Problem Display
PID: 13238 (7Q/Kp6/1P1k2P1/p7/B7/2p2p2/8/2B5 w - - 0 1)

Chocolous, Jiri

Deutsches Wochenschach, 1893

7Q/Kp6/1P1k2P1/p7/B7/2p2p2/8/2B5

#3

6 + 5


1829 The Theory of Pawn Promotion 1912

SOLUTION


  • SOUND
  • Tries
    • 1.Qd4+?
      • 1...Ke7
        • 2.Ba3+
          • 2...Ke6
            • 3.Bd7#
        • 2.Bg5+
          • 2...Ke6
            • 3.Bd7#
          • 2...Kf8
            • 3.Qh8#
      • 1...Ke6!
    • 1.Qe8?
      • threat
        • 2.Qe4
          • threat
            • 3.Ba3#
          • 2...Kc5
            • 3.Ba3#
      • 1...Kc5
        • 2.Qe4
          • threat
            • 3.Ba3#
          • 2...Kd6
            • 3.Ba3#
      • 1...Kd5!
  • Keys
    • 1.g7!
      • threat
        • 2.g8Q
          • threat
            • 3.Ba3#
          • 2...Kc5
            • 3.Ba3#
          • 2...Ke7
            • 3.Ba3#
            • 3.Qe5#
      • 1...Kc5
        • 2.g8Q
          • threat
            • 3.Ba3#
          • 2...Kb4
            • 3.Qd4#
          • 2...Kd6
            • 3.Ba3#
        • 2.g8B
          • threat
            • 3.Ba3#
          • 2...Kb4
            • 3.Qd4#
          • 2...Kd6
            • 3.Ba3#
      • 1...Kd5
        • 2.g8Q+
          • 2...Ke4
            • 3.Bc2#
          • 2...Kc5
            • 3.Ba3#
          • 2...Kd6
            • 3.Ba3#
        • 2.g8B+
          • 2...Ke4
            • 3.Bc2#
          • 2...Kc5
            • 3.Ba3#
          • 2...Kd6
            • 3.Ba3#
      • 1...Ke5
        • 2.g8Q+
          • 2...Ke4
            • 3.Bc2#
          • 2...Kf5
            • 3.Bc2#
          • 2...Kd6
            • 3.Ba3#
      • 1...Ke6
        • 2.g8Q+
          • 2...Kf5
            • 3.Bc2#
          • 2...Kd6
            • 3.Ba3#
          • 2...Ke7
            • 3.Ba3#
            • 3.Qe5#
      • 1...Ke7
        • 2.g8Q
          • threat
            • 3.Ba3#
            • 3.Qe5#
          • 2...Kd6
            • 3.Ba3#

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).