Problem Display
PID: 255174 (6nr/4b2N/3p1ppp/p2PN3/2Bk4/4R3/4P1P1/K5B1 w - - 0 1)

Lyubashevsky, Leonid Abramovic

Makaronets, Leonid

1st HM., Zadachi i Etyudi, 2006

6nr/4b2N/3p1ppp/p2PN3/2Bk4/4R3/4P1P1/K5B1

#4

9 + 9


SOLUTION


  • SOUND
  • Keys
    • 1.Ba2!
      • threat
        • 2.Sc6+
          • 2...Kc5
            • 3.Ra3+
              • 3...Kb5
                • 4.Rxa5#
      • 1...Kc5
        • 2.Sd7+
          • 2...Kb4
            • 3.Rb3+
              • 3...Ka4
                • 4.Sb6#
              • 3...Kc4
                • 4.Sb6#
          • 2...Kd4
            • 3.Kb2
              • threat
                • 4.Re5#
                • 4.Re6#
                • 4.Rxe7#
          • 2...Kb5
            • 3.Rb3+
              • 3...Ka4
                • 4.Sb6#
              • 3...Kc4
                • 4.Sb6#
              • 3...Ka6
                • 4.Sb8#
      • 1...dxe5
        • 2.Rh3+
          • 2...Ke4
            • 3.Rh4+
              • 3...Kf5
                • 4.e4#
      • 1...fxe5
        • 2.Ra3+
          • 2...Ke4
            • 3.Ra4+
              • 3...Kf5
                • 4.g4#
      • 1...Bd8
        • 2.Sd7
          • threat
            • 3.Kb2
              • threat
                • 4.Re5#
                • 4.Re6#
                • 4.Re7#
                • 4.Re8#
            • 3.Shf8
              • threat
                • 4.Se6#
          • 2...Be7
            • 3.Kb2
              • threat
                • 4.Re5#
                • 4.Re6#
                • 4.Rxe7#
          • 2...Se7
            • 3.Rf3+
              • 3...Ke4
                • 4.Shxf6#
            • 3.Shxf6
              • threat
                • 4.Ra3#
                • 4.Rd3#
                • 4.Rf3#
                • 4.Rg3#
                • 4.Rh3#
      • 1...a4
        • 2.Sc6+
          • 2...Kc5
            • 3.Rc3+
              • 3...Kb5
                • 4.Bc4#
            • 3.Re4+
              • 3...Kb5
                • 4.Bc4#

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).