Problem Display
PID: 94219 (8/2p1pB2/Q2pN1N1/3k1p2/5p2/K1p5/2pp4/2nb4 w - - 0 1)

Vasta, Jan

Sachove umeni (Ceskoslovensky sach), 1931

8/2p1pB2/Q2pN1N1/3k1p2/5p2/K1p5/2pp4/2nb4

#3

5 + 11


6490 yacpdb 2009

SOLUTION


  • SOUND
  • Sets
    • 1...c5
      • 2.Qa4
        • threat
          • 3.Sexf4#
          • 3.Sc7#
        • 2...c4
          • 3.Qa8#
  • Tries
    • 1.Qb5+?
      • 1...c5
        • 2.Qa4
          • threat
            • 3.Sexf4#
            • 3.Sc7#
          • 2...c4
            • 3.Qa8#
      • 1...Ke4!
    • 1.Qb7+?
      • 1...Kc4
        • 2.Sgxf4
          • threat
            • 3.Qd5#
            • 3.Qa6#
            • 3.Qc6#
            • 3.Qb4#
      • 1...c6!
  • Keys
    • 1.Qa7!
      • threat
        • 2.Sexf4+
          • 2...Ke4
            • 3.Bd5#
          • 2...Kc6
            • 3.Be8#
      • 1...Kc4
        • 2.Sgxf4
          • threat
            • 3.Qa4#
            • 3.Qa6#
          • 2...Kb5
            • 3.Sd4#
      • 1...Ke4
        • 2.Sg5+
          • 2...Kd3
            • 3.Sxf4#
      • 1...Kc6
        • 2.Sxe7+
          • 2...Kb5
            • 3.Sd4#
            • 3.Sxc7#
          • 2...Kd7
            • 3.Qxc7#
      • 1...f3
        • 2.Sef4+
          • 2...Ke4
            • 3.Bd5#
          • 2...Kc6
            • 3.Be8#
        • 2.Sgf4+
          • 2...Kc4
            • 3.Qa4#
            • 3.Qa6#
          • 2...Ke4
            • 3.Qd4#
          • 2...Ke5
            • 3.Qd4#
          • 2...Kc6
            • 3.Be8#
        • 2.Sxe7+
          • 2...Kc4
            • 3.Qa6#
          • 2...Ke4
            • 3.Qd4#
          • 2...Ke5
            • 3.Qd4#
      • 1...c5
        • 2.Qa4
          • threat
            • 3.Sexf4#
            • 3.Sc7#
          • 2...c4
            • 3.Qa8#

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).