MESON Chess Problem Database

Problem Display
PID: 222741 (7k/2pp1p1p/5P1p/p3p2P/p3P3/8/KPP5/6R1 w - - 0 1)

de Jong, Leonard Nicholaas

British Chess Magazine, 1930

7k/2pp1p1p/5P1p/p3p2P/p3P3/8/KPP5/6R1

#4

7 + 9

SOLUTION

  • COOKED
  • Keys
    • 1.Rb1!
      • threat
        • 2.b4
          • threat
            • 3.bxa5
              • threat
                • 4.Rb8#
              • 3...Kg8
                • 4.Rb8#
          • 2...axb4 ep+
            • 3.Rxb3
              • threat
                • 4.Rb8#
              • 3...Kg8
                • 4.Rb8#
          • 2...Kg8
            • 3.bxa5
              • threat
                • 4.Rb8#
              • 3...Kf8
                • 4.Rb8#
              • 3...Kh8
                • 4.Rb8#
          • 2...axb4
            • 3.Rxb4
              • threat
                • 4.Rb8#
              • 3...Kg8
                • 4.Rb8#
      • 1...Kg8
        • 2.b4
          • threat
            • 3.bxa5
              • threat
                • 4.Rb8#
              • 3...Kf8
                • 4.Rb8#
              • 3...Kh8
                • 4.Rb8#
          • 2...axb4 ep+
            • 3.Rxb3
              • threat
                • 4.Rb8#
              • 3...Kf8
                • 4.Rb8#
              • 3...Kh8
                • 4.Rb8#
          • 2...Kf8
            • 3.bxa5
              • threat
                • 4.Rb8#
              • 3...Ke8
                • 4.Rb8#
              • 3...Kg8
                • 4.Rb8#
          • 2...Kh8
            • 3.bxa5
              • threat
                • 4.Rb8#
              • 3...Kg8
                • 4.Rb8#
          • 2...axb4
            • 3.Rxb4
              • threat
                • 4.Rb8#
              • 3...Kf8
                • 4.Rb8#
              • 3...Kh8
                • 4.Rb8#
      • 1...c5
        • 2.Rd1
          • threat
            • 3.Rxd7
              • threat
                • 4.Rd8#
              • 3...Kg8
                • 4.Rd8#
          • 2...Kg8
            • 3.Rxd7
              • threat
                • 4.Rd8#
              • 3...Kf8
                • 4.Rd8#
              • 3...Kh8
                • 4.Rd8#
          • 2...d5
            • 3.Rxd5
              • threat
                • 4.Rd8#
              • 3...Kg8
                • 4.Rd8#
          • 2...d6
            • 3.Rxd6
              • threat
                • 4.Rd8#
              • 3...Kg8
                • 4.Rd8#
    • 1.Rd1!
      • threat
        • 2.Rxd7
          • threat
            • 3.Rd8#
          • 2...Kg8
            • 3.Rd8#
      • 1...d6
        • 2.Rd5
          • threat
            • 3.Rxa5
              • threat
                • 4.Ra8#
              • 3...Kg8
                • 4.Ra8#
            • 3.Rb5
              • threat
                • 4.Rb8#
              • 3...Kg8
                • 4.Rb8#
          • 2...Kg8
            • 3.Rxa5
              • threat
                • 4.Ra8#
              • 3...Kf8
                • 4.Ra8#
              • 3...Kh8
                • 4.Ra8#
            • 3.Rb5
              • threat
                • 4.Rb8#
              • 3...Kf8
                • 4.Rb8#
              • 3...Kh8
                • 4.Rb8#
          • 2...c5
            • 3.Rxd6
              • threat
                • 4.Rd8#
              • 3...Kg8
                • 4.Rd8#

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).