Problem Display
PID: 257168 (K1Rn4/7P/kP5r/PpP1PP2/1P6/8/8/8 w - - 0 1)

Rozenfeld, Isai Hillel

64 Shakhmatnoe obozrenie, 1975

K1Rn4/7P/kP5r/PpP1PP2/1P6/8/8/8

#4

9 + 4


6490 yacpdb 2022

SOLUTION


  • SOUND
  • Keys
    • 1.b7!
      • threat
        • 2.b8S#
      • 1...Sxb7
        • 2.Rc7
          • threat
            • 3.Rxb7
              • threat
                • 4.Ra7#
              • 3...Rxh7
                • 4.Rb6#
          • 2...Rb6
            • 3.c6
              • 3...Rxc6
                • 4.Rxc6#
              • 3...Sxa5
                • 4.Ra7#
              • 3...Sc5
                • 4.Ra7#
              • 3...Sd6
                • 4.Ra7#
              • 3...Sd8
                • 4.Ra7#
          • 2...Rd6
            • 3.exd6
              • threat
                • 4.Rc6#
              • 3...Sxa5
                • 4.Ra7#
              • 3...Sd8
                • 4.Ra7#
          • 2...Re6
            • 3.fxe6
              • threat
                • 4.Rc6#
              • 3...Sxa5
                • 4.Ra7#
              • 3...Sd8
                • 4.Ra7#
          • 2...Rf6
            • 3.exf6
              • threat
                • 4.Rc6#
              • 3...Sxa5
                • 4.Ra7#
              • 3...Sd8
                • 4.Ra7#
          • 2...Rg6
            • 3.fxg6
              • threat
                • 4.Rc6#
              • 3...Sxa5
                • 4.Ra7#
              • 3...Sd8
                • 4.Ra7#
      • 1...Rb6
        • 2.b8S+
          • 2...Rxb8+
            • 3.Kxb8
              • 3...Sc6+
                • 4.Rxc6#
              • 3...Se6
                • 4.Rc6#
              • 3...Sb7
                • 4.Rc6#
              • 3...Sf7
                • 4.Rc6#
        • 2.Rxd8
          • threat
            • 3.Rd6
              • threat
                • 4.Rxb6#
                • 4.b8S#
          • 2...Rxb7
            • 3.Rd6+
              • 3...Rb6
                • 4.Rxb6#
        • 2.b8Q
          • threat
            • 3.Qa7#
            • 3.Qxb6#
          • 2...Rxb8+
            • 3.Kxb8
              • 3...Sc6+
                • 4.Rxc6#
              • 3...Se6
                • 4.Rc6#
              • 3...Sb7
                • 4.Rc6#
              • 3...Sf7
                • 4.Rc6#
          • 2...Rb7
            • 3.Rc6+
              • 3...Rb6
                • 4.Rxb6#
                • 4.Qa7#
                • 4.Qxb6#
              • 3...Sxc6
                • 4.Qxb7#
            • 3.Qxb7+
              • 3...Sxb7
                • 4.Rc6#

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).