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Subject: Re: Crafty 17.13

Author: Mogens Larsen

Date: 20:21:16 09/19/00

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On September 19, 2000 at 22:25:01, Mogens Larsen wrote:

>On September 19, 2000 at 21:44:21, Mark Young wrote:
>
>>[d]6k1/4Q3/3P2p1/7n/P3N1K1/8/1q1r4/7R b - - 0 1

Crafty is slower in deciding on Rg2.

Black(1): analyze
              clearing hash tables
              time limit 15.00 (1:30)
         nss  depth   time  score   variation (1)
                6->   0.37  -2.05   1. ... Rg2+ 2. Kh4 Rg4+ 3. Kxg4 Qg2+
                                    4. Kh4 Qxh1+ 5. Kg5 Qg1+ 6. Kh6 Nf4
                7     0.66     --   1. ... Rg2+
                7     1.46  -2.75   1. ... Rg2+ 2. Kh4 Qe2 3. Qe6+ Kg7
                                    4. d7 Rh2+ 5. Rxh2 Qxh2+ 6. Qh3 Qf4+
                                    7. Qg4 Qh2+ 8. Kg5 Qe5+ 9. Kh4
                7     2.23     ++   1. ... Rd5!!
                7     2.50  -2.28   1. ... Rd5 2. Kh4 Qg2 3. Rh3 Rf5 4.
                                    Qe8+ Kg7 5. Qe6
                7     3.24     ++   1. ... Rd4!!
                7     3.72  -0.45   1. ... Rd4 2. Qe8+ Kg7 3. Qe5+ Kg8
                                    4. Re1 Nf6+ 5. Kg5 Nxe4+ 6. Rxe4 Qg2+
                                    7. Kf4 Qd2+ 8. Kf3 Rxd6
                7->   3.85  -0.45   1. ... Rd4 2. Qe8+ Kg7 3. Qe5+ Kg8
                                    4. Re1 Nf6+ 5. Kg5 Nxe4+ 6. Rxe4 Qg2+
                                    7. Kf4 Qd2+ 8. Kf3 Rxd6
                8     3.94     --   1. ... Rd4
                8     4.83  -0.86   1. ... Rd4 2. Qe8+ Kg7 3. Qe5+ Kg8
                                    4. Kg5 Qg2+ 5. Kh6 Rxe4 6. Qd5+ Kf8
                                    7. d7 Qxh1 8. d8=Q+
                8->   5.90  -0.86   1. ... Rd4 2. Qe8+ Kg7 3. Qe5+ Kg8
                                    4. Kg5 Qg2+ 5. Kh6 Rxe4 6. Qd5+ Kf8
                                    7. d7 Qxh1 8. d8=Q+
                9     6.24     --   1. ... Rd4
                9    15.84  -2.47   1. ... Rd4 2. Rxh5 Qe2+ 3. Kf4 Qxh5
                                    4. Ke3 Rxe4+ 5. Qxe4 Qc5+ 6. Qd4 Qc1+
                                    7. Ke4 Kf7
                9    24.29     ++   1. ... Rg2+!!
                9    26.38   0.00   1. ... Rg2+ 2. Kh4 Qe2 3. Qe6+ Kg7
                                    4. d7 Rh2+ 5. Rxh2 Qxh2+ 6. Kg4 Qe2+
                                    7. Kg5 Qe3+ 8. Kh4 Qe1+ 9. Kg5 Qe3+
                9->  27.14   0.00   1. ... Rg2+ 2. Kh4 Qe2 3. Qe6+ Kg7
                                    4. d7 Rh2+ 5. Rxh2 Qxh2+ 6. Kg4 Qe2+
                                    7. Kg5 Qe3+ 8. Kh4 Qe1+ 9. Kg5 Qe3+
               10    30.34   0.00   1. ... Rg2+ 2. Kh4 Qe2 3. Qe6+ Kg7
                                    4. d7 Rh2+ 5. Rxh2 Qxh2+ 6. Kg4 Qe2+
                                    7. Kg5 Qe3+ 8. Kh4 Qe1+ 9. Kg5 Qe3+
               10->  33.94   0.00   1. ... Rg2+ 2. Kh4 Qe2 3. Qe6+ Kg7
                                    4. d7 Rh2+ 5. Rxh2 Qxh2+ 6. Kg4 Qe2+
                                    7. Kg5 Qe3+ 8. Kh4 Qe1+ 9. Kg5 Qe3+
               11    45.88   0.00   1. ... Rg2+ 2. Kh4 Qe2 3. Qe6+ Kg7
                                    4. d7 Rh2+ 5. Rxh2 Qxh2+ 6. Kg4 Qe2+
                                    7. Kg5 Qe3+ 8. Kh4 Qe1+ 9. Kg5 Qe3+

As a note, Fritz Light doesn't find the move on my machine, but settles on Rd5.
I haven't analyzed more thoroughly to see if that move holds.

Mark, could you post Fritz and Junior analysis?

Mogens.



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