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Subject: Re: Mate in 9

Author: Dann Corbit

Date: 20:28:31 06/17/02

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On June 17, 2002 at 20:16:01, John Merlino wrote:

>Here's an amusing little Mate in 9 King chase that I had when testing
>Chessmaster 9000:
>
>[D]r6r/ppp1bQpp/2k1B1q1/4P3/4p3/2P1B3/PP3P1P/2K2R2 w - - 0 20
>
>Chessmaster announces Mate in 10 in three seconds on my PIII-600, then switches
>to Mate in 9 after ten seconds:
>
>Time	Depth	Score	Positions	Moves
>0:00	1/3	5.29	2701		20.Qxe7 b6 21.Qd7+ Kb7 22.Bd5+
>					Kb8 23.Bxa8 Kxa8 24.Qxc7
>0:00	1/3	5.65	5976		20.Rd1 b6 21.Qxe7 Kb7 22.Bd5+ Kb8
>					23.Bxa8 Kxa8 24.Qxc7
>0:00	1/4	5.19	11659		20.Rd1 b6 21.Qxe7 Rhd8 22.Rxd8
>					Rxd8 23.Qxd8 Qxe6 24.Qa8+ Kb5 25.Qxe4
>					Qxa2 26.Qxh7
>0:01	2/5	14.85	74968		20.Rd1 b6 21.Bd5+ Kb5 22.Qxe7 Qd6
>					23.exd6 Raf8 24.Bxe4
>0:01	2/6	15.35	145320		20.Rd1 b6 21.Bd5+ Kb5 22.Qxe7 Qd6
>					23.exd6 c6 24.c4+ Ka6 25.Bxc6
>0:03	3/7	Mate10	374294		20.Rd1 b6 21.Bd5+ Kb5 22.Bc4+ Ka5
>					23.Qxe7 c5 24.Qd7 a6 25.b4+ cxb4
>					26.Rd5+ b5 27.Rxb5+ Ka4 28.Rxb4+
>					Ka5 29.Qa4#
>0:10	3/8	Mate09	1098190		20.Rd1 b6 21.Bd5+ Kb5 22.Bc4+ Ka5
>					23.Qd5+ Bc5 24.Bxc5 Qg5+ 25.Kc2
>					Qd2+ 26.Rxd2 bxc5 27.Qxc5+ Ka4
>					28.Qb4#
>
>Since four of the nine moves are not checking moves, can anybody else do better?

Chest output:

r6r/ppp1bQpp/2k1B1q1/4P3/4p3/2P1B3/PP3P1P/2K2R2 w - - acn 143757061; acs 1360;
bm Rd1; ce 32752; dm 8; pv Rd1 b6 Bd5+ Kd7 Bb7+ Qd6 exd6 cxd6 Bf4 Rhf8 Rxd6+ Kc7
Qxe7+ Kb8 Rf6#;



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