MESON Chess Problem Database

Problem Display
PID: 155629 (8/1Qn5/1n3P2/3NP3/3Pk1P1/2P1N3/4K3/8 w - - 0 1)

Lukyanov, Valentin Volodimirovich

3rd Place, Ukrainian Championship, 1978

8/1Qn5/1n3P2/3NP3/3Pk1P1/2P1N3/4K3/8

#2

9 + 3

133 The Problemist Supplement 2015

SOLUTION

  • SOUND
  • Sets
    • 1...Sa4
      • 2.Qb1#
    • 1...Sc4
      • 2.Qb1#
    • 1...Sd7
      • 2.Qb1#
    • 1...Sba8
      • 2.Qb1#
    • 1...Sc8
      • 2.Qb1#
    • 1...Sb5
      • 2.Qh7#
    • 1...Sa6
      • 2.Qh7#
    • 1...Se6
      • 2.Qh7#
    • 1...Sca8
      • 2.Qh7#
    • 1...Se8
      • 2.Qh7#
  • Keys
    • 1.Sg2!
      • 1...Sbxd5
        • 2.Qb1#
      • 1...Scxd5
        • 2.Qh7#
      • 1...Sa4
        • 2.Sxc7#
      • 1...Sc4
        • 2.Sxc7#
      • 1...Sd7
        • 2.Sxc7#
      • 1...Sba8
        • 2.Sxc7#
      • 1...Sc8
        • 2.Sxc7#
      • 1...Sb5
        • 2.Sxb6#
      • 1...Sa6
        • 2.Sxb6#
      • 1...Se6
        • 2.Sxb6#
      • 1...Sca8
        • 2.Sxb6#
      • 1...Se8
        • 2.Sxb6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 10
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • S(b);OGATE::QAB(I)
    • S(c);OGATE::QAB(I)
  • Actual
    • S(C);
    • Vars
      • S(b);OGATE,P_SPINS(b),SBLOCK,XS(F)::QAB(I)
      • S(c);OGATE,P_SPINS(c),SBLOCK,XS(F)::QAB(I)
      • S(b);N_GUARD::QAB(I)+S(F),XS(c)
      • S(c);N_GUARD::QAB(I)+S(F),XS(b)
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).