MESON Chess Problem Database

Problem Display
PID: 160931 (kbNQ3n/p2pp3/p2N4/K7/8/8/8/8 w - - 0 1)

Williams, Philip Hamilton

Illustrated London News, 1905

(First published on Sat Nov 11 1905)

kbNQ3n/p2pp3/p2N4/K7/8/8/8/8

#2

4 + 7

15351 SCPF/BCPS Black Books 2017

SOLUTION

  • SOUND
  • Sets
    • 1...Bxd6
      • 2.Sxd6#
    • 1...Bc7+
      • 2.Sb6#
  • Tries
    • 1.Qxd7?
      • threat
        • 2.Qc6#
        • 2.Qb7#
      • 1...Bxd6
        • 2.Qxa7#
      • 1...exd6
        • 2.Qc6#
      • 1...Bc7+!
  • Keys
    • 1.Qg8!
      • threat
        • 2.Qd5#
        • 2.Qg2#
      • 1...Bc7+
        • 2.Sb6#
      • 1...Bxd6
        • 2.Sxd6#
      • 1...exd6
        • 2.Qd5#
      • 1...Sg6
        • 2.Qd5#
      • 1...Sf7
        • 2.Qg2#
      • 1...e5
        • 2.Qd5#
      • 1...e6
        • 2.Qg2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • B(f);XS(B)::QAR(D)+S(C),XB(f)
    • B(f);CHECK::QAR(D)+S(C),DCHECK
  • Tries
    • Try
      • Q(D);XP(c)
      • Threat
        • DUALS(2)
      • Vars
        • B(f);N_GUARD,XS(B)::QAR1(D),XP(b)
        • P(d);XS(B)::QAB(D)
      • Refutation
        • B(f);CHECK
  • Actual
    • Q(D);
    • Threat
      • DUALS(2)
    • Vars
      • B(f);CHECK::QAR(D)+S(C),DCHECK
      • B(f);XS(B)::QAR(D)+S(C),XB(f)
      • P(d);XS(B)::QAB(D)
      • S(g);::QAB(D)
      • P(d);::QAB(D)
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