MESON Chess Problem Database

Problem Display
PID: 151669 (8/8/8/2p5/ppn5/k7/8/K2Q4 w - - 0 1)

Fothergill, Percival Guy Laugham (PGLF)

Hampstead and Highgate Express, 1897

(First published on Sat Apr 10 1897)

8/8/8/2p5/ppn5/k7/8/K2Q4

#2

2 + 5

14867 BCPS Library 2014

SOLUTION

  • SOUND
  • Tries
    • 1.Qc2?
      • threat
        • 2.Qa2#
      • 1...Sb2
        • 2.Qxb2#
      • 1...b3!
    • 1.Qc1+?
      • 1...Sb2
        • 2.Qxb2#
      • 1...Kb3!
    • 1.Qd4?
      • 1...Kb3
        • 2.Qd3#
      • 1...b3
        • 2.Qxc5#
      • 1...Sb2
        • 2.Qxb2#
      • 1...Sd2
        • 2.Qb2#
      • 1...Se3
        • 2.Qb2#
      • 1...Sa5
        • 2.Qb2#
      • 1...Se5
        • 2.Qb2#
      • 1...Sb6
        • 2.Qb2#
      • 1...Sd6
        • 2.Qb2#
      • 1...cxd4!
  • Keys
    • 1.Qd5!
      • 1...Kb3
        • 2.Qd3#
      • 1...b3
        • 2.Qxc5#
      • 1...Sb2
        • 2.Qa2#
      • 1...Sd2
        • 2.Qa2#
      • 1...Se3
        • 2.Qa2#
      • 1...Sa5
        • 2.Qa2#
      • 1...Se5
        • 2.Qa2#
      • 1...Sb6
        • 2.Qa2#
      • 1...Sd6
        • 2.Qa2#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 9
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(B);
      • Threat
        • QAR1(B)
      • Vars
        • S(d);N_GUARD::QAB1(B),XS(d)
      • Refutation
        • P(c);
    • Try
      • Q(B);CHECK
      • Vars
        • S(d);N_GUARD,P_SPINS(d)::QAB1(B),XS(d)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(B);
      • Vars
        • K(a);P-FLIGHT::QAR2(B)
        • P(c);OGATEB,SBLOCK::QAB(B),XP(e)
        • S(d);N_GUARD::QAB1(B),XS(d)
        • S(d);N_GUARD::QAB1(B)
      • Refutation
        • P(e);XQ(B)
  • Actual
    • Q(B);
    • Vars
      • K(a);P-FLIGHT,P_SPINS(d)::QAR2(B)
      • P(c);OGATEB,SBLOCK::QAB(B),XP(e)
      • S(d);OGATE::QAR1(B)
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