Problem Display
PID: 59193 (6r1/p2RBR2/2n1p1np/2N1k3/8/rP2p1p1/P2PbPPP/7K w - - 0 1)

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

Source?, 1935

6r1/p2RBR2/2n1p1np/2N1k3/8/rP2p1p1/P2PbPPP/7K

#4

11 + 11


1099 WCSC 1988
5396 World Chess Solving Championship 1977-1996 1997

SOLUTION


  • SOUND
  • Keys
    • 1.h3!
      • threat
        • 2.Bf6+
          • 2...Kf4
            • 3.Bd8+
              • 3...Ke5
                • 4.Bc7#
          • 2...Kf5
            • 3.Bd8+
              • 3...Ke5
                • 4.Bc7#
      • 1...gxf2
        • 2.Bf6+
          • 2...Kf4
            • 3.Bd8+
              • 3...Kg3
                • 4.Se4#
              • 3...Ke5
                • 4.Bc7#
          • 2...Kf5
            • 3.Bd8+
              • 3...Ke5
                • 4.Bc7#
      • 1...Rg7
        • 2.Bd6+
          • 2...Kd4
            • 3.Bf8+
              • 3...Ke5
                • 4.Bxg7#
          • 2...Kd5
            • 3.Bf8+
              • 3...Ke5
                • 4.Bxg7#
      • 1...Rc8
        • 2.Bd6+
          • 2...Kd4
            • 3.Bf8+
              • 3...Ke5
                • 4.Bg7#
          • 2...Kd5
            • 3.Bf8+
              • 3...Ke5
                • 4.Bg7#
      • 1...Bg4
        • 2.Sd3+
          • 2...Ke4
            • 3.f3+
              • 3...Bxf3
                • 4.gxf3#
      • 1...Sd4
        • 2.f4+
          • 2...Sxf4
            • 3.dxe3
              • threat
                • 4.exd4#
                • 4.exf4#
              • 3...Sf5
                • 4.Bf6#
              • 3...Sd5
                • 4.Bd6#
      • 1...Sf4
        • 2.d4+
          • 2...Sxd4
            • 3.fxe3
              • threat
                • 4.exd4#
                • 4.exf4#
              • 3...Sf5
                • 4.Bf6#
              • 3...Sd5
                • 4.Bd6#

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).