Problem Display
PID: 274301 (4K3/5p2/5P2/3k2B1/2N5/8/Q4P2/8 w - - 0 1)

Petrasinovic, Petrasin

Phenix, 2023

4K3/5p2/5P2/3k2B1/2N5/8/Q4P2/8

#4

6 + 2


SOLUTION


  • SOUND
  • Keys
    • 1.Qb3!
      • 1...Kd4
        • 2.Sb6
          • threat
            • 3.Qe3#
          • 2...Kc5
            • 3.Kd7
              • 3...Kd4
                • 4.Qe3#
      • 1...Ke4
        • 2.Se3
          • threat
            • 3.Qd5#
          • 2...Kf3
            • 3.Qa2
              • 3...Ke4
                • 4.Qd5#
          • 2...Kd4
            • 3.Qc4+
              • 3...Ke5
                • 4.Qd5#
      • 1...Kc5
        • 2.Kd7
          • threat
            • 3.Be3+
              • 3...Kd5
                • 4.Qd3#
            • 3.Sb6
              • 3...Kd4
                • 4.Qe3#
          • 2...Kd4
            • 3.Sb6
              • threat
                • 4.Qe3#
              • 3...Ke4
                • 4.Qd5#
              • 3...Kc5
                • 4.Be3#
              • 3...Ke5
                • 4.Qd5#
          • 2...Kd5
            • 3.Sb6+
              • 3...Kd4
                • 4.Qe3#
              • 3...Ke4
                • 4.Qd5#
              • 3...Kc5
                • 4.Be3#
              • 3...Ke5
                • 4.Qd5#
      • 1...Kc6
        • 2.Be3
          • 2...Kd5
            • 3.Qb5+
              • 3...Ke4
                • 4.Sd2#
              • 3...Ke6
                • 4.Qe5#
          • 2...Kc7
            • 3.Qb6+
              • 3...Kc8
                • 4.Sd6#
      • 1...Ke6
        • 2.Se3+
          • 2...Kd6
            • 3.Qc4
              • 3...Ke5
                • 4.Qd5#

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).