Problem Display
PID: 89477 (8/3p4/3Q4/Pk6/8/8/1PP5/1K6 w - - 0 1)

Cumpe, Josef

Zlata Praha, 1923

8/3p4/3Q4/Pk6/8/8/1PP5/1K6

#3

5 + 2


6490 yacpdb 2009

SOLUTION


  • SOUND
  • Sets
    • 1...Ka4
      • 2.Qc5
        • threat
          • 3.b3#
    • 1...Kxa5
      • 2.c4
        • 2...Ka4
          • 3.Qa3#
  • Tries
    • 1.Ka1?
      • 1...Ka4
        • 2.Qc5
          • threat
            • 3.b3#
      • 1...Kxa5
        • 2.c4
          • 2...Ka4
            • 3.Qa3#
      • 1...Kc4!
    • 1.Ka2?
      • 1...Ka4
        • 2.Qc5
          • threat
            • 3.b3#
        • 2.Qb6
          • threat
            • 3.b3#
      • 1...Kxa5
        • 2.c4
          • 2...Ka4
            • 3.Qa3#
      • 1...Kc4!
    • 1.Qc5+?
      • 1...Ka4
        • 2.b3#
      • 1...Ka6
        • 2.Qb6#
      • 1...Kxc5!
    • 1.Qd5+?
      • 1...Ka4
        • 2.Qc5
          • threat
            • 3.b3#
        • 2.c4
          • threat
            • 3.Qb5#
          • 2...Kb3
            • 3.Qb5#
          • 2...Kb4
            • 3.Qb5#
      • 1...Kb4
        • 2.c4
          • threat
            • 3.Qb5#
          • 2...Kb3
            • 3.Qb5#
          • 2...Ka4
            • 3.Qb5#
      • 1...Ka6!
    • 1.Qb6+?
      • 1...Ka4
        • 2.Ka2
          • threat
            • 3.b3#
        • 2.Qc5
          • threat
            • 3.b3#
        • 2.b3+
          • 2...Ka3
            • 3.Qc5#
            • 3.Qd6#
        • 2.c3
          • threat
            • 3.Qb4#
        • 2.c4
          • threat
            • 3.Qb5#
      • 1...Kc4!
    • 1.b4?
      • 1...Kc4
        • 2.Qc5#
      • 1...Ka4!
    • 1.c3?
      • 1...Kxa5
        • 2.c4
          • 2...Ka4
            • 3.Qa3#
      • 1...Kc4!
    • 1.c4+?
      • 1...Kxa5
        • 2.Ka1
          • 2...Ka4
            • 3.Qa3#
        • 2.Kc1
          • 2...Ka4
            • 3.Qa3#
        • 2.Ka2
          • 2...Ka4
            • 3.Qa3#
        • 2.Kc2
          • 2...Ka4
            • 3.Qa3#
      • 1...Kxc4!
    • 1.a6?
      • 1...Ka4
        • 2.Qc5
          • threat
            • 3.b3#
      • 1...Ka5
        • 2.c4
          • 2...Ka4
            • 3.Qa3#
      • 1...Kc4!
  • Keys
    • 1.Kc1!
      • 1...Ka4
        • 2.Qc5
          • threat
            • 3.b3#
      • 1...Kc4
        • 2.b3+
          • 2...Kc3
            • 3.Qc5#
            • 3.Qd2#
          • 2...Kb5
            • 3.Qb6#
      • 1...Kxa5
        • 2.c4
          • 2...Ka4
            • 3.Qa3#

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).