MESON Chess Problem Database

Problem Display
PID: 192686 (1B5b/7N/6p1/5k1n/K1NP2q1/6nB/8/4Q3 w - - 0 1)

Shire, David J

The Problemist, 1981

1B5b/7N/6p1/5k1n/K1NP2q1/6nB/8/4Q3

#2

7 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Be5
      • 2.Qxe5#
    • 1...Sf4
      • 2.Sd6#
    • 1...Sf6
      • 2.Qe5#
    • 1...Sg7
      • 2.Qe5#
  • Keys
    • 1.d5!
      • threat
        • 2.Qe6#
      • 1...Be5
        • 2.Qxe5#
      • 1...Se2
        • 2.Qb1#
      • 1...Se4
        • 2.Se3#
      • 1...Sf4
        • 2.Sd6#
      • 1...Sg7
        • 2.Qe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • B(f);N_GUARD::QAR1(A),XB(f)
    • S(d);SBLOCK::S(D)
    • S(d);S_CUTB(f)::QAR1(A)
  • Actual
    • P(E);P_SPINS(D)
    • Threat
      • QAB1(A)
    • Vars
      • B(f);N_GUARD::QAR1(A),XB(f)
      • S(a);N_GUARD::QAB(A)
      • S(a);N_PINS(D),SBLOCK::S(D)
      • S(d);N_PINS(D),SBLOCK::S(D)
      • S(d);S_CUTB(f)::QAR1(A)
HTML5 logo

Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) & CSS/Javascript (jQuery, Bootstrap & DataTables).