MESON Chess Problem Database

Problem Display
PID: 150377 (3B4/5NK1/4p3/R2n1pNk/4R3/5P2/6P1/8 w - - 0 1)

Ahlheim, Karl-Heinz

Source?, 1999

3B4/5NK1/4p3/R2n1pNk/4R3/5P2/6P1/8

#2

8 + 4

15148 Sadier Collection 2014

SOLUTION

  • SOUND
  • Tries
    • 1.Sxe6?
      • threat
        • 2.Rh4#
      • 1...fxe4
        • 2.Sf4#
        • 2.Rxd5#
        • 2.g4#
      • 1...Sf4
        • 2.Sxf4#
        • 2.Rxf5#
        • 2.g4#
      • 1...Sf6
        • 2.Rxf5#
      • 1...f4
        • 2.Sxf4#
        • 2.Re5#
        • 2.Rxd5#
      • 1...Se7!
  • Keys
    • 1.Sh7!
      • threat
        • 2.Rh4#
      • 1...fxe4
        • 2.g4#
      • 1...Se7
        • 2.Sf6#
      • 1...Sf4
        • 2.g4#
      • 1...Sf6
        • 2.Sxf6#
      • 1...f4
        • 2.Re5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(E);XP(d)
      • Threat
        • R1(C)
      • Vars
        • S(a);OGATE,P_SPINP(b)::R(D),XP(b)
      • Refutation
        • S(a);P_SPINP(b)
  • Actual
    • S(E);
    • Threat
      • R1(C)
    • Vars
      • P(b);N_GUARD,P_SPINS(a),XR(C)::P(A)
      • S(a);N_GUARD,P_SPINP(b)::S(E)
      • S(a);P_SPINP(b)::P(A)
      • S(a);N_GUARD,P_SPINP(b)::S(E),XS(a)
      • P(b);OGATEB,P_SPINS(a)::R(C)
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