MESON Chess Problem Database

Problem Display
PID: 55440 (8/R7/1K1N1pN1/2PkPP2/8/p1P2P2/2n1r3/8 w - - 0 1)

Berg, Wolfgang

Troll, 1992

8/R7/1K1N1pN1/2PkPP2/8/p1P2P2/2n1r3/8

#2

9 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...Re4
      • 2.fxe4#
    • 1...Rxe5
      • 2.Sf4#
    • 1...Sd4
      • 2.c4#
    • 1...fxe5
      • 2.Se7#
  • Tries
    • 1.Re7?
      • threat
        • 2.Sf4#
      • 1...Re4
        • 2.fxe4#
      • 1...fxe5!
  • Keys
    • 1.Ra5!
      • threat
        • 2.c6#
      • 1...Rxe5
        • 2.Sf4#
      • 1...fxe5
        • 2.Se7#
      • 1...Sd4
        • 2.c4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 1
  • Sets
    • R(b);OGATE::P(B),XR(b)
    • R(b);SBLOCK,XP(D)::S(H)
    • S(a);SBLOCK::P(A)
    • P(e);SBLOCK,XP(D)::S(H)
  • Tries
    • Try
      • R(I);
      • Threat
        • S(H)
      • Vars
        • R(b);OGATE::P(B),XR(b)
      • Refutation
        • P(e);XP(D)
  • Actual
    • R(I);
    • Threat
      • R(I)+P(C)
    • Vars
      • R(b);SBLOCK,XP(D)::S(H)
      • P(e);SBLOCK,XP(D)::S(H)
      • S(a);SBLOCK::P(A)
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