Problem Display
PID: 149630 (1b4Q1/2p5/8/8/8/7p/8/4KN1k w - - 0 1)

Ott, Hans

Interlaken Solving Ty., 1961

1b4Q1/2p5/8/8/8/7p/8/4KN1k

#3

3 + 4


15257 Kunstwerke auf 64 Feldern (1922-1966) (Ott, Kummer, Schudel) 1968
15158 Hans Ott Schachprobleme (Kummer) 1986

SOLUTION


  • SOUND
  • Sets
    • 1...h2
      • 2.Se3
        • threat
          • 3.Qg2#
  • Tries
    • 1.Kf2?
      • threat
        • 2.Qd5#
        • 2.Qg1#
      • 1...h2
        • 2.Sg3#
        • 2.Qd5#
        • 2.Qg2#
      • 1...c6
        • 2.Qg1#
      • 1...Ba7+!
    • 1.Qxb8?
      • threat
        • 2.Kf2
          • 2...h2
            • 3.Sg3#
          • 2...c5
            • 3.Qh2#
            • 3.Qb7#
            • 3.Qa8#
          • 2...c6
            • 3.Qh2#
        • 2.Qb2
          • threat
            • 3.Qh2#
          • 2...Kg1
            • 3.Qh2#
          • 2...h2
            • 3.Qxh2#
      • 1...Kg1
        • 2.Qb2
          • threat
            • 3.Qh2#
          • 2...Kh1
            • 3.Qh2#
          • 2...h2
            • 3.Qxh2#
      • 1...h2
        • 2.Kf2
          • threat
            • 3.Sg3#
        • 2.Qb2
          • threat
            • 3.Qxh2#
          • 2...Kg1
            • 3.Qxh2#
      • 1...Kg2!
  • Keys
    • 1.Ke2!
      • 1...c5
        • 2.Qxb8
          • threat
            • 3.Qh2#
          • 2...Kg1
            • 3.Qh2#
          • 2...Kg2
            • 3.Qh2#
          • 2...h2
            • 3.Qxh2#
      • 1...Ba7
        • 2.Qg3
          • threat
            • 3.Qh2#
          • 2...Bg1
            • 3.Qf3#
          • 2...h2
            • 3.Qxh2#
      • 1...h2
        • 2.Kf3
          • threat
            • 3.Qg2#
        • 2.Se3
          • threat
            • 3.Qg2#
      • 1...c6
        • 2.Qxb8
          • threat
            • 3.Qh2#
          • 2...Kg1
            • 3.Qh2#
          • 2...Kg2
            • 3.Qh2#
          • 2...h2
            • 3.Qxh2#

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).