Problem Display
PID: 64794 (8/8/B3NQ2/8/1K6/p5p1/8/4k2n w - - 0 1)

Makaronets, Leonid

The Problemist Supplement, 2006

8/8/B3NQ2/8/1K6/p5p1/8/4k2n

#3

4 + 4


SOLUTION


  • SOUND
  • Tries
    • 1.Kc3?
      • threat
        • 2.Qf1#
      • 1...g2
        • 2.Qd4
          • threat
            • 3.Qg1#
            • 3.Qd2#
        • 2.Qf4
          • threat
            • 3.Qd2#
          • 2...Kd1
            • 3.Qd2#
      • 1...Sf2!
    • 1.Qa1+?
      • 1...Kf2
        • 2.Qf1+
          • 2...Ke3
            • 3.Qe2#
            • 3.Qf4#
      • 1...Kd2!
    • 1.Qc3+?
      • 1...Kd1
        • 2.Sd4
          • threat
            • 3.Be2#
        • 2.Sf4
          • threat
            • 3.Be2#
      • 1...Kf2!
    • 1.Qd4?
      • threat
        • 2.Kc3
          • threat
            • 3.Qg1#
            • 3.Qd2#
        • 2.Sf4
          • threat
            • 3.Sg2#
          • 2...g2
            • 3.Sxg2#
        • 2.Sg5
          • threat
            • 3.Sf3#
      • 1...a2
        • 2.Sf4
          • threat
            • 3.Sg2#
          • 2...g2
            • 3.Sxg2#
        • 2.Sg5
          • threat
            • 3.Sf3#
      • 1...g2
        • 2.Kc3
          • threat
            • 3.Qg1#
            • 3.Qd2#
      • 1...Sf2!
  • Keys
    • 1.Sf4!
      • threat
        • 2.Qd4
          • threat
            • 3.Sg2#
          • 2...g2
            • 3.Sxg2#
      • 1...Kd1
        • 2.Qc3
          • threat
            • 3.Be2#
      • 1...Kd2
        • 2.Qc3+
          • 2...Kd1
            • 3.Be2#
      • 1...Kf2
        • 2.Qd4+
          • 2...Ke1
            • 3.Sg2#
          • 2...Kf3
            • 3.Be2#
      • 1...Sf2
        • 2.Qc3+
          • 2...Kd1
            • 3.Be2#
      • 1...g2
        • 2.Qc3+
          • 2...Kd1
            • 3.Be2#
          • 2...Kf2
            • 3.Sh3#

FEATURES


NOT CLASSIFIED


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).