MESON Chess Problem Database

Problem Display
PID: 27562 (1nqN4/2b5/1k1P4/1P6/1R1P4/5B2/Q4K2/8 w - - 0 1)

Lebeck, Donald

Mate in Two!! (Lebeck), 1992

1nqN4/2b5/1k1P4/1P6/1R1P4/5B2/Q4K2/8

#2

8 + 4

SOLUTION

  • SOUND
  • Sets
    • 1...Sc6
      • 2.bxc6#
  • Tries
    • 1.Sb7?
      • threat
        • 2.Qa5#
      • 1...Sa6
        • 2.Qxa6#
      • 1...Sc6
        • 2.Qa6#
        • 2.bxc6#
      • 1...Qxb7!
  • Keys
    • 1.Sc6!
      • threat
        • 2.Qa7#
      • 1...Kb7
        • 2.Qa7#
      • 1...Sxc6
        • 2.bxc6#
      • 1...Qa6
        • 2.bxa6#
      • 1...Qb7
        • 2.Qa5#
      • 1...Sa6
        • 2.bxa6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • S(c);OGATE::R(D)+P(F),XS(c)
  • Tries
    • Try
      • S(H);
      • Threat
        • QAB1(A)
      • Vars
        • S(c);N_GUARD::QAR1(A),XS(c)
      • Refutation
        • Q(d);XS(H)
  • Actual
    • S(H);
    • Threat
      • QAB1(A)
    • Vars
      • K(a);P-FLIGHT::QAR1(A)
      • S(c);OGATE,XS(H)::R(D)+P(F),XS(c)
      • Q(d);OGATE::R(D)+P(F),XQ(d)
      • Q(d);SBLOCK::QAB1(A)
      • S(c);OGATE::R(D)+P(F),XS(c)
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