Problem Display
PID: 197995 (4Bn1r/np6/3b4/2P1Ppp1/1p6/pK4p1/4k3/1Q3R2 w - - 0 1)

Ernst, Georg

Hamburger Schachkongress, 1921

4Bn1r/np6/3b4/2P1Ppp1/1p6/pK4p1/4k3/1Q3R2

#4

6 + 11


6490 yacpdb 2019

SOLUTION


  • SOUND
  • Keys
    • 1.Qxf5!
      • threat
        • 2.Qf3+
          • 2...Kd2
            • 3.Rd1#
      • 1...Kd2
        • 2.Qf3
          • threat
            • 3.Rd1#
          • 2...Rh1
            • 3.Rxh1
              • threat
                • 4.Rd1#
      • 1...Ke3
        • 2.Rf3+
          • 2...Kd2
            • 3.Qd3+
              • 3...Kc1
                • 4.Rf1#
                • 4.Qc2#
              • 3...Ke1
                • 4.Rf1#
          • 2...Ke2
            • 3.Qd3+
              • 3...Ke1
                • 4.Rf1#
          • 2...Kd4
            • 3.exd6
              • threat
                • 4.Rd3#
      • 1...Rh1
        • 2.Qf3+
          • 2...Kd2
            • 3.Rxh1
              • threat
                • 4.Rd1#
      • 1...g4
        • 2.Bb5+
          • 2...Sxb5
            • 3.Kc4
              • threat
                • 4.Qd3#
              • 3...Kd2
                • 4.Qd3#
              • 3...Ke3
                • 4.Qd3#
        • 2.Kc4
          • threat
            • 3.Qd3#
          • 2...b5+
            • 3.Bxb5
              • threat
                • 4.Qd3#
              • 3...Kd2
                • 4.Qd3#
              • 3...Ke3
                • 4.Qd3#
            • 3.cxb5 ep
              • threat
                • 4.Qd3#
              • 3...Kd2
                • 4.Qd3#
              • 3...Ke3
                • 4.Qd3#

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).