MESON Chess Problem Database

Problem Display
PID: 9379 (8/1k6/1N6/BN2K3/Q7/8/8/8 w - - 0 1)

Przepiorka, Dawid

Bohemia, 1902

8/1k6/1N6/BN2K3/Q7/8/8/8

#2

5 + 1

4883 Still More Fun with Chess Miniatures 2002
14868 Pirnie Collection 2011

SOLUTION

  • SOUND
  • Tries
    • 1.Qc2?
      • threat
        • 2.Qc8#
      • 1...Kb8
        • 2.Qc7#
        • 2.Qc8#
      • 1...Ka6!
    • 1.Qc4?
      • threat
        • 2.Qc8#
      • 1...Kb8
        • 2.Qc7#
        • 2.Qc8#
      • 1...Ka6!
    • 1.Qe4+?
      • 1...Kb8
        • 2.Qa8#
      • 1...Ka6!
  • Keys
    • 1.Sd7!
      • 1...Ka6
        • 2.Sc5#
      • 1...Kc6
        • 2.Sd6#
      • 1...Ka8
        • 2.Qe4#
      • 1...Kc8
        • 2.Sd6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(A);
      • Threat
        • QAB1(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);
      • Threat
        • QAB1(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);OGATE,P-FLIGHT::QAR1(A)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • S(E);
    • Vars
      • K(a);S_FLIGHT::S(E)
      • K(a);S_FLIGHT::QAB(A)+S(C)
      • K(a);S_FLIGHT::QAB(A)
      • K(a);S_FLIGHT::S(C)
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