MESON Chess Problem Database

Problem Display
PID: 150732 (8/1N6/1PP2P2/3k4/6P1/5N2/4Q1B1/1K6 w - - 0 1)

Challenger, Alfred Clement

Hampstead and Highgate Express, 1896

(First published on Sat Jun 6 1896)

8/1N6/1PP2P2/3k4/6P1/5N2/4Q1B1/1K6

#2

9 + 1

14867 BCPS Library 2014

SOLUTION

  • SOUND
  • Tries
    • 1.Sa5?
      • threat
        • 2.Qe5#
      • 1...Kd6
        • 2.Qe5#
      • 1...Kc5!
    • 1.Sd8?
      • 1...Kd6
        • 2.Qe5#
      • 1...Kc5!
  • Keys
    • 1.Qb2!
      • 1...Kc4
        • 2.Se5#
      • 1...Ke4
        • 2.Qd4#
      • 1...Kxc6
        • 2.Se5#
      • 1...Ke6
        • 2.Sg5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(I);
      • Threat
        • QAR1(B)
      • Vars
        • K(a);P-FLIGHT::QAB1(B)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • S(I);
      • Vars
        • K(a);P-FLIGHT::QAB1(B)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • Q(B);
    • Vars
      • K(a);S_FLIGHT::S(D)
      • K(a);S_FLIGHT::QAR1(B)
      • K(a);S_FLIGHT,XP(G)::B(C)+S(D),DCHECK
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