Author: Rob Basham
Date: 06:33:22 10/09/05
Go up one level in this thread
On October 08, 2005 at 17:45:14, Heiner Marxen wrote: >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 Thanks... How did the composer make this mate in 4 problem without a computer....? :-) Rob
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