Problem Display
PID: 20310 (1N6/QR6/PP6/1N6/2P1BR2/2BK2PP/3PPP2/3k4 w - - 0 1)

Quike, Julian

1st Prize, Le Figaro, 1956

1N6/QR6/PP6/1N6/2P1BR2/2BK2PP/3PPP2/3k4

#4

16 + 1


3976 FIDE Album (1956-1958) 1961
788 US Problem Bulletin 1963
274 diagrammes 1974
145 StrateGems 1999
133 The Problemist Supplement 2008

SOLUTION


  • SOUND
  • Keys
    • 1.Rh7!
      • threat
        • 2.Bh8
          • threat
            • 3.Qg7
              • threat
                • 4.Qa1#
              • 3...Kc1
                • 4.Qa1#
              • 3...Ke1
                • 4.Qa1#
          • 2...Kc1
            • 3.Qg7
              • threat
                • 4.Qa1#
              • 3...Kb1
                • 4.Qa1#
                • 4.Qb2#
              • 3...Kd1
                • 4.Qa1#
          • 2...Ke1
            • 3.Qg7
              • threat
                • 4.Qa1#
              • 3...Kd1
                • 4.Qa1#
              • 3...Kf1
                • 4.Qa1#
        • 2.Qe7
          • threat
            • 3.Qa3
              • 3...Ke1
                • 4.Qc1#
                • 4.Qa1#
          • 2...Kc1
            • 3.Qa3+
              • 3...Kb1
                • 4.Ke3#
                • 4.Kd4#
                • 4.Qb2#
                • 4.Qa1#
              • 3...Kd1
                • 4.Qa1#
            • 3.Qb4
              • 3...Kd1
                • 4.Qb1#
          • 2...Ke1
            • 3.Qa3
              • threat
                • 4.Qc1#
                • 4.Qa1#
              • 3...Kd1
                • 4.Qa1#
              • 3...Kf1
                • 4.Qc1#
                • 4.Qa1#
            • 3.Qb4
              • threat
                • 4.Qb1#
              • 3...Kd1
                • 4.Qb1#
              • 3...Kf1
                • 4.Qb1#
      • 1...Kc1
        • 2.Bh8
          • threat
            • 3.Qg7
              • threat
                • 4.Qa1#
              • 3...Kb1
                • 4.Qa1#
                • 4.Qb2#
              • 3...Kd1
                • 4.Qa1#
          • 2...Kb1
            • 3.Qg7
              • threat
                • 4.Qa1#
                • 4.Qb2#
              • 3...Kc1
                • 4.Qa1#
              • 3...Ka2
                • 4.Qb2#
          • 2...Kd1
            • 3.Qg7
              • threat
                • 4.Qa1#
              • 3...Kc1
                • 4.Qa1#
              • 3...Ke1
                • 4.Qa1#
      • 1...Ke1
        • 2.Ba8
          • threat
            • 3.Qb7
              • threat
                • 4.Qh1#
              • 3...Kd1
                • 4.Qh1#
              • 3...Kf1
                • 4.Qh1#
          • 2...Kd1
            • 3.Qb7
              • threat
                • 4.Qh1#
              • 3...Kc1
                • 4.Qh1#
              • 3...Ke1
                • 4.Qh1#
          • 2...Kf1
            • 3.Qb7
              • threat
                • 4.Qh1#
              • 3...Ke1
                • 4.Qh1#
              • 3...Kg1
                • 4.Qh1#
                • 4.Qg2#

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).