Problem Display
PID: 32039 (8/1K4b1/1pN5/8/1p1pp3/3P4/2Q5/k3N2b w - - 0 1)

Stoyanov, Kiril N

Shakhmaty v SSSR, 1957

8/1K4b1/1pN5/8/1p1pp3/3P4/2Q5/k3N2b

#3

5 + 7


SOLUTION


  • SOUND
  • Sets
    • 1...b3
      • 2.Qc1+
        • 2...Ka2
          • 3.Sb4#
  • Tries
    • 1.Ka7?
      • threat
        • 2.Sxb4
          • threat
            • 3.Qc1#
            • 3.Qa2#
      • 1...exd3
        • 2.Sxd3
          • threat
            • 3.Qb2#
      • 1...Bh6
        • 2.Sxb4
          • threat
            • 3.Qa2#
        • 2.Sxd4
          • threat
            • 3.Sb3#
          • 2...b3
            • 3.Sxb3#
      • 1...Bf8
        • 2.Sxd4
          • threat
            • 3.Sb3#
          • 2...b3
            • 3.Sxb3#
      • 1...b3
        • 2.Qc1+
          • 2...Ka2
            • 3.Sb4#
      • 1...Be5!
    • 1.Sxb4?
      • threat
        • 2.Qc1#
        • 2.Qa2#
      • 1...e3+
        • 2.Kxb6
          • threat
            • 3.Qc1#
            • 3.Qa2#
        • 2.Ka7
          • threat
            • 3.Qc1#
            • 3.Qa2#
      • 1...exd3+!
    • 1.Qa4+?
      • 1...Kb1
        • 2.Qb3+
          • 2...Ka1
            • 3.Sc2#
          • 2...Kc1
            • 3.Qc2#
      • 1...Kb2!
  • Keys
    • 1.Ka6!
      • threat
        • 2.Sxb4
          • threat
            • 3.Qc1#
            • 3.Qa2#
      • 1...exd3
        • 2.Sxd3
          • threat
            • 3.Qb2#
      • 1...Bh6
        • 2.Sxb4
          • threat
            • 3.Qa2#
        • 2.Sxd4
          • threat
            • 3.Sb3#
          • 2...b3
            • 3.Sxb3#
      • 1...Bf8
        • 2.Sxd4
          • threat
            • 3.Sb3#
          • 2...b3
            • 3.Sxb3#
      • 1...b3
        • 2.Qc1+
          • 2...Ka2
            • 3.Sb4#
      • 1...e3
        • 2.Qb3
          • threat
            • 3.Sc2#

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).