Problem Display
PID: 73088 (4N1Kn/1r2p2p/1pNP1P2/1P1P1p2/2B1kp2/5p2/2P2B2/8 w - - 0 1)

Haefele, Hans Frieder

6th Prize, Deutsche Schachzeitung, 1974

4N1Kn/1r2p2p/1pNP1P2/1P1P1p2/2B1kp2/5p2/2P2B2/8

#4

10 + 9


3690 Kunstschach in der Schweiz 1980
1101 BCSC Final 1989-1990
5503 ISC 2008

SOLUTION


  • SOUND
  • Keys
    • 1.Kg7!
      • threat
        • 2.fxe7
          • threat
            • 3.Sf6#
          • 2...Rxe7+
            • 3.dxe7
              • threat
                • 4.Sd6#
                • 4.Sf6#
      • 1...exd6+
        • 2.f7
          • threat
            • 3.Sxd6#
            • 3.Sf6#
          • 2...Rxf7+
            • 3.Kh6
              • threat
                • 4.Sxd6#
              • 3...Rf6+
                • 4.Sxf6#
              • 3...Rd7
                • 4.Sf6#
      • 1...exf6+
        • 2.Kh6
          • threat
            • 3.Sxf6#
          • 2...Sf7+
            • 3.Kh5
              • threat
                • 4.Sxf6#
          • 2...Rf7
            • 3.d7
              • threat
                • 4.Sd6#
              • 3...Rxd7
                • 4.Sxf6#
      • 1...e5+
        • 2.Se7
          • threat
            • 3.Bd3#
          • 2...Rxe7+
            • 3.fxe7
              • threat
                • 4.Sf6#
      • 1...e6+
        • 2.Kxh8
          • threat
            • 3.Bd3+
              • 3...Kxd5
                • 4.c4#
          • 2...e5
            • 3.Sb4
              • threat
                • 4.Bd3#
      • 1...Ra7
        • 2.fxe7
          • threat
            • 3.Sf6#
          • 2...Rxe7+
            • 3.dxe7
              • threat
                • 4.Sd6#
                • 4.Sf6#
      • 1...Rd7
        • 2.fxe7
          • threat
            • 3.Sf6#
          • 2...Rxe7+
            • 3.dxe7
              • threat
                • 4.Sd6#
                • 4.Sf6#
      • 1...Rb8
        • 2.Sc7
          • threat
            • 3.Bd3#
          • 2...Rg8+
            • 3.Kxg8
              • threat
                • 4.Bd3#

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).