Problem Display
PID: 87157 (8/p7/8/8/k7/7p/2P5/4Q2K w - - 0 1)

Kovalenko, Vitaly Semenovich

Amirov MT, 1994

8/p7/8/8/k7/7p/2P5/4Q2K

#4

3 + 3


6490 yacpdb 2009

SOLUTION


  • SOUND
  • Keys
    • 1.Qb1!
      • 1...Ka5
        • 2.c3
          • 2...Ka6
            • 3.c4
              • threat
                • 4.Qb5#
              • 3...Ka5
                • 4.Qb5#
          • 2...h2
            • 3.Qb7
              • 3...Ka4
                • 4.Qb4#
              • 3...a6
                • 4.Qb4#
      • 1...h2
        • 2.Qb7
          • 2...Ka5
            • 3.c3
              • 3...Ka4
                • 4.Qb4#
              • 3...a6
                • 4.Qb4#
          • 2...a6
            • 3.Qb6
              • 3...Ka3
                • 4.Qb3#
              • 3...a5
                • 4.Qb3#
      • 1...a6
        • 2.Qb3+
          • 2...Ka5
            • 3.c3
              • 3...h2
                • 4.Qb4#
        • 2.Kh2
          • threat
            • 3.Qb6
              • 3...Ka3
                • 4.Qb3#
              • 3...a5
                • 4.Qb3#
          • 2...Ka5
            • 3.c3
              • 3...Ka4
                • 4.Qb4#
        • 2.Qb2
          • 2...Ka5
            • 3.c3
              • threat
                • 4.Qb4#
              • 3...Ka4
                • 4.Qb4#
          • 2...h2
            • 3.Qb6
              • 3...Ka3
                • 4.Qb3#
              • 3...a5
                • 4.Qb3#
        • 2.Qb6
          • threat
            • 3.Kh2
              • 3...Ka3
                • 4.Qb3#
              • 3...a5
                • 4.Qb3#
          • 2...h2
            • 3.Kxh2
              • 3...Ka3
                • 4.Qb3#
              • 3...a5
                • 4.Qb3#
        • 2.Qb7
          • 2...Ka5
            • 3.c3
              • threat
                • 4.Qb4#
              • 3...Ka4
                • 4.Qb4#
          • 2...h2
            • 3.Qb6
              • 3...Ka3
                • 4.Qb3#
              • 3...a5
                • 4.Qb3#
        • 2.Qb8
          • 2...Ka5
            • 3.c3
              • threat
                • 4.Qb4#
              • 3...Ka4
                • 4.Qb4#
          • 2...h2
            • 3.Qb6
              • 3...Ka3
                • 4.Qb3#
              • 3...a5
                • 4.Qb3#

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).