MESON Chess Problem Database

Problem Display
PID: 282495 (8/8/8/8/2K5/1N3p2/1pk2n2/6Q1 w - - 0 1)

Kirichenko, Anatoly Yakovlevich

Za Ogneypori, 1990

8/8/8/8/2K5/1N3p2/1pk2n2/6Q1

#2

3 + 4

SOLUTION

  • SOUND
  • Sets
    • 1...Sd1
      • 2.Qg6#
    • 1...b1S
      • 2.Qc1#
    • 1...b1B
      • 2.Qc1#
  • Tries
    • 1.Qxf2+?
      • 1...Kd1
        • 2.Qd2#
      • 1...Kb1!
  • Keys
    • 1.Qe1!
      • threat
        • 2.Sd4#
      • 1...Sd1
        • 2.Qe4#
      • 1...b1Q
        • 2.Qd2#
      • 1...b1S
        • 2.Qc1#
      • 1...b1B
        • 2.Qd2#
        • 2.Qc1#
      • 1...b1R
        • 2.Qd2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • S(c);N_GUARD,SBLOCK::QAB(A)
    • P(a);N_GUARD::QAR1(A)
  • Tries
    • Try
      • Q(A);CHECK,XS(c)
      • Vars
        • K(b);N_GUARD,S_FLIGHT::QAR1(A)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • Q(A);
    • Threat
      • S(B)
    • Vars
      • S(c);N_GUARD,SBLOCK::QAB(A)
      • P(a);SBLOCK::QAR1(A)
      • P(a);N_GUARD::QAR1(A)
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).