MESON Chess Problem Database

Problem Display
PID: 63210 (1n1Q4/R2p4/1P1pp3/1k1PP3/1N6/1R1N4/KnP1p3/3bB3 w - - 0 1)

Farnes, K

Chess, 1945

1n1Q4/R2p4/1P1pp3/1k1PP3/1N6/1R1N4/KnP1p3/3bB3

#2

11 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Sc4
      • 2.Sc6#
  • Tries
    • 1.Sa6+?
      • 1...Ka4
        • 2.Sxb2#
        • 2.Sac5#
        • 2.Sxb8#
      • 1...Kc4!
    • 1.Ra5+?
      • 1...Kc4
        • 2.Qh4#
      • 1...Kxa5!
    • 1.Qh4?
      • threat
        • 2.Sa6#
        • 2.Sc6#
      • 1...Kxb6
        • 2.Sc6#
      • 1...Bxc2
        • 2.Sxc2#
      • 1...Sxd3
        • 2.Sxd3#
      • 1...Sa6
        • 2.Sxa6#
      • 1...Sc4
        • 2.Sc6#
      • 1...Sc6
        • 2.Sxc6#
      • 1...exd5!
    • 1.c4+?
      • 1...Sxc4
        • 2.Sc2#
      • 1...Kxc4!
  • Keys
    • 1.Qc8!
      • 1...Kxb6
        • 2.Sc6#
        • 2.Qb7#
        • 2.Qxb8#
      • 1...Bxc2
        • 2.Sxc2#
      • 1...Sxd3
        • 2.Sxd3#
      • 1...dxe5
        • 2.Qc5#
      • 1...exd5
        • 2.Sxd5#
      • 1...Sa6
        • 2.Qxa6#
      • 1...Sc6
        • 2.Qa6#
      • 1...Sa4
        • 2.Sa6#
      • 1...Sc4
        • 2.Sc6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
    • S(b);SBLOCK::R(D)+S(F)
  • Tries
    • Try
      • S(F);CHECK
      • Refutation
        • K(d);S_FLIGHT
    • Try
      • R(J);CHECK
      • Vars
        • K(d);S_FLIGHT::QAR(K)
      • Refutation
        • K(d);P-FLIGHT,XR(J)
    • Try
      • Q(K);
      • Threat
        • DUALS(2)
      • Vars
        • K(d);P-FLIGHT,XP(I)::R(D)+S(F)
        • B(a);XP(C)::R(D)+S(F),XB(a)
        • S(b);XS(E)::R(D)+S(F),XS(b)
        • S(h);::R(D)+S(F),XS(h)
        • S(b);::R(D)+S(F)
      • Refutation
        • P(f);XP(G)
    • Try
      • P(C);CHECK
      • Vars
        • S(b);SBLOCK,XP(C)::R(D)+S(F)
      • Refutation
        • K(d);S_FLIGHT,XP(C)
  • Actual
    • Q(K);
    • Vars
      • B(a);XP(C)::R(D)+S(F),XB(a)
      • S(b);XS(E)::R(D)+S(F),XS(b)
      • P(e);N_GUARD,XP(H)::QAR1(K)
      • P(f);XP(G)::R(D)+S(F),XP(f)
      • S(h);N_GUARD::QAB1(K),XS(h)
      • S(h);N_GUARD::QAB1(K)
      • S(b);SBLOCK::R(D)+S(F)
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