MESON Chess Problem Database

Problem Display
PID: 182532 (4B1K1/6Q1/1pPP4/prqk1P2/RnN2P2/3NnP2/PR6/6B1 w - - 0 1)

Head, Arthur James

Bulletin Ouvrier des Echecs, 1939

4B1K1/6Q1/1pPP4/prqk1P2/RnN2P2/3NnP2/PR6/6B1

#2

14 + 7

78 Bulletin Ouvrier des Echecs 1953

SOLUTION

  • SOUND
  • Sets
    • 1...Qd4
      • 2.Qf7#
    • 1...Qxd6
      • 2.Sxe3#
    • 1...Qxc4
      • 2.Qe5#
    • 1...Qxc6
      • 2.Bf7#
    • 1...Sd1
      • 2.Qf7#
    • 1...Sf1
      • 2.Qf7#
    • 1...Sec2
      • 2.Qf7#
    • 1...Sg2
      • 2.Qf7#
    • 1...Sg4
      • 2.Qf7#
    • 1...Sxf5
      • 2.Qf7#
    • 1...Sxa2
      • 2.Qe5#
    • 1...Sbc2
      • 2.Qe5#
    • 1...Sa6
      • 2.Qe5#
    • 1...Sxc6
      • 2.Bf7#
  • Tries
    • 1.Sxe3+?
      • 1...Kxd6
        • 2.Qd7#
      • 1...Qxe3!
  • Keys
    • 1.Rd2!
      • 1...Kxc4
        • 2.Sb2#
      • 1...Qxd6
        • 2.Sxe3#
      • 1...Qxc4
        • 2.Qe5#
      • 1...Qxc6
        • 2.Bf7#
      • 1...Sxc4
        • 2.Sxb4#
      • 1...Sxf5
        • 2.Qf7#
      • 1...Sxa2
        • 2.Qe5#
      • 1...Sxd3
        • 2.Qe5#
      • 1...Sxc6
        • 2.Bf7#
      • 1...Qd4
        • 2.Qf7#
      • 1...Sd1
        • 2.Qf7#
      • 1...Sf1
        • 2.Qf7#
      • 1...Sec2
        • 2.Qf7#
      • 1...Sg2
        • 2.Qf7#
      • 1...Sg4
        • 2.Qf7#
      • 1...Sbc2
        • 2.Qe5#
      • 1...Sa6
        • 2.Qe5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • Q(e);SBLOCK::QAB(L)
    • Q(e);N_GUARD,SBLOCK,XP(K)::S(G),XS(a)
    • Q(e);SBLOCK,XS(G)::QAR1(L)
    • Q(e);SBLOCK,XP(J)::B(M)
    • S(a);::QAB(L)
    • S(a);XP(I)::QAB(L)
    • S(b);XP(B)::QAR1(L)
    • S(b);::QAR1(L)
    • S(b);SBLOCK,XP(J)::B(M)
  • Tries
    • Try
      • S(G);CHECK,XS(a)
      • Vars
        • K(f);P-FLIGHT,XP(K)::QAR1(L)
      • Refutation
        • Q(e);XS(G)
  • Actual
    • R(C);
    • Vars
      • K(f);P_SPINS(b),S_FLIGHT,XS(G)::S(D)
      • Q(e);N_GUARD,SBLOCK,XP(K)::S(G),XS(a)
      • Q(e);SBLOCK,XS(G)::QAR1(L)
      • Q(e);SBLOCK,XP(J)::B(M)
      • S(a);SBLOCK,XS(G)::R(C)+S(D),DCHECK,XS(b)
      • S(a);XP(I)::QAB(L)
      • S(b);XP(B)::QAR1(L)
      • S(b);P_SPINS(b),XS(D)::QAR1(L)
      • S(b);SBLOCK,XP(J)::B(M)
      • Q(e);SBLOCK::QAB(L)
      • S(a);::QAB(L)
      • S(b);::QAR1(L)
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