Author: Heiner Marxen
Date: 14:45:14 10/08/05
Go up one level in this thread
On October 08, 2005 at 13:19:24, John Merlino wrote:
>On October 08, 2005 at 13:17:07, John Merlino wrote:
>
>>On October 07, 2005 at 23:07:51, Rob Basham wrote:
>>
>>>[D]8/6R1/1K6/2P5/8/4k3/Q7/8 w - - 0 1
>Shockingly enough, this is actually a Mate in 4 that takes The King almost 30
>seconds to find on a P4-2.4.
>
>1.Kb5! This is the only move that leads to Mate in 4.
Chest confirms this (in 0.08 seconds). Here is the complete solution tree:
Kb5 Kd3 Qf2 Ke4 Kc4 Ke5 Re7#
Kc3 Rg3#
Re7 Kc3 Qe2 Kb3 Re3#
Kd4 Qc4#
Qd2#
Re2 =*= Qc4#
Qd2#
Re3+ Kd4 Qd2#
Kd4 Qc4#
Qd2#
Kd4 Qe2 Kc3 Rd7 Kb3 Rd3#
Re7 Kb3 Re3#
Kd4 Qc4#
Qd2#
Rg3+ Kd4 Rd3#
Rg4 Kb3 Rg3#
Kd5 Rd7#
Qf2+ Kd3 Rg4 Kc3 Rg3#
Kd5 Qe1 Kd4 Rd7#
Ke4 Kc4 Ke5 Re7#
Ke5 Re7+ Kd5 Qd2#
Kc3 Rg3#
Re7 Kc3 Qe2 Kb3 Re3#
Kd4 Qc4#
Qd2#
Re2 =*= Qc4#
Qd2#
Re3+ Kd4 Qd2#
Kd3 Kb4 Kd4 Qc4#
Qd2#
Re2 Kc3 Qc4#
Kd4 Qc4#
Qd2#
Ke4 Kc4 Ke3 Rf7 Ke4 Qe2#
Ke5 Rf7 Ke4 Qe2#
Ke6 Kd4#
Kf3 Kd4 Kf4 Qf2#
Qf7#
Kf4 Qf2+ =*= Re7#
Kf5 Kd4 Kf4 Qf2#
Qf7#
Kf6 Qf7#
Qf2 Kd3 Rg4 Kc3 Rg3#
Kd5 Qe1 Kd4 Rd7#
Ke5 Re7+ Kd5 Qd2#
Kf3 Kc4 Ke3 Rf7 Ke4 Qe2#
Ke4 Qf2 Ke5 Re7#
Kf4 Qf2+ =*= Re7#
Kf4 Kc4 Ke3 Rf7 Ke4 Qe2#
Ke4 Qf2 Ke5 Re7#
Ke5 Rf7 Ke4 Qe2#
Ke6 Kd4#
Kf3 Kd4 Kf4 Qf2#
Qf7#
Kf5 Kd4 Kf4 Qf2#
Qf7#
Kf6 Qf7#
Qf2+ Ke4 Kc4 Ke5 Re7#
Ke5 Re7+ Kd5 Qd2#
Cheers,
Heiner
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