Problem Display
PID: 269379 (8/N7/8/3k4/8/8/4P2B/Q5K1 w - - 0 1)

Petrasinovic, Petrasin

Zadachi i Etyudi, 2018

8/N7/8/3k4/8/8/4P2B/Q5K1

#4

5 + 1


3713 Snap 2023

SOLUTION


  • SOUND
  • Keys
    • 1.Qb1!
      • 1...Kc4
        • 2.Bd6
          • threat
            • 3.Qd3#
          • 2...Kc3
            • 3.Kf2
              • 3...Kd2
                • 4.Bb4#
              • 3...Kc4
                • 4.Qd3#
              • 3...Kd4
                • 4.Qd3#
          • 2...Kd5
            • 3.Qg6
              • 3...Kc4
                • 4.Qd3#
              • 3...Kd4
                • 4.Qd3#
      • 1...Kd4
        • 2.Bd6
          • threat
            • 3.Qd3#
          • 2...Kc3
            • 3.Kf2
              • 3...Kd2
                • 4.Bb4#
              • 3...Kc4
                • 4.Qd3#
              • 3...Kd4
                • 4.Qd3#
          • 2...Kd5
            • 3.Qg6
              • 3...Kc4
                • 4.Qd3#
              • 3...Kd4
                • 4.Qd3#
      • 1...Kc5
        • 2.Qb3
          • 2...Kd4
            • 3.Bd6
              • 3...Ke4
                • 4.Qd3#
      • 1...Ke6
        • 2.Qg6+
          • 2...Kd5
            • 3.Bd6
              • 3...Kc4
                • 4.Qd3#
              • 3...Kd4
                • 4.Qd3#
          • 2...Kd7
            • 3.Qf7+
              • 3...Kd8
                • 4.Bc7#
          • 2...Ke7
            • 3.Bc7
              • 3...Kd7
                • 4.Qf7#
              • 3...Kf8
                • 4.Bd6#

Anticipated by 197105(2018)

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).