MESON Chess Problem Database

Problem Display
PID: 228649 (n7/Q1p5/1p1p4/p2P4/2P5/p1B5/k1K2P2/8 w - - 0 1)

Chamberlain, Brian E

Problem Observer, 2020

n7/Q1p5/1p1p4/p2P4/2P5/p1B5/k1K2P2/8

#3

6 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...a4
      • 2.Qxa4
        • threat
          • 3.Qb3#
  • Tries
    • 1.Qxa5?
      • threat
        • 2.Qb4
          • threat
            • 3.Qb1#
            • 3.Qb3#
        • 2.Qa4
          • threat
            • 3.Qb3#
        • 2.Qb5
          • threat
            • 3.Qb1#
            • 3.Qb3#
      • 1...b5
        • 2.Bb4
          • threat
            • 3.Qxa3#
          • 2...Ka1
            • 3.Qxa3#
        • 2.Qb4
          • threat
            • 3.Qb1#
            • 3.Qb3#
        • 2.Qxb5
          • threat
            • 3.Qb1#
            • 3.Qb3#
      • 1...c5
        • 2.Qa4
          • threat
            • 3.Qb3#
        • 2.Qb5
          • 2...Sc7
            • 3.Qb1#
            • 3.Qb3#
      • 1...c6
        • 2.Qb4
          • threat
            • 3.Qb1#
            • 3.Qb3#
        • 2.Qa4
          • threat
            • 3.Qb3#
      • 1...bxa5!
    • 1.Qa6?
      • threat
        • 2.Qb5
          • threat
            • 3.Qb1#
            • 3.Qb3#
      • 1...b5
        • 2.Qxb5
          • threat
            • 3.Qb1#
            • 3.Qb3#
      • 1...a4
        • 2.Qb5
          • threat
            • 3.Qb1#
        • 2.Qxa4
          • threat
            • 3.Qb3#
      • 1...c6!
  • Keys
    • 1.Bh8!
      • 1...b5
        • 2.Qd4
          • threat
            • 3.Qa1#
      • 1...a4
        • 2.Qxa4
          • threat
            • 3.Qb3#
      • 1...c5
        • 2.Qg7
          • threat
            • 3.Qa1#
      • 1...c6
        • 2.Qg7
          • threat
            • 3.Qa1#

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