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Subject: Re: Test Move For Engines

Author: Mike Byrne

Date: 17:25:21 06/05/02

Go up one level in this thread


On June 05, 2002 at 13:42:57, Bas Hamstra wrote:

>On June 05, 2002 at 12:15:38, Art Basham wrote:
>
>>Here the correct move is 1. RxN..!
>>
>>[D]rnbq1rk1/pppp1ppp/5n2/2b5/2B4Q/5R2/PB3PPP/3R1K2 w - -
>>
>>Mach 3 finds RxN in  about 62 sec.
>>
>>Most engines I have play BxN...? etc.
>
>According to Tao the right move is Rg3 with a winning score of +2.xx and Rxf6 is
>far worse. For instance Rxf6 Nc6. And then???
>
>Bas.
after Nc6
7     2.62  Mat05   2. Bd3 Re8 3. Bxh7+ Kh8 4. Bd3+ Kg8
                                    5. Qxf7+ Kh8 6. Rh6#


and then mate in 4 -- Rxf6 is by far the best move

         nss  depth   time  score   variation (1)
                6->   0.34  -5.26   1. Bxf6 Be7 2. Bxe7 Qxe7 3. Re1 Qd6
                                    4. Bxf7+ Kh8
                7     0.38     ++   1. Bxf6!!
                7     0.86   0.89   1. Bxf6 Qxf6 2. Rxf6 gxf6 3. Qxc5 Nc6
                                    4. Qf5 Ne5
                7->   0.91   0.89   1. Bxf6 Qxf6 2. Rxf6 gxf6 3. Qxc5 Nc6
                                    4. Qf5 Ne5
                8     1.11   1.06   1. Bxf6 Qxf6 2. Rxf6 gxf6 3. Qxc5 Nc6
                                    4. Qf5 Ne5 5. Bd5
                8->   1.25   1.06   1. Bxf6 Qxf6 2. Rxf6 gxf6 3. Qxc5 Nc6
                                    4. Qf5 Ne5 5. Bd5
                9     1.75   1.06   1. Bxf6 Qxf6 2. Rxf6 gxf6 3. Bd3 h6
                                    4. Qxc5 Nc6 5. Qh5 Kg7
                9->   2.06   1.06   1. Bxf6 Qxf6 2. Rxf6 gxf6 3. Bd3 h6
                                    4. Qxc5 Nc6 5. Qh5 Kg7
               10     2.89     ++   1. Bxf6!!
               10    20.75   1.67   1. Bxf6 Qxf6 2. Rxf6 gxf6 3. Bd3 h6
                                    4. Qxc5 Re8 5. Qc1 d5 6. Qxh6
               10->  30.73   1.67   1. Bxf6 Qxf6 2. Rxf6 gxf6 3. Bd3 h6
                                    4. Qxc5 Re8 5. Qc1 d5 6. Qxh6
               11    33.81     ++   1. Bxf6!!
               11     1:02   2.32   1. Bxf6 Qxf6 2. Rxf6 d5 3. Rxd5 gxf6
                                    4. Rxc5 Nc6 5. Bd3 f5 6. Qg5+ Kh8 7.
                                    Rd5
         (2)   11->   1:36   2.32   1. Bxf6 Qxf6 2. Rxf6 d5 3. Rxd5 gxf6
                                    4. Rxc5 Nc6 5. Bd3 f5 6. Qg5+ Kh8 7.
                                    Rd5
               12     1:43   2.29   1. Bxf6 Qxf6 2. Rxf6 d5 3. Rxd5 gxf6
                                    4. Rxc5 Nc6 5. Bd3 f5 6. Qg5+ Kh8 7.
                                    Qf6+ Kg8 8. Bxf5 Bxf5 9. Rxf5
               12     2:37     ++   1. Rxf6!!
               12     6:53   3.78   1. Rxf6 Qxf6 2. Bxf6 Be3 3. fxe3 gxf6
                                    4. Bd3 Re8 5. Qxh7+ Kf8 6. Bc4 d5 7.
                                    Bxd5 Re7
               12->   7:01   3.78   1. Rxf6 Qxf6 2. Bxf6 Be3 3. fxe3 gxf6
                                    4. Bd3 Re8 5. Qxh7+ Kf8 6. Bc4 d5 7.
                                    Bxd5 Re7
               13     7:56     ++   1. Rxf6!!
               13    17:44   4.57   1. Rxf6 Qxf6 2. Bxf6 Be3 3. fxe3 gxf6
                                    4. Bd3 Re8 5. Qxh7+ Kf8 6. Bc4 Ke7
                                    7. Qxf7+ Kd8 8. Qxf6+ Re7 9. Be6 Nc6
                                    10. Kg1
               13->  18:11   4.57   1. Rxf6 Qxf6 2. Bxf6 Be3 3. fxe3 gxf6
                                    4. Bd3 Re8 5. Qxh7+ Kf8 6. Bc4 Ke7
                                    7. Qxf7+ Kd8 8. Qxf6+ Re7 9. Be6 Nc6
                                    10. Kg1
               14    20:15   4.38   1. Rxf6 Qxf6 2. Bxf6 Be3 3. fxe3 gxf6
                                    4. Bd3 Re8 5. Qxh7+ Kf8 6. Bc4 Ke7
                                    7. Qxf7+ Kd8 8. Qxf6+ Re7 9. Kg1 d6
                                    10. Qh8+ Re8 11. Qd4
               14->  21:44   4.38   1. Rxf6 Qxf6 2. Bxf6 Be3 3. fxe3 gxf6
                                    4. Bd3 Re8 5. Qxh7+ Kf8 6. Bc4 Ke7
                                    7. Qxf7+ Kd8 8. Qxf6+ Re7 9. Kg1 d6
                                    10. Qh8+ Re8 11. Qd4
               15    27:11     ++   1. Rxf6!!



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