Problem Display
PID: 253379 (7n/4Kp2/Npk3p1/p5p1/p5P1/P2P4/6p1/4R1B1 w - - 0 1)

Kozinka, Jan

Pravda (Bratislava), 1968

7n/4Kp2/Npk3p1/p5p1/p5P1/P2P4/6p1/4R1B1

#4

7 + 9


6490 yacpdb 2021

SOLUTION


  • SOUND
  • Keys
    • 1.Rb1!
      • threat
        • 2.Rxb6+
          • 2...Kd5
            • 3.Rd6+
              • 3...Ke5
                • 4.Bh2#
      • 1...Kd5
        • 2.Sb8
          • threat
            • 3.Rb5#
          • 2...Ke5
            • 3.Be3
              • threat
                • 4.Rb5#
              • 3...Kd5
                • 4.Rb5#
              • 3...b5
                • 4.Rxb5#
      • 1...Kb7
        • 2.Rxb6+
          • 2...Ka7
            • 3.Kf6
              • 3...Ka8
                • 4.Rb8#
            • 3.Sc7
              • threat
                • 4.Rb1#
                • 4.Rb2#
                • 4.Rb3#
                • 4.Rb4#
                • 4.Rb5#
      • 1...b5
        • 2.Rc1+
          • 2...Kb7
            • 3.Rc7+
              • 3...Kxa6
                • 4.Ra7#
              • 3...Ka8
                • 4.Ra7#
      • 1...f5
        • 2.Rxb6+
          • 2...Kd5
            • 3.Kf6
              • threat
                • 4.Sc7#
            • 3.Re6
              • threat
                • 4.Sc7#
      • 1...f6
        • 2.Rxb6+
          • 2...Kd5
            • 3.Rd6+
              • 3...Ke5
                • 4.Bh2#
            • 3.Kxf6
              • 3...Sf7
                • 4.Sc7#
            • 3.Re6
              • threat
                • 4.Sc7#

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).