Problem Display
PID: 262958 (2Nn4/Nn2R3/2p1PBPp/r2k3K/PPppp3/1p2p3/1R1P4/2Q5 w - - 0 1)

Grinblat, Arieh

Zadachi i Etyudi, 2008

2Nn4/Nn2R3/2p1PBPp/r2k3K/PPppp3/1p2p3/1R1P4/2Q5

#4

12 + 11


SOLUTION


  • SOUND
  • Keys
    • 1.Qh1!
      • threat
        • 2.Qh2
          • threat
            • 3.Sb6#
            • 3.Qe5#
      • 1...exd2
        • 2.Rxd2
          • threat
            • 3.Rxd4#
          • 2...Sxe6
            • 3.Rxd4+
              • 3...Sxd4
                • 4.Re5#
                • 4.Qxe4#
            • 3.Rd7+
              • 3...Sd6
                • 4.Sb6#
                • 4.Se7#
                • 4.Rxd6#
          • 2...d3
            • 3.Qh2
              • threat
                • 4.Sb6#
                • 4.Qe5#
          • 2...c5
            • 3.Sb6+
              • 3...Kd6
                • 4.Qh2#
      • 1...c3
        • 2.d3
          • threat
            • 3.Qxe4#
          • 2...Sc5
            • 3.Sb6+
              • 3...Kd6
                • 4.Sac8#
                • 4.Qh2#
      • 1...Rb5
        • 2.axb5
          • threat
            • 3.Sb6+
              • 3...Kd6
                • 4.Sac8#
                • 4.Qh2#
            • 3.Qh2
              • threat
                • 4.Sb6#
                • 4.Qe5#
          • 2...Sxe6
            • 3.Sb6+
              • 3...Kd6
                • 4.Sac8#
                • 4.Rd7#
            • 3.Rd7+
              • 3...Sd6
                • 4.Sb6#
                • 4.Se7#
                • 4.Rxd6#
          • 2...Sf7
            • 3.Sb6+
              • 3...Kd6
                • 4.Sac8#
            • 3.Qh2
              • threat
                • 4.Sb6#
              • 3...Se5
                • 4.Qxe5#
      • 1...Ra6
        • 2.Rd7+
          • 2...Kxe6
            • 3.Re7+
              • 3...Kd5
                • 4.Re5#
                • 4.Qxe4#
              • 3...Kf5
                • 4.Qf1#
              • 3...Kxf6
                • 4.Qf1#
      • 1...Sf7
        • 2.exf7
          • threat
            • 3.Re5#
            • 3.Qxe4#
          • 2...c3
            • 3.d3
              • threat
                • 4.Re5#
                • 4.Qxe4#

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).