MESON Chess Problem Database

Problem Display
PID: 180817 (8/8/5Q2/3N1p2/3ppp2/4N3/2n1k1P1/3R2K1 w - - 0 1)

Akimov, Nikolai Nikolaevich

Sachmatija, 2017

8/8/5Q2/3N1p2/3ppp2/4N3/2n1k1P1/3R2K1

#2

6 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...dxe3
      • 2.Sc3#
  • Tries
    • 1.Qxd4?
      • threat
        • 2.Sc3#
        • 2.Sxf4#
        • 2.Qd2#
        • 2.Qc4#
      • 1...Sxe3
        • 2.Sc3#
        • 2.Sxf4#
        • 2.Qd2#
      • 1...fxe3
        • 2.Sc3#
        • 2.Sf4#
      • 1...Se1
        • 2.Sc3#
        • 2.Sxf4#
        • 2.Rd2#
        • 2.Qd2#
      • 1...Sa3
        • 2.Sc3#
        • 2.Sxf4#
        • 2.Qd2#
      • 1...Sb4
        • 2.Sc3#
        • 2.Sxf4#
        • 2.Qd2#
      • 1...f3
        • 2.Sc3#
        • 2.Sf4#
        • 2.Qd2#
        • 2.Qc4#
      • 1...Sxd4!
  • Keys
    • 1.Qh4!
      • threat
        • 2.Qf2#
      • 1...Sxe3
        • 2.Qe1#
      • 1...dxe3
        • 2.Sc3#
      • 1...fxe3
        • 2.Qh5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • P(c);N_GUARD,SBLOCK,XS(D)::S(E)
  • Tries
    • Try
      • Q(F);XP(c)
      • Threat
        • DUALS(4)
      • Refutation
        • S(a);XQ(F)
  • Actual
    • Q(F);
    • Threat
      • QAR1(F)
    • Vars
      • S(a);N_GUARD,XS(D)::QAR1(F)
      • P(c);N_GUARD,SBLOCK,XS(D)::S(E)
      • P(e);N_GUARD,XS(D)::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).