MESON Chess Problem Database

Problem Display
PID: 154421 (8/8/8/1ppN2p1/prp1Q1K1/rPPP4/b1k1N3/5R2 w - - 0 1)

Larsen, Karl Adolf Koefoed

HM., Morgenbladet, 1930

8/8/8/1ppN2p1/prp1Q1K1/rPPP4/b1k1N3/5R2

#2

8 + 9

4035 Aarsskrift for DSK 1935

SOLUTION

  • SOUND
  • Tries
    • 1.Sd4+?
      • 1...Kb2
        • 2.Qg2#
        • 2.Qe2#
      • 1...Kd2
        • 2.Qe2#
        • 2.Qe3#
      • 1...cxd4!
  • Keys
    • 1.Qg2!
      • 1...cxb3+
        • 2.Sef4#
      • 1...cxd3+
        • 2.Sd4#
      • 1...Kb2
        • 2.Sd4#
      • 1...Kd2
        • 2.Sc1#
        • 2.Sef4#
      • 1...Kxb3
        • 2.Sc1#
      • 1...Kxd3
        • 2.Sc1#
      • 1...Raxb3
        • 2.Sef4#
      • 1...Rbxb3
        • 2.Sef4#
      • 1...Bxb3
        • 2.Sef4#
      • 1...axb3
        • 2.Sef4#
      • 1...Bb1
        • 2.Sc1#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 10
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(B);CHECK
      • Refutation
        • P(h);XS(B)
  • Actual
    • Q(F);
    • Vars
      • P(f);CHECK,SBLOCK,XP(C)::QAR(F)+S(B)
      • P(f);CHECK,SBLOCK,XP(E)::QAR(F)+S(B),DCHECK
      • K(b);P-FLIGHT::QAR(F)+S(B)
      • K(b);S_FLIGHT,XP(C)::S(B)
      • K(b);S_FLIGHT,XP(E)::S(B)
      • R(c);SBLOCK,XP(C)::QAR(F)+S(B)
      • R(e);SBLOCK,XP(C)::QAR(F)+S(B)
      • B(a);SBLOCK,XP(C)::QAR(F)+S(B)
      • P(d);SBLOCK,XP(C)::QAR(F)+S(B)
      • B(a);SBLOCK::QAR(F)+S(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).