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Subject: Re: Difficult Test Position(Takes Chessmaster over 12 hours to see Draw)

Author: Mike Byrne

Date: 16:42:16 07/26/03

Go up one level in this thread


24 seconds to see the drawing move for Crafy 19.04SE (standard) a little longer
(25 minutes) to see the draw score

Black(1): [d]Q7/8/5pk1/PpP3p1/6n1/3qB1PK/1P3P2/8 b - - 0 1
Black(1): go
end-game phase
              clearing hash tables
              time surplus  29.86  time limit 148:08 (148:08)
              depth   time  score   variation (1)
                2     0.00   3.98   1. ... Qf1+ 2. Qg2 Nxe3 3. fxe3
                2->   0.02   3.98   1. ... Qf1+ 2. Qg2 Nxe3 3. fxe3
                3     0.02     ++   1. ... Qf1+!!
                3     0.02   1.64   1. ... Qf1+ 2. Qg2 Nxe3 3. Qxf1 Nxf1
                3->   0.02   1.64   1. ... Qf1+ 2. Qg2 Nxe3 3. Qxf1 Nxf1
                4     0.02     --   1. ... Qf1+
                4     0.03   2.16   1. ... Qf1+ 2. Qg2 Nxe3 3. Qxf1 g4+
                                    4. Kh4 Nxf1 5. Kxg4
                4->   0.05   2.16   1. ... Qf1+ 2. Qg2 Nxe3 3. Qxf1 g4+
                                    4. Kh4 Nxf1 5. Kxg4
                5     0.05   2.16   1. ... Qf1+ 2. Qg2 Nxe3 3. Qxf1 g4+
                                    4. Kh4 Nxf1 5. Kxg4
                5->   0.07   2.16   1. ... Qf1+ 2. Qg2 Nxe3 3. Qxf1 g4+
                                    4. Kh4 Nxf1 5. Kxg4 (s=9)
                6     0.08   2.41   1. ... Qf1+ 2. Qg2 Nxe3 3. Qxf1 g4+
                                    4. Kh4 Nxf1 5. c6 (s=8)
                6->   0.11   2.41   1. ... Qf1+ 2. Qg2 Nxe3 3. Qxf1 g4+
                                    4. Kh4 Nxf1 5. c6 (s=2)
                7     0.13   2.27   1. ... Qf1+ 2. Qg2 Nxe3 3. Qxf1 g4+
                                    4. Kh2 Nxf1+ 5. Kg2 Nd2 6. c6
                7->   0.22   2.27   1. ... Qf1+ 2. Qg2 Nxe3 3. Qxf1 g4+
                                    4. Kh2 Nxf1+ 5. Kg2 Nd2 6. c6 (s=4)
                8     0.30     --   1. ... Qf1+
                8     0.46   2.78   1. ... Qf1+ 2. Qg2 Qb1 3. Bd4 Qd3 4.
                                    Qd5 Nxf2+ 5. Kg2 Ng4 6. c6 (s=3)
                8->   1.11   2.78   1. ... Qf1+ 2. Qg2 Qb1 3. Bd4 Qd3 4.
                                    Qd5 Nxf2+ 5. Kg2 Ng4 6. c6 (s=4)
                9     1.36   2.56   1. ... Qf1+ 2. Qg2 Qb1 3. Qd5 Nxe3
                                    4. fxe3 Qf1+ 5. Kh2 Qe2+ 6. Qg2 Qxe3
                                    7. Qc2+ Kh5 8. c6 (s=3)
                9->   3.14   2.56   1. ... Qf1+ 2. Qg2 Qb1 3. Qd5 Nxe3
                                    4. fxe3 Qf1+ 5. Kh2 Qe2+ 6. Qg2 Qxe3
                                    7. Qc2+ Kh5 8. c6 (s=5)
               10     3.64   2.33   1. ... Qf1+ 2. Qg2 Qb1 3. Qd5 Nxe3
