Problem Display
PID: 133385 (8/2P5/Q7/PnPk4/3p4/3N2K1/P2P4/8 w - - 0 1)

Bettmann, Edgar

Bettmann, Henry Wald

Bettmann, Jacob

Baltimore American and Commercial Advertiser, 1883

8/2P5/Q7/PnPk4/3p4/3N2K1/P2P4/8

#3

8 + 3


1829 The Theory of Pawn Promotion 1912

SOLUTION


  • SOUND
  • Sets
    • 1...Sa3
      • 2.c8Q
        • threat
          • 3.Qf5#
          • 3.Qce6#
          • 3.Qcb7#
          • 3.Qae6#
          • 3.Qcc6#
          • 3.Qca8#
        • 2...Ke4
          • 3.Qce6#
  • Tries
    • 1.Qxb5?
      • threat
        • 2.c8Q
          • 2...Ke4
            • 3.Qe6#
      • 1...Ke4
        • 2.c8Q
          • 2...Kd5
            • 3.Qf5#
            • 3.Qcc6#
      • 1...Ke6!
    • 1.c8Q?
      • threat
        • 2.Qce6#
        • 2.Qae6#
      • 1...Ke4
        • 2.Sf2+
          • 2...Kd5
            • 3.Qae6#
          • 2...Ke5
            • 3.Qce6#
            • 3.Qae6#
        • 2.Qxb5
          • 2...Kd5
            • 3.Qf5#
            • 3.Qcc6#
        • 2.Qg6+
          • 2...Kd5
            • 3.Qce6#
            • 3.Qge6#
            • 3.Qcg8#
      • 1...Sd6
        • 2.Sf4+
          • 2...Ke4
            • 3.Qe2#
            • 3.Qe6#
          • 2...Ke5
            • 3.Qe6#
        • 2.Qd7
          • 2...Ke4
            • 3.Qe6#
        • 2.Qxd6+
          • 2...Kc4
            • 3.Qca6#
          • 2...Ke4
            • 3.Sf2#
        • 2.Qg8+
          • 2...Ke4
            • 3.Qe6#
          • 2...Sf7
            • 3.Qga8#
        • 2.cxd6
          • 2...Ke4
            • 3.Qe6#
      • 1...Kc4!
  • Keys
    • 1.c8B!
      • threat
        • 2.Qe6#
      • 1...Kc4
        • 2.Bf5
          • 2...Kd5
            • 3.Qe6#
      • 1...Ke4
        • 2.Qg6+
          • 2...Kd5
            • 3.Qe6#
      • 1...Sd6
        • 2.Qxd6+
          • 2...Kc4
            • 3.Ba6#
          • 2...Ke4
            • 3.Sf2#

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).