Problem Display
PID: 259523 (4B3/2b4b/2RpR1pN/6p1/p2k4/6pP/1PP2pP1/K4N2 w - - 0 1)

Lyubashevsky, Leonid Abramovic

Makaronets, Leonid

Volchek, Viktor Fedorovich

Variantim, 2022

4B3/2b4b/2RpR1pN/6p1/p2k4/6pP/1PP2pP1/K4N2

#4

10 + 9


SOLUTION


  • SOUND
  • Keys
    • 1.Sg4!
      • threat
        • 2.Re4+
          • 2...Kxe4
            • 3.Rc4+
              • 3...Kd5
                • 4.Bf7#
              • 3...Kf5
                • 4.Bd7#
      • 1...Kd5
        • 2.Re4
          • threat
            • 3.Sf6#
          • 2...Kxe4
            • 3.Rc4+
              • 3...Kd5
                • 4.Bf7#
              • 3...Kf5
                • 4.Bd7#
          • 2...Bd8
            • 3.Sfe3+
              • 3...Kxe4
                • 4.Rc4#
            • 3.Rcc4
              • threat
                • 4.Sfe3#
                • 4.Sge3#
                • 4.Bc6#
                • 4.Bf7#
      • 1...Bb6
        • 2.Rexd6+
          • 2...Ke4
            • 3.Sd2+
              • 3...Kf4
                • 4.Rf6#
              • 3...Kf5
                • 4.Rf6#
      • 1...Bd8
        • 2.Re4+
          • 2...Kxe4
            • 3.Rc4+
              • 3...Kd5
                • 4.Bf7#
              • 3...Kf5
                • 4.Bd7#
          • 2...Kd5
            • 3.Sfe3+
              • 3...Kxe4
                • 4.Rc4#
            • 3.Rcc4
              • threat
                • 4.Sfe3#
                • 4.Sge3#
                • 4.Bc6#
                • 4.Bf7#
        • 2.Rexd6+
          • 2...Ke4
            • 3.Rc4+
              • 3...Kf5
                • 4.Sfe3#
                • 4.Sxg3#
                • 4.Bd7#
      • 1...Bg8
        • 2.c3+
          • 2...Kd5
            • 3.Re5+
              • 3...dxe5
                • 4.Sf6#
      • 1...d5
        • 2.Re3
          • threat
            • 3.c3#
          • 2...Ba5
            • 3.c3+
              • 3...Bxc3
                • 4.bxc3#

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).