MESON Chess Problem Database

Problem Display
PID: 230320 (6bk/4K3/4p3/6N1/3PN3/8/Q5R1/8 w - - 0 1)

Clugston, W

The Field, 1898

(First published on Sat Feb 12 1898)

6bk/4K3/4p3/6N1/3PN3/8/Q5R1/8

#2

6 + 3

15239 Valois Notebooks 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Bh7
      • 2.Sf7#
  • Tries
    • 1.Kf8?
      • 1...Bh7
        • 2.Sf7#
      • 1...e5
        • 2.Qxg8#
      • 1...Bf7!
    • 1.Sf7+?
      • 1...Kh7
        • 2.Sf6#
      • 1...Bxf7!
    • 1.Qf2?
      • threat
        • 2.Qf6#
      • 1...Kg7
        • 2.Qf6#
      • 1...Bh7
        • 2.Sf7#
      • 1...Bf7!
  • Keys
    • 1.Sf6!
      • 1...Kg7
        • 2.Sf7#
      • 1...Bf7
        • 2.Sxf7#
      • 1...Bh7
        • 2.Sf7#
      • 1...e5
        • 2.Qxg8#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • B(b);N_GUARD,SBLOCK::S(E)
  • Tries
    • Try
      • K(F);S_FLIGHT
      • Vars
        • B(b);N_GUARD,SBLOCK::S(E)
        • P(a);OGATE::QAR1(A),XB(b)
      • Refutation
        • B(b);
    • Try
      • S(E);CHECK
      • Vars
        • K(c);P-FLIGHT::S(D)
      • Refutation
        • B(b);XS(E)
    • Try
      • Q(A);
      • Threat
        • QAB(A)
      • Vars
        • K(c);S_FLIGHT::QAB1(A)
        • B(b);N_GUARD,SBLOCK::S(E)
      • Refutation
        • B(b);
  • Actual
    • S(D);
    • Vars
      • K(c);S_FLIGHT::R(B)+S(E)
      • B(b);N_GUARD::S(E),XB(b)
      • B(b);N_GUARD::S(E)
      • P(a);OGATE::QAR1(A),XB(b)
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