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Subject: Re: Position that separates programs from strong GM Ponomariov (2616)

Author: Dann Corbit

Date: 10:49:17 03/14/00

Go up one level in this thread


Crafty plans the same thing (in a round-about way) but changes its mind in ply
16.  I do think the original 1. ... Bd4+ 2. Kh1 Bxc3 plan seems better, but I
must confess, I can't really see 8 fullmoves ahead in all directions, so crafty
probably knows much better than I do.  In any case, Rf8 is probably a pretty
good move too.  I do like the idea of paralyzing the bishop, and probably the
chess programs can't see that it is shut in permanently.

pondering enabled.
EGTB cache memory = 6M bytes.
hash table memory = 24M bytes.
pawn hash table memory = 8M bytes.
play best book line after search.
EGTB access enabled
using tbpath=./TB
4 piece tablebase files found
1302kb of RAM used for TB indices and decompression tables
PFGA: EPD record: 1
middle-game phase
              clearing hash tables
              time surplus   0.00  time limit 333:20 (333:20)
         nss  depth   time  score   variation (1)
Black(0): exit

                6     0.81   0.76   1. ... Rd6 2. Qg4 Bxc3 3. bxc3 Rxe6
                                    4. Qd4+ Kg8 5. Rf1
                6->   1.07   0.76   1. ... Rd6 2. Qg4 Bxc3 3. bxc3 Rxe6
                                    4. Qd4+ Kg8 5. Rf1
                7     1.45   0.82   1. ... Rd6 2. Rf1 Nxe6 3. Qg4 Qc5+
                                    4. Kh1 Bxc3 5. bxc3 Qe3
                7     2.06   0.96   1. ... Bd4+ 2. Kh1 Rf8 3. Nd1 Rf6 4.
                                    Qd2 Bb6 5. Nc3 Rxe6
                7->   2.21   0.96   1. ... Bd4+ 2. Kh1 Rf8 3. Nd1 Rf6 4.
                                    Qd2 Bb6 5. Nc3 Rxe6
                8     2.80   1.04   1. ... Bd4+ 2. Kh1 Rf8 3. Na2 Rf6 4.
                                    Nb4 Qc5 5. c3 Rxe6
                8->   4.34   1.04   1. ... Bd4+ 2. Kh1 Rf8 3. Na2 Rf6 4.
                                    Nb4 Qc5 5. c3 Rxe6
                9     5.74   0.84   1. ... Bd4+ 2. Kh1 Rf8 3. Nd1 Rf6 4.
                                    c3 Rxe6 5. Qd2 Rxe1+ 6. Qxe1 Bc5 7.
                                    Bf5
                9     9.17   0.98   1. ... Rf8 2. Na2 Qc5+ 3. Kh1 Bxb2
                                    4. c3 Qf2 5. Qe5+ Rf6 6. Nb4 d4
                9    14.03   1.02   1. ... Qb6+ 2. Kh1 Bxc3 3. bxc3 Rf8
                                    4. Rf1 Rxf1+ 5. Qxf1 Nxe6 6. Qf7 Qd6
                                    7. Qe8+ Kg7 8. Qxb5 Kf6
                9->  17.27   1.02   1. ... Qb6+ 2. Kh1 Bxc3 3. bxc3 Rf8
                                    4. Rf1 Rxf1+ 5. Qxf1 Nxe6 6. Qf7 Qd6
                                    7. Qe8+ Kg7 8. Qxb5 Kf6
               10    20.39   0.95   1. ... Qb6+ 2. Kh1 Bxc3 3. bxc3 Qd6
                                    4. Qf3 Nxe6 5. h4 Nc5 6. Rf1 e5 7.
                                    Qf5
               10    29.54   1.01   1. ... Bd4+ 2. Kh1 Bxc3 3. bxc3 Rf8
                                    4. Qg4 Rf6 5. Qd1 Rxe6 6. Qd4+ Kg8
                                    7. Qg4+ <HT>
               10->  39.49   1.01   1. ... Bd4+ 2. Kh1 Bxc3 3. bxc3 Rf8
                                    4. Qg4 Rf6 5. Qd1 Rxe6 6. Qd4+ Kg8
                                    7. Qg4+ <HT>
               11    44.46   1.09   1. ... Bd4+ 2. Kh1 Bxc3 3. bxc3 Rf8
