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Subject: Re: Bad bishop

Author: Kurt Utzinger

Date: 10:58:38 10/18/03

Go up one level in this thread


On October 18, 2003 at 13:52:01, Dan Andersson wrote:

> Obviously so, but you can make a try for more. Was rather wondering about the
>winning attempt 1. Bd2 Bd8 2. Kd4 and if the engines had any opinion on its
>effifacy.
>
>MvH Dan

I think it's a draw although White is of course better. Below
some analysis with various engines:

8/2b4p/k1p1p3/1pP1P1pP/4K1P1/PpB5/1P6/8 w - - 0 1
Rebel 12 CP 5.3 (P4 1.8/32 MB hash)

00:00:00.1	0.28	1	4	h6
00:00:00.1	0.29	1	13	Bd2
00:00:00.1	0.32	2	61	Bd2 h6
00:00:00.1	0.29	3	181	Bd2 h6 Kd4
00:00:00.2	0.28	4	395	Bd2 h6 Kd4 Kb7
00:00:00.2	0.28	4	580	h6
00:00:00.2	0.41	4	710	h6 Ba5 Bxa5 Kxa5 Kd4 b4
00:00:00.2	0.30	5	2583	h6 Ba5 Kd4 Bc7 Bd2
00:00:00.2	0.40	6	4426	h6 Bd8 Bd2 Be7 Kd4 Kb7
00:00:00.3	0.33	7	8073	h6 Bd8 Bd2 Be7 Kd4 Kb7 Be3
00:00:00.3	0.35	8	15167	h6 Bd8 Bd2 Be7 Kd4 Kb7 Be3 Kc7
00:00:00.3	0.36	9	27631	h6 Bd8 Bd2 Be7 Kd4 Kb7 Be3 Kc7 Bd2
00:00:00.4	0.51	10	61667	h6 Bd8 Bd2 Be7 Kd4 Bd8 Be3 Ka5 Kc3 Ka4
00:00:00.5	0.49	11	109711	h6 Bd8 Bd2 Be7 Kd4 Bd8 Be3 Ka5 Kc3 Ka4 Kd4
00:00:00.8	0.49	12	261938	h6 Bd8 Bd2 Be7 Kd4 Bd8 Bc1 Ka5 Ke4 Be7 Bd2+ Ka4
00:00:01.2	0.40	13	463913	h6 Bd8 Bd2 Be7 Kd4 Bd8 Kd3 Bc7 Ke4 Bd8 Kd4 Kb7 Be3 Kc7
Bd2
00:00:02.1	0.49	14	1034755	h6 Bd8 Bd2 Kb7 Kd4 Ka6 Kd3 Bc7 Ke4 Kb7 Bxg5 b4 axb4
Ka8 Kd4 Ka7
00:00:03.9	0.47	15	2284196	h6 Bd8 Kd4 Bc7 Bd2 Ba5 Bxg5 Ka7 Be3 Bc7 g5
00:00:07.3	0.60	16	4622163	h6 Bd8 Bd2 Ka7 Kd4 Ka6 Kd3 Ba5 Bxg5 b4 axb4 Bc7
00:00:12.2	0.67	17	8113703	h6 Bd8 Bd2 Be7 Kd3 Bxc5 Bxg5 Bg1 Kc3 Ka7 Kxb3 Bd4 Bf6
Kb6 g5
00:00:16.8	0.75	17	11794428	Bd2 Bd8 h6 Be7 Kd3 Bxc5 Bxg5 Bg1 Kc3 c5 Kxb3 Kb7
00:00:32.4	0.53	18	22789380	Bd2 Bd8 h6 Kb7 Kd3 Be7 Be3
00:01:04.5	0.38	19	46180406	Bd2 Bd8 h6 Kb7 Kd4 Ka6 Be3 Bc7 Bxg5 Ka5 Be3 Ka6 g5
00:02:07.0	0.34	20	90522874	Bd2 Bd8 h6 Kb7 Kd4
********************************************************************************************
New game
8/2b4p/k1p1p3/1pP1P1pP/4K1P1/PpB5/1P6/8 w - - 0 1

Analysis by Fritz 8: (v80026) P4 1.8/32 MB hash)

1.h6 Bd8 2.Bd2 Be7 3.Kd4 Kb7 4.Be3
  ²  (0.68)   Depth: 7/11   00:00:00  2kN
1.Bd2!
  ²  (0.65)   Depth: 9/15   00:00:00  14kN
  ±  (0.93)   Depth: 23/46   00:04:14  178899kN

(Utzinger, MyTown 18.10.2003)
********************************************************************************************
New game
8/2b4p/k1p1p3/1pP1P1pP/4K1P1/PpB5/1P6/8 w - - 0 1

Analysis by Hiarcs 9: (P4 1.8/32 MB hash)

1.Bd2 h6 2.Be3
  ²  (0.35)   Depth: 1/5   00:00:00
  ²  (0.27)   Depth: 3/6   00:00:00
1.h6 Ba5 2.Kd4 Bd8 3.Bb4 Ba5 4.Kd3 Bc7 5.Bc3 Ba5 6.Bd4 Be1 7.Be3 Bg3 8.Kd4
  ²  (0.42)   Depth: 3/6   00:00:00
  ±  (0.88)   Depth: 17/35   00:00:40  9619kN
1.Bd2 Bd8 2.Kd4 h6 3.Kd3 Be7 4.Bb4 Bd8 5.Kc3 Bc7
  ±  (0.88)   Depth: 17/39   00:01:08  15928kN, tb=16
  ±  (0.91)   Depth: 18/39   00:02:49  39873kN, tb=19

(Utzinger, MyTown 18.10.2003)







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