MESON Chess Problem Database

Problem Display
PID: 151004 (1b1B4/1b2N3/4pp2/4k2p/BQ2p2K/2P5/8/8 w - - 0 1)

Fothergill, Percival Guy Laugham (PGLF)

The Field, 1894

(First published on Sat Jan 6 1894)

1b1B4/1b2N3/4pp2/4k2p/BQ2p2K/2P5/8/8

#2

6 + 7

15239 Valois Notebooks 2014

SOLUTION

  • SOUND
  • Sets
    • 1...Bd5
      • 2.Qxb8#
    • 1...Ba6
      • 2.Qxb8#
    • 1...Bc6
      • 2.Qxb8#
    • 1...Ba8
      • 2.Qxb8#
    • 1...Bc8
      • 2.Qxb8#
    • 1...Ba7
      • 2.Bc7#
    • 1...Bc7
      • 2.Bxc7#
    • 1...e3
      • 2.Qd4#
  • Tries
    • 1.Kg3?
      • threat
        • 2.Qd4#
      • 1...Bd5
        • 2.Qxb8#
      • 1...Ba7
        • 2.Bc7#
      • 1...h4+!
    • 1.Sg6+?
      • 1...Kd5
        • 2.Qd4#
      • 1...Kf5!
  • Keys
    • 1.Bc6!
      • 1...Kf4
        • 2.Qxe4#
      • 1...Bxc6
        • 2.Qxb8#
      • 1...f5
        • 2.Sg6#
      • 1...Ba6
        • 2.Qxb8#
      • 1...Ba8
        • 2.Qxb8#
      • 1...Bc8
        • 2.Qxb8#
      • 1...Bd6
        • 2.Qxe4#
      • 1...Ba7
        • 2.Bc7#
      • 1...Bc7
        • 2.Bxc7#
      • 1...e3
        • 2.Qd4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • B(f);OGATE::QAB(C),XB(g)
    • B(g);N_GUARD::B(F)
    • B(g);N_GUARD::B(F),XB(g)
    • P(a);::QAB1(C)
  • Tries
    • Try
      • K(D);S_FLIGHT
      • Threat
        • QAB1(C)
      • Vars
        • B(f);OGATE::QAB(C),XB(g)
        • B(g);N_GUARD::B(F)
      • Refutation
        • P(c);CHECK
    • Try
      • S(E);CHECK
      • Vars
        • K(b);P-FLIGHT::QAR1(C)
      • Refutation
        • K(b);P-FLIGHT
  • Actual
    • B(B);
    • Vars
      • K(b);P_SPINP(a),S_FLIGHT::QAR1(C),XP(a)
      • B(f);OGATE,XB(B)::QAB(C),XB(g)
      • P(e);SBLOCK::S(E)
      • B(f);OGATE::QAB(C),XB(g)
      • B(g);SBLOCK::QAR1(C),XP(a)
      • B(g);N_GUARD::B(F)
      • B(g);N_GUARD::B(F),XB(g)
      • P(a);::QAB1(C)
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