MESON Chess Problem Database

Problem Display
PID: 251825 (3n1n1Q/4k3/1N5N/3P4/2K2P2/8/R7/3R4 w - - 0 1)

Anonymous

Manchester Weekly Times, 1889

(First published on Sat Jun 15 1889)

3n1n1Q/4k3/1N5N/3P4/2K2P2/8/R7/3R4

#2

8 + 3

15239 Valois Notebooks 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Kd6
      • 2.Qe5#
    • 1...Se6
      • 2.d6#
    • 1...Sd7
      • 2.Sc8#
  • Tries
    • 1.Re2+?
      • 1...Kd6
        • 2.Qe5#
      • 1...Sfe6
        • 2.d6#
      • 1...Sde6!
    • 1.d6+?
      • 1...Ke6
        • 2.Re2#
        • 2.Qe5#
        • 2.f5#
      • 1...Ke8!
  • Keys
    • 1.Ra8!
      • 1...Kd6
        • 2.Qe5#
      • 1...Ke8
        • 2.Re1#
      • 1...Sde6
        • 2.d6#
      • 1...Sc6
        • 2.Qxf8#
      • 1...Sb7
        • 2.Qxf8#
      • 1...Sf7
        • 2.Sf5#
      • 1...Sfe6
        • 2.d6#
      • 1...Sg6
        • 2.Qxd8#
      • 1...Sd7
        • 2.Sc8#
      • 1...Sh7
        • 2.Qxd8#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
    • K(a);S_CUTS(b),S_CUTS(c),S_FLIGHT::QAB1(H)
    • S(c);SBLOCK::P(E)
    • S(c);SBLOCK::S(F)
  • Tries
    • Try
      • R(B);CHECK
      • Vars
        • K(a);S_CUTS(b),S_CUTS(c),S_FLIGHT::QAB1(H)
        • S(c);P_SPINS(c)::P(E)
      • Refutation
        • S(b);P_SPINS(b)
    • Try
      • P(E);CHECK
      • Refutation
        • K(a);P-FLIGHT,P_SPINS(c)
  • Actual
    • R(B);
    • Vars
      • K(a);S_CUTS(b),S_CUTS(c),S_FLIGHT::QAB1(H)
      • K(a);N_GUARD,P-FLIGHT,P_SPINS(b),S_CUTS(c)::R(A)
      • S(b);SBLOCK::P(E)
      • S(b);::QAB1(H),XS(c)
      • S(b);SBLOCK::S(G)
      • S(c);SBLOCK::P(E)
      • S(c);OGATE::QAB1(H),XS(b)
      • S(c);SBLOCK::S(F)
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