MESON Chess Problem Database

Problem Display
PID: 187602 (8/5rq1/7p/1Q4p1/3kp1N1/8/4rP2/1N4BK w - - 0 1)

Kubbel, Leonid Ivanovich (AKA Kubbel, Karl Artur Leonid)

Deutsches Wochenschach, 1909

8/5rq1/7p/1Q4p1/3kp1N1/8/4rP2/1N4BK

#2

6 + 7

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Re3
      • 2.fxe3#
  • Keys
    • 1.Se3!
      • threat
        • 2.Qd5#
      • 1...Rexf2
        • 2.Sc2#
      • 1...Rxe3
        • 2.fxe3#
      • 1...Rfxf2
        • 2.Sf5#
      • 1...Qe5
        • 2.Qc4#
      • 1...Rf5
        • 2.Sxf5#
      • 1...Rd7
        • 2.Sf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • R(a);OGATE::P(D),XR(a)
  • Actual
    • S(E);
    • Threat
      • QAR1(F)
    • Vars
      • R(a);N_GUARD,XP(D)::S(E)
      • R(a);OGATE,XS(E)::P(D),XR(a)
      • R(f);N_GUARD,XP(D)::S(E)
      • Q(g);SBLOCK::QAR1(F)
      • R(f);N_GUARD::S(E),XR(f)
      • R(f);N_GUARD::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).