MESON Chess Problem Database

Problem Display
PID: 270799 (8/1N1R4/8/K2N3R/n1pk4/4p3/8/bB6 w - - 0 1)

Eddy, Edwin John

The Observer, 1959

(First published on Sun Sep 27 1959)

8/1N1R4/8/K2N3R/n1pk4/4p3/8/bB6

#2

6 + 5

17397 Ling Notebooks 2023

SOLUTION

  • SOUND
  • Sets
    • 1...Bc3+
      • 2.Sb4#
    • 1...c3
      • 2.Sb6#
  • Keys
    • 1.Sd8!
      • threat
        • 2.Se6#
      • 1...Bc3+
        • 2.Sb4#
      • 1...Kc5
        • 2.Sc3#
      • 1...c3
        • 2.Sb6#
      • 1...Sc5
        • 2.Sc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • B(a);CHECK,SBLOCK::R(F)+S(C)
    • P(d);SBLOCK::R(F)+S(C)
  • Actual
    • S(E);
    • Threat
      • S(E)
    • Vars
      • B(a);CHECK,SBLOCK::R(F)+S(C)
      • K(e);N_GUARD,S_FLIGHT::R(D)+S(C)
      • P(d);SBLOCK::R(F)+S(C)
      • S(c);SBLOCK::S(E)
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