MESON Chess Problem Database

Problem Display
PID: 133121 (8/3P1b2/2Np4/3kPB2/2R5/1K1P4/8/4b3 w - - 0 1)

Boyer, Jean-Pierre

Fontenay-sous-Bois, 1985

8/3P1b2/2Np4/3kPB2/2R5/1K1P4/8/4b3

#2

7 + 4

SOLUTION

  • SOUND
  • Sets
    • 1...Be6
      • 2.Be4#
    • 1...dxe5
      • 2.d8Q#
      • 2.d8R#
  • Tries
    • 1.d8S?
      • threat
        • 2.Be4#
      • 1...Bg6
        • 2.Be6#
      • 1...dxe5!
  • Keys
    • 1.d4!
      • threat
        • 2.Se7#
      • 1...dxe5
        • 2.d8Q#
        • 2.d8R#
      • 1...Bh4
        • 2.Sb4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • B(d);SBLOCK::B(E)
    • P(c);XP(D)::P=Q
  • Tries
    • Try
      • P(G);
      • Threat
        • B(E)
      • Vars
        • B(d);N_GUARD::B(E)
      • Refutation
        • P(c);XP(D)
  • Actual
    • P(B);
    • Threat
      • S(F)
    • Vars
      • P(c);XP(D)::P=Q
      • B(a);N_GUARD::S(F)
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