MESON Chess Problem Database

Problem Display
PID: 27783 (3Qnk2/2b2PN1/8/8/B7/1K6/8/8 w - - 0 1)

Lebeck, Donald

Mate in Two!! (Lebeck), 1992

3Qnk2/2b2PN1/8/8/B7/1K6/8/8

#2

5 + 3

SOLUTION

  • SOUND
  • Tries
    • 1.Sf5?
      • threat
        • 2.Qe7#
        • 2.Qxe8#
        • 2.fxe8Q#
      • 1...Bxd8
        • 2.fxe8Q#
      • 1...Bd6
        • 2.Qxe8#
        • 2.fxe8Q#
      • 1...Kxf7!
  • Keys
    • 1.Sh5!
      • threat
        • 2.Qxe8#
        • 2.fxe8Q#
      • 1...Kxf7
        • 2.Qxe8#
      • 1...Bxd8
        • 2.fxe8Q#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(D);
      • Threat
        • DUALS(3)
      • Vars
        • B(a);N_SPINS(b),XQ(E)::PXS(b)=Q
      • Refutation
        • K(c);N_SPINS(b),P-FLIGHT,XP(C)
  • Actual
    • S(D);
    • Threat
      • DUALS(2)
    • Vars
      • K(c);N_SPINS(b),P-FLIGHT,XP(C)::QAB1(E),XS(b)
      • B(a);N_SPINS(b),XQ(E)::PXS(b)=Q
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