Author: Mike Byrne
Date: 17:51:58 09/03/02
Go up one level in this thread
On September 03, 2002 at 20:00:53, Slater Wold wrote:
>On September 03, 2002 at 19:35:06, John Merlino wrote:
>
>>On September 03, 2002 at 18:59:54, Slater Wold wrote:
>>
>>>[D]4rrk1/p4p2/1b1Q1n1p/4n1p1/3pb3/1P2P1PN/PB1R1P1P/3R2K1 b - - 0 23
>>>
>>>
>>>Can you find Re6? And it wins, not draws!!
>>
>>Chessmaster 9000, on a humble PIII-600, finds it in 3:16. However, it was pretty
>>happy with Nf3+ before that, so it might also win...
>>
>>23... Nf3+
>>24. Kf1 (forced) Nxh2+
>>25. Ke1 Re6 (NOW Re6)
>>
>>Time Depth Score Positions Moves
>>0:00 1/3 0.32 2563 23...Nf3+ 24.Kf1 Re6 25.Qb4 Nxd2+
>> 26.Qxd2
>>0:00 1/4 0.15 5091 23...Nf3+ 24.Kf1 Nxd2+ 25.Rxd2
>> Re6 26.Qb4 dxe3
>>0:00 1/4 0.11 5812 23...Re6 24.Qb4 a5 25.Qb5 Nf3+
>> 26.Kf1 Nxd2+ 27.Rxd2 dxe3
>>0:00 1/5 0.11 11260 23...Re6 24.Qb4 a5 25.Qb5 Nf3+
>> 26.Kf1 Nxd2+ 27.Rxd2 dxe3
>>0:00 1/5 -0.04 17932 23...Nf3+ 24.Kf1 Nxh2+ 25.Ke2 Bf3+
>> 26.Kd3 Re6 27.Qb4 dxe3
>>0:00 1/6 -0.37 40593 23...Nf3+ 24.Kf1 Nxh2+ 25.Ke2 Re6
>> 26.Qb4 dxe3 27.fxe3 Bf3+ 28.Kd3
>> Bxd1 29.Rxd1 Rxe3+ 30.Kc2 Rxg3
>> 31.Bxf6 Rxh3
>>0:02 1/7 -0.56 167791 23...Nf3+ 24.Kf1 Nxh2+ 25.Ke1 Nf3+
>> 26.Ke2 Re6 27.Qa3 Nxd2 28.Rxd2 Bf5
>>0:06 1/8 -0.73 436350 23...Nf3+ 24.Kf1 Nxh2+ 25.Ke1 Re6
>> 26.Qb4 Nf3+ 27.Kf1 Nxd2+ 28.Qxd2
>> dxe3 29.fxe3 Ng4
>>0:18 1/9 -0.73 1396122 23...Nf3+ 24.Kf1 Nxh2+ 25.Ke1 Re6
>> 26.Qb4 Nf3+ 27.Kf1 Nxd2+ 28.Qxd2
>> Bf5 29.Ng1 dxe3
>>0:50 1/10 -1.01 3985604 23...Nf3+ 24.Kf1 Nxh2+ 25.Ke1 Re6
>> 26.Qb4 Nf3+ 27.Ke2 Nxd2 28.Rxd2
>> dxe3 29.fxe3 Nd5 30.Qc4 Nxe3
>>2:42 2/11 -1.06 13031332 23...Nf3+ 24.Kf1 Nxh2+ 25.Ke1 Re6
>> 26.Qb4 Nf3+ 27.Ke2 Nxd2 28.Qxd2
>> Bf5 29.Ng1 dxe3 30.fxe3 Bxe3 31.Qxe3
>> Rxe3+ 32.Kxe3
>>3:16 2/11 -1.23 15735481 23...Re6 24.Qa3 Nf3+ 25.Kf1 Nxh2+
>> 26.Kg1 Nf3+ 27.Kf1 Nxd2+ 28.Rxd2
>> dxe3 29.Rd6 Bf5 30.Kg2 e2 31.Rxe6
>> Bxe6
>>
>>jm
>
>Nf3+ doesn't win. Best case it draws, worst case there are several lines that
>lose.
>
>A lot of programs get "confused" on this one, because the material is all wacko.
> :)
Crafty v17.16 SE (2 cpus) [available via email to mfbyrne_pa@msn.com]
White(1): 4rrk1/p4p2/1b1Q1n1p/4n1p1/3pb3/1P2P1PN/PB1R1P1P/3R2K1 b - - 0 23
Black(1): go
clearing hash tables
time surplus 0.00 time limit 100:00 (100:00)
nss depth time score variation (1)
starting thread 1
1-> 0.02 -3.18 1. ... Re6 2. Qb4 dxe3
2 0.02 -3.18 1. ... Re6 2. Qb4 dxe3
2-> 0.02 -3.18 1. ... Re6 2. Qb4 dxe3
3 0.03 ++ 1. ... Re6!!
3 0.03 -2.32 1. ... Re6 2. Qb4 Nf3+ 3. Kf1 Nxd2+
4. Qxd2 dxe3 5. fxe3
3 0.03 ++ 1. ... Nf3+!!
