Problem Display
PID: 269663 (8/p7/P7/p1Bkp1K1/P7/3N3Q/8/8 w - - 0 1)

Petrasinovic, Petrasin

4th HM., Phenix, 2017

8/p7/P7/p1Bkp1K1/P7/3N3Q/8/8

#4

6 + 4


SOLUTION


  • SOUND
  • Keys
    • 1.Qh2!
      • threat
        • 2.Qa2+
          • 2...Ke4
            • 3.Qc4+
              • 3...Kf3
                • 4.Qg4#
          • 2...Kc6
            • 3.Qf7
              • 3...e4
                • 4.Qb7#
      • 1...Kc4
        • 2.Qc2+
          • 2...Kd5
            • 3.Qb3+
              • 3...Ke4
                • 4.Sf2#
              • 3...Kc6
                • 4.Qb7#
      • 1...Ke4
        • 2.Qc2
          • threat
            • 3.Sf4+
              • 3...Kf3
                • 4.Qd3#
                • 4.Qg2#
            • 3.Qc4+
              • 3...Kf3
                • 4.Qg4#
          • 2...Kf3
            • 3.Se1+
              • 3...Kg3
                • 4.Qg2#
          • 2...Kd5
            • 3.Qb3+
              • 3...Ke4
                • 4.Sf2#
              • 3...Kc6
                • 4.Qb7#
      • 1...Kc6
        • 2.Qh7
          • threat
            • 3.Qb7#
          • 2...Kd5
            • 3.Qf7+
              • 3...Ke4
                • 4.Sf2#
              • 3...Kc6
                • 4.Qb7#
      • 1...Ke6
        • 2.Qh7
          • threat
            • 3.Sf4+
              • 3...exf4
                • 4.Qf5#
          • 2...Kd5
            • 3.Qf7+
              • 3...Ke4
                • 4.Sf2#
              • 3...Kc6
                • 4.Qb7#
      • 1...e4
        • 2.Qe5+
          • 2...Kc4
            • 3.Sc1
              • 3...e3
                • 4.Qd4#

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).