                                    4. fxe3 Qf1+ 5. Kh2 Qe2+ 6. Qg2 Qxe3
                                    7. Qc2+ f5 8. c6 Kf6 (s=4)
               10->   5.53   2.33   1. ... Qf1+ 2. Qg2 Qb1 3. Qd5 Nxe3
                                    4. fxe3 Qf1+ 5. Kh2 Qe2+ 6. Qg2 Qxe3
                                    7. Qc2+ f5 8. c6 Kf6 (s=5)
               11     9.05     ++   1. ... Qf1+!!
               11    24.77   1.80   1. ... Qf5 2. Qg8+ Kh6 3. Qh8+ Kg6
                                    4. Qe8+ Kh6 5. Kg2 Qd5+ 6. f3 Ne5 7.
                                    Kh2 Qxf3 8. Qf8+ Kg6 9. Bd4
               11->  24.77   1.80   1. ... Qf5 2. Qg8+ Kh6 3. Qh8+ Kg6
                                    4. Qe8+ Kh6 5. Kg2 Qd5+ 6. f3 Ne5 7.
                                    Kh2 Qxf3 8. Qf8+ Kg6 9. Bd4 (s=2)
               12    32.63   1.60   1. ... Qf5 2. Qg8+ Kh6 3. Qh8+ Kg6
                                    4. Qe8+ Kh6 5. Kg2 Qd5+ 6. f3 Ne5 7.
                                    Kh2 Qxf3 8. Qf8+ Kg6 9. Bd4 Kf5
               12->  52.14   1.60   1. ... Qf5 2. Qg8+ Kh6 3. Qh8+ Kg6
                                    4. Qe8+ Kh6 5. Kg2 Qd5+ 6. f3 Ne5 7.
                                    Kh2 Qxf3 8. Qf8+ Kg6 9. Bd4 Kf5 (s=4)
               13     1:31   1.25   1. ... Qf5 2. Qg8+ Kh6 3. Qh8+ Kg6
                                    4. Qe8+ Kh6 5. Kg2 Qd5+ 6. f3 Ne5 7.
                                    Kh2 Qxf3 8. Qf8+ Kg6 9. Qg8+ Kf5 10.
                                    Qh7+ Ke6 11. Bd4 (s=3)
               13->   2:16   1.25   1. ... Qf5 2. Qg8+ Kh6 3. Qh8+ Kg6
                                    4. Qe8+ Kh6 5. Kg2 Qd5+ 6. f3 Ne5 7.
                                    Kh2 Qxf3 8. Qf8+ Kg6 9. Qg8+ Kf5 10.
                                    Qh7+ Ke6 11. Bd4 (s=2)
               14     3:50   1.02   1. ... Qf5 2. Qg8+ Kh6 3. Qh8+ Kg6
                                    4. Qe8+ Kh6 5. Kg2 Qd5+ 6. f3 Ne5 7.
                                    Bf2 Qxf3+ 8. Kg1 Qd1+ 9. Kh2 Qb3 10.
                                    c6 Ng4+ 11. Kg2 Nxf2 12. Kxf2 Qxb2+
               14->   4:17   1.02   1. ... Qf5 2. Qg8+ Kh6 3. Qh8+ Kg6
                                    4. Qe8+ Kh6 5. Kg2 Qd5+ 6. f3 Ne5 7.
                                    Bf2 Qxf3+ 8. Kg1 Qd1+ 9. Kh2 Qb3 10.
                                    c6 Ng4+ 11. Kg2 Nxf2 12. Kxf2 Qxb2+
               15    13:44     ++   1. ... Qf5!!
               15    25:44   0.00   1. ... Qf5 2. Qg8+ Kh6 3. Qh8+ Kg6
                                    4. Qe8+ Kh6 5. Kg2 Qd5+ 6. Kh3 Qf5
               15->  26:09   0.00   1. ... Qf5 2. Qg8+ Kh6 3. Qh8+ Kg6
                                    4. Qe8+ Kh6 5. Kg2 Qd5+ 6. Kh3 Qf5
               16    32:30   1/31*  1. ... Qf5



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