MESON Chess Problem Database

Problem Display
PID: 164236 (5Br1/5RPR/6k1/3P4/6PP/5B1K/8/8 w - - 0 1)

Riczu, Lajos

Novi Temi, 1976

5Br1/5RPR/6k1/3P4/6PP/5B1K/8/8

#2

9 + 2

SOLUTION

  • SOUND
  • Sets
    • 1...Rxf8
      • 2.gxf8S#
    • 1...Rh8
      • 2.gxh8S#
  • Tries
    • 1.Rf4?
      • threat
        • 2.Be4#
      • 1...Rxf8
        • 2.gxf8S#
      • 1...Kxh7!
    • 1.Rf6+?
      • 1...Kxh7
        • 2.Be4#
      • 1...Kxf6!
  • Keys
    • 1.g5!
      • 1...Kxf7
        • 2.Bh5#
      • 1...Kxh7
        • 2.Be4#
      • 1...Rxg7
        • 2.Rhxg7#
      • 1...Rxf8
        • 2.gxf8S#
      • 1...Rh8
        • 2.gxh8S#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • R(b);OGATE,XB(I)::PXR(b)=S
    • R(b);OGATE::PXR(b)=S
  • Tries
    • Try
      • R(F);
      • Threat
        • B(A)
      • Vars
        • R(b);OGATE,XB(I)::PXR(b)=S
      • Refutation
        • K(a);S_FLIGHT,XR(H)
    • Try
      • R(F);CHECK
      • Vars
        • K(a);S_FLIGHT,XR(H)::B(A)
      • Refutation
        • K(a);P-FLIGHT,XR(F)
  • Actual
    • P(C);
    • Vars
      • K(a);S_FLIGHT,XR(F)::B(A)
      • K(a);S_FLIGHT,XR(H)::B(A)
      • R(b);OGATE,XP(G)::R1(H),XR(b)
      • R(b);OGATE,XB(I)::PXR(b)=S
      • R(b);OGATE::PXR(b)=S
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