MESON Chess Problem Database

Problem Display
PID: 27420 (8/3R4/1kq4R/NP6/5Q2/8/8/K7 w - - 0 1)

Lebeck, Donald

Mate in Two!! (Lebeck), 1992

8/3R4/1kq4R/NP6/5Q2/8/8/K7

#2

6 + 2

SOLUTION

  • SOUND
  • Tries
    • 1.Rxc6+?
      • 1...Kxb5
        • 2.Rd5#
      • 1...Kxa5!
    • 1.Rb7+?
      • 1...Kc5
        • 2.Qc4#
      • 1...Kxa5!
  • Keys
    • 1.Qb4!
      • threat
        • 2.Sc4#
        • 2.Rxc6#
        • 2.Rb7#
      • 1...Qf6+
        • 2.Rxf6#
      • 1...Qxh6
        • 2.Sc4#
        • 2.Rb7#
      • 1...Qd6
        • 2.Sc4#
        • 2.Rhxd6#
        • 2.Rb7#
      • 1...Qe6
        • 2.Sc4#
        • 2.Rxe6#
        • 2.Rb7#
      • 1...Qg6
        • 2.Sc4#
        • 2.Rxg6#
        • 2.Rb7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(E);CHECK,XQ(b)
      • Vars
        • K(a);P-FLIGHT,XP(D)::R(F)
      • Refutation
        • K(a);S_FLIGHT,XS(C)
    • Try
      • R(F);CHECK
      • Vars
        • K(a);N_SPINQ(b),S_FLIGHT::QAR1(B)
      • Refutation
        • K(a);N_SPINQ(b),S_FLIGHT,XS(C)
  • Actual
    • Q(B);
    • Threat
      • DUALS(3)
    • Vars
      • Q(b);CHECK,OGATEB::R(E),XQ(b)
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