Author: Jeremiah Penery
Date: 13:25:43 01/30/00
Go up one level in this thread
On January 30, 2000 at 04:07:51, allan johnson wrote:
>On January 30, 2000 at 04:05:13, allan johnson wrote:
>
>>How many programmes out there can find the wonderful rook sac in the position
>>below? Neither Rebel Century nor Fritz 5.32 got close within 10 minutes on
>>a Celeron 433 128 mb ram.It comes from a game between G Sax and J Kestler
>>Nice 1974.
>> [D]r1b1k3/2q1ppb1/2p2n2/3p1PBB/2nP3P/Pp5N/1P2Q1P1/2KR3R b--
>> If someone thinks the sac is suss please let me know.
>>1... Rxa3 2pxa3 Qa5 3Rd3 Qxa3ch 4Kb1 Bxf5. At this point both Rebel and Fritz
>>were acknowledging white's position is lost.
>>I'm not sure of Kestler's rating but I thing this position highlights
>>that tactically computers have still got a way to go.What do others think?
>>Regards Allan
>>P.S Apologies if the diagram doesn't happen.
>Trying again
My modified Crafty finds this in 27.5 seconds. Here's the output:
1 0.00 -2.47 1. ... Bxf5
1 0.00 ++ 1. ... Nxh5!!
1 0.00 -1.71 1. ... Nxh5 2. Qxh5 Bxf5
1-> 0.02 -1.71 1. ... Nxh5 2. Qxh5 Bxf5
2 0.04 -- 1. ... Nxh5
2 0.04 -2.23 1. ... Nxh5 2. Bxe7 Qxe7 3. Qxh5
2-> 0.07 -2.23 1. ... Nxh5 2. Bxe7 Qxe7 3. Qxh5
3 0.08 -1.85 1. ... Nxh5 2. Bxe7 Nxb2 3. Kxb2 Qxe7
4. Qxh5 Rxa3
3-> 0.10 -1.85 1. ... Nxh5 2. Bxe7 Nxb2 3. Kxb2 Qxe7
4. Qxh5 Rxa3
4 0.14 -2.16 1. ... Nxh5 2. Qxh5 Bxf5 3. Rhe1
4-> 0.17 -2.16 1. ... Nxh5 2. Qxh5 Bxf5 3. Rhe1
5 0.22 -2.44 1. ... Nxh5 2. Qxh5 Bxf5 3. Bxe7 Bxh3
4. Rxh3 Qxe7 5. Rxb3
5 0.71 ++ 1. ... Nxa3!!
5 0.96 -1.93 1. ... Nxa3 2. Bf4 Qb6 3. Ng5 Nxh5
4. Qxh5
5-> 1.13 -1.93 1. ... Nxa3 2. Bf4 Qb6 3. Ng5 Nxh5
4. Qxh5
6 1.83 -2.10 1. ... Nxa3 2. Bf4 Qa7 3. Ng5 Nxh5
4. Qxh5
6-> 2.47 -2.10 1. ... Nxa3 2. Bf4 Qa7 3. Ng5 Nxh5
4. Qxh5
7 5.42 ++ 1. ... Nxa3!!
7 7.69 -1.63 1. ... Nxa3 2. Bxf6 Bxf6 3. Qg4 Nc2
4. Qg8+ Kd7 5. Bxf7 Ra1+ 6. Kd2 Rxd1+
7. Rxd1 Bxd4
7 27.50 ++ 1. ... Rxa3!!
7-> 28.16 -1.24 1. ... Rxa3
8 1:02 ++ 1. ... Rxa3!!
8 1:33 -0.55 1. ... Rxa3 2. bxa3 Qa5 3. Rd3 Qxa3+
4. Kb1 Bxf5 5. Rd1 Bxd3+ 6. Rxd3 Nxh5
7. Qxh5
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