Problem Display
PID: 273715 (8/5R1N/PPk5/2p1p2N/2P5/2B1K3/1P6/1r6 w - - 0 1)

Goumondy, Claude

3rd Prize, Grunenwald/Monreal JT (diagrammes), 1978

8/5R1N/PPk5/2p1p2N/2P5/2B1K3/1P6/1r6

#4

9 + 4


SOLUTION


  • SOUND
  • Keys
    • 1.b7!
      • threat
        • 2.b8S+
          • 2...Kd6
            • 3.Rd7+
              • 3...Ke6
                • 4.Sg7#
        • 2.b8Q
          • threat
            • 3.Qc7#
          • 2...Re1+
            • 3.Bxe1
              • 3...e4
                • 4.Qc7#
      • 1...Re1+
        • 2.Bxe1
          • threat
            • 3.b8Q
              • 3...e4
                • 4.Qc7#
          • 2...Kb6
            • 3.b8Q+
              • 3...Kxa6
                • 4.Rf6#
                • 4.Ra7#
                • 4.Qd6#
                • 4.Qa7#
                • 4.Qb5#
                • 4.Qb7#
              • 3...Kc6
                • 4.Qc7#
            • 3.b8S
              • 3...e4
                • 4.Rb7#
          • 2...Kd6
            • 3.b8Q+
              • 3...Kc6
                • 4.Qc7#
              • 3...Ke6
                • 4.Sg5#
          • 2...e4
            • 3.b8B
              • 3...Kb6
                • 4.Rf6#
      • 1...Rxb2
        • 2.Bxb2
          • threat
            • 3.b8Q
              • 3...e4
                • 4.Qc7#
          • 2...Kb6
            • 3.b8Q+
              • 3...Ka5
                • 4.Qb5#
              • 3...Kxa6
                • 4.Ra7#
                • 4.Qa7#
                • 4.Qb5#
              • 3...Kc6
                • 4.Qc7#
          • 2...Kd6
            • 3.b8Q+
              • 3...Kc6
                • 4.Qc7#
              • 3...Ke6
                • 4.Sg5#
          • 2...e4
            • 3.b8R
              • 3...Kd6
                • 4.Rb6#
      • 1...Rg1
        • 2.b8Q
          • threat
            • 3.Qc7#
          • 2...Re1+
            • 3.Bxe1
              • 3...e4
                • 4.Qc7#
          • 2...Rg3+
            • 3.Sxg3
              • 3...e4
                • 4.Qc7#

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).