MESON Chess Problem Database

Problem Display
PID: 27317 (8/8/4K3/1QR3bp/7k/8/5N2/8 w - - 0 1)

Lebeck, Donald

Mate in Two!! (Lebeck), 1992

8/8/4K3/1QR3bp/7k/8/5N2/8

#2

4 + 3

SOLUTION

  • SOUND
  • Tries
    • 1.Qa4+?
      • 1...Bf4
        • 2.Qxf4#
      • 1...Kg3!
    • 1.Qc4+?
      • 1...Bf4
        • 2.Qxf4#
      • 1...Kg3!
    • 1.Qb4+?
      • 1...Bf4
        • 2.Qxf4#
      • 1...Kg3!
  • Keys
    • 1.Qb8!
      • threat
        • 2.Qh2#
      • 1...Bf4
        • 2.Qxf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(B);CHECK
      • Vars
        • B(b);N_GUARD,P_SPINB(b)::QAR2(B),XB(b)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(B);CHECK
      • Vars
        • B(b);N_GUARD,P_SPINB(b)::QAR2(B),XB(b)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(B);CHECK
      • Vars
        • B(b);N_GUARD,P_SPINB(b)::QAR2(B),XB(b)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • Q(B);
    • Threat
      • QAR2(B)
    • Vars
      • B(b);N_GUARD::QAR2(B),XB(b)
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