Problem Display
PID: 133986 (6nq/nNpB1p1r/3P4/1P1kp1R1/Np1p4/1rpP4/1PP2P2/4Q1Kb w - - 0 1)

Lyubashevsky, Leonid Abramovic

Makaronets, Leonid

Mat Plus, 2008

6nq/nNpB1p1r/3P4/1P1kp1R1/Np1p4/1rpP4/1PP2P2/4Q1Kb

#4

12 + 13


SOLUTION


  • SOUND
  • Keys
    • 1.Rg4!
      • threat
        • 2.Qe4+
          • 2...Bxe4
            • 3.dxe4+
              • 3...Kc4
                • 4.Sa5#
      • 1...e4
        • 2.dxe4+
          • 2...Ke5
            • 3.f4+
              • 3...Kf6
                • 4.e5#
          • 2...Bxe4
            • 3.Qxe4+
              • 3...Kc4
                • 4.Sa5#
      • 1...Bg2
        • 2.Qe4+
          • 2...Bxe4
            • 3.dxe4+
              • 3...Kc4
                • 4.Sa5#
      • 1...Bf3
        • 2.Qe4+
          • 2...Bxe4
            • 3.dxe4+
              • 3...Kc4
                • 4.Sa5#
      • 1...Sc6
        • 2.dxc7
          • threat
            • 3.Sb6#
          • 2...e4
            • 3.f4
              • threat
                • 4.Sb6#
      • 1...Sf6
        • 2.Qxe5+
          • 2...Kxe5
            • 3.f4+
              • 3...Kd5
                • 4.Rg5#
      • 1...f5
        • 2.Rxd4+
          • 2...Kxd4
            • 3.Qe3+
              • 3...Kd5
                • 4.Qc5#

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).