MESON Chess Problem Database

Problem Display
PID: 221055 (8/2pp4/Kbprn3/2kN4/8/1P2P3/5P2/Q7 w - - 0 1)

Fothergill, Percival Guy Laugham (PGLF)

The Field, 1890

(First published on Sat Nov 8 1890)

8/2pp4/Kbprn3/2kN4/8/1P2P3/5P2/Q7

#2

6 + 7

15239 Valois Notebooks 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Rxd5
      • 2.Qa3#
    • 1...Ba5
      • 2.Qxa5#
    • 1...Ba7
      • 2.Qa5#
    • 1...Sd4
      • 2.Qxd4#
    • 1...Sf4
      • 2.Qd4#
    • 1...Sg5
      • 2.Qd4#
    • 1...Sg7
      • 2.Qd4#
    • 1...Sd8
      • 2.Qd4#
    • 1...Sf8
      • 2.Qd4#
    • 1...cxd5
      • 2.Qc3#
  • Tries
    • 1.Qa4?
      • threat
        • 2.Qc4#
      • 1...Rxd5
        • 2.Qa3#
      • 1...cxd5
        • 2.Qb5#
      • 1...Kxd5!
    • 1.f3?
      • 1...Rxd5
        • 2.Qa3#
      • 1...cxd5
        • 2.Qc3#
      • 1...Ba5
        • 2.Qxa5#
      • 1...Ba7
        • 2.Qa5#
      • 1...Sd4
        • 2.Qxd4#
      • 1...Sf4
        • 2.Qd4#
      • 1...Sg5
        • 2.Qd4#
      • 1...Sg7
        • 2.Qd4#
      • 1...Sd8
        • 2.Qd4#
      • 1...Sf8
        • 2.Qd4#
      • 1...Kxd5!
  • Keys
    • 1.f4!
      • 1...Kxd5
        • 2.Qe5#
      • 1...Rxd5
        • 2.Qa3#
      • 1...Sxf4
        • 2.Qd4#
      • 1...cxd5
        • 2.Qc3#
      • 1...Ba5
        • 2.Qxa5#
      • 1...Ba7
        • 2.Qa5#
      • 1...Sd4
        • 2.Qxd4#
      • 1...Sg5
        • 2.Qd4#
      • 1...Sg7
        • 2.Qd4#
      • 1...Sd8
        • 2.Qd4#
      • 1...Sf8
        • 2.Qd4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • R(d);SBLOCK,XS(E)::QAB(A)
    • B(b);N_GUARD::QAR2(A),XB(b)
    • B(b);N_GUARD::QAR2(A)
    • S(e);N_GUARD::QAB1(A),XS(e)
    • S(e);N_GUARD::QAB1(A)
    • P(c);SBLOCK,XS(E)::QAR2(A)
  • Tries
    • Try
      • Q(A);
      • Threat
        • QAR1(A)
      • Vars
        • R(d);SBLOCK,XS(E)::QAB(A)
        • P(c);N_GUARD,SBLOCK,XS(E)::QAR1(A)
      • Refutation
        • K(a);P-FLIGHT,XS(E)
    • Try
      • P(B);
      • Vars
        • R(d);SBLOCK,XS(E)::QAB(A)
        • P(c);SBLOCK,XS(E)::QAR2(A)
        • B(b);N_GUARD::QAR2(A),XB(b)
        • B(b);N_GUARD::QAR2(A)
        • S(e);N_GUARD::QAB1(A),XS(e)
        • S(e);N_GUARD::QAB1(A)
      • Refutation
        • K(a);P-FLIGHT,XS(E)
  • Actual
    • P(B);
    • Vars
      • K(a);OGATEB,P-FLIGHT,XS(E)::QAR1(A)
      • R(d);SBLOCK,XS(E)::QAB(A)
      • S(e);N_GUARD,XP(B)::QAB1(A)
      • P(c);SBLOCK,XS(E)::QAR2(A)
      • B(b);N_GUARD::QAR2(A),XB(b)
      • B(b);N_GUARD::QAR2(A)
      • S(e);N_GUARD::QAB1(A),XS(e)
      • S(e);N_GUARD::QAB1(A)
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