MESON Chess Problem Database

Problem Display
PID: 135869 (7Q/3p4/1K6/3Bp1B1/1NPk2p1/2pp1bR1/p2R1n2/n7 w - - 0 1)

Fothergill, Percival Guy Laugham (PGLF)

The Field, 1916

(First published on Sat Nov 25 1916)

7Q/3p4/1K6/3Bp1B1/1NPk2p1/2pp1bR1/p2R1n2/n7

#2

8 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Bd1
      • 2.Be3#
    • 1...Bh1
      • 2.Be3#
    • 1...Be2
      • 2.Be3#
    • 1...Bg2
      • 2.Be3#
    • 1...Be4
      • 2.Be3#
    • 1...Sc2
      • 2.Sxc2#
    • 1...Sb3
      • 2.Sc2#
    • 1...Sd1
      • 2.Rxd3#
    • 1...Sh1
      • 2.Rxd3#
    • 1...Sh3
      • 2.Rxd3#
    • 1...Se4
      • 2.Rxd3#
    • 1...d6
      • 2.Sc6#
  • Tries
    • 1.Bf4?
      • threat
        • 2.Qxe5#
      • 1...d6
        • 2.Sc6#
      • 1...Bxd5!
  • Keys
    • 1.Qh1!
      • 1...Bxh1
        • 2.Be3#
      • 1...Bxd5
        • 2.Qxd5#
      • 1...Sxh1
        • 2.Rxd3#
      • 1...cxd2
        • 2.Qxa1#
      • 1...c2
        • 2.Qxa1#
      • 1...e4
        • 2.Qh8#
      • 1...Bd1
        • 2.Be3#
      • 1...Be2
        • 2.Be3#
      • 1...Bg2
        • 2.Be3#
      • 1...Be4
        • 2.Be3#
      • 1...Sc2
        • 2.Sxc2#
      • 1...Sb3
        • 2.Sc2#
      • 1...Sd1
        • 2.Rxd3#
      • 1...Sh3
        • 2.Rxd3#
      • 1...Se4
        • 2.Rxd3#
      • 1...d6
        • 2.Sc6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • B(f);::B(F)
    • S(a);N_GUARD::S(C),XS(a)
    • S(a);N_GUARD::S(C)
    • S(c);N_GUARD::R1(A),XP(e)
    • P(j);N_GUARD::S(C)
  • Tries
    • Try
      • B(F);
      • Threat
        • QAB1(H),XP(i)
      • Vars
        • P(j);N_GUARD::S(C)
      • Refutation
        • B(f);XB(E)
  • Actual
    • Q(H);
    • Vars
      • B(f);XQ(H)::B(F)
      • B(f);OGATE,XB(E)::QAR1(H),XB(f)
      • S(c);N_GUARD,XQ(H)::R1(A),XP(e)
      • P(d);N_SPINP(e),OGATEB,XR(A)::QAB(H),XS(a)
      • P(d);OGATEB::QAB(H),XS(a)
      • P(i);OGATEB::QAB(H)
      • B(f);::B(F)
      • S(a);N_GUARD::S(C),XS(a)
      • S(a);N_GUARD::S(C)
      • S(c);N_GUARD::R1(A),XP(e)
      • P(j);N_GUARD::S(C)
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