MESON Chess Problem Database

Problem Display
PID: 53465 (2K2n2/b1N1Pr2/2B2p2/Q5p1/R1r2kN1/5Pp1/b5P1/8 w - - 0 1)

Fontaine, Leon

Source?, 1929

2K2n2/b1N1Pr2/2B2p2/Q5p1/R1r2kN1/5Pp1/b5P1/8

#2

9 + 9

785 Het Belgisch Schaakbord (L'Echiquier Belge) 1949

SOLUTION

  • SOUND
  • Sets
    • 1...Re4
      • 2.Rxe4#
    • 1...Se6
      • 2.Sxe6#
    • 1...Sg6
      • 2.Se6#
    • 1...Sd7
      • 2.Se6#
    • 1...Sh7
      • 2.Se6#
    • 1...f5
      • 2.Sd5#
      • 2.Qe5#
  • Tries
    • 1.Rxc4+?
      • 1...Bd4
        • 2.Rxd4#
      • 1...Bxc4!
  • Keys
    • 1.Be4!
      • threat
        • 2.Qf5#
      • 1...Rxc7+
        • 2.Qxc7#
      • 1...Rxe4
        • 2.Rxe4#
      • 1...Rc5
        • 2.Qd2#
      • 1...Bc5
        • 2.Sd5#
      • 1...f5
        • 2.Qe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 4
  • Sets
    • R(c);OGATE::R1(C),XR(c)
    • S(i);N_GUARD::S(G),XS(i)
    • S(i);N_GUARD::S(G)
  • Tries
    • Try
      • R(C);CHECK,XR(c)
      • Vars
        • B(g);N_GUARD,P_SPINB(g)::R(C),XB(g)
      • Refutation
        • B(a);XR(C)
  • Actual
    • B(F);N_PINR(c),P_SPINS(G)
    • Threat
      • QAR1(E)
    • Vars
      • R(c);CHECK,OGATE,XS(G)::QAB(E),XR(c)
      • R(c);N_PINS(G),OGATE,P_SPINR(c),XB(F)::R1(C),XR(c)
      • R(c);S_CUTB(g)::QAB(E)
      • B(g);N_PINS(G)::S(G)
      • P(f);N_GUARD::QAB1(E)
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