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Subject: Re: Variant

Author: John Merlino

Date: 11:27:27 11/24/02

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On November 24, 2002 at 14:24:42, Alastair Scott wrote:

>An interesting variant is with a black pawn on a6:
>
>[D]1r4r1/3q1npk/p1b1pbnp/Rp1p4/1N1P3P/2PQ1pP1/1K3B2/5B1R w - - 0 1
>
>Methinks this would make the time to find much shorter as it stops the mass
>sacrifice of both Black Rooks and Queen, pushing the mate back ... ?

Definitely easier. Chessmaster 9000 announces Mate in 9 in less than one second:

Time	Depth	Score	Positions	Moves
0:00	1/3	-2.37	1417		1.h5 Ne5 2.hxg6+ Nxg6 3.Rxa6
0:00	1/4	-1.81	9580		1.h5 Nh8 2.hxg6+ Nxg6 3.Qxf3 Ra8
					4.Nxa6
0:00	1/4	0.00	12355		1.Qxg6+ Kxg6 2.Bd3+ Kh5 3.g4+ Kxg4
					4.Rg1+ Kf4 5.Bg3+ Kg4 6.Bf2+
0:00	1/5	0.00	16072		1.Qxg6+ Kxg6 2.Bd3+ Kh5 3.g4+ Kxg4
					4.Rg1+ Kf4 5.Bg3+ Kg4 6.Bf2+
0:00	1/6	Mate09	37658		1.Qxg6+ Kxg6 2.Bd3+ Kh5 3.g4+ Kxg4
					4.Rg1+ Kh3 5.Bf1+ Kh2 6.Bg3+ Kxg1
					7.Bh3 f2 8.Ra1+ f1=Q 9.Rxf1#
0:01	1/7	Mate09	57197		1.Qxg6+ Kxg6 2.Bd3+ Kh5 3.g4+ Kxg4
					4.Rg1+ Kh3 5.Bf1+ Kh2 6.Bg3+ Kxg1
					7.Bh3 f2 8.Ra1+ f1=Q 9.Rxf1#

jm



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