Problem Display
PID: 192814 (8/8/QNkB4/1p3K2/5p2/2p5/3n4/nr6 w - - 0 1)

Fomichev, Evgeny Vasilevich

Krikheli, Iosif Mikhailovich

3rd HM., Metlitsky-60 JT, 2003

8/8/QNkB4/1p3K2/5p2/2p5/3n4/nr6

#4

4 + 7


SOLUTION


  • SOUND
  • Keys
    • 1.Be7!
      • threat
        • 2.Qc8+
          • 2...Kxb6
            • 3.Bc5+
              • 3...Ka5
                • 4.Qa8#
      • 1...Sab3
        • 2.Sa8+
          • 2...Kd5
            • 3.Qd6+
              • 3...Kc4
                • 4.Sb6#
          • 2...Kd7
            • 3.Qe6+
              • 3...Ke8
                • 4.Sc7#
      • 1...Sdb3
        • 2.Sd5+
          • 2...Kxd5
            • 3.Qe6+
              • 3...Kd4
                • 4.Qe4#
          • 2...Kd7
            • 3.Qe6+
              • 3...Ke8
                • 4.Sf6#
                • 4.Sc7#
        • 2.Sa8+
          • 2...Kd5
            • 3.Qd6+
              • 3...Kc4
                • 4.Sb6#
            • 3.Qe6+
              • 3...Kd4
                • 4.Qe4#
          • 2...Kd7
            • 3.Qe6+
              • 3...Ke8
                • 4.Sc7#
      • 1...Se4
        • 2.Sd5+
          • 2...Kxd5
            • 3.Qe6+
              • 3...Kd4
                • 4.Qxe4#
          • 2...Kd7
            • 3.Qe6+
              • 3...Ke8
                • 4.Sc7#
        • 2.Sa8+
          • 2...Kd5
            • 3.Qe6+
              • 3...Kd4
                • 4.Qxe4#
          • 2...Kd7
            • 3.Qe6+
              • 3...Ke8
                • 4.Sc7#
      • 1...b4
        • 2.Sc4+
          • 2...Kd5
            • 3.Se5
              • threat
                • 4.Qd3#
                • 4.Qd6#
              • 3...Kd4
                • 4.Qd3#
              • 3...Sc4
                • 4.Qxc4#
          • 2...Kc7
            • 3.Sd6
              • threat
                • 4.Qb7#
              • 3...Kd7
                • 4.Qb7#
              • 3...Kb8
                • 4.Qb7#
          • 2...Kd7
            • 3.Qb7+
              • 3...Ke8
                • 4.Sd6#

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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).