MESON Chess Problem Database

Problem Display
PID: 136963 (8/5K2/4P1P1/2QnkBNR/3n1p1N/5P1P/3r4/8 w - - 0 1)

Janevski, Zivko

Liga Problemista, 1982/4

8/5K2/4P1P1/2QnkBNR/3n1p1N/5P1P/3r4/8

#2

10 + 5

6490 yacpdb 2010

SOLUTION

  • SOUND
  • Sets
    • 1...Sxf3
      • 2.Sgxf3#
  • Tries
    • 1.Be4?
      • threat
        • 2.Qxd5#
      • 1...Sxf3
        • 2.Shxf3#
      • 1...Sxe6
        • 2.Sxe6#
      • 1...Sc2
        • 2.Sh7#
      • 1...Se2
        • 2.Sh7#
      • 1...Sb3
        • 2.Sh7#
      • 1...Sb5
        • 2.Sh7#
      • 1...Sc6
        • 2.Sh7#
      • 1...Sf5!
  • Keys
    • 1.Se4!
      • threat
        • 2.Qd6#
      • 1...Sxf3
        • 2.Sxf3#
      • 1...Sxf5
        • 2.Rxf5#
      • 1...Sxe6
        • 2.Bxe6#
      • 1...Sc2
        • 2.Bg4#
      • 1...Se2
        • 2.Bg4#
      • 1...Sb3
        • 2.Bg4#
      • 1...Sb5
        • 2.Bg4#
      • 1...Sc6
        • 2.Bg4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
    • S(b);XP(A)::S(F),XS(b)
  • Tries
    • Try
      • B(E);
      • Threat
        • QAR1(D),XS(d)
      • Vars
        • S(b);XP(A)::S(C),XS(b)
        • S(b);XP(H)::R(G)+S(F),XS(b)
        • S(b);N_GUARD::R(G)+S(F)
      • Refutation
        • S(b);
  • Actual
    • S(F);
    • Threat
      • QAB1(D)
    • Vars
      • S(b);XP(A)::S(C),XS(b)
      • S(b);OGATE,XB(E)::R1(G),XS(b)
      • S(b);OGATE,XP(H)::R(G)+B(E),XS(b)
      • S(b);N_GUARD::R(G)+B(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).