MESON Chess Problem Database

Problem Display
PID: 992 (7r/p7/3PPkB1/4pN2/KB6/8/Q7/6R1 w - - 0 1)

Backe, Espen

The Problemist Supplement, 1996

7r/p7/3PPkB1/4pN2/KB6/8/Q7/6R1

#2

8 + 4

SOLUTION

  • SOUND
  • Sets
    • 1...e4
      • 2.Bc3#
  • Tries
    • 1.d7?
      • threat
        • 2.Be7#
      • 1...e4
        • 2.Bc3#
      • 1...Rh4
        • 2.d8Q#
        • 2.d8B#
      • 1...Re8
        • 2.dxe8S#
      • 1...Rh7!
  • Keys
    • 1.e7!
      • threat
        • 2.Qf7#
      • 1...e4
        • 2.Bc3#
      • 1...Rh7
        • 2.e8S#
      • 1...Rf8
        • 2.exf8Q#
        • 2.exf8R#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • P(a);OGATEB::B(D)
  • Tries
    • Try
      • P(F);
      • Threat
        • B(D)
      • Vars
        • P(a);OGATEB::B(D)
        • R(d);N_GUARD,P_PINB(D)::P=Q
        • R(d);OGATE::PXR(d)=S
      • Refutation
        • R(d);
  • Actual
    • P(G);
    • Threat
      • QAR1(B)
    • Vars
      • P(a);OGATEB::B(D)
      • R(d);N_GUARD::P=S
      • R(d);OGATE::PXR(d)=Q
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