MESON Chess Problem Database

Problem Display
PID: 263007 (6Q1/4N3/4P3/4k3/8/P5p1/1p4B1/1K6 w - - 0 1)

Petrasinovic, Petrasin

Schweizerische Schachzeitung, 2009

6Q1/4N3/4P3/4k3/8/P5p1/1p4B1/1K6

#4

6 + 3

3713 Snap 2023

SOLUTION

  • SOUND
  • Keys
    • 1.Qh7!
      • 1...Kd4
        • 2.Qe4+
          • 2...Kc3
            • 3.Qe3+
              • 3...Kc4
                • 4.Bf1#
      • 1...Kf4
        • 2.Qe4+
          • 2...Kg5
            • 3.Qf5+
              • 3...Kh4
                • 4.Sg6#
              • 3...Kh6
                • 4.Qg6#
      • 1...Kd6
        • 2.Sc6
          • threat
            • 3.Qe7#
          • 2...Kc5
            • 3.a4
              • 3...Kc4
                • 4.Qc2#
              • 3...Kb6
                • 4.Qa7#
              • 3...Kd6
                • 4.Qe7#
          • 2...Kxe6
            • 3.Be4
              • threat
                • 4.Qe7#
              • 3...Kd6
                • 4.Qe7#
              • 3...Kf6
                • 4.Qg6#
                • 4.Qe7#
      • 1...Kxe6
        • 2.Sg8
          • 2...Ke5
            • 3.Qe4+
              • 3...Kd6
                • 4.Qe7#
      • 1...Kf6
        • 2.Qf7+
          • 2...Ke5
            • 3.Sc6+
              • 3...Kd6
                • 4.Qe7#
          • 2...Kg5
            • 3.Qf5+
              • 3...Kh4
                • 4.Sg6#
              • 3...Kh6
                • 4.Qg6#

This anticipates 269587(2020)

FEATURES

NOT CLASSIFIED
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).