Problem Display
PID: 230003 (8/3p4/1p6/kPP1Q3/8/K7/8/8 w - - 0 1)

Vollmer, Willi

Neue Leipziger Zeitung, 1934

8/3p4/1p6/kPP1Q3/8/K7/8/8

#4

4 + 3


6490 yacpdb 2021

SOLUTION


  • SOUND
  • Keys
    • 1.c6!
      • threat
        • 2.Qb2
          • threat
            • 3.Qb4#
      • 1...dxc6
        • 2.Kb3
          • threat
            • 3.Kc4
              • threat
                • 4.Qa1#
              • 3...cxb5+
                • 4.Qxb5#
              • 3...Ka4
                • 4.Qa1#
          • 2...c5
            • 3.Qa1+
              • 3...Kxb5
                • 4.Qa4#
            • 3.Kc4
              • 3...Ka4
                • 4.Qa1#
        • 2.Qa1
          • 2...Kxb5
            • 3.Kb3
              • 3...Kc5
                • 4.Qe5#
              • 3...c5
                • 4.Qa4#
          • 2...c5
            • 3.Kb3+
              • 3...Kxb5
                • 4.Qa4#
            • 3.Qb2
              • 3...c4
                • 4.Qb4#
            • 3.Qb1
              • 3...c4
                • 4.Qb4#
            • 3.Qd1
              • threat
                • 4.Qa4#
              • 3...Kxb5
                • 4.Qa4#
        • 2.Qf5
          • 2...cxb5
            • 3.Qd5
              • 3...Ka6
                • 4.Qa8#
          • 2...c5
            • 3.Qb1
              • 3...c4
                • 4.Qb4#
            • 3.Qc2
              • threat
                • 4.Qa4#
              • 3...Kxb5
                • 4.Qa4#
        • 2.Qh5
          • 2...cxb5
            • 3.Qd5
              • 3...Ka6
                • 4.Qa8#
          • 2...c5
            • 3.Qd1
              • threat
                • 4.Qa4#
              • 3...Kxb5
                • 4.Qa4#

FEATURES


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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).