Problem Display
PID: 88976 (8/4p3/2p3p1/4R1P1/2Nk4/2pP4/2K5/8 w - - 0 1)

Oppenheimer, Otto

American Chess Problemist, 1950

8/4p3/2p3p1/4R1P1/2Nk4/2pP4/2K5/8

#4

5 + 5


6490 yacpdb 2009

SOLUTION


  • SOUND
  • Keys
    • 1.Ra5!
      • 1...c5
        • 2.Ra6
          • 2...Kd5
            • 3.Kxc3
              • 3...e5
                • 4.Se3#
                • 4.Rd6#
              • 3...e6
                • 4.Rd6#
      • 1...e5
        • 2.Rxe5
          • 2...c5
            • 3.Re6
              • 3...Kd5
                • 4.Rd6#
      • 1...e6
        • 2.Re5
          • 2...c5
            • 3.Rxe6
              • 3...Kd5
                • 4.Rd6#

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).