MESON Chess Problem Database

Problem Display
PID: 274893 (2N4k/2P4P/4n2K/8/8/8/8/8 w - - 0 1)

Hammarstrom, Ulf

Springaren, 1992

2N4k/2P4P/4n2K/8/8/8/8/8

#2

4 + 2

SOLUTION

  • SOUND
  • Sets
    • 1...Sd8
      • 2.cxd8Q#
      • 2.cxd8R#
  • Tries
    • 1.Se7?
      • threat
        • 2.Sg6#
      • 1...Sf4
        • 2.c8Q#
        • 2.c8R#
      • 1...Sf8!
  • Keys
    • 1.Sd6!
      • threat
        • 2.Sf7#
      • 1...Sg5
        • 2.c8Q#
        • 2.c8R#
      • 1...Sd8
        • 2.cxd8Q#
        • 2.cxd8R#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • S(a);OGATE::PXS(a)=Q
  • Tries
    • Try
      • S(D);
      • Threat
        • S(D)
      • Vars
        • S(a);N_GUARD::P=Q
      • Refutation
        • S(a);
  • Actual
    • S(D);
    • Threat
      • S(D)
    • Vars
      • S(a);N_GUARD::P=Q
      • S(a);OGATE::PXS(a)=Q
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