Problem Display
PID: 32810 (n7/K1PB4/b1P1P3/1p2k2p/3R2P1/1p3p1P/pQP1Pp2/5rbn w - - 0 1)

Kubbel, Leonid Ivanovich (AKA Kubbel, Karl Artur Leonid)

1st Prize, 64 Shakhmatnoe obozrenie, 1935-1936

n7/K1PB4/b1P1P3/1p2k2p/3R2P1/1p3p1P/pQP1Pp2/5rbn

#4

11 + 12


3188 Dutch Solving Championship 2002
  • SOUND
  • Keys
    • 1.Qc3!
      • threat
        • 2.Qe3+
          • 2...Kf6
            • 3.Qh6+
              • 3...Ke5
                • 4.Qf4#
                • 4.Qg7#
                • 4.Qh8#
              • 3...Ke7
                • 4.Qg7#
        • 2.Qd2
          • threat
            • 3.Qf4#
          • 2...Kf6
            • 3.Qh6+
              • 3...Ke5
                • 4.Qf4#
                • 4.Qg7#
                • 4.Qh8#
              • 3...Ke7
                • 4.Qg7#
          • 2...Bh2
            • 3.Rd5+
              • 3...Ke4
                • 4.Qd4#
              • 3...Kf6
                • 4.Qg5#
      • 1...Kf6
        • 2.Rd5+
          • 2...Kg6
            • 3.Qh8
              • threat
                • 4.Be8#
                • 4.gxh5#
      • 1...Sxc7
        • 2.Ra4+
          • 2...Kd6
            • 3.Qb4+
              • 3...Kd5
                • 4.Qd4#
              • 3...Ke5
                • 4.Qd4#
      • 1...hxg4
        • 2.Qc5+
          • 2...Kf6
            • 3.Rxg4
              • threat
                • 4.Qg5#
      • 1...Bh2
        • 2.Qe3+
          • 2...Kf6
            • 3.Qh6+
              • 3...Ke5
                • 4.Qg7#
                • 4.Qh8#
              • 3...Ke7
                • 4.Qg7#
      • 1...Sg3
        • 2.Rd1+
          • 2...Kf4
            • 3.Qd2+
              • 3...Ke4
                • 4.Qd4#
              • 3...Ke5
                • 4.Qd4#


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).