MESON Chess Problem Database

Problem Display
PID: 7722 (6kb/7N/5BP1/8/8/8/8/5KQ1 w - - 0 1)

Lincoln, Robert A

Die Schwalbe, 1993

6kb/7N/5BP1/8/8/8/8/5KQ1

#2

5 + 2

2838 Fun with Chess Miniatures 1996

SOLUTION

  • SOUND
  • Tries
    • 1.Qc5?
      • threat
        • 2.Qf8#
        • 2.Qc4#
        • 2.Qd5#
        • 2.Qc8#
      • 1...Bxf6
        • 2.Qf8#
      • 1...Bg7!
    • 1.Qa7?
      • threat
        • 2.Qb8#
        • 2.Qa2#
        • 2.Qf7#
        • 2.Qa8#
      • 1...Bg7
        • 2.Qxg7#
      • 1...Bxf6!
  • Keys
    • 1.g7!
      • 1...Kf7
        • 2.g8Q#
      • 1...Kxh7
        • 2.gxh8Q#
        • 2.gxh8R#
      • 1...Bxg7
        • 2.Qxg7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(B);
      • Threat
        • DUALS(4)
      • Vars
        • B(b);XB(C)::QAR1(B)
      • Refutation
        • B(b);
    • Try
      • Q(B);
      • Threat
        • DUALS(4)
      • Vars
        • B(b);N_GUARD::QAR1(B),XB(b)
      • Refutation
        • B(b);XB(C)
  • Actual
    • P(D);
    • Vars
      • K(a);OGATE,S_FLIGHT::P=Q
      • K(a);S_FLIGHT,XS(E)::PXB(b)=Q
      • B(b);OGATE,P_SPINB(b),XP(D)::QAR1(B),XB(b)
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