MESON Chess Problem Database

Problem Display
PID: 42527 (1n1B4/3p4/3P4/1k1N4/4pQ2/KN6/BR6/8 w - - 0 1)

Fothergill, Percival Guy Laugham (PGLF)

Recomm., BCF 033. Ty., 1939-1940

1n1B4/3p4/3P4/1k1N4/4pQ2/KN6/BR6/8

#2

8 + 4

SOLUTION

  • SOUND
  • Sets
    • 1...Sc6
      • 2.Qf1#
    • 1...e3
      • 2.Qa4#
  • Tries
    • 1.Sd4+?
      • 1...Kc5
        • 2.Bb6#
      • 1...Ka6!
    • 1.Sa5+?
      • 1...Kc5
        • 2.Bb6#
      • 1...Ka6!
    • 1.Rc2?
      • threat
        • 2.Qf1#
      • 1...e3
        • 2.Qa4#
        • 2.Qc4#
      • 1...Ka6!
  • Keys
    • 1.Bb6!
      • 1...Kc4
        • 2.Sc1#
      • 1...Ka6
        • 2.Sc5#
      • 1...Kc6
        • 2.Sa5#
      • 1...Sa6
        • 2.Sd4#
      • 1...Sc6
        • 2.Qf1#
      • 1...e3
        • 2.Qa4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • S(d);SBLOCK::QAB(E)
    • P(a);OGATE::QAB1(E)
  • Tries
    • Try
      • S(D);CHECK
      • Vars
        • K(b);P-FLIGHT::B(H)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • S(D);CHECK
      • Vars
        • K(b);P-FLIGHT::B(H)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • R(B);
      • Threat
        • QAB(E)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • B(H);
    • Vars
      • K(b);P_SPINP(a),S_FLIGHT::B(A)+S(D)
      • K(b);S_FLIGHT::S(D)
      • S(d);SBLOCK::R(B)+S(D),DCHECK
      • S(d);SBLOCK::QAB(E)
      • P(a);OGATE::QAB1(E)
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