MESON Chess Problem Database

Problem Display
PID: 27421 (rk5K/nPp5/2PN4/8/8/2Q5/8/8 w - - 0 1)

Lebeck, Donald

Mate in Two!! (Lebeck), 1992

rk5K/nPp5/2PN4/8/8/2Q5/8/8

#2

5 + 4

SOLUTION

  • SOUND
  • Tries
    • 1.Qa1?
      • 1...Sxc6
        • 2.Qxa8#
        • 2.bxa8Q#
        • 2.bxa8R#
      • 1...Sb5
        • 2.Qxa8#
        • 2.bxa8Q#
        • 2.bxa8R#
      • 1...Sc8
        • 2.Qxa8#
        • 2.bxa8Q#
        • 2.bxa8R#
        • 2.bxc8Q#
        • 2.bxc8R#
      • 1...cxd6!
    • 1.Qa5?
      • 1...Sxc6
        • 2.Qxa8#
        • 2.bxa8Q#
        • 2.bxa8R#
      • 1...Sb5
        • 2.Qxa8#
        • 2.bxa8Q#
        • 2.bxa8R#
      • 1...Sc8
        • 2.Qxa8#
        • 2.bxa8Q#
        • 2.bxa8R#
        • 2.bxc8Q#
        • 2.bxc8R#
      • 1...cxd6!
  • Keys
    • 1.Qa3!
      • 1...Sxc6
        • 2.Qxa8#
        • 2.bxa8Q#
        • 2.bxa8R#
      • 1...cxd6
        • 2.Qxd6#
      • 1...Sb5
        • 2.Qxa8#
        • 2.bxa8Q#
        • 2.bxa8R#
      • 1...Sc8
        • 2.Qxa8#
        • 2.bxa8Q#
        • 2.bxa8R#
        • 2.bxc8Q#
        • 2.bxc8R#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(A);
      • Refutation
        • P(b);XS(C)
    • Try
      • Q(A);
      • Refutation
        • P(b);XS(C)
  • Actual
    • Q(A);
    • Vars
      • P(b);OGATE,XS(C)::QAB(A),XP(b)
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