MESON Chess Problem Database

Problem Display
PID: 151190 (8/5Q2/8/8/1B4pb/3KN1np/2PPB3/R1Nqk3 w - - 0 1)

Fothergill, Percival Guy Laugham (PGLF)

Hampstead and Highgate Express, 1896

(First published on Sat Oct 24 1896)

8/5Q2/8/8/1B4pb/3KN1np/2PPB3/R1Nqk3

#2

9 + 6

14867 BCPS Library 2014

SOLUTION

  • SOUND
  • Sets
    • 1...Qxc2+
      • 2.Sxc2#
    • 1...Qxe2+
      • 2.Sxe2#
    • 1...Qxc1
      • 2.Rxc1#
    • 1...Qxd2+
      • 2.Bxd2#
    • 1...Sf1
      • 2.Qxf1#
    • 1...Sh1
      • 2.Qf1#
    • 1...Sxe2
      • 2.Qf1#
    • 1...Se4
      • 2.Qf1#
    • 1...Sh5
      • 2.Qf1#
    • 1...h2
      • 2.Sg2#
  • Tries
    • 1.Qf3?
      • 1...Qxc2+
        • 2.Sxc2#
      • 1...Qxe2+
        • 2.Sxe2#
      • 1...Qxd2+
        • 2.Bxd2#
      • 1...Qxc1
        • 2.Rxc1#
      • 1...Sxe2
        • 2.Qf1#
      • 1...Bg5
        • 2.Qxg3#
      • 1...Bf6
        • 2.Qxg3#
      • 1...Be7
        • 2.Qxg3#
      • 1...Bd8
        • 2.Qxg3#
      • 1...Sf1
        • 2.Qxf1#
      • 1...Sh1
        • 2.Qf1#
      • 1...Se4
        • 2.Qf1#
      • 1...Sf5
        • 2.Qf1#
      • 1...Sh5
        • 2.Qf1#
      • 1...h2
        • 2.Sg2#
      • 1...gxf3!
  • Keys
    • 1.Qf4!
      • 1...Qxc2+
        • 2.Sxc2#
      • 1...Qxe2+
        • 2.Sxe2#
      • 1...Qxd2+
        • 2.Bxd2#
      • 1...Qxc1
        • 2.Rxc1#
      • 1...Sxe2
        • 2.Qf1#
      • 1...Bg5
        • 2.Qxg3#
      • 1...Bf6
        • 2.Qxg3#
      • 1...Be7
        • 2.Qxg3#
      • 1...Bd8
        • 2.Qxg3#
      • 1...Sf1
        • 2.Qxf1#
      • 1...Sh1
        • 2.Qf1#
      • 1...Se4
        • 2.Qf1#
      • 1...Sf5
        • 2.Qf1#
      • 1...Sh5
        • 2.Qf1#
      • 1...h2
        • 2.Sg2#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • Q(a);CHECK,N_PINP(D),XP(C)::S(G),XQ(a)
    • Q(a);CHECK,N_PINP(D),XB(E)::R(A)+S(B),XQ(a)
    • Q(a);N_PINP(D),OGATE,P_SPINQ(a),XS(B)::R(A),XQ(a)
    • Q(a);CHECK,OGATE,P_SPINQ(a),XP(D)::B(H),XQ(a)
    • S(c);N_GUARD::QAR1(I),XS(c)
    • S(c);N_GUARD::QAR1(I)
    • S(c);N_GUARD,XB(E)::QAR1(I)
    • P(d);N_GUARD::S(G)
  • Tries
    • Try
      • Q(I);
      • Vars
        • Q(a);CHECK,N_PINP(D),XP(C)::S(G),XQ(a)
        • Q(a);CHECK,N_PINP(D),XB(E)::R(A)+S(B),XQ(a)
        • Q(a);CHECK,OGATE,P_SPINQ(a),XP(D)::B(H),XQ(a)
        • Q(a);N_PINP(D),OGATE,P_SPINQ(a),XS(B)::R(A),XQ(a)
        • S(c);N_GUARD,XB(E)::QAR1(I)
        • B(f);N_GUARD::QAB(I),XS(c)
        • S(c);N_GUARD::QAR1(I),XS(c)
        • S(c);N_GUARD::QAR1(I)
        • P(d);N_GUARD::S(G)
      • Refutation
        • P(e);XQ(I)
  • Actual
    • Q(I);
    • Vars
      • Q(a);CHECK,N_PINP(D),XP(C)::S(G),XQ(a)
      • Q(a);CHECK,N_PINP(D),XB(E)::R(A)+S(B),XQ(a)
      • Q(a);CHECK,OGATE,P_SPINQ(a),XP(D)::B(H),XQ(a)
      • Q(a);N_PINP(D),OGATE,P_SPINQ(a),XS(B)::R(A),XQ(a)
      • S(c);N_GUARD,XB(E)::QAR1(I)
      • B(f);N_GUARD::QAB(I),XS(c)
      • S(c);N_GUARD::QAR1(I),XS(c)
      • S(c);N_GUARD::QAR1(I)
      • P(d);N_GUARD::S(G)
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