MESON Chess Problem Database

Problem Display
PID: 27206 (R2Q4/3bK3/1pp5/1k2N3/3P4/B7/8/8 w - - 0 1)

Lebeck, Donald

Mate in Two!! (Lebeck), 1992

R2Q4/3bK3/1pp5/1k2N3/3P4/B7/8/8

#2

6 + 4

SOLUTION

  • SOUND
  • Sets
    • 1...c5
      • 2.Qxd7#
  • Tries
    • 1.Qc7?
      • 1...Bh3
        • 2.Qxc6#
      • 1...Bg4
        • 2.Qxc6#
      • 1...Bf5
        • 2.Qxc6#
      • 1...Be6
        • 2.Qxc6#
      • 1...Bc8
        • 2.Qxc6#
      • 1...c5
        • 2.Qxd7#
      • 1...Be8!
    • 1.Qe8?
      • 1...Bh3
        • 2.Qxc6#
      • 1...Bg4
        • 2.Qxc6#
      • 1...Bf5
        • 2.Qxc6#
      • 1...Be6
        • 2.Qxc6#
      • 1...Bc8
        • 2.Qxc6#
      • 1...c5
        • 2.Qxd7#
      • 1...Bxe8!
  • Keys
    • 1.Bc5!
      • threat
        • 2.Qxb6#
      • 1...bxc5
        • 2.Qa5#
        • 2.Qb8#

There are these versions: 27235

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 1
  • Sets
    • P(c);OGATEB::QAB(F),XB(d)
  • Tries
    • Try
      • Q(F);
      • Vars
        • B(d);N_GUARD::QAB1(F),XP(c)
        • P(c);OGATEB::QAB(F),XB(d)
      • Refutation
        • B(d);
    • Try
      • Q(F);
      • Vars
        • B(d);OGATE,P_SPINP(c)::QAB1(F),XP(c)
        • P(c);OGATEB,P_SPINB(d)::QAB(F),XB(d)
      • Refutation
        • B(d);XQ(F)
  • Actual
    • B(A);
    • Threat
      • QAR1(F),XP(b)
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