MESON Chess Problem Database

Problem Display
PID: 157432 (8/8/R3NP1p/3p1knQ/3PN1p1/6p1/3P2K1/7n w - - 0 1)

Gleave, Walter

Leeds Mercury, 1894

8/8/R3NP1p/3p1knQ/3PN1p1/6p1/3P2K1/7n

#2

8 + 7

15351 SCPF/BCPS Black Books 2016

SOLUTION

  • SOUND
  • Sets
    • 1...Kxe4
      • 2.Qg6#
  • Tries
    • 1.Qxg5+?
      • 1...Kxe4
        • 2.Qg6#
      • 1...hxg5!
    • 1.f7?
      • 1...Kxe4
        • 2.Qg6#
      • 1...dxe4
        • 2.f8Q#
        • 2.f8R#
      • 1...Sf2!
  • Keys
    • 1.Qxh6!
      • 1...Kxe4
        • 2.Qg6#
      • 1...Sxe4
        • 2.Sg7#
      • 1...Sxe6
        • 2.Sd6#
      • 1...dxe4
        • 2.Qxg5#
      • 1...Sf2
        • 2.Sxg3#
      • 1...Sf3
        • 2.Qh7#
      • 1...Sh3
        • 2.Qh7#
      • 1...Sf7
        • 2.Qh7#
      • 1...Sh7
        • 2.Qxh7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
    • K(e);N_SPINS(f),S_FLIGHT,XS(D)::QAB(E)
  • Tries
    • Try
      • Q(E);CHECK,XS(f)
      • Vars
        • K(e);S_FLIGHT,XS(D)::QAB(E)
      • Refutation
        • P(g);XQ(E)
    • Try
      • P(H);
      • Vars
        • K(e);N_SPINS(f),S_FLIGHT,XS(D)::QAB(E)
        • P(d);SBLOCK,XS(D)::P=Q
      • Refutation
        • S(a);
  • Actual
    • Q(E);N_PINS(f),XP(g)
    • Vars
      • K(e);S_FLIGHT,XS(D)::QAB(E)
      • S(f);SBLOCK,XS(D)::S(G)
      • S(f);SBLOCK,XS(G)::S(D)
      • P(d);SBLOCK,XS(D)::QAR1(E),XS(f)
      • S(a);N_GUARD::S(D),XP(b)
      • S(f);N_GUARD::QAB(E)
      • S(f);N_GUARD::QAB(E),XS(f)
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