Problem Display
PID: 256839 (2k5/1R3p1p/Bp5P/3p2PK/3ppB2/8/p7/8 w - - 0 1)

Fomichev, Evgeny Vasilevich

Kostylev, Mikhail Romanovich

3/4 Prize, Havel-140 MT (Kudesnik), 2020-2021

2k5/1R3p1p/Bp5P/3p2PK/3ppB2/8/p7/8

#4

6 + 8


SOLUTION


  • SOUND
  • Keys
    • 1.Kg4!
      • threat
        • 2.Rb8+
          • 2...Kd7
            • 3.Bb5+
              • 3...Ke6
                • 4.Re8#
              • 3...Ke7
                • 4.Re8#
      • 1...f5+
        • 2.Kxf5
          • threat
            • 3.Ke6
              • threat
                • 4.Rd7#
                • 4.Rb8#
              • 3...Kd8
                • 4.Rb8#
          • 2...Kd8
            • 3.Ke6
              • threat
                • 4.Rb8#
              • 3...Kc8
                • 4.Rd7#
                • 4.Rb8#
              • 3...Ke8
                • 4.Rb8#
          • 2...a1Q
            • 3.Ke6
              • threat
                • 4.Rb8#
              • 3...Kd8
                • 4.Rb8#
          • 2...a1R
            • 3.Ke6
              • threat
                • 4.Rb8#
              • 3...Kd8
                • 4.Rb8#
      • 1...Kd8
        • 2.Bb5
          • threat
            • 3.Rb8+
              • 3...Ke7
                • 4.Re8#
          • 2...f5+
            • 3.gxf5 ep
              • threat
                • 4.Rb8#
              • 3...Kc8
                • 4.Rb8#
          • 2...f6
            • 3.gxf6
              • threat
                • 4.Rb8#
              • 3...Kc8
                • 4.Rb8#
      • 1...b5
        • 2.Rb8+
          • 2...Kd7
            • 3.Bxb5+
              • 3...Ke6
                • 4.Re8#
              • 3...Ke7
                • 4.Re8#
      • 1...f6
        • 2.Re7+
          • 2...Kd8
            • 3.gxf6
              • threat
                • 4.Bc7#

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).