MESON Chess Problem Database

Problem Display
PID: 184999 (Rnnk2rr/pb3Qp1/pP4N1/3q4/1B1R4/b6B/2K5/8 w - - 0 1)

Fontaine, Leon

Bulletin Ouvrier des Echecs, 1948

Rnnk2rr/pb3Qp1/pP4N1/3q4/1B1R4/b6B/2K5/8

#2

8 + 11

15601 Albrecht-Leiss-Degener Collection 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Re8
      • 2.Qc7#
    • 1...Rh4
      • 2.Qxg8#
    • 1...Rh5
      • 2.Qxg8#
    • 1...Rh6
      • 2.Qxg8#
    • 1...Rh7
      • 2.Qxg8#
    • 1...Sc6
      • 2.Rxd5#
    • 1...Sd7
      • 2.Qe7#
    • 1...Sxb6
      • 2.Qe7#
    • 1...Sd6
      • 2.Qd7#
      • 2.Qe7#
    • 1...Se7
      • 2.Qxe7#
  • Tries
    • 1.Rxd5+?
      • 1...Sd7
        • 2.Rxd7#
        • 2.Qxd7#
        • 2.Qe7#
      • 1...Sd6
        • 2.Rxd6#
        • 2.Qd7#
        • 2.Qe7#
      • 1...Bxd5!
    • 1.Rxb8?
      • threat
        • 2.Qe7#
      • 1...Re8
        • 2.Qc7#
      • 1...Bxb4!
  • Keys
    • 1.Sf4!
      • threat
        • 2.Se6#
      • 1...Sxb6
        • 2.Qe7#
      • 1...Re8
        • 2.Qc7#
      • 1...Rh6
        • 2.Qxg8#
      • 1...Sd7
        • 2.Qe7#
      • 1...Sd6
        • 2.Qd7#
      • 1...Se7
        • 2.Qxe7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 4
  • Sets
    • R(j);SBLOCK::QAB1(G)
    • R(k);N_GUARD::QAR(G),XR(j)
    • S(g);N_GUARD,P_SPINS(h),S_CUTB(e)::R(D),XQ(b)
    • S(g);N_SPINQ(b),P_SPINS(h)::QAB1(G)
    • S(h);N_GUARD,P_SPINS(g),XP(E)::QAB1(G)
    • S(h);N_GUARD,P_SPINS(g)::QAB1(G),XS(h)
  • Tries
    • Try
      • R(D);CHECK,XQ(b)
      • Refutation
        • B(e);XR(D)
    • Try
      • R(H);P_PINS(h),XS(g)
      • Threat
        • QAB1(G)
      • Vars
        • R(j);SBLOCK::QAB1(G)
      • Refutation
        • B(a);XB(C)
  • Actual
    • S(F);
    • Threat
      • S(F)
    • Vars
      • S(h);N_GUARD,P_SPINS(g),XP(E)::QAB1(G)
      • R(j);SBLOCK::QAB1(G)
      • R(k);N_GUARD::QAR(G),XR(j)
      • S(g);N_SPINQ(b),P_SPINS(h)::QAB1(G)
      • S(h);N_SPINQ(b),P_SPINS(g),S_CUTQ(b)::QAR1(G)
      • S(h);N_GUARD,P_SPINS(g)::QAB1(G),XS(h)
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Developed and maintained by Brian Stephenson.
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