Problem Display
PID: 248518 (1B6/5p2/PPP2P1r/P2k1pNb/P7/KpQpp1PP/8/2n5 w - - 0 1)

Apel, Paul

Schach, 1960

1B6/5p2/PPP2P1r/P2k1pNb/P7/KpQpp1PP/8/2n5

#4

12 + 9


6490 yacpdb 2021
  • SOUND
  • Keys
    • 1.Kb2!
      • threat
        • 2.Qe5+
          • 2...Kc4
            • 3.Qb5+
              • 3...Kd4
                • 4.Be5#
      • 1...Bf3
        • 2.Qe5+
          • 2...Kc4
            • 3.Qb5+
              • 3...Kd4
                • 4.Be5#
            • 3.Sxf3
              • threat
                • 4.Qd4#
                • 4.Qb5#
              • 3...Kb4
                • 4.Qb5#
      • 1...Bg6
        • 2.Qe5+
          • 2...Kc4
            • 3.Qb5+
              • 3...Kd4
                • 4.Be5#
            • 3.Sf3
              • threat
                • 4.Qd4#
                • 4.Qb5#
              • 3...Kb4
                • 4.Qb5#
      • 1...e2
        • 2.Be5
          • threat
            • 3.Qd4+
              • 3...Kxc6
                • 4.Qd6#
            • 3.Bd4
              • threat
                • 4.Qc5#
              • 3...Kd6
                • 4.Qc5#
          • 2...Rxf6
            • 3.Qb4
              • threat
                • 4.Qb5#
              • 3...Kxe5
                • 4.Qc5#
              • 3...Kxc6
                • 4.Qb5#
              • 3...Rxc6
                • 4.Qd4#
      • 1...f4
        • 2.Qe5+
          • 2...Kc4
            • 3.Qb5+
              • 3...Kd4
                • 4.Be5#
            • 3.Bd6
              • threat
                • 4.Qe4#
                • 4.Qc5#


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).