Problem Display
PID: 175842 (8/K7/P7/8/B2B1p2/N6R/k1P2P1P/5n2 w - - 0 1)

Onitiu, Valerian

Deutsche Schachzeitung, 1898

8/K7/P7/8/B2B1p2/N6R/k1P2P1P/5n2

#4

9 + 3


6490 yacpdb 2018

SOLUTION


  • SOUND
  • Keys
    • 1.Rh5!
      • threat
        • 2.Bb3+
          • 2...Kxa3
            • 3.Bc3
              • threat
                • 4.Ra5#
      • 1...Kxa3
        • 2.Ra5
          • threat
            • 3.Bc6+
              • 3...Kb4
                • 4.Ra4#
            • 3.Bd7+
              • 3...Kb4
                • 4.Ra4#
            • 3.Be8+
              • 3...Kb4
                • 4.Ra4#
          • 2...Ka2
            • 3.Bb3+
              • 3...Kb1
                • 4.Ra1#
          • 2...Kb4
            • 3.Bc6
              • threat
                • 4.Ra4#
              • 3...Kc4
                • 4.Ra4#
              • 3...Kxa5
                • 4.Bc3#
      • 1...Sd2
        • 2.Ra5
          • 2...Kxa3
            • 3.Bc6+
              • 3...Kb4
                • 4.Ra4#
            • 3.Bd7+
              • 3...Kb4
                • 4.Ra4#
            • 3.Be8+
              • 3...Kb4
                • 4.Ra4#
          • 2...f3
            • 3.Bc3
              • 3...Kxa3
                • 4.Bb3#
                • 4.Bb5#
                • 4.Bc6#
                • 4.Bd7#
                • 4.Be8#
              • 3...Sb1
                • 4.Bb3#
              • 3...Sf1
                • 4.Bb3#
              • 3...Sb3
                • 4.Bxb3#
              • 3...Sc4
                • 4.Bb3#
              • 3...Se4
                • 4.Bb3#
      • 1...Se3
        • 2.Ra5
          • threat
            • 3.Bb3#
          • 2...Kxa3
            • 3.Bc6+
              • 3...Kb4
                • 4.Ra4#
            • 3.Bd7+
              • 3...Kb4
                • 4.Ra4#
            • 3.Be8+
              • 3...Kb4
                • 4.Ra4#
          • 2...Sxc2
            • 3.Bxc2
              • 3...f3
                • 4.Sb1#
                • 4.Sc4#
                • 4.Sb5#
      • 1...Sg3
        • 2.Ra5
          • threat
            • 3.Bb3#
          • 2...Kxa3
            • 3.Bc6+
              • 3...Kb4
                • 4.Ra4#
            • 3.Bd7+
              • 3...Kb4
                • 4.Ra4#
            • 3.Be8+
              • 3...Kb4
                • 4.Ra4#

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).