MESON Chess Problem Database

Problem Display
PID: 228283 (2r2b2/1N6/3P3p/1p2P3/npk3p1/4KBQ1/8/1N6 w - - 0 1)

Erlin, Konrad (AKA Erlinger, Konrad)

Tidskrift for Schack, 1911

2r2b2/1N6/3P3p/1p2P3/npk3p1/4KBQ1/8/1N6

#2

7 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Rc5
      • 2.Sa5#
    • 1...Sc3
      • 2.Sd2#
    • 1...Sc5
      • 2.Sa5#
    • 1...b3
      • 2.Qf4#
      • 2.Qxg4#
    • 1...gxf3
      • 2.Qg8#
  • Keys
    • 1.Qg2!
      • threat
        • 2.Bd5#
      • 1...Kb3
        • 2.Sa5#
      • 1...gxf3
        • 2.Qg8#
      • 1...Rc5
        • 2.Sa5#
      • 1...Sc3
        • 2.Sd2#
      • 1...Sb6
        • 2.Qc2#
      • 1...b3
        • 2.Qxg4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • R(g);SBLOCK::S(G)
    • S(a);SBLOCK::S(A)
    • S(a);SBLOCK::S(G)
    • P(d);OGATE,XB(C)::QAB(D)
  • Actual
    • Q(D);
    • Threat
      • B(C)
    • Vars
      • K(c);S_FLIGHT::S(G)
      • P(d);OGATE,XB(C)::QAB(D)
      • R(g);SBLOCK::S(G)
      • S(a);SBLOCK::S(A)
      • S(a);N_GUARD::QAR2(D)
      • P(b);SBLOCK::QAR(D),XP(d)
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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).