Richard Becker (USA)
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1.Nb4+ ( 1.Qg2+? Ka1 2.Qg7+ Qb2 3.Qg1+ Qb1 4.Qd4+ Qb2 5.Qd1+ Qb1 = ) 1...Ka1 ( 1...Kb2 2.Qh8+ Kc1 3.Qh6+ Kb2 4.Qd2+ +- ) 2.Qh8+ ( 2.Kb6+? Kb2 3.Qf3 Kc1 ( Also 3...Qh7 4.Qe2+ Kc3 5.Qe3+ Kb2 6.Qd2+ Kb3 7.Qd1+ Kc3 8.Qc1+ Kd4 = ) 4.Kc4 b5+ = ) 2...Qb2 3.Qh1+ Qb1 4.Qa8! b5+ ( 4...Qb2 5.Kb5+ Kb1 6.Qh1+ Qc1 7.Qe4+ Ka1 8.Qa8+ Kb1 9.Qa2# ) ( 4...Qd1+ 5.Ka3 Kb1 6.Qe4+ Kc1 7.Qc4+ Kd2 8.Qd3+ Ke1 9.Nc2+ +- ) 5.Kxb5+ Kb2 6.Qf3 ( 6.Qh8+? Kc1 7.Qh1+ Kb2 8.Qf3 loss of time ) 6...Qh7 ( 6...Kc1 7.Kc4! +- ) 7.Qe2+(Qf2+) Kc3 8.Qe3+(Qe1+) Kb2 9.Qd2+ ( 9.Nd3+? Kb3 10.Nb4+ Kb2 loss of time ) 9...Kb3 10.Qd1+ Kb2 ( 10...Kc3 11.Qc1+ Kd4 ( 11...Kb3 12.Qc4+ Kb2 13.Nd3+ +- ) 12.Qc5+ Ke4 13.Qc2+ +- ) 11.Nd3+ Kc3 12.Qa1+! Kd2 13.Qe1+ Kc2 14.Qc1+ wins The white Queen plays to all four corners.
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