MESON Chess Problem Database

Problem Display
PID: 27310 (R7/1kpQ4/1N6/8/8/8/8/1K6 w - - 0 1)

Lebeck, Donald

Mate in Two!! (Lebeck), 1992

R7/1kpQ4/1N6/8/8/8/8/1K6

#2

4 + 2

SOLUTION

  • SOUND
  • Tries
    • 1.Ra1?
      • 1...Kb8
        • 2.Qc8#
      • 1...Kxb6!
    • 1.Ra2?
      • 1...Kb8
        • 2.Qc8#
      • 1...Kxb6!
    • 1.Ra3?
      • 1...Kb8
        • 2.Qc8#
      • 1...Kxb6!
    • 1.Ra4?
      • 1...Kb8
        • 2.Qc8#
      • 1...Kxb6!
    • 1.Ra6?
      • 1...Kb8
        • 2.Qc8#
      • 1...Kxa6!
  • Keys
    • 1.Ra5!
      • 1...Kxb6
        • 2.Qb5#
      • 1...Kb8
        • 2.Qc8#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(D);
      • Vars
        • K(a);N_SPINP(b),P-FLIGHT::QAR1(C)
      • Refutation
        • K(a);N_SPINP(b),P-FLIGHT,XS(B)
    • Try
      • R(D);
      • Vars
        • K(a);N_SPINP(b),P-FLIGHT::QAR1(C)
      • Refutation
        • K(a);N_SPINP(b),P-FLIGHT,XS(B)
    • Try
      • R(D);
      • Vars
        • K(a);N_SPINP(b),P-FLIGHT::QAR1(C)
      • Refutation
        • K(a);N_SPINP(b),P-FLIGHT,XS(B)
    • Try
      • R(D);
      • Vars
        • K(a);N_SPINP(b),P-FLIGHT::QAR1(C)
      • Refutation
        • K(a);N_SPINP(b),P-FLIGHT,XS(B)
    • Try
      • R(D);
      • Vars
        • K(a);N_SPINP(b),P-FLIGHT::QAR1(C)
      • Refutation
        • K(a);N_SPINP(b),S_FLIGHT,XR(D)
  • Actual
    • R(D);
    • Vars
      • K(a);N_SPINP(b),OGATEB,P-FLIGHT,XS(B)::QAR1(C)
      • K(a);N_SPINP(b),P-FLIGHT::QAR1(C)
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