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Subject: Stale Mate......and other stories...........

Author: Christopher Conkie

Date: 06:45:09 06/22/05

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Good Afternoon Gerold, :-)

Stalemate positions are very interesting and can be used as an "identikit" for
engines.

It never ceases to amaze me how engines just don't say "this is a draw".

Here is a nice test position for you to try.......it is a dead draw.

[D]R7/P6p/4k2p/7P/8/8/4K3/r7 b - - 0 1

But here is stalemate.......

[D]8/8/3p3P/1p1Pp2p/1P1kP2P/3P4/3K4/8 b - - 0 1

InmiChess 3.05:
   1	00:00	           0	0	+M1	Kxd3+
   2	00:00	           0	0	+M1	Kxd3+
   3	00:00	           0	0	+M1	Kxd3+
   4	00:00	           0	0	+M1	Kxd3+
   5	00:00	           0	0	+M1	Kxd3+
   6	00:00	           0	0	+M1	Kxd3+
   7	00:00	           0	0	+M1	Kxd3+
   8	00:00	           0	0	+M1	Kxd3+
   9	00:00	           0	0	+M1	Kxd3+
  10	00:00	           0	0	+M1	Kxd3+
  11	00:00	           0	0	+M1	Kxd3+
  12	00:00	           0	0	+M1	Kxd3+
  13	00:00	           0	0	+M1	Kxd3+
  14	00:00	           0	0	+M1	Kxd3+
  15	00:00	           0	0	+M1	Kxd3+
  16	00:00	           0	0	+M1	Kxd3+
  17	00:00	           0	0	+M1	Kxd3+
  18	00:00	           0	0	+M1	Kxd3+
  19	00:00	           0	0	+M1	Kxd3+
  20	00:00	           0	0	+M1	Kxd3+
  21	00:00	           0	0	+M1	Kxd3+
  22	00:00	           0	0	+M1	Kxd3+
  23	00:00	           0	0	+M1	Kxd3+
  24	00:00	           0	0	+M1	Kxd3+
  25	00:00	           0	0	+M1	Kxd3+

Skaki 1.22 J.A:
   1	00:00	          61	61	-0.43	e2e4
   2	00:00	         308	308	+1.49	e2e4 g8f6
   3	00:00	       1.094	1.094	-1.49	f2f3 e7e5 b1c3
   4	00:00	       7.609	190.225	-1.16	h2h4 e7e5 b1c3 d7d5
   5	00:00	      10.873	181.216	-0.60	h2h4 e7e5 e2e4 f8e7 b1c3 e7h4
   6	00:00	      26.059	186.135	+0.45	h2h4 e7e5 e2e4 f8e7 d1g4 d7d5 g4g7
   7	00:00	      74.685	196.539	-0.81	h2h4 e7e5 d2d3 f8e7 e2e4 e7h4 c1e3
   8	00:01	     262.144	183.317	-0.43	h2h4 e7e5 d2d3 f8e7 e2e4 d7d6 b1c3 e7h4
   8	00:02	     343.261	180.663	-0.43	h2h4 e7e5 d2d3 f8e7 e2e4 d7d6 b1c3 e7h4
   9	00:05	     917.504	174.762	-0.19	dxd4 d5
   9	00:08	   1.572.864	184.825	-0.22	d2d3 b8c6 c1f4 g7g5 f4g5 f7f6 e2e4 g8h6
g5f4
   9	00:15	   3.032.972	192.325	-0.22	d2d3 b8c6 c1f4 g7g5 f4g5 f7f6 e2e4 g8h6
g5f4

Let's try something new.....

Scorpio 1.2:
   1	00:00	           0	0	 0.00	Kxd5

Romichess P1a2:
   1	00:00	          21	21	-0.48	c7c5
   2	00:00	          93	93	+0.01	Kxd4
   3	00:00	         282	282	-0.57	d7d5
   4	00:00	       1.681	1.681	-0.07	Kxd4
   5	00:00	       5.271	5.271	-0.39	d7d5 g1f3 c8f5 f3d4 e7e6
   6	00:00	      21.478	2.147.800	-0.03	Kxd4
   7	00:00	      50.544	1.263.600	-0.42	Kxd4
   8	00:00	     179.122	1.194.146	-0.08	Kxd4
   9	00:00	     405.766	1.308.922	-0.27	Kxd4
  10	00:01	   1.626.172	1.311.429	-0.13	Kxd4
  11	00:03	   3.607.254	1.321.338	-0.32	Kxd4

Confused? You will be......when we release all our findings.

Some of the things we are seeing make you go.......hmmmmm.

They should write a song about it.

:-)

Christopher



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