MESON Chess Problem Database

Problem Display
PID: 224561 (8/5Q1r/2p3p1/n3Bp2/8/3k2PR/1P2R3/5K2 w - - 0 1)

Fothergill, Percival Guy Laugham (PGLF)

The Field, 1894

(First published on Sat Oct 6 1894)

8/5Q1r/2p3p1/n3Bp2/8/3k2PR/1P2R3/5K2

#2

7 + 6

15239 Valois Notebooks 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Rh4
      • 2.gxh4#
    • 1...Rg7
      • 2.g4#
    • 1...Sb3
      • 2.Qxb3#
    • 1...Sb7
      • 2.Qb3#
    • 1...c5
      • 2.Qd5#
  • Keys
    • 1.b3!
      • 1...Rxh3
        • 2.Qd7#
      • 1...Rxf7
        • 2.g4#
      • 1...Sxb3
        • 2.Qxb3#
      • 1...f4
        • 2.Qxg6#
      • 1...Rh4
        • 2.gxh4#
      • 1...Rh5
        • 2.Qd7#
      • 1...Rh6
        • 2.Qd7#
      • 1...Rg7
        • 2.g4#
      • 1...Rh8
        • 2.Qd7#
      • 1...Sc4
        • 2.Qxc4#
      • 1...Sb7
        • 2.Qc4#
      • 1...c5
        • 2.Qd5#
      • 1...g5
        • 2.Qxf5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
    • R(f);OGATE::R(E)+P(D),XR(f)
    • R(f);N_GUARD::R(E)+P(D)
    • S(b);N_GUARD::QAR2(G),XS(b)
    • S(b);N_GUARD::QAR2(G)
    • P(d);N_GUARD::QAR2(G)
  • Actual
    • P(B);
    • Vars
      • R(f);N_GUARD,XR(E)::QAR(G)
      • R(f);N_GUARD,XQ(G)::R(E)+P(D)
      • S(b);OGATE,XP(B)::QAR2(G),XS(b)
      • P(c);OGATEB::QAB(G),XP(e)
      • R(f);OGATE::R(E)+P(D),XR(f)
      • R(f);N_GUARD::QAR(G)
      • R(f);N_GUARD::R(E)+P(D)
      • S(b);N_GUARD::QAB1(G),XS(b)
      • S(b);N_GUARD::QAB1(G)
      • P(d);N_GUARD::QAR2(G)
      • P(e);N_GUARD::QAB(G),XP(c)
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