg4+ Bg5 4. Qxg5+ Kf8
                                    5. Qf6+ Kg8 6. Bh6 Ra1+ 7. Kh2 Rxe2+
                                    8. Kg3 Rg1+ 9. Nxg1 Bxf5 10. Nxe2 Bd7
               11->   3.85   3.15   2. Qh3+ Kg8 3. Qg4+ Bg5 4. Qxg5+ Kf8
                                    5. Qf6+ Kg8 6. Bh6 Ra1+ 7. Kh2 Rxe2+
                                    8. Kg3 Rg1+ 9. Nxg1 Bxf5 10. Nxe2 Bd7
               12     4.53   3.39   2. Qh3+ Kg8 3. Qg4+ Bg5 4. Qxg5+ Kf8
                                    5. Qf6+ Kg8 6. Bh6 Ra1+ 7. Kh2 Rxe2+
                                    8. Kg3 Rg1+ 9. Nxg1 Bxf5 10. Nxe2 Bc8
                                    11. Kf3
               12->   4.55   3.39   2. Qh3+ Kg8 3. Qg4+ Bg5 4. Qxg5+ Kf8
                                    5. Qf6+ Kg8 6. Bh6 Ra1+ 7. Kh2 Rxe2+
                                    8. Kg3 Rg1+ 9. Nxg1 Bxf5 10. Nxe2 Bc8
                                    11. Kf3
               13     7.10     +1   2. Qh3+!!
               13     9.55     +3   2. Qh3+!!
               13    14.78     +M   2. Qh3+!!
               13     2:11  Mat13   2. Qh3+ Kg8 3. Qg4+ Kh8 4. Qh5+ Kg8
                                    5. Qg6+ <HT>
               13->   2:28  Mat13   2. Qh3+ Kg8 3. Qg4+ Kh8 4. Qh5+ Kg8
                                    5. Qg6+ <HT>
?              14     2:28   1/33*  2. Qh3+
White(2): ?
              time=2:30  cpu=98%  mat=-7  n=464541946  fh=97%  nps=3.09M
              ext-> chk=56851953 cap=559809 pp=2024232 1rep=8914070 mate=401123
              predicted=0  nodes=464541946  evals=10165028  50move=2
              endgame tablebase-> probes=0  hits=0



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