MESON Chess Problem Database

Problem Display
PID: 42072 (k7/1r6/2Q4n/8/8/5R2/8/2n4K w - - 0 1)

Loyd, Sam

Le Sphinx, 1866

k7/1r6/2Q4n/8/8/5R2/8/2n4K

#3

3 + 4

5206 Sam Loyd and His Chess Problems 1913

SOLUTION

  • SOUND
  • Sets
    • 1...Sb3
      • 2.Rxb3
        • threat
          • 3.Qxb7#
        • 2...Ka7
          • 3.Qxb7#
        • 2...Kb8
          • 3.Qxb7#
    • 1...Sf7
      • 2.Rxf7
        • threat
          • 3.Qxb7#
        • 2...Ka7
          • 3.Qxb7#
        • 2...Kb8
          • 3.Qxb7#
  • Tries
    • 1.Rb3?
      • threat
        • 2.Qxb7#
      • 1...Ka7
        • 2.Qxb7#
      • 1...Kb8
        • 2.Qxb7#
      • 1...Sxb3!
    • 1.Rf7?
      • threat
        • 2.Qxb7#
      • 1...Ka7
        • 2.Qxb7#
      • 1...Kb8
        • 2.Qxb7#
      • 1...Sxf7!
    • 1.Qa6+?
      • 1...Ra7
        • 2.Rf8#
        • 2.Qc8#
      • 1...Kb8!
    • 1.Qc8+?
      • 1...Rb8
        • 2.Ra3#
        • 2.Qa6#
      • 1...Ka7!
  • Keys
    • 1.Qd5!
      • threat
        • 2.Ra3+
          • 2...Kb8
            • 3.Qd8#
        • 2.Rf8+
          • 2...Ka7
            • 3.Qa5#
      • 1...Ka7
        • 2.Qa5+
          • 2...Kb8
            • 3.Rf8#
      • 1...Kb8
        • 2.Qd8+
          • 2...Ka7
            • 3.Ra3#
      • 1...Sb3
        • 2.Rxb3
          • threat
            • 3.Qxb7#
          • 2...Ka7
            • 3.Qxb7#
          • 2...Kb8
            • 3.Qxb7#
      • 1...Sd3
        • 2.Rf8+
          • 2...Ka7
            • 3.Qa5#
      • 1...Sf5
        • 2.Ra3+
          • 2...Kb8
            • 3.Qd8#
      • 1...Sf7
        • 2.Rxf7
          • threat
            • 3.Qxb7#
          • 2...Ka7
            • 3.Qxb7#
          • 2...Kb8
            • 3.Qxb7#

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