MESON Chess Problem Database

Problem Display
PID: 258595 (k1K5/p7/8/1p6/4p3/3p4/1R6/3Q4 w - - 0 1)

Fothergill, Percival Guy Laugham (PGLF)

English Mechanic and World of Science, 1897

(First published on Fri Jun 18 1897)

k1K5/p7/8/1p6/4p3/3p4/1R6/3Q4

#2

3 + 5

15239 Valois Notebooks 2022

SOLUTION

  • SOUND
  • Sets
    • 1...e3
      • 2.Qf3#
      • 2.Qh1#
  • Tries
    • 1.Rxb5?
      • threat
        • 2.Rb8#
      • 1...a5
        • 2.Rxa5#
      • 1...a6!
    • 1.Qe1?
      • threat
        • 2.Qxe4#
      • 1...a5
        • 2.Qxa5#
      • 1...e3
        • 2.Qh1#
      • 1...a6!
  • Keys
    • 1.Qa4!
      • threat
        • 2.Qxe4#
      • 1...bxa4
        • 2.Rb8#
      • 1...a5
        • 2.Qxa5#
      • 1...a6
        • 2.Qxa6#
      • 1...e3
        • 2.Qe4#
      • 1...b4
        • 2.Qc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(B);XP(c)
      • Threat
        • R1(B)
      • Vars
        • P(d);OGATEB::R(B),XP(d)
      • Refutation
        • P(d);
    • Try
      • Q(A);
      • Threat
        • QAB(A),XP(b)
      • Vars
        • P(d);OGATEB::QAR(A),XP(d)
        • P(b);OGATEB::QAB(A)
      • Refutation
        • P(d);
  • Actual
    • Q(A);P_PINP(d)
    • Threat
      • QAB(A),XP(b)
    • Vars
      • P(c);N_SPINP(d),OGATE,XQ(A)::R1(B)
      • P(d);OGATEB::QAR(A),XP(d)
      • P(d);OGATEB::QAR2(A),XP(d)
      • P(b);::QAB(A)
      • P(c);OGATE::QAB(A)
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