Problem Display
PID: 264262 (1N3nK1/1p5p/1N4p1/k1Bp1p2/B2p2r1/2p2r2/b6Q/8 w - - 0 1)

Goldstein, Alexander

3rd Prize, Prace, 1948

1N3nK1/1p5p/1N4p1/k1Bp1p2/B2p2r1/2p2r2/b6Q/8

#3

6 + 12


6490 yacpdb 2022

SOLUTION


  • SOUND
  • Sets
    • 1...Rd3
      • 2.Qd6
        • threat
          • 3.Bb4#
    • 1...Rg5
      • 2.Qd6
        • threat
          • 3.Bb4#
    • 1...Bc4
      • 2.Qd6
        • threat
          • 3.Bb4#
  • Tries
    • 1.Sc6+?
      • 1...Ka6
        • 2.Qb8
          • threat
            • 3.Qa7#
            • 3.Qa8#
      • 1...bxc6!
    • 1.Bb4+?
      • 1...Kxb4
        • 2.Qd6+
          • 2...Ka5
            • 3.Qc5#
      • 1...Kxb6!
    • 1.Qxa2?
      • threat
        • 2.Bc6#
        • 2.Bd7#
        • 2.Be8#
      • 1...Rg2
        • 2.Qa3
          • threat
            • 3.Bc6#
            • 3.Bd7#
            • 3.Be8#
            • 3.Qb4#
      • 1...c2
        • 2.Bc6+
          • 2...Ra3
            • 3.Qxa3#
        • 2.Bd7+
          • 2...Ra3
            • 3.Qxa3#
        • 2.Be8+
          • 2...Ra3
            • 3.Qxa3#
      • 1...d3
        • 2.Bc6+
          • 2...Ra4
            • 3.Qxa4#
        • 2.Bd7+
          • 2...Ra4
            • 3.Qxa4#
        • 2.Be8+
          • 2...Ra4
            • 3.Qxa4#
        • 2.Qb3
          • threat
            • 3.Qb5#
          • 2...Rxa4
            • 3.Qxa4#
          • 2...Rb4
            • 3.Qxb4#
      • 1...Rf2!
    • 1.Qb2?
      • threat
        • 2.Qb4#
        • 2.Qb5#
      • 1...Bb3
        • 2.Qxb3
          • threat
            • 3.Qb4#
            • 3.Qb5#
      • 1...cxb2!
  • Keys
    • 1.Qc7!
      • threat
        • 2.Qxb7
          • threat
            • 3.Sc6#
            • 3.Qa6#
            • 3.Qa8#
            • 3.Qa7#
      • 1...Bc4
        • 2.Qd6
          • threat
            • 3.Bb4#
      • 1...Sd7
        • 2.Bxd7
          • threat
            • 3.Sc4#
          • 2...Bc4
            • 3.Sxc4#
      • 1...d3
        • 2.Bd4
          • threat
            • 3.Qxc3#
            • 3.Qc5#
          • 2...Kb4
            • 3.Qxc3#
            • 3.Qc5#
          • 2...Bc4
            • 3.Bxc3#

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).