MESON Chess Problem Database

Problem Display
PID: 27779 (2Nrk3/3pPb2/8/3RNB2/K7/8/8/8 w - - 0 1)

Lebeck, Donald

Mate in Two!! (Lebeck), 1992

2Nrk3/3pPb2/8/3RNB2/K7/8/8/8

#2

6 + 4

SOLUTION

  • SOUND
  • Sets
    • 1...Bg6
      • 2.Bxg6#
  • Tries
    • 1.Sg6?
      • threat
        • 2.Sd6#
      • 1...Rxc8
        • 2.Bxd7#
      • 1...Bxg6
        • 2.Bxg6#
      • 1...d6!
  • Keys
    • 1.Sc6!
      • threat
        • 2.Sd6#
        • 2.exd8Q#
        • 2.exd8R#
      • 1...Rxc8
        • 2.Bxd7#
      • 1...Bxd5
        • 2.Sd6#
      • 1...dxc6
        • 2.Rxd8#
        • 2.exd8Q#
        • 2.exd8R#
      • 1...Bh5
        • 2.Sd6#
      • 1...Be6
        • 2.Sd6#
      • 1...Bg6
        • 2.Sd6#
        • 2.Bxg6#
      • 1...Bg8
        • 2.Sd6#
      • 1...d6
        • 2.exd8Q#
        • 2.exd8R#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 1
  • Sets
    • B(b);OGATEB::B(D),XB(b)
  • Tries
    • Try
      • S(C);
      • Threat
        • S(F)
      • Vars
        • R(c);N_GUARD,XS(F)::B(D),XP(a)
        • B(b);OGATE,XS(C)::B(D),XB(b)
      • Refutation
        • P(a);
  • Actual
    • S(C);
    • Threat
      • DUALS(3)
    • Vars
      • R(c);N_GUARD,XS(F)::B(D),XP(a)
      • B(b);XR(B)::S(F)
      • B(b);::S(F)
      • P(a);::PXR(c)=Q
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