MESON Chess Problem Database

Problem Display
PID: 27425 (8/8/8/n7/1b1p4/2kp4/Q1P5/N1NK4 w - - 0 1)

Lebeck, Donald

Mate in Two!! (Lebeck), 1992

8/8/8/n7/1b1p4/2kp4/Q1P5/N1NK4

#2

5 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...Sb3
      • 2.Qxb3#
    • 1...Sc4
      • 2.Qb3#
    • 1...Sc6
      • 2.Qb3#
    • 1...Sb7
      • 2.Qb3#
    • 1...dxc2+
      • 2.Qxc2#
    • 1...d2
      • 2.Se2#
  • Keys
    • 1.cxd3!
      • threat
        • 2.Qc2#
        • 2.Qd2#
      • 1...Ba3
        • 2.Qd2#
      • 1...Bc5
        • 2.Qd2#
      • 1...Bd6
        • 2.Qd2#
      • 1...Be7
        • 2.Qd2#
      • 1...Bf8
        • 2.Qd2#
      • 1...Sb3
        • 2.Qxb3#
        • 2.Qc2#
      • 1...Sc4
        • 2.Qb3#
        • 2.Qc2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 6
  • Sets
    • S(e);N_GUARD::QAR1(D),XS(e)
    • S(e);N_GUARD::QAR1(D)
    • P(b);CHECK,OGATE,XP(E)::QAR1(D),XP(b)
    • P(b);N_GUARD::S(B)
  • Actual
    • P(E);XP(b)
    • Threat
      • DUALS(2)
    • Vars
      • B(c);::QAB1(D)
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