Author: Robert Hyatt
Date: 10:38:38 05/08/04
Go up one level in this thread
On May 08, 2004 at 13:25:03, Will Singleton wrote:
>On May 08, 2004 at 13:14:04, Kurt Utzinger wrote:
>
>>On May 08, 2004 at 11:54:58, Rob Basham wrote:
>>
>>>[D]2r2rk1/p1q1bpp1/1p6/n2R4/8/P4N2/1B2QPPP/5RK1 w - - 0 1
>>>
>>>White plays....Bxg7...!
>>>
>>>Any programs find this neat move?
>>>
>>>this is taken from the 24 brilliant moves file....
>>>
>>>thanks
>>>Rob
>>
>>
>> My beloved Aristarch 4.41 can't find the winning move
>> within reasonable time.
>> Kurt
>>
>>Aristarch 4.41 UCI1: (P4 1.8/32 MB hash)
>> 2- 00:00 -0.42 Bxg7 Kxg7
>> 2 00:00 -1.03 Bxg7 Kxg7
>> 2+ 00:00 -1.02 h4 Bxa3
>> 2+ 00:00 -0.82 h4 Bxa3
>> 2 00:00 0.24 h4 Rfd8
>> 2+ 00:00 0.25 h3 Rfd8
>> 2 00:00 0.32 h3 Rfd8
>> 2+ 00:00 0.33 Qd3 Rfd8
>> 2 00:00 0.34 Qd3 Rfd8
>> 2+ 00:00 0.35 Re1 Qc4
>> 2+ 00:00 0.55 Re1 Qc4
>> 2 00:00 0.64 Re1 Rfd8
>> 2+ 00:00 0.65 Rfd1 Rfd8
>> 2 00:00 0.69 Rfd1 Rfd8
>> 2+ 00:00 0.70 Rc1 Rfd8
>> 2 00:00 0.75 Rc1 Nc4
>> 3 00:00 0.82 Rc1 Nc4 a4
>> 3+ 00:00 0.83 Rfd1 Rfd8 Ng5
>> 3 00:00 0.92 Rfd1 Nc4 Rd7
>> 3+ 00:00 0.93 Re1 Rfd8 Rxd8+ Rxd8 Qxe7
>> 3 00:00 1.03 Re1 Rfe8 Qe4
>> 4- 00:00 0.61 Re1 Rfe8 Qe4 Bxa3
>> 4 00:00 0.52 Re1 Rfe8 Qe3 Nc4
>> 4+ 00:00 0.53 Rfd1 Nc4 Rd7 Nxa3
>> 4+ 00:00 0.73 Rfd1 Nc4 Rd7 Nxa3
>> 4 00:00 0.79 Rfd1 Rfd8 Qe4 Nc4
>> 4+ 00:00 0.80 Rc1 Nc4 Nd2 Nxb2
>> 4 00:00 0.80 Rc1 Bc5 Qe4 Rfe8
>> 5 00:00 0.81 Rc1 Nc4 Ne5 Qb7 Rd7
>> 6 00:00 0.67 Rc1 Bc5 Qe4 Nb3 Re1 Rfd8
>> 6+ 00:00 0.68 Qe4 Nc4 Rc1 Rfd8 Rxd8+ Bxd8 Qe8+ Kh7 Qf8 Bf6
>> 6 00:00 0.87 Qe4 Qc2 Qxe7 Nc6 Qg5 Qxb2
>> 7 00:00 0.78 Qe4 Qc4 Qf5 Qb3 Rb1 Rcd8 Rb5
>> 7+ 00:00 0.79 Rc1 Bc5 Qe4 Nb3 Re1 Rfd8 Qf5
>> 7 00:01 0.88 Rc1 Qb7 Rcd1 Rfe8 Rd7 Bd6 Ne5 Rxe5
>> 8 00:01 0.78 Rc1 Qxc1+ Bxc1 Rxc1+ Ne1 Bxa3 Qe4 Rc4 Qe3 Bc5
