Problem Display
PID: 181977 (8/8/1p4Q1/N7/kP1p4/8/8/3K4 w - - 0 1)

Prikryl, Bohuzlav

Lidove noviny, 1906

8/8/1p4Q1/N7/kP1p4/8/8/3K4

#4

4 + 3


6490 yacpdb 2018

SOLUTION


  • SOUND
  • Keys
    • 1.Kc2!
      • 1...d3+
        • 2.Qxd3
          • threat
            • 3.Sc6
              • 3...b5
                • 4.Qb3#
            • 3.Sb7
              • 3...Kxb4
                • 4.Qb3#
              • 3...b5
                • 4.Qb3#
          • 2...Kxb4
            • 3.Sb7
              • threat
                • 4.Qb3#
              • 3...Ka4
                • 4.Qb3#
          • 2...bxa5
            • 3.Qc4
              • 3...Ka3
                • 4.Qb3#
              • 3...axb4
                • 4.Qa6#
      • 1...Ka3
        • 2.Qd3+
          • 2...Ka2
            • 3.Qb3+
              • 3...Ka1
                • 4.Qa4#
                • 4.Qb1#
                • 4.Qb2#
                • 4.Qa3#
            • 3.Sc4
              • threat
                • 4.Qa3#
              • 3...Ka1
                • 4.Qa3#
          • 2...Ka4
            • 3.Sc6
              • 3...b5
                • 4.Qb3#
            • 3.Sb7
              • 3...Kxb4
                • 4.Qb3#
              • 3...b5
                • 4.Qb3#
          • 2...Kxb4
            • 3.Sb7
              • threat
                • 4.Qb3#
              • 3...Ka4
                • 4.Qb3#
      • 1...Kxb4
        • 2.Qxb6+
          • 2...Ka4
            • 3.Kd3
              • 3...Ka3
                • 4.Qb3#
      • 1...Kb5
        • 2.Qd3+
          • 2...Ka4
            • 3.Sc6
              • 3...b5
                • 4.Qb3#
            • 3.Sb7
              • 3...Kxb4
                • 4.Qb3#
              • 3...b5
                • 4.Qb3#
          • 2...Kxb4
            • 3.Sb7
              • threat
                • 4.Qb3#
              • 3...Ka4
                • 4.Qb3#
      • 1...bxa5
        • 2.Qb6
          • threat
            • 3.Qxa5#
          • 2...d3+
            • 3.Kb2
              • threat
                • 4.Qxa5#
              • 3...axb4
                • 4.Qa6#
            • 3.Kc3
              • threat
                • 4.Qxa5#
              • 3...axb4+
                • 4.Qxb4#
              • 3...Ka3
                • 4.Qxa5#
      • 1...b5
        • 2.Qd3
          • 2...Kxb4
            • 3.Sb7
              • 3...Ka4
                • 4.Qb3#

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).