Problem Display
PID: 177280 (2R1Kn2/Pp2pN2/1P1pk1r1/R2pPp1N/B2p4/6b1/1p3Pn1/5rq1 w - - 0 1)

Keller, Michael

4th Prize, Schach-Echo, 1975

2R1Kn2/Pp2pN2/1P1pk1r1/R2pPp1N/B2p4/6b1/1p3Pn1/5rq1

#4

10 + 14


6490 yacpdb 2018

SOLUTION


  • SOUND
  • Keys
    • 1.f4!
      • threat
        • 2.Sd8#
      • 1...Rxf4
        • 2.Bc6
          • threat
            • 3.Bxd5#
          • 2...bxc6
            • 3.a8S
              • threat
                • 4.Sc7#
          • 2...Se3
            • 3.a8S
              • threat
                • 4.Sc7#
            • 3.Rc7
              • threat
                • 4.Rxe7#
              • 3...Bh4
                • 4.Sxf4#
              • 3...Sd7
                • 4.Bxd7#
        • 2.Rc7
          • threat
            • 3.Rxe7#
          • 2...Bh4
            • 3.Bb3
              • threat
                • 4.Bxd5#
              • 3...Se3
                • 4.Sxf4#
      • 1...Bxf4
        • 2.Bb3
          • threat
            • 3.Bxd5#
          • 2...Se3
            • 3.a8S
              • threat
                • 4.Sc7#
              • 3...Rc1
                • 4.Sxf4#
        • 2.Bc6
          • threat
            • 3.Bxd5#
          • 2...bxc6
            • 3.a8S
              • threat
                • 4.Sc7#
          • 2...Se3
            • 3.a8S
              • threat
                • 4.Sc7#
      • 1...Sxf4
        • 2.a8S
          • threat
            • 3.Sc7#
          • 2...Rc1
            • 3.Rc7
              • threat
                • 4.Rxe7#
              • 3...Rxc7
                • 4.Sxc7#
              • 3...Bh4
                • 4.Sxf4#
              • 3...Sd7
                • 4.Bxd7#
      • 1...dxe5
        • 2.Sd8+
          • 2...Kd6
            • 3.Sxb7+
              • 3...Ke6
                • 4.Rc6#
        • 2.Rc6+
          • 2...bxc6
            • 3.a8S
              • threat
                • 4.Sc7#
        • 2.Rd8
          • threat
            • 3.Rd6+
              • 3...exd6
                • 4.Sd8#
            • 3.Rdxd5
              • threat
                • 4.Sd8#
                • 4.Rxe5#
            • 3.Rd7
              • threat
                • 4.Sd8#
                • 4.Rxe7#
              • 3...Sxd7
                • 4.Bxd7#
          • 2...exf4
            • 3.Rdxd5
              • threat
                • 4.Sd8#
                • 4.Re5#

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).