MESON Chess Problem Database

Problem Display
PID: 253145 (2Bn4/1RQ2p2/3Rp3/K3p3/1p2kp1N/pp3p2/Pb4n1/5N2 w - - 0 1)

Fothergill, Percival Guy Laugham (PGLF)

The Field, 1910

(First published on Sat Mar 12 1910)

2Bn4/1RQ2p2/3Rp3/K3p3/1p2kp1N/pp3p2/Pb4n1/5N2

#2

8 + 12

15239 Valois Notebooks 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Bc1
      • 2.Rxb4#
      • 2.Qc4#
    • 1...Se3
      • 2.Sd2#
    • 1...Sc6+
      • 2.Qxc6#
    • 1...Sxb7+
      • 2.Bxb7#
      • 2.Qxb7#
    • 1...bxa2
      • 2.Qc2#
  • Tries
    • 1.Bxe6?
      • threat
        • 2.Bf5#
      • 1...Sc6+
        • 2.Qxc6#
      • 1...Sxb7+
        • 2.Qxb7#
      • 1...Sxe6
        • 2.Qc6#
      • 1...fxe6
        • 2.Qh7#
      • 1...Se3
        • 2.Sd2#
      • 1...f5
        • 2.Bxf5#
      • 1...Sxh4!
    • 1.Qc3?
      • threat
        • 2.Sd2#
        • 2.Rxb4#
        • 2.Qd3#
        • 2.Qxf3#
      • 1...Sc6+
        • 2.Qxc6#
      • 1...Sxb7+
        • 2.Bxb7#
      • 1...Sxh4
        • 2.Qd3#
      • 1...bxc3
        • 2.Rb4#
      • 1...Bc1
        • 2.Rxb4#
        • 2.Qxb4#
        • 2.Qd3#
        • 2.Qxf3#
        • 2.Qc4#
      • 1...Se1
        • 2.Sd2#
        • 2.Rxb4#
        • 2.Qxe1#
      • 1...Se3
        • 2.Sd2#
        • 2.Qd3#
      • 1...f2
        • 2.Sd2#
        • 2.Rxb4#
        • 2.Qd3#
        • 2.Qf3#
      • 1...Bxc3!
  • Keys
    • 1.Qc1!
      • threat
        • 2.Qb1#
      • 1...Sc6+
        • 2.Qxc6#
      • 1...Sxb7+
        • 2.Bxb7#
      • 1...Bxc1
        • 2.Rxb4#
      • 1...bxa2
        • 2.Qc2#
      • 1...Se1
        • 2.Qxe1#
      • 1...Se3
        • 2.Sd2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • S(b);SBLOCK::S(A)
    • S(l);CHECK,N_GUARD::QAB(G),XS(l)
    • P(d);N_GUARD,XP(B)::QAB(G)
  • Tries
    • Try
      • B(H);XP(j)
      • Threat
        • B(H)
      • Vars
        • S(l);CHECK,N_GUARD::QAB(G),XS(l)
        • S(l);CHECK,OGATE,XR(F)::QAB(G),XS(l)
        • S(l);N_GUARD,XB(H)::QAB(G)
        • P(k);OGATE,XB(H)::QAB(G)
        • S(b);SBLOCK::S(A)
        • P(k);::B(H),XP(k)
      • Refutation
        • S(b);XS(C)
    • Try
      • Q(G);
      • Threat
        • DUALS(4)
      • Vars
        • S(l);CHECK,N_GUARD::QAB(G),XS(l)
        • S(l);CHECK,OGATE,XR(F)::B(H),XS(l)
        • S(b);XS(C)::QAB1(G)
        • P(f);XQ(G)::R(F)
      • Refutation
        • B(a);XQ(G)
  • Actual
    • Q(G);
    • Threat
      • QAB(G)
    • Vars
      • S(l);CHECK,N_GUARD::QAB(G),XS(l)
      • S(l);CHECK,OGATE,XR(F)::B(H),XS(l)
      • B(a);N_GUARD,XQ(G)::R(F),XP(f)
      • P(d);N_GUARD,XP(B)::QAB(G)
      • S(b);N_GUARD::QAR(G),XS(b)
      • S(b);SBLOCK::S(A)
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