Problem Display
PID: 217934 (r1bR3R/8/4P3/8/8/8/2K5/k7 w - - 0 1)

Pochtarev, Konstantin Grigorevich

1st Prize, Vecherni Leningrad, 1973

r1bR3R/8/4P3/8/8/8/2K5/k7

#5

4 + 3


6490 yacpdb 2020

SOLUTION


  • SOUND
  • Keys
    • 1.Rh1+!
      • 1...Ka2
        • 2.Rd2
          • threat
            • 3.Kc3+
              • 3...Ka3
                • 4.Ra1#
          • 2...Ka3
            • 3.Kc3
              • threat
                • 4.Ra1#
              • 3...Ka4
                • 4.Rd5
                  • threat
                    • 5.Ra1#
                  • 4...Ka3
                    • 5.Ra1#
              • 3...Bxe6
                • 4.Ra1+
                  • 4...Ba2
                    • 5.Raxa2#
                    • 5.Rdxa2#
          • 2...Bxe6
            • 3.Kc3+
              • 3...Ka3
                • 4.Ra1+
                  • 4...Ba2
                    • 5.Raxa2#
                    • 5.Rdxa2#
          • 2...Ra3
            • 3.Rdd1
              • threat
                • 4.Ra1#
              • 3...Rc3+
                • 4.Kxc3
                  • threat
                    • 5.Ra1#
                  • 4...Ka3
                    • 5.Ra1#
          • 2...Rb8
            • 3.Kc3+
              • 3...Rb2
                • 4.Rxb2+
                  • 4...Ka3
                    • 5.Ra1#

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).