>> 9 00:03 0.77 Rc1 Qxc1+ Bxc1 Rxc1+ Ne1 Bxa3 Qe4 Nc4 Rh5 Rd8 Qh7+ Kf8 Qe4
>> 9+ 00:04 0.78 Qe4 Qc2 Qxe7 Nc6 Qd6 Qxb2 Rd2 Rfd8 Qxd8+ Nxd8
>> 9 00:05 0.93 Qe4 Qc4 Rd4 Qc2 Qxe7 Nc6 Qe4 Qxb2 Rd6
>> 9+ 00:08 0.94 Nd2 Rfd8 Qg4 g6 Rxd8+ Qxd8 Ne4 Rc2 Rd1 Rxb2 Rxd8+ Bxd8
>> 9 00:09 0.99 Nd2 Bd6 Qg4 Bxh2+ Kh1 f5 Rxf5 Rxf5 Qxf5 Nc4 Nxc4 Qxc4
>>10 00:15 1.34 Nd2 Bd6 Ne4 Bxh2+ Kh1 Qc2 Rd2 Qc7 Bxg7 Nc4 Qg4 Nxd2
>>11 00:33 1.28 Nd2 Rfd8 Qg4 g6 Qh3 f6 Qe6+ Kf8 Bxf6 Rxd5
>>11+ 00:40 1.29 Bxg7 Kxg7 Ne5 Qb7 Qg4+ Kh8 Qh5+
>>11+ 00:42 1.49 Bxg7 Kxg7 Ne5 Qb7 Qg4+ Kh8 Qh5+
>>11 00:47 1.66 Bxg7 Kxg7 Ne5 Rfd8
>>12 01:00 1.27 Bxg7 Kxg7 Ne5 Rfd8
>>12+ 01:13 1.28 Nd2 Nc6 Qg4 Bf6 Bxf6 Rfe8
>>12 01:30 1.31 Nd2 Nc4 Nxc4
>>13 02:59 1.45 Nd2 Rcd8
>>14 09:03 1.18 Nd2 Rcd8
>
>
>Likely because Bxg7 isn't winning? I don't see it.
>
>1. Bxg7 Kxg7 2. Ne5 Rfd8 3. Qg4+ Kf8 4. Qf5 f6 5. Nd7+ Rxd7 6. Rxd7 Qe5 7. Qh3
>Rc7 *
I let Crafty burn a while and it doesn't like Bg7 particularly either. It
thinks the score after Bg7 is about the same as the score for other moves by
white. I noticed in the PV after Bxg7 that it saw this as two pieces for a rook
and pawn, which it will not like much, ever, unless it finds something
tactically farther down the line:
11-> 23.98 0.65 1. ... Kxg7 2. Ne5 Rfd8 3. Qg4+ Kf8
4. Nd7+ Rxd7 5. Rxd7 Qc3 6. Rxa7 Bxa3
7. Qd7 Qc4
12 1:15 0.62 1. ... Kxg7 2. Ne5 Rfd8 3. Qg4+ Kf8
4. Nd7+ Rxd7 5. Rxd7 Qc4 6. Qh3 Qh4
7. Qf5 Qf6 8. Qd3
12-> 1:19 0.62 1. ... Kxg7 2. Ne5 Rfd8 3. Qg4+ Kf8
4. Nd7+ Rxd7 5. Rxd7 Qc4 6. Qh3 Qh4
7. Qf5 Qf6 8. Qd3
13 4:17 0.92 1. ... Kxg7 2. Ne5 Rfd8 3. Qh5 Bf6
4. Nd7 Rxd7 5. Qg4+ Kf8 6. Rxd7 Qc4
7. Qf3 Qc6 8. Qf5
13-> 4:37 0.92 1. ... Kxg7 2. Ne5 Rfd8 3. Qh5 Bf6
4. Nd7 Rxd7 5. Qg4+ Kf8 6. Rxd7 Qc4
7. Qf3 Qc6 8. Qf5
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