Problem Display
PID: 285880 (5B2/8/2K5/8/4k3/8/5Q2/8 w - - 0 1)

van Rey, Loek

Probleemblad, 1989

5B2/8/2K5/8/4k3/8/5Q2/8

#4

3 + 1


3713 Snap 2026
6490 yacpdb 2026

SOLUTION


  • SOUND
  • Keys
    • 1.Bh6!
      • threat
        • 2.Kc5
          • threat
            • 3.Qf4+
              • 3...Kd3
                • 4.Qc4#
          • 2...Kd3
            • 3.Qd2+
              • 3...Ke4
                • 4.Qd5#
          • 2...Ke5
            • 3.Qf7
              • 3...Ke4
                • 4.Qd5#
      • 1...Kd3
        • 2.Kc5
          • threat
            • 3.Qd2+
              • 3...Ke4
                • 4.Qd5#
          • 2...Kc3
            • 3.Qa2
              • 3...Kd3
                • 4.Qc4#
          • 2...Ke4
            • 3.Qf4+
              • 3...Kd3
                • 4.Qc4#
      • 1...Ke5
        • 2.Qf3
          • threat
            • 3.Bg7+
              • 3...Ke6
                • 4.Qf6#
          • 2...Kd4
            • 3.Bg7+
              • 3...Kc4
                • 4.Qc3#
          • 2...Ke6
            • 3.Bg5
              • 3...Ke5
                • 4.Qd5#

Anticipated by 35312(1925), 233626(1942)

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).