Problem Display
PID: 93658 (8/8/N3Qp1r/1k6/1P4R1/2p1Pp1p/pqpp3K/1r1b4 w - - 0 1)

Vasta, Jan

Parallele 50, 1949

8/8/N3Qp1r/1k6/1P4R1/2p1Pp1p/pqpp3K/1r1b4

#3

6 + 12


6490 yacpdb 2009

SOLUTION


  • SOUND
  • Sets
    • 1...Ka4
      • 2.Sc5+
        • 2...Ka3
          • 3.Qa6#
        • 2...Kb5
          • 3.Qa6#
    • 1...Qb3
      • 2.Sc7+
        • 2...Ka4
          • 3.Qa6#
  • Tries
    • 1.Rc4?
      • threat
        • 2.Qc6#
      • 1...Ka4
        • 2.Sc5+
          • 2...Ka3
            • 3.Qa6#
          • 2...Kb5
            • 3.Qa6#
      • 1...f5
        • 2.Rc5+
          • 2...Ka4
            • 3.Ra5#
      • 1...Qxb4!
    • 1.Rg5+?
      • 1...f5
        • 2.Rxf5+
          • 2...Ka4
            • 3.Ra5#
      • 1...fxg5!
    • 1.Qc4+?
      • 1...Ka4
        • 2.Sc5+
          • 2...Ka3
            • 3.Qa6#
      • 1...Kb6!
    • 1.Qb6+?
      • 1...Ka4
        • 2.Sc5+
          • 2...Ka3
            • 3.Qa5#
            • 3.Qa7#
            • 3.Qa6#
        • 2.Qa5+
          • 2...Kb3
            • 3.Sc5#
      • 1...Kxb6!
  • Keys
    • 1.Rf4!
      • threat
        • 2.Rf5+
          • 2...Ka4
            • 3.Ra5#
      • 1...Ka4
        • 2.Sc5+
          • 2...Ka3
            • 3.Qa6#
          • 2...Kb5
            • 3.Qa6#
      • 1...Qxb4
        • 2.Sc7+
          • 2...Ka4
            • 3.Qxa2#
          • 2...Ka5
            • 3.Qa6#
          • 2...Kc5
            • 3.Rf5#
      • 1...f5
        • 2.Rxf5+
          • 2...Ka4
            • 3.Ra5#
      • 1...Qb3
        • 2.Sc7+
          • 2...Ka4
            • 3.Qa6#
      • 1...Rh5
        • 2.Qd7+
          • 2...Kxa6
            • 3.Rxf6#
          • 2...Kb6
            • 3.Rxf6#

FEATURES


NOT CLASSIFIED


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).