Problem Display
PID: 246846 (8/8/3p4/3K1P2/8/2Nk4/6P1/4Q3 w - - 0 1)

Lindgren, Bo Waldemar

2nd Prize, Mach MT, 1956

8/8/3p4/3K1P2/8/2Nk4/6P1/4Q3

#4

5 + 2


6490 yacpdb 2021

SOLUTION


  • SOUND
  • Keys
    • 1.Qa1!
      • 1...Kc2
        • 2.Kd4
          • threat
            • 3.Qb1+
              • 3...Kd2
                • 4.Qd1#
          • 2...Kb3
            • 3.Qa2+
              • 3...Kb4
                • 4.Qa4#
      • 1...Kd2
        • 2.Kd4
          • threat
            • 3.Qd1#
          • 2...Kc2
            • 3.Qb1+
              • 3...Kd2
                • 4.Qd1#
      • 1...Ke3
        • 2.Se4
          • threat
            • 3.Qd1
              • 3...Kf4
                • 4.Qf3#
          • 2...Ke2
            • 3.Qc1
              • 3...Kd3
                • 4.Qd2#
          • 2...Kd3
            • 3.Qd1+
              • 3...Ke3
                • 4.Qf3#
                • 4.Qd2#
            • 3.Qb2
              • 3...Ke3
                • 4.Qd2#
            • 3.Qa2
              • 3...Ke3
                • 4.Qd2#
          • 2...Kf4
            • 3.Qc1+
              • 3...Kg4
                • 4.Qg5#
              • 3...Kxf5
                • 4.Qg5#

This is a version of 125728

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).