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Subject: Underpromtion and dedicated machine test

Author: Mike Byrne

Date: 10:53:19 08/28/05


too easy for pc's - but the 4 under promotions are neat in soliving the mate
problem

Black(1): [d]7K/P1p1p1p1/2P1P1Pk/6pP/3p2P1/1P6/3P4/8 w - - 0 1
White(1): g
              time surplus  58.57  time limit 1000:00 (1000:00)
              depth   time  score   variation (1)
                1     0.00  13.26   1. a8=Q
                1->   0.00  13.26   1. a8=Q
                2     0.00  13.12   1. a8=Q d3
                2     0.00  13.22   1. Kg8 d3 2. a8=Q
                2     0.00     +1   1. a8=N!!
                2     0.00     +3   1. a8=N!!
                2     0.00  15.45   1. a8=N d3 2. Nxc7
                2->   0.00  15.45   1. a8=N d3 2. Nxc7
                3     0.00  15.45   1. a8=N d3 2. Nxc7
                3->   0.00  15.45   1. a8=N d3 2. Nxc7
                4     0.00     -1   1. a8=N
                4     0.00   9.65   1. a8=N d3 2. Nb6 cxb6
                4->   0.00   9.65   1. a8=N d3 2. Nb6 cxb6
                5     0.00     +1   1. a8=N!!
                5     0.00  10.37   1. a8=N d3 2. Nb6 cxb6 3. c7
                5->   0.00  10.37   1. a8=N d3 2. Nb6 cxb6 3. c7
                6     0.00     +1   1. a8=N!!
                6     0.02     +3   1. a8=N!!
                6     0.02  11.88   1. a8=N d3 2. Nb6 cxb6 3. c7 b5 4.
                                    c8=Q
                6->   0.02  11.88   1. a8=N d3 2. Nb6 cxb6 3. c7 b5 4.
                                    c8=Q
                7     0.02  11.88   1. a8=N d3 2. Nb6 cxb6 3. c7 b5 4.
                                    c8=Q
                7->   0.02  11.88   1. a8=N d3 2. Nb6 cxb6 3. c7 b5 4.
                                    c8=Q
                8     0.02  11.72   1. a8=N d3 2. Nb6 cxb6 3. c7 b5 4.
                                    c8=Q b4
                8->   0.02  11.72   1. a8=N d3 2. Nb6 cxb6 3. c7 b5 4.
                                    c8=Q b4
                9     0.04  11.82   1. a8=N d3 2. Nb6 cxb6 3. c7 b5 4.
                                    c8=Q b4 5. Qc5
                9->   0.04  11.82   1. a8=N d3 2. Nb6 cxb6 3. c7 b5 4.
                                    c8=Q b4 5. Qc5
               10     0.04  11.82   1. a8=N d3 2. Nb6 cxb6 3. c7 b5 4.
                                    Kg8 b4 5. c8=Q
               10->   0.04  11.82   1. a8=N d3 2. Nb6 cxb6 3. c7 b5 4.
                                    Kg8 b4 5. c8=Q
               11     0.04     -1   1. a8=N
               11     0.05   9.03   1. a8=N d3 2. Nb6 cxb6 3. c7 b5 4.
                                    c8=N b4 5. Nd6 exd6 6. e7
               11->   0.05   9.03   1. a8=N d3 2. Nb6 cxb6 3. c7 b5 4.
                                    c8=N b4 5. Nd6 exd6 6. e7
               12     0.05     +1   1. a8=N!!
               12     0.05     +3   1. a8=N!!
               12     0.05  10.74   1. a8=N d3 2. Nb6 cxb6 3. c7 b5 4.
                                    c8=N b4 5. Nd6 exd6 6. e7 d5 7. e8=Q
               12->   0.05  10.74   1. a8=N d3 2. Nb6 cxb6 3. c7 b5 4.
                                    c8=N b4 5. Nd6 exd6 6. e7 d5 7. e8=Q
               13     0.05  10.74   1. a8=N d3 2. Nb6 cxb6 3. c7 b5 4.
                                    c8=N b4 5. Nd6 exd6 6. e7 d5 7. e8=Q
