Problem Display
PID: 13450 (Q7/8/8/4K3/8/8/5N2/Nk6 w - - 0 1)

Blumenthal, Oscar

Bohemia, 1904

Q7/8/8/4K3/8/8/5N2/Nk6

#3

4 + 1


3238 777 Chess Miniatures in Three 1908
785 Het Belgisch Schaakbord (L'Echiquier Belge) 1955
14986 White-Hume Collection 2017

SOLUTION


  • SOUND
  • Tries
    • 1.Se4?
      • 1...Kc1
        • 2.Qa2
          • 2...Kd1
            • 3.Qd2#
      • 1...Kb2!
    • 1.Qh1+?
      • 1...Ka2
        • 2.Sd3
          • 2...Ka3
            • 3.Qa8#
      • 1...Kb2!
    • 1.Qb7+?
      • 1...Kxa1
        • 2.Sd1
          • 2...Ka2
            • 3.Qb2#
        • 2.Sd3
          • 2...Ka2
            • 3.Qb2#
      • 1...Ka2
        • 2.Sd1
          • threat
            • 3.Qb2#
          • 2...Kxa1
            • 3.Qb2#
          • 2...Ka3
            • 3.Qb3#
        • 2.Sd3
          • threat
            • 3.Qb2#
          • 2...Kxa1
            • 3.Qb2#
          • 2...Ka3
            • 3.Qa6#
            • 3.Qa8#
            • 3.Qb3#
            • 3.Qa7#
      • 1...Kc1!
    • 1.Qa2+?
      • 1...Kc1
        • 2.Sb3#
        • 2.Qc2#
      • 1...Kxa2!
    • 1.Qa4?
      • threat
        • 2.Sd1
          • 2...Kc1
            • 3.Qc2#
      • 1...Kc1
        • 2.Qc2#
      • 1...Kb2!
    • 1.Qb8+?
      • 1...Kxa1
        • 2.Sd1
          • 2...Ka2
            • 3.Qb2#
        • 2.Sd3
          • 2...Ka2
            • 3.Qb2#
      • 1...Ka2
        • 2.Sd1
          • threat
            • 3.Qb2#
          • 2...Kxa1
            • 3.Qb2#
          • 2...Ka3
            • 3.Qb3#
        • 2.Sd3
          • threat
            • 3.Qb2#
          • 2...Kxa1
            • 3.Qb2#
          • 2...Ka3
            • 3.Qa7#
            • 3.Qb3#
            • 3.Qa8#
      • 1...Kc1!
  • Keys
    • 1.Qg2!
      • threat
        • 2.Sd1
          • threat
            • 3.Qb2#
          • 2...Kxa1
            • 3.Qb2#
          • 2...Kc1
            • 3.Qc2#
        • 2.Sd3
          • 2...Kxa1
            • 3.Qb2#
      • 1...Kxa1
        • 2.Sd1
          • 2...Kb1
            • 3.Qb2#
        • 2.Sd3
          • 2...Kb1
            • 3.Qb2#
      • 1...Kc1
        • 2.Sd3+
          • 2...Kb1
            • 3.Qb2#
          • 2...Kd1
            • 3.Qc2#
      • 1...Ka2
        • 2.Sd3+
          • 2...Kxa1
            • 3.Qb2#
          • 2...Kb1
            • 3.Qb2#
          • 2...Ka3
            • 3.Qa8#
      • 1...Kb2
        • 2.Sd3+
          • 2...Kxa1
            • 3.Qb2#
          • 2...Kb1
            • 3.Qb2#
          • 2...Ka3
            • 3.Qa8#
          • 2...Kc3
            • 3.Qc2#

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).