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Subject: Re: Testposition - Bishop against 3 pawns

Author: John Merlino

Date: 12:04:11 02/28/01

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On February 28, 2001 at 06:23:35, Sune Larsson wrote:

>
>  [D]8/5k2/7P/3K1PP1/8/8/1b6/8 b - - 0 1
>
>  This position happened in Minev-Dukanovic, Beograd 1977.
>  Black played 1.-Bc3? and lost after 2.h7! Kg7 3.Ke6!
>  But the draw was there with 1.-Bc1! 2.h7 Kg7 3.g6 Bb2 4.Ke6 Kh8!! =
>
>  Test: The above position is a draw after 1.-Bc1 and should be
>        evaluated close to 0.00.
>
>  Sune

CM8000 sees the right moves (although it changes the order of Bb2 and Kh8), but
it doesn't see the draw:

Time	Depth	Score	Positions	Moves
0:00	6/7	2.31	29888		1...Bc3 2. g6+ Ke7 3. Kc4 Bf6 4.
					Kd3 Kf8 5. Ke4
0:00	7/8	2.25	91765		1...Ke7 2. g6 Bf6 3. Ke4 Kf8 4.
					Kf4 Kg8 5. h7+ Kg7
0:01	8/9	2.95	145661		1...Bc3 2. Kd6 Kg8 3. g6 Bf6 4.
					Ke6 Bg5 5. h7+ Kh8 6. Kf7 Bh6
0:02	9/10	2.46	270533		1...Bc1 2. h7 Kg7 3. g6 Bb2 4.
					Kd6 Ba1 5. Ke6 Kh8 6. Ke7 Kg7
0:02	10/11	2.37	327336		1...Bc1 2. h7 Kg7 3. g6 Bb2 4.
					Kd6 Ba1 5. Ke7 Kh8 6. Ke8 Bd4 7.
					Kf8 Bg7+ 8. Kf7
0:03	11/12	2.37	430506		1...Bc1 2. h7 Kg7 3. g6 Bb2 4.
					Kd6 Ba1 5. Ke7 Kh8 6. Ke8 Bd4 7.
					Kf8 Bg7+ 8. Kf7
0:05	12/13	2.34	618202		1...Bc1 2. h7 Kg7 3. g6 Kh8 4.
					f6 Bb2 5. f7 Ba3 6. Ke6 Kg7 7.
					Ke5 Bb4 8. Kf5 Bf8
0:07	13/14	2.28	878158		1...Bc1 2. h7 Kg7 3. g6 Kh8 4.
					f6 Bb2 5. f7 Ba3 6. Ke6 Kg7 7.
					Ke5 Bb4 8. Ke4 Bd6 9. Kf5
0:10	14/15	2.34	1267609		1...Bc1 2. h7 Kg7 3. g6 Kh8 4.
					f6 Bb2 5. f7 Ba3 6. Ke6 Kg7 7.
					Ke5 Bb4 8. Ke4 Bd6 9. Kf5 Bf8
0:15	15/16	2.34	1822879		1...Bc1 2. h7 Kg7 3. g6 Kh8 4.
					f6 Bb2 5. f7 Ba3 6. Ke6 Kg7 7.
					Ke5 Bb4 8. Kd5 Bf8 9. Ke4 Ba3 10.
					Kf5 Bf8
0:22	16/17	2.34	2594405		1...Bc1 2. h7 Kg7 3. g6 Kh8 4.
					f6 Bb2 5. f7 Ba3 6. Ke6 Kg7 7.
					Ke5 Bb4 8. Kd5 Bf8 9. Ke4 Ba3 10.
					Kf5 Bf8
0:32	17/18	2.20	3667632		1...Bc1 2. h7 Kg7 3. g6 Kh8 4.
					f6 Bb2 5. f7 Ba3 6. Ke6 Kg7 7.
					Ke5 Bb4 8. Ke4 Bd6 9. Kf5 Bf8 10.
					Kf4 Ba3 11. Kg5 Bf8
0:44	18/19	2.14	5089720		1...Bc1 2. h7 Kg7 3. g6 Kh8 4.
					f6 Bb2 5. f7 Ba3 6. Ke6 Kg7 7.
					Ke5 Bb4 8. Ke4 Bd6 9. Kd5 Bf8 10.
					Kc6 Ba3 11. Kd7 Bf8 12. Ke8
1:00	19/20	2.14	6888911		1...Bc1 2. h7 Kg7 3. g6 Kh8 4.
					f6 Bb2 5. f7 Ba3 6. Ke6 Kg7 7.
					Ke5 Bb4 8. Ke4 Bd6 9. Kd5 Bf8 10.
					Kc6 Ba3 11. Kd7 Bf8 12. Ke8

jm

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