MESON Chess Problem Database

Problem Display
PID: 27320 (5Q2/8/8/3n2K1/8/5B1b/6R1/7k w - - 0 1)

Lebeck, Donald

Mate in Two!! (Lebeck), 1992

5Q2/8/8/3n2K1/8/5B1b/6R1/7k

#2

4 + 3

SOLUTION

  • SOUND
  • Tries
    • 1.Qd6?
      • threat
        • 2.Qh2#
      • 1...Sf4
        • 2.Qd1#
      • 1...Bxg2!
    • 1.Qb8?
      • threat
        • 2.Qh2#
        • 2.Qb1#
      • 1...Bf5
        • 2.Rg4#
        • 2.Qh2#
      • 1...Sc3
        • 2.Qh2#
      • 1...Se3
        • 2.Qh2#
      • 1...Sb4
        • 2.Qh2#
      • 1...Sf4
        • 2.Qb1#
      • 1...Sb6
        • 2.Qh2#
      • 1...Sc7
        • 2.Qb1#
      • 1...Bxg2!
  • Keys
    • 1.Qh8!
      • threat
        • 2.Qa1#
        • 2.Qxh3#
      • 1...Sc3
        • 2.Qxh3#
      • 1...Se3
        • 2.Qxh3#
      • 1...Sf4
        • 2.Qa1#
      • 1...Sf6
        • 2.Qxh3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(D);
      • Threat
        • QAR1(D)
      • Vars
        • S(c);OGATE::QAR(D)
      • Refutation
        • B(b);P_SPINB(b),XR(A)
    • Try
      • Q(D);
      • Threat
        • DUALS(2)
      • Vars
        • S(c);::QAR1(D)
        • S(c);::QAR(D)
      • Refutation
        • B(b);P_SPINB(b),XR(A)
  • Actual
    • Q(D);P_PINB(b)
    • Threat
      • DUALS(2)
    • Vars
      • S(c);::QAR2(D),XB(b)
      • S(c);::QAB1(D)
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