MESON Chess Problem Database

Problem Display
PID: 91887 (8/8/8/8/8/4QN2/7p/5K1k w - - 0 1)

Gruber, Hans

Deutsche Schachzeitung, 1978

8/8/8/8/8/4QN2/7p/5K1k

#2

3 + 2

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Keys
    • 1.Sg1!
      • threat
        • 2.Qf3#
        • 2.Qe4#
      • 1...hxg1Q+
        • 2.Qxg1#
      • 1...hxg1R+
        • 2.Qxg1#
      • 1...hxg1S
        • 2.Qxg1#
      • 1...hxg1B
        • 2.Qxg1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Actual
    • S(C);
    • Threat
      • DUALS(2)
    • Vars
      • P(b);CHECK,OGATE,XS(C)::QAR1(B),XQ(b)
      • P(b);CHECK,OGATE,XS(C)::QAR1(B),XR(b)
      • P(b);OGATE,XS(C)::QAR1(B),XS(b)
      • P(b);OGATE,XS(C)::QAR1(B),XB(b)
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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).