MESON Chess Problem Database

Problem Display
PID: 27797 (2q5/n1bB4/1kPN4/4R3/2Q5/8/8/1K6 w - - 0 1)

Lebeck, Donald

Mate in Two!! (Lebeck), 1992

2q5/n1bB4/1kPN4/4R3/2Q5/8/8/1K6

#2

6 + 4

SOLUTION

  • SOUND
  • Sets
    • 1...Qa6
      • 2.Qd4#
      • 2.Qc5#
  • Tries
    • 1.Qa2?
      • threat
        • 2.Sc4#
        • 2.Qa5#
      • 1...Bxd6
        • 2.Qa5#
      • 1...Sxc6
        • 2.Rb5#
      • 1...Bb8
        • 2.Qa5#
      • 1...Bd8
        • 2.Qa5#
      • 1...Qa6
        • 2.Qf2#
      • 1...Qg8
        • 2.Qa5#
      • 1...Sb5
        • 2.Sc4#
        • 2.Sxc8#
        • 2.Rxb5#
      • 1...Qxd7!
  • Keys
    • 1.Qa4!
      • threat
        • 2.Sc4#
        • 2.Qa5#
      • 1...Qxd7
        • 2.Sc4#
      • 1...Bxd6
        • 2.Qa5#
      • 1...Sxc6
        • 2.Rb5#
      • 1...Bb8
        • 2.Qa5#
      • 1...Bd8
        • 2.Qa5#
      • 1...Qa6
        • 2.Qd4#
      • 1...Qg8
        • 2.Qa5#
      • 1...Sb5
        • 2.Sc4#
        • 2.Sxc8#
        • 2.Rxb5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(B);
      • Threat
        • DUALS(2)
      • Vars
        • B(c);XS(E)::QAB1(B)
        • S(b);N_GUARD,XP(D)::R1(C)
        • B(c);::QAB1(B)
        • Q(d);SBLOCK::QAB(B)
        • Q(d);::QAB1(B)
      • Refutation
        • Q(d);XB(F)
  • Actual
    • Q(B);
    • Threat
      • DUALS(2)
    • Vars
      • Q(d);XB(F)::S(E)
      • B(c);XS(E)::QAB1(B)
      • S(b);N_GUARD,XP(D)::R1(C)
      • B(c);::QAB1(B)
      • Q(d);SBLOCK::QAB(B)
      • Q(d);::QAB1(B)
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