Problem Display
PID: 257522 (4B3/K7/p4N2/p1kP2P1/1pb2QP1/1rp2P2/2pr2P1/2N3b1 w - - 0 1)

Lyubashevsky, Leonid Abramovic

Makaronets, Leonid

Volchek, Viktor Fedorovich

Phenix, 2021

4B3/K7/p4N2/p1kP2P1/1pb2QP1/1rp2P2/2pr2P1/2N3b1

#4

10 + 10


3713 Snap 2022

SOLUTION


  • SOUND
  • Keys
    • 1.g3!
      • threat
        • 2.Qc7+
          • 2...Kd4
            • 3.Qb6+
              • 3...Ke5
                • 4.f4#
      • 1...Rxd5
        • 2.Se4+
          • 2...Kd4
            • 3.Sd6+
              • 3...Kc5
                • 4.Sb7#
      • 1...Bxd5
        • 2.Sd7+
          • 2...Kb5+
            • 3.Sb6+
              • 3...Kc5
                • 4.Sa4#
              • 3...Bc6
                • 4.Qc4#
          • 2...Kc6+
            • 3.Sb6+
              • 3...Kc5
                • 4.Sa4#
      • 1...Rf2
        • 2.Qe3+
          • 2...Kd6
            • 3.Qe6+
              • 3...Kc5
                • 4.Qb6#
              • 3...Kc7
                • 4.Qd7#
      • 1...Be3
        • 2.Qxe3+
          • 2...Kd6
            • 3.Qe6+
              • 3...Kc5
                • 4.Qb6#
              • 3...Kc7
                • 4.Qd7#

Anticipated by 255585(2021)

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).