Problem Display
PID: 270104 (8/3p4/2b5/K5N1/8/3Q4/6p1/4N2k w - - 0 1)

Valtonen, Kari

Tehtavaniekka, 2022

8/3p4/2b5/K5N1/8/3Q4/6p1/4N2k

#3

4 + 4


SOLUTION


  • SOUND
  • Sets
    • 1...Bf3
      • 2.Qxf3
        • threat
          • 3.Qxg2#
        • 2...Kg1
          • 3.Qxg2#
        • 2...Kh2
          • 3.Qxg2#
    • 1...Ba4
      • 2.Qh3+
        • 2...Kg1
          • 3.Qxg2#
    • 1...Be4
      • 2.Qxe4
        • threat
          • 3.Qxg2#
        • 2...Kg1
          • 3.Qxg2#
        • 2...Kh2
          • 3.Qxg2#
    • 1...Bb5
      • 2.Qh3+
        • 2...Kg1
          • 3.Qxg2#
    • 1...Bd5
      • 2.Qxd5
        • threat
          • 3.Qxg2#
        • 2...Kg1
          • 3.Qxg2#
        • 2...Kh2
          • 3.Qxg2#
    • 1...g1R
      • 2.Qh7#
      • 2.Qh3#
    • 1...d5
      • 2.Qh3+
        • 2...Kg1
          • 3.Qxg2#
  • Tries
    • 1.Sgf3?
      • threat
        • 2.Qh7#
      • 1...Bxf3
        • 2.Qxf3
          • threat
            • 3.Qxg2#
          • 2...Kg1
            • 3.Qxg2#
          • 2...Kh2
            • 3.Qxg2#
      • 1...g1Q
        • 2.Qh7+
          • 2...Qh2
            • 3.Qxh2#
      • 1...g1S
        • 2.Qh7+
          • 2...Sh3
            • 3.Qxh3#
      • 1...g1B
        • 2.Qh7+
          • 2...Bh2
            • 3.Qxh2#
      • 1...Be4!
  • Keys
    • 1.Se4!
      • threat
        • 2.Qh3+
          • 2...Kg1
            • 3.Qxg2#
      • 1...Kg1
        • 2.Sf3+
          • 2...Kh1
            • 3.Sf2#
            • 3.Sg3#
      • 1...Kh2
        • 2.Qg3+
          • 2...Kg1
            • 3.Qxg2#
          • 2...Kh1
            • 3.Qxg2#
      • 1...Bxe4
        • 2.Qxe4
          • threat
            • 3.Qxg2#
          • 2...Kg1
            • 3.Qxg2#
          • 2...Kh2
            • 3.Qxg2#
      • 1...g1Q
        • 2.Qf3+
          • 2...Kh2
            • 3.Qh5#
          • 2...Qg2
            • 3.Qxg2#
      • 1...g1S
        • 2.Sf2+
          • 2...Kh2
            • 3.Qd6#
      • 1...g1B
        • 2.Qf3+
          • 2...Kh2
            • 3.Qg2#
            • 3.Qh5#
        • 2.Qh3+
          • 2...Bh2
            • 3.Qg2#

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).