MESON Chess Problem Database

Problem Display
PID: 27303 (7R/7n/1K3BRn/7k/7N/4N3/8/8 w - - 0 1)

Lebeck, Donald

Mate in Two!! (Lebeck), 1992

7R/7n/1K3BRn/7k/7N/4N3/8/8

#2

6 + 3

SOLUTION

  • SOUND
  • Sets
    • 1...Sg5
      • 2.Rgxh6#
      • 2.Rhxh6#
    • 1...Sxf6
      • 2.Rhxh6#
    • 1...Sf8
      • 2.Rgxh6#
      • 2.Rhxh6#
  • Tries
    • 1.Sd5?
      • threat
        • 2.Sf4#
      • 1...Sxf6
        • 2.Rhxh6#
      • 1...Sg5!
    • 1.Sef5?
      • threat
        • 2.Sg3#
        • 2.Sg7#
      • 1...Sxf6
        • 2.Rhxh6#
      • 1...Sg5
        • 2.Rxg5#
      • 1...Sxf5!
    • 1.Shg2?
      • threat
        • 2.Sf4#
      • 1...Sxf6
        • 2.Rhxh6#
      • 1...Sg5
        • 2.Rxg5#
        • 2.Rgxh6#
        • 2.Rhxh6#
      • 1...Kxg6!
  • Keys
    • 1.Seg2!
      • threat
        • 2.Sf4#
      • 1...Sxf6
        • 2.Rhxh6#
      • 1...Sg5
        • 2.Rxg5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • S(c);OGATE,P_SPINS(b),XB(D)::R1(F),XS(b)
  • Tries
    • Try
      • S(A);
      • Threat
        • S(A)
      • Vars
        • S(c);OGATE,P_SPINS(b),XB(D)::R1(F),XS(b)
      • Refutation
        • S(c);P_SPINS(b)
    • Try
      • S(A);
      • Threat
        • DUALS(2)
      • Vars
        • S(c);OGATE,P_SPINS(b),XB(D)::R1(F),XS(b)
        • S(c);N_GUARD,P_SPINS(b)::R1(E),XS(c)
      • Refutation
        • S(b);P_SPINS(c),XS(A)
    • Try
      • S(B);
      • Threat
        • S(B)
      • Vars
        • S(c);OGATE,P_SPINS(b),XB(D)::R1(F),XS(b)
      • Refutation
        • K(a);S_FLIGHT,XR(E)
  • Actual
    • S(A);
    • Threat
      • S(A)
    • Vars
      • S(c);OGATE,P_SPINS(b),XB(D)::R1(F),XS(b)
      • S(c);N_GUARD,P_SPINS(b)::R1(E),XS(c)
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