MESON Chess Problem Database

Problem Display
PID: 230892 (4n3/qR6/k3N3/p1P5/8/5B2/2Q3p1/5bK1 w - - 0 1)

Fothergill, Percival Guy Laugham (PGLF)

The Field, 1898

(First published on Sat May 28 1898)

4n3/qR6/k3N3/p1P5/8/5B2/2Q3p1/5bK1

#2

6 + 6

15239 Valois Notebooks 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qxc5+
      • 2.Sxc5#
    • 1...Be2
      • 2.Qxe2#
    • 1...Bd3
      • 2.Qxd3#
    • 1...Bc4
      • 2.Qxc4#
    • 1...Sd6
      • 2.Sc7#
    • 1...Sf6
      • 2.Sc7#
    • 1...Sc7
      • 2.Sxc7#
    • 1...Sg7
      • 2.Sc7#
    • 1...a4
      • 2.Qxa4#
  • Tries
    • 1.Rxa7+?
      • 1...Kb5
        • 2.Qb3#
      • 1...Kxa7!
  • Keys
    • 1.Qb3!
      • 1...Qxc5+
        • 2.Sxc5#
      • 1...Qxb7
        • 2.Qxb7#
      • 1...a4
        • 2.Qxa4#
      • 1...Qb6
        • 2.Qxb6#
      • 1...Qb8
        • 2.Qb6#
      • 1...Qa8
        • 2.Qb6#
      • 1...Be2
        • 2.Bxe2#
      • 1...Bd3
        • 2.Qxd3#
      • 1...Bc4
        • 2.Qxc4#
      • 1...Bb5
        • 2.Qxb5#
      • 1...Sd6
        • 2.Sc7#
      • 1...Sf6
        • 2.Sc7#
      • 1...Sc7
        • 2.Sxc7#
      • 1...Sg7
        • 2.Sc7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • Q(e);CHECK,XP(D)::S(E),XQ(e)
    • B(a);N_GUARD::QAB(B),XB(a)
    • S(f);N_GUARD::S(E)
    • S(f);N_GUARD::S(E),XS(f)
    • P(c);OGATEB::QAR2(B),XP(c)
  • Tries
    • Try
      • R(F);CHECK,N_SPINP(D),XQ(e)
      • Vars
        • K(d);S_FLIGHT::QAR2(B)
      • Refutation
        • K(d);P-FLIGHT,XR(F)
  • Actual
    • Q(B);
    • Vars
      • Q(e);CHECK,XP(D)::S(E),XQ(e)
      • Q(e);N_PINP(D),OGATE,XR(F)::QAB1(B),XQ(e)
      • P(c);OGATEB::QAR2(B),XP(c)
      • Q(e);N_GUARD::QAR1(B),XQ(e)
      • Q(e);N_GUARD,N_PINP(D)::QAR1(B)
      • B(a);N_GUARD::B(C),XB(a)
      • B(a);N_GUARD::QAB(B),XB(a)
      • B(a);N_GUARD::QAB1(B),XB(a)
      • S(f);N_GUARD::S(E)
      • S(f);N_GUARD::S(E),XS(f)
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