MESON Chess Problem Database

Problem Display
PID: 258685 (n2R3n/BRb1p3/1p1N1p2/4kp2/2Q5/2K5/8/8 w - - 0 1)

Fothergill, Percival Guy Laugham (PGLF)

English Mechanic and World of Science, 1906

(First published on Fri Dec 14 1906)

n2R3n/BRb1p3/1p1N1p2/4kp2/2Q5/2K5/8/8

#2

6 + 8

15239 Valois Notebooks 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Bb8
      • 2.Rxe7#
    • 1...Sg6
      • 2.Sf7#
    • 1...Sf7
      • 2.Sxf7#
    • 1...f4
      • 2.Qe4#
    • 1...b5
      • 2.Rxb5#
    • 1...exd6
      • 2.Re8#
    • 1...e6
      • 2.Qd4#
  • Tries
    • 1.Rxc7?
      • threat
        • 2.Rxe7#
      • 1...exd6
        • 2.Re7#
        • 2.Re8#
      • 1...Sg6
        • 2.Sf7#
      • 1...e6
        • 2.Qd4#
      • 1...Sxc7!
    • 1.Qb5+?
      • 1...Ke6
        • 2.Qxf5#
      • 1...Kf4!
  • Keys
    • 1.Bb8!
      • 1...Bxd6
        • 2.Rxe7#
      • 1...Bxb8
        • 2.Rxe7#
      • 1...Bxd8
        • 2.Sf7#
      • 1...exd6
        • 2.Re8#
      • 1...Sg6
        • 2.Sf7#
      • 1...Sf7
        • 2.Sxf7#
      • 1...f4
        • 2.Qe4#
      • 1...b5
        • 2.Rxb5#
      • 1...e6
        • 2.Qd4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • B(e);OGATE::R(E),XP(f)
    • S(h);N_GUARD::S(C)
    • S(h);N_GUARD::S(C),XS(h)
    • P(b);N_GUARD::QAR1(B)
    • P(c);OGATE::R(E),XP(c)
    • P(f);OGATEB,SBLOCK,XS(C)::R(F)
    • P(f);SBLOCK::QAB1(B)
  • Tries
    • Try
      • R(E);XB(e)
      • Threat
        • R(E),XP(f)
      • Vars
        • S(h);N_GUARD::S(C)
        • P(f);SBLOCK::QAB1(B)
      • Refutation
        • S(g);XR(E)
    • Try
      • Q(B);CHECK
      • Vars
        • K(a);OGATE,P-FLIGHT::QAB1(B),XP(b)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • B(D);
    • Vars
      • B(e);OGATE,P_SPINB(e),XS(C)::R(E),XP(f)
      • B(e);OGATE,XB(D)::R(E),XP(f)
      • B(e);XR(F)::B(D)+S(C),DCHECK
      • P(f);OGATEB,SBLOCK,XS(C)::R(F)
      • S(h);N_GUARD::S(C)
      • S(h);N_GUARD::S(C),XS(h)
      • P(b);N_GUARD::QAR1(B)
      • P(c);OGATE::R(E),XP(c)
      • P(f);SBLOCK::QAB1(B)
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