MESON Chess Problem Database

Problem Display
PID: 22201 (8/8/4p3/2P1kpK1/2P1P1p1/3PP3/2P2P2/8 w - - 0 1)

Borner, Jorgen

Dagbladet, 1973

8/8/4p3/2P1kpK1/2P1P1p1/3PP3/2P2P2/8

#2

8 + 4

259 Thema Danicum 1976

SOLUTION

  • SOUND
  • Sets
    • 1...g3
      • 2.f4#
    • 1...fxe4
      • 2.d4#
  • Tries
    • 1.Kg6?
      • 1...fxe4
        • 2.d4#
      • 1...g3
        • 2.f4#
      • 1...f4!
    • 1.f3?
      • threat
        • 2.d4#
        • 2.f4#
      • 1...f4
        • 2.d4#
      • 1...gxf3!
    • 1.exf5?
      • 1...g3
        • 2.f4#
      • 1...exf5!
  • Keys
    • 1.c3!
      • 1...fxe4
        • 2.d4#
      • 1...g3
        • 2.f4#
      • 1...f4
        • 2.exf4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • P(a);N_GUARD::P(B)
    • P(c);SBLOCK,XP(F)::P(C)
  • Tries
    • Try
      • K(H);P-FLIGHT
      • Vars
        • P(c);SBLOCK,XP(F)::P(C)
        • P(a);N_GUARD::P(B)
      • Refutation
        • P(c);
    • Try
      • P(B);
      • Threat
        • DUALS(2)
      • Vars
        • P(c);::P(C)
      • Refutation
        • P(a);XP(B)
    • Try
      • P(F);XP(c)
      • Vars
        • P(a);N_GUARD::P(B)
      • Refutation
        • P(d);XP(F)
  • Actual
    • P(A);
    • Vars
      • P(c);SBLOCK,XP(F)::P(C)
      • P(a);N_GUARD::P(B)
      • P(c);OGATE::P(D),XP(c)
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