MESON Chess Problem Database

Problem Display
PID: 27332 (2r5/B1b5/1pRQ4/1k1P4/3P4/R7/K7/8 w - - 0 1)

Lebeck, Donald

Mate in Two!! (Lebeck), 1992

2r5/B1b5/1pRQ4/1k1P4/3P4/R7/K7/8

#2

7 + 4

SOLUTION

  • SOUND
  • Tries
    • 1.Rb3+?
      • 1...Ka4
        • 2.Qa3#
        • 2.Qb4#
      • 1...Ka5
        • 2.Qa3#
      • 1...Ka6!
    • 1.Rc5+?
      • 1...bxc5
        • 2.Qxc5#
      • 1...Kb4!
    • 1.Rxb6+?
      • 1...Kc4
        • 2.Rb4#
        • 2.Qc5#
      • 1...Bxb6!
    • 1.Qg6?
      • threat
        • 2.Qb1#
      • 1...Kb4
        • 2.Qb1#
      • 1...Bd6!
  • Keys
    • 1.Kb3!
      • threat
        • 2.Qb4#
      • 1...Bxd6
        • 2.Rxb6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(B);CHECK
      • Vars
        • K(a);P-FLIGHT::QAR2(F)
      • Refutation
        • K(a);P_SPINP(b),S_FLIGHT
    • Try
      • R(E);CHECK
      • Vars
        • P(b);OGATE,XR(E)::QAR1(F),XP(b)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • R(E);CHECK,XP(b)
      • Refutation
        • B(c);XR(E)
    • Try
      • Q(F);
      • Threat
        • QAR(F)
      • Vars
        • K(a);P-FLIGHT::QAR(F)
      • Refutation
        • B(c);
  • Actual
    • K(A);S_FLIGHT
    • Threat
      • QAR1(F)
    • Vars
      • B(c);N_GUARD,XQ(F)::R1(E),XP(b)
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