Problem Display
PID: 258395 (1B6/5K2/P3Q3/2kp4/8/N7/8/8 w - - 0 1)

Houghton, RW

English Mechanic and World of Science, 1892

(First published on Fri Jun 10 1892)

1B6/5K2/P3Q3/2kp4/8/N7/8/8

#3

5 + 2


15239 Valois Notebooks 2022

SOLUTION


  • SOUND
  • Sets
    • 1...d4
      • 2.Qd6#
  • Tries
    • 1.Bf4?
      • 1...Kd4
        • 2.Qe3#
      • 1...d4
        • 2.Qd6#
      • 1...Kb4!
    • 1.Qe2?
      • threat
        • 2.Qb2
          • 2...Kc6
            • 3.Qb5#
          • 2...d4
            • 3.Qb5#
      • 1...Kd4
        • 2.Be5+
          • 2...Kc5
            • 3.Qb5#
      • 1...Kb4!
    • 1.Qe5?
      • threat
        • 2.Qb2
          • 2...Kc6
            • 3.Qb5#
          • 2...d4
            • 3.Qb5#
      • 1...Kb6
        • 2.Qc7+
          • 2...Kxa6
            • 3.Qa7#
        • 2.Qxd5
          • 2...Kxa6
            • 3.Qb5#
      • 1...Kb4!
    • 1.Qf6?
      • threat
        • 2.Qb2
          • 2...Kc6
            • 3.Qb5#
          • 2...d4
            • 3.Qb5#
      • 1...d4
        • 2.Qd6#
      • 1...Kb4!
    • 1.Qe7+?
      • 1...Kb6
        • 2.Qb4+
          • 2...Kxa6
            • 3.Qb5#
          • 2...Kc6
            • 3.Qd6#
            • 3.Qb5#
        • 2.Qc7+
          • 2...Kxa6
            • 3.Qa7#
      • 1...Kd4!
  • Keys
    • 1.Qe1!
      • 1...Kd4
        • 2.Ba7+
          • 2...Kd3
            • 3.Qe3#
      • 1...Kb6
        • 2.Qb4+
          • 2...Kxa6
            • 3.Qb5#
          • 2...Kc6
            • 3.Qd6#
            • 3.Qb5#
      • 1...Kc6
        • 2.Qa5
          • threat
            • 3.Qc7#
            • 3.Qb5#
          • 2...Kd7
            • 3.Qc7#
      • 1...d4
        • 2.Qa5+
          • 2...Kc6
            • 3.Qb5#

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