MESON Chess Problem Database

Problem Display
PID: 27872 (kb5Q/q7/P2N4/1RB5/8/5K2/8/8 w - - 0 1)

Lebeck, Donald

Mate in Two!! (Lebeck), 1992

kb5Q/q7/P2N4/1RB5/8/5K2/8/8

#2

6 + 3

SOLUTION

  • SOUND
  • Sets
    • 1...Qxc5
      • 2.Qxb8#
    • 1...Qxa6
      • 2.Rxb8#
      • 2.Qxb8#
    • 1...Qb7+
      • 2.axb7#
    • 1...Qd7
      • 2.Rxb8#
      • 2.Qxb8#
    • 1...Qe7
      • 2.Rxb8#
      • 2.Qxb8#
    • 1...Qg7
      • 2.Rxb8#
      • 2.Qxb8#
    • 1...Qh7
      • 2.Rxb8#
      • 2.Qxb8#
  • Keys
    • 1.Rb7!
      • threat
        • 2.Rxa7#
      • 1...Qxb7+
        • 2.axb7#
      • 1...Qxc5
        • 2.Qxb8#
      • 1...Qxa6
        • 2.Rxb8#
        • 2.Qxb8#
      • 1...Qb6
        • 2.Qxb8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • Q(a);N_GUARD,XB(C)::QAR1(F),XB(c)
    • Q(a);CHECK,OGATE::P(D),XQ(a)
  • Actual
    • R(B);
    • Threat
      • R1(B),XQ(a)
    • Vars
      • Q(a);CHECK,OGATE,XR(B)::P(D),XQ(a)
      • Q(a);N_GUARD,XB(C)::QAR1(F),XB(c)
      • Q(a);N_GUARD::QAR1(F),XB(c)
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