MESON Chess Problem Database

Problem Display
PID: 117077 (4r3/1Q6/2B4q/3N1p2/8/4Pk1p/5N1B/5K2 w - - 0 1)

Krizhanivsky, Vasil Viktorovich

Koster, 1988

4r3/1Q6/2B4q/3N1p2/8/4Pk1p/5N1B/5K2

#2

7 + 5

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Keys
    • 1.Qb3!
      • threat
        • 2.Qd1#
      • 1...Qxe3
        • 2.Se7#
      • 1...Rxe3
        • 2.Sf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Actual
    • Q(G);
    • Threat
      • QAB(G)
    • Vars
      • Q(d);N_GUARD,P_SPINQ(d),XP(D)::B(F)+S(E)
      • R(e);N_GUARD,P_SPINR(e),XP(D)::B(F)+S(E)
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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).