Problem Display
PID: 274309 (8/2B5/8/7K/P1pk4/7N/8/1Q6 w - - 0 1)

Petrasinovic, Petrasin

Seven Chess Notes, 2023

8/2B5/8/7K/P1pk4/7N/8/1Q6

#4

5 + 2


3713 Snap 2024

SOLUTION


  • SOUND
  • Keys
    • 1.Sg5!
      • threat
        • 2.Bb6+
          • 2...Kd5
            • 3.Qe4+
              • 3...Kd6
                • 4.Qe6#
          • 2...Ke5
            • 3.Qe4+
              • 3...Kd6
                • 4.Qe6#
              • 3...Kf6
                • 4.Bd4#
      • 1...Kc3
        • 2.Bf4
          • 2...Kd4
            • 3.Qb4
              • 3...Kd3
                • 4.Qd2#
              • 3...Kd5
                • 4.Qd6#
      • 1...Ke3
        • 2.Qc2
          • 2...Kd4
            • 3.Qd2+
              • 3...Kc5
                • 4.Qd6#
          • 2...c3
            • 3.Bd6
              • 3...Kd4
                • 4.Qe4#
      • 1...Kd5
        • 2.Qb6
          • 2...c3
            • 3.Qb5+
              • 3...Kd4
                • 4.Bb6#

Anticipated by 212065(2018)

FEATURES


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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).