                                    4. Qe3 Qd6 5. g4 Rf6 6. g5 Rg6 7. Rf1
                                    Qxe6
               11     2:20   1.10   1. ... Bg7 2. Nd1 Rd6 3. Rf1 Rxe6 4.
                                    Qg4 Rg6 5. Qc8+ Ne8 6. Qxc6 Bd4+ 7.
                                    Kh2 Rxc6
               11->   2:21   1.10   1. ... Bg7 2. Nd1 Rd6 3. Rf1 Rxe6 4.
                                    Qg4 Rg6 5. Qc8+ Ne8 6. Qxc6 Bd4+ 7.
                                    Kh2 Rxc6
               12     3:08   1.01   1. ... Bg7 2. Nd1 Rd6 3. c3 Rxe6 4.
                                    Ne3 d4 5. cxd4 Bxd4 6. Qf2 Rf6 7. Bf5
                                    e5
               12     5:07   1.11   1. ... Bd4+ 2. Kh1 Bxc3 3. bxc3 Rf8
                                    4. Qe5+ Rf6 5. g4 Qxe6 6. Qg3 Qd7 7.
                                    Qe5 Qc6 8. Qxe7 d4+ 9. Kg1 dxc3
               12->   8:01   1.11   1. ... Bd4+ 2. Kh1 Bxc3 3. bxc3 Rf8
                                    4. Qe5+ Rf6 5. g4 Qxe6 6. Qg3 Qd7 7.
                                    Qe5 Qc6 8. Qxe7 d4+ 9. Kg1 dxc3
               13     8:39   1.27   1. ... Bd4+ 2. Kh1 Bxc3 3. bxc3 Qd6
                                    4. Qe3 Rf8 5. g4 Rf6 6. g5 Rxe6 7.
                                    Qd4+ Kg8 8. Rf1 Re2 9. Kg1
               13->  10:39   1.27   1. ... Bd4+ 2. Kh1 Bxc3 3. bxc3 Qd6
                                    4. Qe3 Rf8 5. g4 Rf6 6. g5 Rxe6 7.
                                    Qd4+ Kg8 8. Rf1 Re2 9. Kg1
               14    12:39   1.31   1. ... Bd4+ 2. Kh1 Bxc3 3. bxc3 Qd6
                                    4. Qe3 Rf8 5. Ba2 Nxe6 6. g4 Nf4 7.
                                    Qxe7 Qxe7 8. Rxe7 Ra8 9. Rf7 Rxa2 10.
                                    Rxf4 Rxc2
               14->  23:29   1.31   1. ... Bd4+ 2. Kh1 Bxc3 3. bxc3 Qd6
                                    4. Qe3 Rf8 5. Ba2 Nxe6 6. g4 Nf4 7.
                                    Qxe7 Qxe7 8. Rxe7 Ra8 9. Rf7 Rxa2 10.
                                    Rxf4 Rxc2
               15    26:45   1.32   1. ... Bd4+ 2. Kh1 Bxc3 3. bxc3 Qd6
                                    4. Qe3 Rf8 5. Ba2 Nxe6 6. g4 Nf4 7.
                                    Qxe7 Qxe7 8. Rxe7 Nxh3 9. Kg2 Nf4+
                                    10. Kg3 Kg8
               15->  43:14   1.32   1. ... Bd4+ 2. Kh1 Bxc3 3. bxc3 Qd6
                                    4. Qe3 Rf8 5. Ba2 Nxe6 6. g4 Nf4 7.
                                    Qxe7 Qxe7 8. Rxe7 Nxh3 9. Kg2 Nf4+
                                    10. Kg3 Kg8
               16    56:24   1.37   1. ... Bd4+ 2. Kh1 Bxc3 3. bxc3 Qd6
                                    4. Qg4 Rf8 5. g3 Rf6 6. Kg2 Nxe6 7.
                                    Qh5 Ng7 8. Qg5 h6 9. Qg4 e5 10. Kg1
               16   321:38   1.39   1. ... Rf8 2. Qe3 Qd6 3. Nd1 Nxe6 4.
                                    c3 Nf4 5. Rf1 e5 6. Kh1 Be7 7. Re1
                                    e4 8. Rf1 Nd3 9. Rxf8+ Bxf8 10. Bc2
              time=333:21  cpu=99%  mat=0  n=550797967  fh=3%  nps=27538
              ext-> checks=241584858 recaps=14329112 pawns=5825677 1rep=29442595
thrt:2429340
              predicted=0  nodes=550797967  evals=1082917137
              endgame tablebase-> probes done=0  successful=0



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