MESON Chess Problem Database

Problem Display
PID: 27334 (Q7/2pN4/bp6/1krP4/2R5/B1R1K3/8/8 w - - 0 1)

Lebeck, Donald

Mate in Two!! (Lebeck), 1992

Q7/2pN4/bp6/1krP4/2R5/B1R1K3/8/8

#2

7 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...Bb7
      • 2.Rb4#
      • 2.Qa4#
    • 1...Bc8
      • 2.Rb4#
      • 2.Qa4#
  • Tries
    • 1.Sxc5?
      • threat
        • 2.Qxa6#
      • 1...Ka5
        • 2.Qxa6#
      • 1...Bb7
        • 2.Rb4#
        • 2.Qa4#
      • 1...Bc8
        • 2.Rb4#
        • 2.Qa4#
      • 1...bxc5!
    • 1.Rxc5+?
      • 1...Ka4
        • 2.Qxa6#
      • 1...bxc5!
    • 1.Qc6+?
      • 1...Ka5
        • 2.Bb4#
        • 2.Ra4#
        • 2.Qa4#
      • 1...Rxc6!
  • Keys
    • 1.Sb8!
      • threat
        • 2.Qxa6#
      • 1...Ka5
        • 2.Qxa6#
      • 1...Bb7
        • 2.Rb4#
        • 2.Qa4#
      • 1...Bc8
        • 2.Rb4#
        • 2.Qa4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(F);XR(b)
      • Threat
        • QAB1(G),XB(c)
      • Vars
        • K(a);P-FLIGHT,P_SPINB(c)::QAR1(G),XB(c)
      • Refutation
        • P(d);XS(F)
    • Try
      • R(D);CHECK,XR(b)
      • Vars
        • K(a);P_SPINB(c),S_FLIGHT::QAR2(G),XB(c)
      • Refutation
        • P(d);XR(D)
    • Try
      • Q(G);CHECK
      • Refutation
        • R(b);XQ(G)
  • Actual
    • S(F);
    • Threat
      • QAB1(G),XB(c)
    • Vars
      • K(a);P-FLIGHT,P_SPINB(c)::QAR1(G),XB(c)
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