Problem Display
PID: 217161 (8/8/6B1/p1kP4/2N5/4P3/1P4K1/6Q1 w - - 0 1)

Moller, Ferdinand Friedrich

Vasarnapi Ujsag, 1892

8/8/6B1/p1kP4/2N5/4P3/1P4K1/6Q1

#4

7 + 2


6490 yacpdb 2020

SOLUTION


  • SOUND
  • Keys
    • 1.Qa1!
      • threat
        • 2.Qxa5+
          • 2...Kxc4
            • 3.Bb1
              • 3...Kb3
                • 4.Qb5#
      • 1...Kb4
        • 2.Qxa5+
          • 2...Kb3
            • 3.Qc3+
              • 3...Ka2
                • 4.Qa3#
              • 3...Ka4
                • 4.Be8#
            • 3.Qb5+
              • 3...Ka2
                • 4.Qa4#
            • 3.Qc5
              • 3...Ka2
                • 4.Qa3#
              • 3...Ka4
                • 4.Bc2#
          • 2...Kxc4
            • 3.Bb1
              • 3...Kb3
                • 4.Qb5#
      • 1...Kxc4
        • 2.Qxa5
          • 2...Kb3
            • 3.Qc3+
              • 3...Ka2
                • 4.Qa3#
              • 3...Ka4
                • 4.Be8#
      • 1...Kb5
        • 2.Qxa5+
          • 2...Kxc4
            • 3.Bb1
              • 3...Kb3
                • 4.Qb5#
      • 1...Kxd5
        • 2.Qa4
          • 2...Kc5
            • 3.Bf5
              • 3...Kd5
                • 4.Qb5#
            • 3.Be8
              • 3...Kd5
                • 4.Qc6#
          • 2...Ke6
            • 3.Qc6+
              • 3...Ke7
                • 4.Qd6#
      • 1...a4
        • 2.Qxa4
          • 2...Kxd5
            • 3.Bf7+
              • 3...Ke4
                • 4.Qc2#
              • 3...Kc5
                • 4.b4#

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).