Problem Display
PID: 83458 (7b/p7/1p6/P7/p7/1Np5/k7/2KQ4 w - - 0 1)

Havelka, Frantisek

Narodni osvobozeni, 1938

7b/p7/1p6/P7/p7/1Np5/k7/2KQ4

#3

4 + 6


6490 yacpdb 2009

SOLUTION


  • SOUND
  • Sets
    • 1...a3
      • 2.Qc2#
  • Tries
    • 1.Sd4?
      • threat
        • 2.Qxa4#
      • 1...Ka3
        • 2.Sc2+
          • 2...Ka2
            • 3.Qd5#
          • 2...Kb3
            • 3.Qd5#
      • 1...c2
        • 2.Qxc2+
          • 2...Ka1
            • 3.Qb1#
            • 3.Qxa4#
            • 3.Qb2#
          • 2...Ka3
            • 3.Qb2#
      • 1...a3
        • 2.Kc2
          • threat
            • 3.Qb1#
        • 2.Qc2+
          • 2...Ka1
            • 3.Sb3#
            • 3.Qb1#
        • 2.Qb3+
          • 2...Ka1
            • 3.Sc2#
            • 3.Qb1#
            • 3.Qxa3#
      • 1...b5!
    • 1.Sc5?
      • threat
        • 2.Qxa4#
      • 1...c2
        • 2.Qxc2+
          • 2...Ka1
            • 3.Qb1#
            • 3.Qxa4#
          • 2...Ka3
            • 3.Qxa4#
          • 2...Bb2+
            • 3.Qxb2#
      • 1...a3
        • 2.Kc2
          • threat
            • 3.Qb1#
        • 2.Qc2+
          • 2...Ka1
            • 3.Sb3#
            • 3.Qb1#
        • 2.Qb3+
          • 2...Ka1
            • 3.Qb1#
            • 3.Qxa3#
      • 1...b5!
  • Keys
    • 1.Qd5!
      • threat
        • 2.Sd4+
          • 2...Ka1
            • 3.Sc2#
          • 2...Ka3
            • 3.Sc2#
      • 1...Ka3
        • 2.Sa1
          • threat
            • 3.Sc2#
          • 2...Kb4
            • 3.Sc2#
          • 2...c2
            • 3.Sxc2#
      • 1...axb3
        • 2.axb6
          • threat
            • 3.Qa5#
          • 2...Ka1
            • 3.Qa5#
          • 2...Ka3
            • 3.Qa5#
          • 2...axb6
            • 3.Qa8#
          • 2...a5
            • 3.Qxa5#
      • 1...Bd4
        • 2.Sxd4+
          • 2...Ka1
            • 3.Sc2#
          • 2...Ka3
            • 3.Sc2#
      • 1...c2
        • 2.Sd4+
          • 2...Ka1
            • 3.Sxc2#
          • 2...Ka3
            • 3.Sxc2#
      • 1...a3
        • 2.Sd4+
          • 2...Ka1
            • 3.Sc2#

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).