Problem Display
PID: 167262 (b3Q2b/8/2pp4/8/Pp1k1NK1/3Pp3/1P2P3/8 w - - 0 1)

Anonymous

East Central Times, 1890

b3Q2b/8/2pp4/8/Pp1k1NK1/3Pp3/1P2P3/8

#2

7 + 7


15 British Chess Magazine 1910

SOLUTION


  • SOUND
  • Sets
    • 1...c5
      • 2.Qxh8#
  • Keys
    • 1.Qb8!
      • threat
        • 2.Qxd6#
      • 1...Kc5
        • 2.Qa7#
      • 1...Ke5
        • 2.Qxh8#
      • 1...Be5
        • 2.Qxb4#
      • 1...c5
        • 2.Qxh8#
      • 1...d5
        • 2.Se6#

FEATURES


  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • P(d);SBLOCK::QAB(G),XB(g)
  • Actual
    • Q(G);
    • Threat
      • QAR2(G),XP(e)
    • Vars
      • K(c);S_FLIGHT::QAB(G)
      • K(c);P_SPINP(e),S_FLIGHT::QAB(G),XB(g)
      • B(g);SBLOCK::QAR2(G),XP(b)
      • P(d);SBLOCK::QAB(G),XB(g)
      • P(e);SBLOCK::S(E)


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).