MESON Chess Problem Database

Problem Display
PID: 199974 (1b6/1kpN4/n1p5/K7/4B3/8/5Q2/8 w - - 0 1)

Sprague, Gordon

The Observer, 1947

(First published on Sun Mar 2 1947)

1b6/1kpN4/n1p5/K7/4B3/8/5Q2/8

#3

4 + 5

15239 Valois Notebooks 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Ka8
      • 2.Bxc6#
    • 1...Kc8
      • 2.Bxc6
        • threat
          • 3.Qf8#
        • 2...Kd8
          • 3.Qf8#
  • Tries
    • 1.Sc5+?
      • 1...Ka7
        • 2.Bxc6
          • threat
            • 3.Sxa6#
          • 2...Sxc5
            • 3.Qxc5#
          • 2...Sb4
            • 3.Sb3#
            • 3.Sd3#
            • 3.Sa4#
            • 3.Se4#
            • 3.Sa6#
            • 3.Se6#
            • 3.Sd7#
      • 1...Ka8
        • 2.Bxc6+
          • 2...Ka7
            • 3.Sxa6#
      • 1...Sxc5!
    • 1.Se5?
      • threat
        • 2.Bxc6+
          • 2...Kc8
            • 3.Qf8#
      • 1...Kc8
        • 2.Kxa6
          • threat
            • 3.Qf8#
          • 2...Kd8
            • 3.Qf8#
        • 2.Bxc6
          • threat
            • 3.Qf8#
          • 2...Kd8
            • 3.Qf8#
      • 1...Ba7
        • 2.Bxc6+
          • 2...Kb8
            • 3.Qf8#
          • 2...Kc8
            • 3.Qf8#
      • 1...Sc5
        • 2.Bxc6+
          • 2...Ka7
            • 3.Qxc5#
          • 2...Kc8
            • 3.Qf8#
      • 1...Sb4!
    • 1.Bxc6+?
      • 1...Kc8
        • 2.Qf8#
      • 1...Kxc6!
  • Keys
    • 1.Qf8!
      • 1...Ka7
        • 2.Bxc6
          • 2...Sb4
            • 3.Qc5#
            • 3.Qf2#
            • 3.Qxb8#
          • 2...Sc5
            • 3.Qxc5#
            • 3.Qxb8#
      • 1...Ka8
        • 2.Qc8
          • 2...Ka7
            • 3.Qxa6#
          • 2...Sb4
            • 3.Qxb8#
          • 2...Sc5
            • 3.Qxb8#
      • 1...Ba7
        • 2.Qa8+
          • 2...Kxa8
            • 3.Bxc6#

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