3 0.05 -1.02 1. ... Nf3+ 2. Kf1 Nxd2+ 3. Rxd2 Re6
4. Qb4 dxe3
(2) 3-> 0.05 -1.02 1. ... Nf3+ 2. Kf1 Nxd2+ 3. Rxd2 Re6
4. Qb4 dxe3
4 0.07 -1.02 1. ... Nf3+ 2. Kf1 Nxd2+ 3. Rxd2 Re6
4. Qb4 dxe3
4-> 0.08 -1.02 1. ... Nf3+ 2. Kf1 Nxd2+ 3. Rxd2 Re6
4. Qb4 dxe3
5 0.11 -1.00 1. ... Nf3+ 2. Kf1 Nxh2+ 3. Ke2 Bf3+
4. Kd3 Re6 5. Qb4 Bxd1 6. Rxd1
5-> 0.14 -1.00 1. ... Nf3+ 2. Kf1 Nxh2+ 3. Ke2 Bf3+
4. Kd3 Re6 5. Qb4 Bxd1 6. Rxd1
6 0.24 -0.80 1. ... Nf3+ 2. Kf1 Nxh2+ 3. Ke1 Nf3+
4. Ke2 Re6 5. Qb4 a5 6. Qc4 Nxd2 7.
Rxd2 dxe3 8. fxe3
6-> 0.28 -0.80 1. ... Nf3+ 2. Kf1 Nxh2+ 3. Ke1 Nf3+
4. Ke2 Re6 5. Qb4 a5 6. Qc4 Nxd2 7.
Rxd2 dxe3 8. fxe3
7 0.47 -0.80 1. ... Nf3+ 2. Kf1 Nxh2+ 3. Ke1 Nf3+
4. Ke2 Re6 5. Qb4 a5 6. Qc4 Nxd2 7.
Rxd2 dxe3 8. fxe3
7-> 0.55 -0.80 1. ... Nf3+ 2. Kf1 Nxh2+ 3. Ke1 Nf3+
4. Ke2 Re6 5. Qb4 a5 6. Qc4 Nxd2 7.
Rxd2 dxe3 8. fxe3
8 1.05 -0.65 1. ... Nf3+ 2. Kf1 Nxh2+ 3. Ke1 Nf3+
4. Ke2 Re6 5. Qb4 Nxd2 6. Qxd2 d3+
7. Kf1
8-> 1.36 -0.65 1. ... Nf3+ 2. Kf1 Nxh2+ 3. Ke1 Nf3+
4. Ke2 Re6 5. Qb4 Nxd2 6. Qxd2 d3+
7. Kf1
9 2.72 -0.65 1. ... Nf3+ 2. Kf1 Nxh2+ 3. Ke1 Re6
4. Qa3 Nf3+ 5. Ke2 Nxd2 6. Rxd2 dxe3
7. fxe3
9-> 3.52 -0.65 1. ... Nf3+ 2. Kf1 Nxh2+ 3. Ke1 Re6
4. Qa3 Nf3+ 5. Ke2 Nxd2 6. Rxd2 dxe3
7. fxe3
10 7.24 -0.47 1. ... Nf3+ 2. Kf1 Nxh2+ 3. Ke1 Re6
4. Qa3 Nf3+ 5. Ke2 Nxd2 6. Rxd2 dxe3
7. fxe3 Rc8 8. Bxf6 Rxf6
10-> 10.39 -0.47 1. ... Nf3+ 2. Kf1 Nxh2+ 3. Ke1 Re6
4. Qa3 Nf3+ 5. Ke2 Nxd2 6. Rxd2 dxe3
7. fxe3 Rc8 8. Bxf6 Rxf6
11 46.47 -0.46 1. ... Nf3+ 2. Kf1 Re6 3. Qa3 Nxd2+
4. Rxd2 dxe3 5. fxe3 Bxe3 6. Bxf6 Rxf6+
7. Rf2 Bd3+ 8. Kg2 Be4+ 9. Kg1 Bxf2+
10. Nxf2
11-> 53.69 -0.46 1. ... Nf3+ 2. Kf1 Re6 3. Qa3 Nxd2+
4. Rxd2 dxe3 5. fxe3 Bxe3 6. Bxf6 Rxf6+
7. Rf2 Bd3+ 8. Kg2 Be4+ 9. Kg1 Bxf2+
10. Nxf2
12 1:32 -0.46 1. ... Nf3+ 2. Kf1 Re6 3. Qa3 Nxd2+
4. Rxd2 dxe3 5. fxe3 Bxe3 6. Bxf6 Rxf6+
7. Rf2 Bd3+ 8. Kg2 Be4+ 9. Kg1 Bxf2+
10. Nxf2
12 1:59 -0.45 1. ... Re6 2. Qa3 dxe3 3. fxe3 Bxe3+
4. Kf1 Bxd2 5. Rxd2 Nf3 6. Rf2 Ng4
7. Rxf3 Nxh2+ 8. Kg2 Nxf3 9. Qxa7
(2) 12-> 2:27 -0.45 1. ... Re6 2. Qa3 dxe3 3. fxe3 Bxe3+
4. Kf1 Bxd2 5. Rxd2 Nf3 6. Rf2 Ng4
7. Rxf3 Nxh2+ 8. Kg2 Nxf3 9. Qxa7
13 3:06 -0.45 1. ... Re6 2. Qa3 dxe3 3. fxe3 Bxe3+
4. Kf1 Bxd2 5. Rxd2 Nf3 6. Rf2 Ng4
7. Rxf3 Nxh2+ 8. Kg2 Nxf3 9. Qxa7
(2) 13-> 5:27 -0.45 1. ... Re6 2. Qa3 dxe3 3. fxe3 Bxe3+
4. Kf1 Bxd2 5. Rxd2 Nf3 6. Rf2 Ng4
7. Rxf3 Nxh2+ 8. Kg2 Nxf3 9. Qxa7
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