Problem Display
PID: 51784 (n7/p4p2/N1pb1B2/3kP3/2N2p2/1RPP3B/K2p2R1/n2rq3 w - - 0 1)

Lyubashevsky, Leonid Abramovic

Makaronets, Leonid

2nd Prize, StrateGems, 2004

n7/p4p2/N1pb1B2/3kP3/2N2p2/1RPP3B/K2p2R1/n2rq3

#4

10 + 11


145 StrateGems 2006

SOLUTION


  • SOUND
  • Keys
    • 1.Rg5!
      • threat
        • 2.exd6+
          • 2...Qe5
            • 3.Rxe5#
      • 1...Qxe5
        • 2.Se3+
          • 2...fxe3
            • 3.c4+
              • 3...Kd4
                • 4.Rg4#
      • 1...Bxe5
        • 2.Rb5+
          • 2...cxb5
            • 3.Sb4+
              • 3...Kc5
                • 4.Be7#
      • 1...c5
        • 2.exd6+
          • 2...Qe5
            • 3.Rxe5+
              • 3...Kc6
                • 4.Sb8#
                • 4.Rxc5#
      • 1...Qg3
        • 2.e6+
          • 2...Qxg5
            • 3.Se3+
              • 3...fxe3
                • 4.c4#
      • 1...Qh4
        • 2.e6+
          • 2...Qxg5
            • 3.Se3+
              • 3...fxe3
                • 4.c4#
      • 1...Qg1
        • 2.e6+
          • 2...Qxg5
            • 3.Se3+
              • 3...fxe3
                • 4.c4#
      • 1...Qe4
        • 2.exd6+
          • 2...Qf5
            • 3.Rxf5+
              • 3...Ke6
                • 4.Sc5#
      • 1...Bc7
        • 2.Sxc7+
          • 2...Sxc7
            • 3.e6+
              • 3...Qe5
                • 4.Rxe5#
      • 1...Bb8
        • 2.Rxb8
          • threat
            • 3.Rd8#
          • 2...c5
            • 3.Sa5
              • threat
                • 4.Rd8#
              • 3...Sb6
                • 4.Sc7#
          • 2...Sb6
            • 3.Sxb6+
              • 3...axb6
                • 4.Rd8#
            • 3.Sc7+
              • 3...Kc5
                • 4.Be7#
            • 3.Rd8+
              • 3...Sd7
                • 4.Rxd7#
            • 3.e6+
              • 3...Qe5
                • 4.Rxe5#

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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).