Problem Display
PID: 31986 (1Q6/1P1K4/k2B4/8/8/1p6/8/r7 w - - 0 1)

Kubbel, Leonid Ivanovich (AKA Kubbel, Karl Artur Leonid)

Shakhmaty v SSSR, 1935

1Q6/1P1K4/k2B4/8/8/1p6/8/r7

#3

4 + 3


3296 Shakhmatny zadachi miniaturi 1987

SOLUTION


  • SOUND
  • Sets
    • 1...Ra3
      • 2.Kc6
        • threat
          • 3.Qa8#
        • 2...Ka5
          • 3.Qa7#
          • 3.Qa8#
  • Tries
    • 1.Kc6?
      • threat
        • 2.Qa8#
      • 1...Ka5
        • 2.Qa7#
        • 2.Qa8#
      • 1...Rc1+!
    • 1.Qa8+?
      • 1...Kb6
        • 2.b8Q#
        • 2.b8R#
      • 1...Kb5!
  • Keys
    • 1.Qc8!
      • threat
        • 2.b8Q+
          • 2...Ka5
            • 3.Qb4#
      • 1...Ka5
        • 2.b8Q
          • threat
            • 3.Qb4#
          • 2...Ka4
            • 3.Qa6#
            • 3.Qb4#
          • 2...Ra4
            • 3.Bc7#
      • 1...Kb5
        • 2.b8Q+
          • 2...Ka4
            • 3.Qa6#
            • 3.Qb4#
          • 2...Ka5
            • 3.Qb4#
      • 1...Kb6
        • 2.b8Q+
          • 2...Ka5
            • 3.Qb4#
      • 1...Rc1
        • 2.b8S+
          • 2...Ka5
            • 3.Qa6#
          • 2...Kb5
            • 3.Qa6#
          • 2...Kb6
            • 3.Qa6#
          • 2...Ka7
            • 3.Qa6#
      • 1...Ra4
        • 2.b8Q+
          • 2...Ka5
            • 3.Bc7#
        • 2.b8R+
          • 2...Ka5
            • 3.Bc7#
          • 2...Ka7
            • 3.Bc5#
            • 3.Qb7#

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).