Problem Display
PID: 75386 (8/6K1/4r2p/2B5/8/1b6/k7/2Q5 w - - 0 1)

Lindgren, Bo Waldemar

3rd Prize, Die Schwalbe, 1977

8/6K1/4r2p/2B5/8/1b6/k7/2Q5

#5

3 + 4


56 The Problemist 2007

SOLUTION


  • SOUND
  • Keys
    • 1.Bd4!
      • threat
        • 2.Qb2#
        • 2.Qa1#
      • 1...Rg6+
        • 2.Kh8
          • threat
            • 3.Qb2#
            • 3.Qa1#
          • 2...Rg8+
            • 3.Kh7
              • threat
                • 4.Qb2#
                • 4.Qa1#
              • 3...Rg7+
                • 4.Kxg7
                  • threat
                    • 5.Qb2#
                    • 5.Qa1#
              • 3...Rh8+
                • 4.Kxh8
                  • threat
                    • 5.Qb2#
                    • 5.Qa1#
              • 3...Bc2+
                • 4.Qxc2+
                  • 4...Ka3
                    • 5.Bc5#
      • 1...Re7+
        • 2.Kf6
          • threat
            • 3.Qb2#
            • 3.Qa1#
          • 2...Re6+
            • 3.Kf5
              • threat
                • 4.Qb2#
                • 4.Qa1#
              • 3...Re5+
                • 4.Kxe5
                  • threat
                    • 5.Qb2#
                    • 5.Qa1#
              • 3...Rf6+
                • 4.Kxf6
                  • threat
                    • 5.Qb2#
                    • 5.Qa1#
              • 3...Bc2+
                • 4.Qxc2+
                  • 4...Ka3
                    • 5.Bc5#
          • 2...Rf7+
            • 3.Kg6
              • threat
                • 4.Qb2#
                • 4.Qa1#
              • 3...Rf6+
                • 4.Kxf6
                  • threat
                    • 5.Qb2#
                    • 5.Qa1#
              • 3...Rg7+
                • 4.Kxg7
                  • threat
                    • 5.Qb2#
                    • 5.Qa1#
              • 3...Bc2+
                • 4.Qxc2+
                  • 4...Ka3
                    • 5.Bc5#

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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).