Problem Display
PID: 49471 (kBB5/3Np3/6K1/5p2/4n3/1p5p/2n5/7Q w - - 0 1)

Speckmann, Werner

Schach-Express, 1949

kBB5/3Np3/6K1/5p2/4n3/1p5p/2n5/7Q

#3

5 + 7


SOLUTION


  • SOUND
  • Sets
    • 1...Sa1
      • 2.Qxa1#
    • 1...Se3
      • 2.Qa1#
    • 1...Sd4
      • 2.Qa1#
    • 1...f4
      • 2.Qxe4#
  • Tries
    • 1.Qa1+?
      • 1...Sa3
        • 2.Qxa3#
      • 1...Sxa1!
    • 1.Qg1?
      • threat
        • 2.Qa7#
      • 1...Sc5
        • 2.Qxc5
          • threat
            • 3.Qa7#
            • 3.Qa5#
            • 3.Qd5#
            • 3.Qc6#
      • 1...Sf2!
  • Keys
    • 1.Qh2!
      • threat
        • 2.Sb6#
      • 1...Sg3
        • 2.Qg1
          • threat
            • 3.Qa7#
          • 2...Se3
            • 3.Qa1#
          • 2...Sd4
            • 3.Qa1#
      • 1...Sd6
        • 2.Qg1
          • threat
            • 3.Qa7#
          • 2...Sxc8
            • 3.Qh1#
          • 2...Se3
            • 3.Qa1#
          • 2...Sd4
            • 3.Qa1#
          • 2...Sb5
            • 3.Qh1#
      • 1...f4
        • 2.Qxf4
          • threat
            • 3.Sb6#
            • 3.Qxe4#
          • 2...Sd6
            • 3.Qa4#
      • 1...e5
        • 2.Qxe5
          • threat
            • 3.Sb6#
            • 3.Qa5#
            • 3.Qd5#

FEATURES


NOT CLASSIFIED


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).