MESON Chess Problem Database

Problem Display
PID: 88749 (Q5nk/6N1/4K3/5B1N/8/8/8/6R1 w - - 0 1)

Lider, Valentin Viktorovich

Problemista, 1973

Q5nk/6N1/4K3/5B1N/8/8/8/6R1

#2

6 + 2

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Qh1?
      • 1...Sf6
        • 2.Sxf6#
      • 1...Se7
        • 2.Sf6#
      • 1...Sh6!
    • 1.Qa1?
      • 1...Sh6
        • 2.Se8#
      • 1...Se7
        • 2.Se8#
      • 1...Sf6!
  • Keys
    • 1.Se8!
      • 1...Sf6
        • 2.Sexf6#
      • 1...Sh6
        • 2.Qa1#
      • 1...Se7
        • 2.Qa1#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(F);N_PINS(a)
      • Vars
        • S(a);N_GUARD::QAR(F)+S(C),XS(a)
        • S(a);N_GUARD::QAR(F)+S(C)
      • Refutation
        • S(a);
    • Try
      • Q(F);N_PINS(a)
      • Vars
        • S(a);N_GUARD::QAB(F)+S(E)
      • Refutation
        • S(a);
  • Actual
    • S(E);N_PINS(a)
    • Vars
      • S(a);::QAR(F)+S(E),XS(a)
      • S(a);N_GUARD::QAB(F)
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).