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Subject: Surprise! Crafty 19.00 SE finds Rd8 in 5:08

Author: Mike Byrne

Date: 16:31:16 10/18/02

Go up one level in this thread


On October 18, 2002 at 12:10:06, Will Singleton wrote:

>Adjusted position with the h7 pawn moved to h6, which prevents Ng5.
>I would be surprised if any amateur program can find this, other
>than Ruffian.
>
>[D]r1b1k2r/pp3pp1/4pb1p/2n5/3RB3/4BN2/PqP1QPPP/3R2K1 w kq - 0 1
>
Surprise! modified Crafty avlaiable free via email to mfbyrne_pa@msn.com

standard recommended settings:
==================================================================
krafty gm
ext ch 1
ext ma .8
ext on .8
ext rec .8
ext pu .8
===================================================================

I will let run some to see if I get the pv...

White(1): r1b1k2r/pp3pp1/4pb1p/2n5/3RB3/4BN2/PqP1QPPP/3R2K1 w kq - 0 1
White(1): go
              clearing hash tables
              time surplus   0.00  time limit 100:00 (100:00)
              depth   time  score   variation (1)
starting thread 1
                1     0.00   0.39   1. Bc1 Qxa2
                1->   0.00   0.39   1. Bc1 Qxa2
                2     0.00   0.39   1. Bc1 Qxa2
                2->   0.02   0.39   1. Bc1 Qxa2
                3     0.02     ++   1. Bc1!!
                3     0.02   1.32   1. Bc1 Qc3 2. Bd2
                3->   0.03   1.32   1. Bc1 Qc3 2. Bd2
                4     0.03   1.14   1. Bc1 Qb6 2. Rd6 Qc7
                4->   0.05   1.14   1. Bc1 Qb6 2. Rd6 Qc7
                5     0.06   1.24   1. Bc1 Qb6 2. Rd6 Qc7 3. Bf5
                5->   0.09   1.24   1. Bc1 Qb6 2. Rd6 Qc7 3. Bf5
                6     0.09     --   1. Bc1
                6     0.13  -0.13   1. Bc1 Qb6 2. Rd6 Qb4 3. c4 O-O
                6->   0.36  -0.13   1. Bc1 Qb6 2. Rd6 Qb4 3. c4 O-O (s=9)
                7     0.41  -0.02   1. Bc1 Qb6 2. Rd6 Qb4 3. c4 O-O 4.
                                    Bd2 (s=8)
                7->   0.91  -0.02   1. Bc1 Qb6 2. Rd6 Qb4 3. c4 O-O 4.
                                    Bd2 (s=9)
                8     1.08     --   1. Bc1
                8     1.31  -0.50   1. Bc1 Qb6 2. Rd6 Qc7 3. Qb5+ Bd7 4.
                                    Bc6 O-O-O 5. Bxd7+ Rxd7 (s=8)
                8->   3.09  -0.50   1. Bc1 Qb6 2. Rd6 Qc7 3. Qb5+ Bd7 4.
                                    Bc6 O-O-O 5. Bxd7+ Rxd7 (s=7)
                9     3.70  -0.44   1. Bc1 Qb6 2. Rd6 Qc7 3. Ba3 O-O 4.
                                    Qc4 Na6 5. Qe2 (s=6)
                9->   8.34  -0.44   1. Bc1 Qb6 2. Rd6 Qc7 3. Ba3 O-O 4.
                                    Qc4 Na6 5. Qe2 (s=7)
               10    10.36  -0.80   1. Bc1 Qb6 2. Rd6 Qa5 3. Bd2 Qa4 4.
                                    Bd5 O-O 5. Be3 exd5 6. Bxc5 (s=6)
               10    21.24  -0.74   1. Qc4 Nxe4 2. Rxe4 O-O 3. Bd4 Bxd4
                                    4. Rdxd4 Qa3 5. Re5 Qe7 6. Qe2
               10->  30.11  -0.74   1. Qc4 Nxe4 2. Rxe4 O-O 3. Bd4 Bxd4
                                    4. Rdxd4 Qa3 5. Re5 Qe7 6. Qe2 (s=7)
               11    32.99  -0.76   1. Qc4 Nxe4 2. Rxe4 O-O 3. Bd4 Bxd4
                                    4. Rexd4 e5 5. Nxe5 Be6 6. Qe2 Qxa2
                                    (s=6)
               11    43.49  -0.59   1. Bc1 Qb6 2. Be3 Bxd4 3. Bxd4 O-O
                                    4. Qc4 Rd8 5. Nd2 Rxd4 6. Qxd4 Nxe4
                                    7. Qxe4 (s=4)
               11->   1:13  -0.59   1. Bc1 Qb6 2. Be3 Bxd4 3. Bxd4 O-O
                                    4. Qc4 Rd8 5. Nd2 Rxd4 6. Qxd4 Nxe4
                                    7. Qxe4 (s=4)
               12     1:23  -0.88   1. Bc1 Qb6 2. Be3 Bxd4 3. Bxd4 O-O
                                    4. Qc4 Rd8 5. Nd2 Rxd4 6. Qxd4 Qc7
                                    (s=3)
               12     1:40  -0.82   1. Rd8+ Bxd8 2. Bxc5 Bf6 3. Nd4 Bd7
                                    4. Nf5 Be5 5. Nd6+ Bxd6 6. Bxd6 Bb5
                                    7. Qf3 Rd8 8. Bxb7 Qxc2 (s=2)
               12     2:06  -0.74   1. Qc4 Nxe4 2. Rxe4 O-O 3. Bd4 Bxd4
                                    4. Rexd4 b5 5. Qc5 Bb7 6. Ne5 Bd5 7.
                                    Nd7
               12->   4:01  -0.74   1. Qc4 Nxe4 2. Rxe4 O-O 3. Bd4 Bxd4
                                    4. Rexd4 b5 5. Qc5 Bb7 6. Ne5 Bd5 7.
                                    Nd7 (s=5)
               13     4:33  -0.88   1. Qc4 Nxe4 2. Rxe4 O-O 3. Bd4 Bxd4
                                    4. Rexd4 e5 5. Nxe5 Be6 6. Qe2 Rfc8
                                    7. Nc4 Bxc4 8. Rxc4 Qxa2 9. Rxc8+ Rxc8
                                    (s=4)
               13     5:08     ++   1. Rd8+!!
               13->   9:31  -0.35   1. Rd8+ (s=4)
               14    11:09     ++   1. Rd8+!!
               14    16:15   3/50*  1. Bf5



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