MESON Chess Problem Database

Problem Display
PID: 61536 (3N3K/B1rn4/R2b1pN1/1n1k1b2/1P1p3R/3Q4/1qP1P3/8 w - - 0 1)

Fontaine, Leon

Het Belgisch Schaakbord (L'Echiquier Belge), 1955

3N3K/B1rn4/R2b1pN1/1n1k1b2/1P1p3R/3Q4/1qP1P3/8

#2

10 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Rxa7
      • 2.c4#
    • 1...Rb7
      • 2.c4#
    • 1...Bh3
      • 2.e4#
    • 1...Bg4
      • 2.e4#
    • 1...Be6
      • 2.e4#
    • 1...Bc5
      • 2.c4#
    • 1...Be5
      • 2.Se7#
    • 1...Sc3
      • 2.Rxd4#
      • 2.Qxd4#
    • 1...Sc5
      • 2.c4#
    • 1...Se5
      • 2.Sf4#
  • Tries
    • 1.Sf4+?
      • 1...Ke5
        • 2.Sf7#
      • 1...Bxf4!
    • 1.Se7+?
      • 1...Ke5
        • 2.Qxf5#
        • 2.Qg3#
      • 1...Bxe7!
    • 1.Qxf5+?
      • 1...Be5
        • 2.Qe6#
      • 1...Se5
        • 2.Qe6#
      • 1...Kc4!
  • Keys
    • 1.Rh5!
      • threat
        • 2.e4#
      • 1...Be5
        • 2.Se7#
      • 1...Sc3
        • 2.Qxd4#
      • 1...Sc5
        • 2.c4#
      • 1...Se5
        • 2.Sf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 6
  • Sets
    • R(h);N_GUARD,XB(H)::P(A)
    • R(h);N_GUARD::P(A)
    • B(e);N_GUARD::P(B)
    • B(f);S_CUTR(h)::P(A)
    • B(f);N_GUARD,SBLOCK::S(G)
    • S(i);S_CUTR(h)::P(A)
    • S(i);SBLOCK,S_CUTB(f)::S(G)
  • Tries
    • Try
      • S(G);CHECK
      • Vars
        • K(d);N_SPINP(b),P-FLIGHT::S(I)
      • Refutation
        • B(f);XS(G)
    • Try
      • S(G);CHECK
      • Refutation
        • B(f);XS(G)
    • Try
      • Q(C);CHECK,N_PINP(b),XB(e)
      • Vars
        • B(f);P_SPINB(f)::QAB1(C)
        • S(i);P_SPINS(i)::QAB1(C)
      • Refutation
        • K(d);P_SPINP(b),S_FLIGHT
  • Actual
    • R(E);P_PINB(e)
    • Threat
      • P(B)
    • Vars
      • B(f);N_GUARD,N_SPINB(e),SBLOCK::S(G)
      • S(c);N_GUARD,S_CUTQ(a)::QAR1(C),XP(b)
      • S(i);S_CUTR(h)::P(A)
      • S(i);N_SPINB(e),SBLOCK,S_CUTB(f)::S(G)
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Developed and maintained by Brian Stephenson.
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