MESON Chess Problem Database

Problem Display
PID: 143666 (4K3/8/7B/8/4Q1p1/8/p2N1p2/3k1r2 w - - 0 1)

Harley, Brian

The Observer, 1938

(First published on Sun May 1 1938)

4K3/8/7B/8/4Q1p1/8/p2N1p2/3k1r2

#2

4 + 5

14868 Pirnie Collection 2012
15290 Harley Scrapbook 2014
15239 Valois Notebooks 2019

SOLUTION

  • SOUND
  • Keys
    • 1.Qd3!
      • threat
        • 2.Sf3#
      • 1...Re1+
        • 2.Se4#
      • 1...Kc1
        • 2.Sc4#
      • 1...Ke1
        • 2.Qxf1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Actual
    • Q(B);
    • Threat
      • QAR(B)+S(A)
    • Vars
      • R(b);CHECK,SBLOCK::QAR(B)+S(A)
      • K(a);P-FLIGHT::B(C)+S(A)
      • K(a);P-FLIGHT::QAR1(B),XR(b)
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