MESON Chess Problem Database

Problem Display
PID: 151266 (1b6/6Q1/n1r2p2/P1k2N2/K3P3/p5R1/1p6/1n6 w - - 0 1)

Moon, James Frank

Hampstead and Highgate Express, 1896

(First published on Sat Oct 31 1896)

1b6/6Q1/n1r2p2/P1k2N2/K3P3/p5R1/1p6/1n6

#2

6 + 8

14867 BCPS Library 2014

SOLUTION

  • SOUND
  • Sets
    • 1...Sc3+
      • 2.Rxc3#
  • Tries
    • 1.Qd7?
      • threat
        • 2.Qd4#
        • 2.Qd5#
      • 1...Sc3+
        • 2.Rxc3#
      • 1...Kc4
        • 2.Qd4#
        • 2.Qd5#
      • 1...Rb6
        • 2.Qd5#
      • 1...Rd6
        • 2.Qb5#
      • 1...Re6
        • 2.Qb5#
        • 2.Qd5#
      • 1...Rc7
        • 2.Qb5#
        • 2.Qd5#
      • 1...Rc8
        • 2.Qb5#
        • 2.Qd5#
      • 1...Be5
        • 2.Qd5#
      • 1...Sb4
        • 2.Qd4#
      • 1...Sc7
        • 2.Qd4#
      • 1...Bd6!
  • Keys
    • 1.Qb7!
      • threat
        • 2.Qb5#
      • 1...Sc3+
        • 2.Rxc3#
      • 1...Kc4
        • 2.Qb5#
      • 1...Rb6
        • 2.Qd5#
      • 1...Sc7
        • 2.Qb4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • S(a);CHECK,N_GUARD::R(A),XS(a)
  • Tries
    • Try
      • Q(F);
      • Threat
        • DUALS(2)
      • Vars
        • S(a);CHECK,N_GUARD::R(A),XS(a)
        • R(f);::QAR1(F)
        • R(f);OGATE::QAR1(F)
        • B(h);::QAR1(F)
        • S(e);::QAB1(F)
      • Refutation
        • B(h);
  • Actual
    • Q(F);
    • Threat
      • QAR1(F)
    • Vars
      • S(a);CHECK,N_GUARD::R(A),XS(a)
      • K(d);P-FLIGHT::QAB1(F)
      • R(f);OGATE::QAR1(F)
      • S(e);N_GUARD::QAB1(F)
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