Problem Display
PID: 125459 (8/3p3Q/5K2/6P1/2PkB1p1/1PN5/1Ppp4/3rb3 w - - 0 1)

Breuer, Josef Johann

1st Prize, Deutsche Schachzeitung, 1964

8/3p3Q/5K2/6P1/2PkB1p1/1PN5/1Ppp4/3rb3

#4

8 + 7


6490 yacpdb 2009

SOLUTION


  • SOUND
  • Keys
    • 1.Bd5!
      • threat
        • 2.Qe4+
          • 2...Kc5
            • 3.Qe3+
              • 3...Kb4
                • 4.Qb6#
              • 3...Kd6
                • 4.Sb5#
                • 4.Qb6#
        • 2.Qe7
          • threat
            • 3.Se2+
              • 3...Kd3
                • 4.Qe4#
            • 3.Sb5+
              • 3...Kd3
                • 4.Qe4#
            • 3.Sa4
              • threat
                • 4.Qe4#
              • 3...Kd3
                • 4.Qe4#
            • 3.b4
              • threat
                • 4.Qe4#
              • 3...Kd3
                • 4.Qe4#
      • 1...Ke3
        • 2.Qe4+
          • 2...Kf2
            • 3.Qf4+
              • 3...Kg1
                • 4.Se2#
      • 1...Kc5
        • 2.Qe7+
          • 2...Kd4
            • 3.Se2+
              • 3...Kd3
                • 4.Qe4#
            • 3.Sb5+
              • 3...Kd3
                • 4.Qe4#
            • 3.Sa4
              • threat
                • 4.Qe4#
              • 3...Kd3
                • 4.Qe4#
            • 3.b4
              • threat
                • 4.Qe4#
              • 3...Kd3
                • 4.Qe4#
          • 2...Kb6
            • 3.Qd6+
              • 3...Ka5
                • 4.b4#
              • 3...Ka7
                • 4.Sb5#
          • 2...d6
            • 3.Qe3+
              • 3...Kb4
                • 4.Qb6#
            • 3.Qa7+
              • 3...Kb4
                • 4.Qb6#
                • 4.Qa3#
      • 1...Bf2
        • 2.b4
          • threat
            • 3.Qe4#
          • 2...Re1
            • 3.Sb5+
              • 3...Ke3
                • 4.Qe4#

FEATURES


NOT CLASSIFIED


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).