MESON Chess Problem Database

Problem Display
PID: 76091 (8/7Q/1N6/5K2/1kB5/8/2P5/8 w - - 0 1)

Borisenko, Ivan Dmitrovich

StrateGems, 2007

8/7Q/1N6/5K2/1kB5/8/2P5/8

#3

5 + 1

SOLUTION

  • SOUND
  • Sets
    • 1...Ka5
      • 2.Sd5
        • 2...Ka4
          • 3.Qa7#
  • Tries
    • 1.Sd5+?
      • 1...Ka3
        • 2.Qb7
          • 2...Ka4
            • 3.Qa6#
            • 3.Qa8#
            • 3.Qb4#
            • 3.Qa7#
        • 2.Qg7
          • 2...Ka4
            • 3.Qa1#
            • 3.Qa7#
        • 2.Qh8
          • 2...Ka4
            • 3.Qa1#
            • 3.Qa8#
      • 1...Kc5
        • 2.Qc7+
          • 2...Kd4
            • 3.c3#
      • 1...Kxc4!
    • 1.Qe7+?
      • 1...Ka5
        • 2.Qc5#
      • 1...Kc3!
    • 1.Qg7?
      • threat
        • 2.Qd4
          • 2...Ka3
            • 3.Qc3#
          • 2...Ka5
            • 3.Qc5#
        • 2.Qe5
          • 2...Ka3
            • 3.Qc3#
      • 1...Ka5
        • 2.Sd5
          • 2...Ka4
            • 3.Qa1#
            • 3.Qa7#
      • 1...Kc5!
    • 1.Qh8?
      • threat
        • 2.Qd4
          • 2...Ka3
            • 3.Qc3#
          • 2...Ka5
            • 3.Qc5#
        • 2.Qe5
          • 2...Ka3
            • 3.Qc3#
      • 1...Ka5
        • 2.Sd5
          • 2...Ka4
            • 3.Qa1#
            • 3.Qa8#
      • 1...Kc5!
    • 1.c3+?
      • 1...Ka3
        • 2.Sa4
          • 2...Kxa4
            • 3.Qa7#
      • 1...Kxc3!
  • Keys
    • 1.Sa4!
      • 1...Ka3
        • 2.c3
          • 2...Kxa4
            • 3.Qa7#
      • 1...Kxa4
        • 2.Qb7
          • 2...Ka3
            • 3.Qb3#
          • 2...Ka5
            • 3.Qb5#
      • 1...Kxc4
        • 2.Qb7
          • 2...Kd4
            • 3.Qe4#
      • 1...Ka5
        • 2.c3
          • 2...Kxa4
            • 3.Qa7#

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