Problem Display
PID: 102625 (7B/7P/8/1K5B/8/8/1Nk5/5N2 w - - 0 1)

Braithwaite, Kenneth Holmes

Chess Canada Echecs, 1981

7B/7P/8/1K5B/8/8/1Nk5/5N2

#4

6 + 1


6490 yacpdb 2009

SOLUTION


  • SOUND
  • Keys
    • 1.Sd3!
      • 1...Kb1
        • 2.Ba1
          • 2...Kxa1
            • 3.h8Q+
              • 3...Kb1
                • 4.Qb2#
              • 3...Ka2
                • 4.Qb2#
          • 2...Ka2
            • 3.h8Q
              • threat
                • 4.Qb2#
              • 3...Kb1
                • 4.Qb2#
              • 3...Ka3
                • 4.Qb2#
              • 3...Kb3
                • 4.Qb2#
          • 2...Kc2
            • 3.h8Q
              • 3...Kb1
                • 4.Qb2#
              • 3...Kb3
                • 4.Qb2#
              • 3...Kxd3
                • 4.Qh7#
      • 1...Kb3
        • 2.Ba1
          • 2...Ka2
            • 3.h8Q
              • threat
                • 4.Qb2#
              • 3...Kb1
                • 4.Qb2#
              • 3...Ka3
                • 4.Qb2#
              • 3...Kb3
                • 4.Qb2#
          • 2...Kc2
            • 3.h8Q
              • 3...Kb1
                • 4.Qb2#
              • 3...Kb3
                • 4.Qb2#
              • 3...Kxd3
                • 4.Qh7#
          • 2...Ka3
            • 3.h8Q
              • threat
                • 4.Qb2#
              • 3...Ka2
                • 4.Qb2#
              • 3...Kb3
                • 4.Qb2#
      • 1...Kxd3
        • 2.Ba1
          • 2...Kc2
            • 3.h8Q
              • 3...Kb1
                • 4.Qb2#
              • 3...Kc1
                • 4.Qb2#
              • 3...Kb3
                • 4.Qb2#
              • 3...Kd3
                • 4.Qh7#
          • 2...Ke4
            • 3.h8Q
              • 3...Kd3
                • 4.Qh7#
              • 3...Kf4
                • 4.Qe5#
              • 3...Kd5
                • 4.Qe5#
              • 3...Kf5
                • 4.Qe5#

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