MESON Chess Problem Database

Problem Display
PID: 143035 (3R1Q1B/1nbb4/4N1p1/2PkrPR1/3N4/3Pp2K/8/8 w - - 0 1)

Lepage, M

Recomm., diagrammes 01. Composition Exercise, 1973

3R1Q1B/1nbb4/4N1p1/2PkrPR1/3N4/3Pp2K/8/8

#2

10 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Re4
      • 2.Sxc7#
    • 1...Rxf5
      • 2.Sxc7#
    • 1...Sxc5
      • 2.Qxc5#
  • Tries
    • 1.Rxd7+?
      • 1...Sd6
        • 2.Qa8#
      • 1...Bd6!
  • Keys
    • 1.fxg6!
      • threat
        • 2.Qf3#
      • 1...Sxc5
        • 2.Qxc5#
      • 1...Rf5
        • 2.Sxc7#
      • 1...Sd6
        • 2.Rxe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • R(c);::S(G),XB(f)
    • R(c);P_SPINR(c),XP(E)::S(G),XB(f)
    • S(e);OGATE,XP(D)::QAR1(I),XS(e)
  • Tries
    • Try
      • R(H);CHECK,XB(g)
      • Vars
        • S(e);P_SPINS(e),S_CUTB(f)::QAB(I)
      • Refutation
        • B(f);P_SPINB(f)
  • Actual
    • P(E);P_PINR(c),P_SPINS(G),XP(d)
    • Threat
      • QAB(I)
    • Vars
      • S(e);OGATE,XP(D)::QAR1(I),XS(e)
      • R(c);N_PINS(G)::S(G),XB(f)
      • S(e);N_SPINB(g),S_CUTB(f)::R1(F),XR(c)
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