Problem Display
PID: 216981 (1K6/7b/5p1N/8/4kN2/8/3Q3P/8 w - - 0 1)

Lissner, Morris

Brownson's Chess Journal, 1891

1K6/7b/5p1N/8/4kN2/8/3Q3P/8

#4

5 + 3


6490 yacpdb 2020

SOLUTION


  • SOUND
  • Keys
    • 1.Sf7!
      • threat
        • 2.Sd6+
          • 2...Kf3
            • 3.Qe1
              • threat
                • 4.Qg3#
              • 3...Kxf4
                • 4.Qg3#
              • 3...Kg4
                • 4.Qg3#
          • 2...Ke5
            • 3.Qc3+
              • 3...Kxf4
                • 4.Qg3#
              • 3...Kxd6
                • 4.Qc7#
      • 1...Kf3
        • 2.Sd6
          • threat
            • 3.Qe1
              • threat
                • 4.Qg3#
              • 3...Kxf4
                • 4.Qg3#
              • 3...Kg4
                • 4.Qg3#
          • 2...Kg4
            • 3.Qg2+
              • 3...Kxf4
                • 4.Qg3#
              • 3...Kh4
                • 4.Qg3#
      • 1...Kf5
        • 2.Sd6+
          • 2...Kg4
            • 3.Qg2+
              • 3...Kxf4
                • 4.Qg3#
              • 3...Kh4
                • 4.Qg3#
          • 2...Ke5
            • 3.Qc3+
              • 3...Kxf4
                • 4.Qg3#
              • 3...Kxd6
                • 4.Qc7#
          • 2...Kg5
            • 3.Qg2+
              • 3...Kxf4
                • 4.Qg3#
              • 3...Kh4
                • 4.Qg3#
              • 3...Kh6
                • 4.Sf7#
      • 1...Bf5
        • 2.Sd6+
          • 2...Kf3
            • 3.Qe1
              • threat
                • 4.Qg3#
              • 3...Kxf4
                • 4.Qg3#
              • 3...Kg4
                • 4.Qg3#
          • 2...Ke5
            • 3.Sc4+
              • 3...Ke4
                • 4.Qe3#
            • 3.Qc3+
              • 3...Kxf4
                • 4.Qg3#
              • 3...Kxd6
                • 4.Qc7#

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).