MESON Chess Problem Database

Problem Display
PID: 258625 (n7/3RK1pp/1pk5/4p3/N1B1p1R1/3p1Q2/5n2/8 w - - 0 1)

Fothergill, Percival Guy Laugham (PGLF)

English Mechanic and World of Science, 1901

(First published on Fri Dec 6 1901)

n7/3RK1pp/1pk5/4p3/N1B1p1R1/3p1Q2/5n2/8

#2

6 + 9

15239 Valois Notebooks 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Sd1
      • 2.Qxe4#
    • 1...Sh1
      • 2.Qxe4#
    • 1...Sh3
      • 2.Qxe4#
    • 1...Sxg4
      • 2.Qxe4#
    • 1...b5
      • 2.Bd5#
    • 1...g5
      • 2.Qf6#
    • 1...g6
      • 2.Qf6#
    • 1...h5
      • 2.Rg6#
    • 1...h6
      • 2.Rg6#
  • Keys
    • 1.Ba6!
      • 1...Sxg4
        • 2.Qxe4#
      • 1...exf3
        • 2.Rc4#
      • 1...Sd1
        • 2.Qxe4#
      • 1...Sh1
        • 2.Qxe4#
      • 1...Sh3
        • 2.Qxe4#
      • 1...Sc7
        • 2.Rd6#
      • 1...d2
        • 2.Qc3#
      • 1...b5
        • 2.Bb7#
      • 1...g5
        • 2.Qf6#
      • 1...g6
        • 2.Qf6#
      • 1...h5
        • 2.Rg6#
      • 1...h6
        • 2.Rg6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • S(a);N_GUARD::QAB(A),XP(c)
    • S(a);N_GUARD,XR(D)::QAB(A),XP(c)
    • P(e);SBLOCK::B(C)
    • P(g);N_GUARD::QAR(A)
    • P(h);N_GUARD::R(D)
  • Actual
    • B(C);
    • Vars
      • S(a);N_GUARD,XR(D)::QAB(A),XP(c)
      • P(c);N_SPINP(c),OGATE,XQ(A)::R(D)
      • S(a);N_GUARD::QAB(A),XP(c)
      • S(i);SBLOCK::R1(E)
      • P(b);OGATE::QAR(A)
      • P(e);SBLOCK::B(C)
      • P(g);N_GUARD::QAR(A)
      • P(h);N_GUARD::R(D)
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