Problem Display
PID: 251724 (8/3K2p1/8/2pN4/3Bk1P1/1B3N2/2p1P3/4b3 w - - 0 1)

Felber, Stefan

Die Schwalbe, 2021

8/3K2p1/8/2pN4/3Bk1P1/1B3N2/2p1P3/4b3

#3

7 + 5


SOLUTION


  • SOUND
  • Sets
    • 1...c4
      • 2.Bxc2+
        • 2...Kxd5
          • 3.e4#
  • Tries
    • 1.Kc6?
      • threat
        • 2.Bxc2#
      • 1...cxd4
        • 2.Bxc2+
          • 2...d3
            • 3.Bxd3#
      • 1...c1S
        • 2.Bc2+
          • 2...Sd3
            • 3.Bxd3#
      • 1...c1R
        • 2.Bxg7
          • threat
            • 3.Sg5#
          • 2...Bd2
            • 3.Sxd2#
          • 2...Bh4
            • 3.Sd2#
      • 1...c1Q!
    • 1.Ke6?
      • threat
        • 2.Bxc2#
      • 1...c1S
        • 2.Bc2+
          • 2...Sd3
            • 3.Bxd3#
      • 1...c1R
        • 2.Be3
          • threat
            • 3.Sg5#
          • 2...Bh4
            • 3.Sd2#
          • 2...g5
            • 3.Sxg5#
        • 2.Be5
          • threat
            • 3.Sg5#
          • 2...Bd2
            • 3.Sxd2#
          • 2...Bh4
            • 3.Sd2#
          • 2...g5
            • 3.Sxg5#
        • 2.Bxg7
          • threat
            • 3.Sg5#
          • 2...Bd2
            • 3.Sxd2#
          • 2...Bh4
            • 3.Sd2#
      • 1...c1Q!
  • Keys
    • 1.Bc4!
      • threat
        • 2.Bd3+
          • 2...Kxd5
            • 3.e4#
      • 1...cxd4
        • 2.Ke6
          • threat
            • 3.Sg5#
            • 3.Bd3#
          • 2...d3
            • 3.Bxd3#
      • 1...c1S
        • 2.Bxg7
          • threat
            • 3.Sg5#
          • 2...Bd2
            • 3.Sxd2#
          • 2...Bh4
            • 3.Sd2#

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).