Problem Display
PID: 276546 (8/1K5n/5p2/2p1nRp1/8/1p4p1/kp3RQr/qN6 w - - 0 1)

Petri, Max

Schach, 1955

8/1K5n/5p2/2p1nRp1/8/1p4p1/kp3RQr/qN6

#5

5 + 11


6490 yacpdb 2024

SOLUTION


  • SOUND
  • Keys
    • 1.Qf1!
      • threat
        • 2.Sc3+
          • 2...Ka3
            • 3.Qa6+
              • 3...Kb4
                • 4.Sd5#
      • 1...Sd3
        • 2.Qxd3
          • threat
            • 3.Sc3+
              • 3...Ka3
                • 4.Qa6+
                  • 4...Kb4
                    • 5.Sd5#
            • 3.Rxc5
              • threat
                • 4.Ra5#
              • 3...Rh4
                • 4.Ra5+
                  • 4...Ra4
                    • 5.Rxa4#
            • 3.Rf1
              • threat
                • 4.Qa6#
              • 3...Rh4
                • 4.Qa6+
                  • 4...Ra4
                    • 5.Qxa4#
          • 2...Rh4
            • 3.Sc3+
              • 3...Ka3
                • 4.Qa6+
                  • 4...Kb4
                    • 5.Sd5#
                  • 4...Ra4
                    • 5.Qxa4#
      • 1...Sc4
        • 2.Qxc4
          • threat
            • 3.Sc3+
              • 3...Ka3
                • 4.Qa4#
                • 4.Qxc5#
          • 2...Rh4
            • 3.Sc3+
              • 3...Ka3
                • 4.Qa6+
                  • 4...Kb4
                    • 5.Sd5#
                  • 4...Ra4
                    • 5.Qxa4#
      • 1...c4
        • 2.Rxe5
          • threat
            • 3.Ra5#
          • 2...fxe5
            • 3.Rf8
              • threat
                • 4.Ra8#
              • 3...Sxf8
                • 4.Sc3+
                  • 4...Ka3
                    • 5.Qxf8#
              • 3...Rh6
                • 4.Ra8+
                  • 4...Ra6
                    • 5.Rxa6#

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).