Problem Display
PID: 257617 (7n/6Q1/2Np4/2k1P3/3N4/p7/Pp6/1K6 w - - 0 1)

Hentschel, Matthias

Troll, 2021

(First published on Wed Oct 13 2021)

7n/6Q1/2Np4/2k1P3/3N4/p7/Pp6/1K6

#4

6 + 5


SOLUTION


  • SOUND
  • Keys
    • 1.e6!
      • threat
        • 2.Qb7
          • threat
            • 3.Qb5#
          • 2...Kc4
            • 3.Qb3+
              • 3...Kc5
                • 4.Qb5#
          • 2...Kd5
            • 3.Qb3+
              • 3...Ke4
                • 4.Qf3#
              • 3...Kc5
                • 4.Qb5#
      • 1...Kc4
        • 2.Qg3
          • threat
            • 3.Qb3+
              • 3...Kc5
                • 4.Qb5#
          • 2...Kc5
            • 3.Qb3
              • threat
                • 4.Qb5#
              • 3...d5
                • 4.Qb4#
          • 2...Kd5
            • 3.Qb3+
              • 3...Ke4
                • 4.Qf3#
              • 3...Kc5
                • 4.Qb5#
          • 2...d5
            • 3.Qb3+
              • 3...Kc5
                • 4.Qb4#
      • 1...Kd5
        • 2.Qg3
          • threat
            • 3.Qb3+
              • 3...Ke4
                • 4.Qf3#
              • 3...Kc5
                • 4.Qb5#
          • 2...Kc4
            • 3.Qb3+
              • 3...Kc5
                • 4.Qb5#
          • 2...Kc5
            • 3.Qb3
              • threat
                • 4.Qb5#
              • 3...d5
                • 4.Qb4#
      • 1...Sf7
        • 2.Qxf7
          • 2...Kc4
            • 3.Qf5
              • 3...Kc3
                • 4.Qc2#
              • 3...d5
                • 4.Qc2#
          • 2...Kd5
            • 3.Qf1
              • 3...Ke4
                • 4.Qf3#
              • 3...Kc5
                • 4.Qb5#
          • 2...d5
            • 3.Qh7
              • 3...Kc4
                • 4.Qc2#
              • 3...Kb6
                • 4.Qa7#
              • 3...Kd6
                • 4.Qe7#
      • 1...d5
        • 2.Qb7
          • threat
            • 3.Qb4#
          • 2...Kc4
            • 3.Qb3+
              • 3...Kc5
                • 4.Qb4#

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).