               13->   0.05  10.74   1. a8=N d3 2. Nb6 cxb6 3. c7 b5 4.
                                    c8=N b4 5. Nd6 exd6 6. e7 d5 7. e8=Q
               14     0.05  10.68   1. a8=N d3 2. Nb6 cxb6 3. c7 b5 4.
                                    c8=N b4 5. Nd6 exd6 6. e7 d5 7. e8=Q
                                    d4
               14->   0.05  10.68   1. a8=N d3 2. Nb6 cxb6 3. c7 b5 4.
                                    c8=N b4 5. Nd6 exd6 6. e7 d5 7. e8=Q
                                    d4
               15     0.05  10.80   1. a8=N d3 2. Nb6 cxb6 3. c7 b5 4.
                                    c8=N b4 5. Nd6 exd6 6. e7 d5 7. e8=Q
                                    d4 8. Qe5
               15->   0.05  10.80   1. a8=N d3 2. Nb6 cxb6 3. c7 b5 4.
                                    c8=N b4 5. Nd6 exd6 6. e7 d5 7. e8=Q
                                    d4 8. Qe5
               16     0.08  10.78   1. a8=N d3 2. Nb6 cxb6 3. c7 b5 4.
                                    c8=N b4 5. Nd6 exd6 6. e7 d5 7. Kg8
                                    d4 8. e8=Q
               16->   0.08  10.78   1. a8=N d3 2. Nb6 cxb6 3. c7 b5 4.
                                    c8=N b4 5. Nd6 exd6 6. e7 d5 7. Kg8
                                    d4 8. e8=Q
               17     0.08     -1   1. a8=N
               17     0.08   2.97   1. a8=N d3 2. Nb6 cxb6 3. c7 b5 4.
                                    c8=N b4 5. Nd6 exd6 6. e7 d5 7. e8=N
                                    d4 8. Nf6 gxf6 9. g7
               17->   0.08   2.97   1. a8=N d3 2. Nb6 cxb6 3. c7 b5 4.
                                    c8=N b4 5. Nd6 exd6 6. e7 d5 7. e8=N
                                    d4 8. Nf6 gxf6 9. g7
               18     0.08     +1   1. a8=N!!
               18     0.08     +3   1. a8=N!!
               18     0.08     +M   1. a8=N!!
               18     0.08   8.38   1. a8=N d3 2. Nb6 cxb6 3. c7 b5 4.
                                    c8=N b4 5. Nd6 exd6 6. e7 d5 7. e8=N
                                    d4 8. Nf6 gxf6 9. g7 f5
               18->   0.08   8.38   1. a8=N d3 2. Nb6 cxb6 3. c7 b5 4.
                                    c8=N b4 5. Nd6 exd6 6. e7 d5 7. e8=N
                                    d4 8. Nf6 gxf6 9. g7 f5
               19     0.08     +1   1. a8=N!!
               19     0.08     +3   1. a8=N!!
               19     0.08     +M   1. a8=N!!
               19     0.08  Mat10   1. a8=N d3 2. Nb6 cxb6 3. c7 b5 4.
                                    c8=N b4 5. Nd6 exd6 6. e7 d5 7. e8=N
                                    d4 8. Nf6 gxf6 9. g7 f5 10. g8=N#
               19->   0.08  Mat10   1. a8=N d3 2. Nb6 cxb6 3. c7 b5 4.
                                    c8=N b4 5. Nd6 exd6 6. e7 d5 7. e8=N
                                    d4 8. Nf6 gxf6 9. g7 f5 10. g8=N#
              time=0.08  mat=3  n=11259  fh=99%  nps=10K
              ext-> chk=2 cap=0 1rep=0 mate=0
              predicted=0  nodes=11259  evals=146  50move=0
              endgame tablebase-> probes=0  hits=0
              SMP->  split=288  stop=1  data=3/64  elap=0.08

mate in 10 moves.


White(1): a8=N
              time used:   0.08
Black(1):



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

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