MESON Chess Problem Database

Problem Display
PID: 250841 (8/1K1R4/3N1pN1/3kPP2/1B6/2P2P2/8/4r3 w - - 0 1)

Shire, David J

The Problemist, 1991

8/1K1R4/3N1pN1/3kPP2/1B6/2P2P2/8/4r3

#2

9 + 3

SOLUTION

  • SOUND
  • Sets
    • 1...Re4
      • 2.fxe4#
    • 1...Rxe5
      • 2.Sf4#
    • 1...fxe5
      • 2.Se7#
  • Tries
    • 1.Re7?
      • threat
        • 2.Sf4#
      • 1...Re4
        • 2.fxe4#
      • 1...fxe5!
  • Keys
    • 1.Rc7!
      • threat
        • 2.Rc5#
      • 1...Rxe5
        • 2.Sf4#
      • 1...fxe5
        • 2.Se7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 1
  • Sets
    • R(a);OGATE::P(B),XR(a)
    • R(a);SBLOCK,XP(D)::S(G)
    • P(c);SBLOCK,XP(D)::S(G)
  • Tries
    • Try
      • R(I);
      • Threat
        • S(G)
      • Vars
        • R(a);OGATE::P(B),XR(a)
      • Refutation
        • P(c);XP(D)
  • Actual
    • R(I);
    • Threat
      • R1(I)
    • Vars
      • R(a);SBLOCK,XP(D)::S(G)
      • P(c);SBLOCK,XP(D)::S(G)
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