Problem Display
PID: 220992 (8/2p5/p7/p7/P1Q5/k7/8/Kb6 w - - 0 1)

Speckmann, Werner

Deutsche Schachzeitung, 1979

8/2p5/p7/p7/P1Q5/k7/8/Kb6

#4

3 + 5


6490 yacpdb 2020

SOLUTION


  • SOUND
  • Keys
    • 1.Kxb1!
      • threat
        • 2.Kc2
          • threat
            • 3.Qb3#
      • 1...c5
        • 2.Qa2+
          • 2...Kb4
            • 3.Kb2
              • 3...c4
                • 4.Qa3#
        • 2.Qd3+
          • 2...Kxa4
            • 3.Ka2
              • threat
                • 4.Qc4#
                • 4.Qb3#
              • 3...Kb4
                • 4.Qb3#
              • 3...c4
                • 4.Qxc4#
            • 3.Kb2
              • threat
                • 4.Qc4#
                • 4.Qb3#
              • 3...Kb4
                • 4.Qb3#
              • 3...c4
                • 4.Qxc4#
          • 2...Kb4
            • 3.Ka2
              • threat
                • 4.Qb3#
              • 3...Kxa4
                • 4.Qc4#
                • 4.Qb3#
              • 3...c4
                • 4.Qa3#
            • 3.Kb2
              • threat
                • 4.Qb3#
              • 3...Kxa4
                • 4.Qc4#
                • 4.Qb3#
              • 3...c4
                • 4.Qa3#

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).