Author: Robert Hyatt
Date: 19:35:50 03/31/04
Go up one level in this thread
On March 31, 2004 at 11:09:26, Mihaly Szalai wrote:
>From the game Chekhov - Sorokin, Protvino,1988.
>
>[D]5k2/6p1/2p5/2P2PKP/3B4/1b6/1P6/8 w - - 0 52
>
>White is two pawns up but there are opposite color bishops.
>Both 52.f6 and 52.h6 are bad, however 52.Bxg7! wins.
>
>You should show it to your engine, I'm sure that quite a few
>will find it.
>
>Thanks
>Mihaly
Takes Crafty about two seconds on my dual xeon to find the move, about a half a
minute to see a winning score:
13-> 1.24 0.99 1. f6 gxf6+ 2. Kxf6 Kg8 3. h6 Kh7 4.
Be3 Bc2 5. Ke6 Bb3+ 6. Kd6 Bd5 7. Bg5
Kg6 8. Bf4 Kh7 (s=5)
14 1.51 1.02 1. f6 gxf6+ 2. Kxf6 Kg8 3. h6 Kh7 4.
Be3 Bc2 5. Ke6 Bb3+ 6. Kd6 Bd5 7. Bg5
Be4 8. b4 Bf3 9. Ke6 (s=4)
14 2.58 1.04 1. Bxg7+ Kxg7 2. f6+ Kh7 3. Kf4 Kg8
4. Ke5 Kf7 5. h6 Kg6 6. Kd6 Kxf6 7.
Kxc6 Kg6 8. Kd6 Kxh6
14-> 2.58 1.04 1. Bxg7+ Kxg7 2. f6+ Kh7 3. Kf4 Kg8
4. Ke5 Kf7 5. h6 Kg6 6. Kd6 Kxf6 7.
Kxc6 Kg6 8. Kd6 Kxh6 (s=6)
15 3.21 1.20 1. Bxg7+ Kxg7 2. f6+ Kf7 3. Kf5 Be6+
4. Ke5 Bd5 5. b4 Bc4 6. h6 Kg6 7. Kd6
Kxh6 8. Kxc6 Kg6 9. f7 Kxf7 10. b5
(s=5)
15-> 5.19 1.20 1. Bxg7+ Kxg7 2. f6+ Kf7 3. Kf5 Be6+
4. Ke5 Bd5 5. b4 Bc4 6. h6 Kg6 7. Kd6
Kxh6 8. Kxc6 Kg6 9. f7 Kxf7 10. b5
(s=6)
16 5.91 1.33 1. Bxg7+ Kxg7 2. f6+ Kg8 3. Kf5 Bf7
4. h6 Kh7 5. Ke5 Kxh6 6. Kd6 Bd5 7.
b4 Bf7 8. Kxc6 Kg5 9. b5 Kxf6 (s=5)
16-> 10.54 1.33 1. Bxg7+ Kxg7 2. f6+ Kg8 3. Kf5 Bf7
4. h6 Kh7 5. Ke5 Kxh6 6. Kd6 Bd5 7.
b4 Bf7 8. Kxc6 Kg5 9. b5 Kxf6 (s=7)
17 11.69 1.23 1. Bxg7+ Kxg7 2. f6+ Kg8 3. Kf5 Bf7
4. h6 Kh7 5. Ke5 Kxh6 6. Kd6 Bd5 7.
b4 Kg6 8. f7 Kxf7 9. b5 Kf6 10. bxc6
<HT> (s=6)
17-> 20.15 1.23 1. Bxg7+ Kxg7 2. f6+ Kg8 3. Kf5 Bf7
4. h6 Kh7 5. Ke5 Kxh6 6. Kd6 Bd5 7.
b4 Kg6 8. f7 Kxf7 9. b5 Kf6 10. bxc6
<HT> (s=7)
18 22.06 1.23 1. Bxg7+ Kxg7 2. f6+ Kg8 3. Kf5 Bf7
4. h6 Kh7 5. Ke5 Kxh6 6. Kd6 Bd5 7.
b4 Kg6 8. f7 Kxf7 9. b5 Kf6 10. bxc6
<HT> (s=6)
18-> 37.11 1.23 1. Bxg7+ Kxg7 2. f6+ Kg8 3. Kf5 Bf7
4. h6 Kh7 5. Ke5 Kxh6 6. Kd6 Bd5 7.
b4 Kg6 8. f7 Kxf7 9. b5 Kf6 10. bxc6
<HT> (s=9)
19 39.63 +1 1. Bxg7+!!
19 42.46 +3 1. Bxg7+!!
19 49.90 2.95 1. Bxg7+ Kxg7 2. f6+ Kh7 3. Kf4 Kh6
4. Ke5 Kg5 5. Kd6 Kxf6 6. Kxc6 Ke6
7. h6 Bd5+ 8. Kb6 Kf6 9. c6 Be6 10.
Kb7 Bd5 11. b4 Ke5 (s=8)
19-> 1:21 2.95 1. Bxg7+ Kxg7 2. f6+ Kh7 3. Kf4 Kh6
4. Ke5 Kg5 5. Kd6 Kxf6 6. Kxc6 Ke6
7. h6 Bd5+ 8. Kb6 Kf6 9. c6 Be6 10.
Kb7 Bd5 11. b4 Ke5 (s=7)
20 1:29 3.33 1. Bxg7+ Kxg7 2. f6+ Kh7 3. Kf4 Kh6
4. Ke5 Kg5 5. Kd6 Kxf6 6. Kxc6 Ke6
7. h6 Bc2 8. Kb7 Kf6 9. b4 Ke5 10.
c6 Be4 11. b5 <HT> (s=6)
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