Problem Display
PID: 43897 (2K3Bk/8/2pP3N/1p5P/1r3p1p/5p2/3r4/3b3Q w - - 0 1)

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

1st Comm., BCPS 008. Ty., 1928-1929

2K3Bk/8/2pP3N/1p5P/1r3p1p/5p2/3r4/3b3Q

#4

6 + 9


56 The Problemist 1929

SOLUTION


  • SOUND
  • Keys
    • 1.Qe1!
      • threat
        • 2.Qe5#
      • 1...Kg7
        • 2.Qe7+
          • 2...Kxh6
            • 3.Qh7+
              • 3...Kg5
                • 4.Qg6#
      • 1...Re2
        • 2.Qc3+
          • 2...Rd4
            • 3.Qxd4+
              • 3...Re5
                • 4.Qxe5#
      • 1...Rg2
        • 2.Qe5+
          • 2...Rg7
            • 3.Sf5
              • threat
                • 4.Qxg7#
              • 3...Kxg8
                • 4.Qxg7#
      • 1...Re4
        • 2.Qxe4
          • threat
            • 3.Qh7#
            • 3.Qe5#
          • 2...Kg7
            • 3.Qg6+
              • 3...Kf8
                • 4.Qf7#
              • 3...Kh8
                • 4.Sf7#
                • 4.Qh7#
                • 4.Qf6#
            • 3.Qh7+
              • 3...Kf6
                • 4.Qe7#
              • 3...Kf8
                • 4.Qe7#
                • 4.Qf7#
      • 1...Be2
        • 2.Qa1+
          • 2...Rdb2
            • 3.Qg1
              • threat
                • 4.Sf7#
              • 3...Bc4
                • 4.Qd4#
          • 2...Rdd4
            • 3.Qg1
              • threat
                • 4.Sf7#
              • 3...Bc4
                • 4.Qxd4#
          • 2...Rbb2
            • 3.Qa7
              • threat
                • 4.Qh7#
              • 3...Bd3
                • 4.Qd4#
          • 2...Rbd4
            • 3.Qa7
              • threat
                • 4.Qh7#
              • 3...Bd3
                • 4.Qxd4#

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).