MESON Chess Problem Database

Problem Display
PID: 208902 (8/2Npr3/1Q3p2/1n3k2/1p3P2/1B3K2/2NpR3/8 w - - 0 1)

Quien, Louis

American Chess Journal, 1876

8/2Npr3/1Q3p2/1n3k2/1p3P2/1B3K2/2NpR3/8

#2

7 + 7

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Keys
    • 1.Qg1!
      • threat
        • 2.Qg4#
      • 1...Re3+
        • 2.Sxe3#
      • 1...Sd4+
        • 2.Sxd4#
      • 1...Rg7
        • 2.Se3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Actual
    • Q(F);
    • Threat
      • QAB1(F)
    • Vars
      • R(g);CHECK,N_GUARD::S(A),XR(g)
      • S(c);CHECK,N_GUARD::S(A),XS(c)
      • R(g);N_GUARD::S(A)
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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).