Problem Display
PID: 130220 (k7/2pN4/P1R5/8/8/5K2/8/8 w - - 0 1)

Jahn, Gunther

Turnier Forth, 1986

k7/2pN4/P1R5/8/8/5K2/8/8

#5

4 + 2


6490 yacpdb 2009

SOLUTION


  • SOUND
  • Keys
    • 1.Sf6!
      • threat
        • 2.Rxc7
          • 2...Kb8
            • 3.Sd5
              • 3...Ka8
                • 4.Sb6+
                  • 4...Kb8
                    • 5.Rb7#
        • 2.Sd5
          • threat
            • 3.Rxc7
              • 3...Kb8
                • 4.a7+
                  • 4...Ka8
                    • 5.Sb6#
          • 2...Ka7
            • 3.Sxc7
              • 3...Kb8
                • 4.Sb5
                  • 4...Ka8
                    • 5.Rc8#
          • 2...Kb8
            • 3.Rxc7
              • 3...Ka8
                • 4.Sb6+
                  • 4...Kb8
                    • 5.Rb7#
      • 1...Ka7
        • 2.Sd5
          • threat
            • 3.Sxc7
              • 3...Kb8
                • 4.Sb5
                  • 4...Ka8
                    • 5.Rc8#
          • 2...Ka8
            • 3.Rxc7
              • 3...Kb8
                • 4.a7+
                  • 4...Ka8
                    • 5.Sb6#
          • 2...Kb8
            • 3.Rxc7
              • 3...Ka8
                • 4.Sb6+
                  • 4...Kb8
                    • 5.Rb7#
      • 1...Kb8
        • 2.Sd5
          • threat
            • 3.Rxc7
              • 3...Ka8
                • 4.Sb6+
                  • 4...Kb8
                    • 5.Rb7#
          • 2...Ka7
            • 3.Sxc7
              • 3...Kb8
                • 4.Sb5
                  • 4...Ka8
                    • 5.Rc8#
          • 2...Ka8
            • 3.Rxc7
              • 3...Kb8
                • 4.a7+
                  • 4...Ka8
                    • 5.Sb6#
          • 2...Kc8
            • 3.Rxc7+
              • 3...Kb8
                • 4.a7+
                  • 4...Ka8
                    • 5.Sb6#
              • 3...Kd8
                • 4.a7
                  • 4...Ke8
                    • 5.a8Q#
                    • 5.a8R#

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).