MESON Chess Problem Database

Problem Display
PID: 151206 (2Q5/1p3K2/b7/5p2/3k1B1n/2N1N3/2Pb2p1/5n2 w - - 0 1)

Jones, JJ

Pen & Pencil, 1887

(First published on Sat Dec 17 1887)

2Q5/1p3K2/b7/5p2/3k1B1n/2N1N3/2Pb2p1/5n2

#2

6 + 8

15239 Valois Notebooks 2014

SOLUTION

  • SOUND
  • Sets
    • 1...Bc4+
      • 2.Qxc4#
    • 1...Sf3
      • 2.Sxf5#
    • 1...Sg6
      • 2.Sxf5#
  • Tries
    • 1.Qd7+?
      • 1...Kc5
        • 2.Qd6#
      • 1...Kxc3!
    • 1.Qd8+?
      • 1...Kc5
        • 2.Qd6#
      • 1...Kxc3!
  • Keys
    • 1.Qc7!
      • threat
        • 2.Qe5#
      • 1...Bc4+
        • 2.Qxc4#
      • 1...Bxe3
        • 2.Be5#
      • 1...Sxe3
        • 2.Be5#
      • 1...Sf3
        • 2.Sxf5#
      • 1...Sg6
        • 2.Sxf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • B(g);CHECK,N_GUARD::QAR1(F),XB(g)
    • S(e);N_GUARD::S(C),XP(f)
  • Tries
    • Try
      • Q(F);CHECK
      • Vars
        • K(d);S_FLIGHT::QAB1(F)
      • Refutation
        • K(d);S_FLIGHT,XS(B)
    • Try
      • Q(F);CHECK
      • Vars
        • K(d);S_FLIGHT::QAB1(F)
      • Refutation
        • K(d);S_FLIGHT,XS(B)
  • Actual
    • Q(F);
    • Threat
      • QAB1(F)
    • Vars
      • B(g);CHECK,N_GUARD::QAR1(F),XB(g)
      • B(b);SBLOCK,XS(C)::B(D)
      • S(a);SBLOCK,XS(C)::B(D)
      • S(e);N_GUARD::S(C),XP(f)
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