MESON Chess Problem Database

Problem Display
PID: 93142 (3N4/nKp4r/2P2pNb/1pPk2n1/1Q4P1/5p1p/4P3/8 w - - 0 1)

Westberg, CE

Tidskrift for Schack, 1912

3N4/nKp4r/2P2pNb/1pPk2n1/1Q4P1/5p1p/4P3/8

#2

8 + 10

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Se6
      • 2.e4#
    • 1...Sf7
      • 2.e4#
  • Tries
    • 1.e3?
      • threat
        • 2.Qd4#
      • 1...Se6
        • 2.e4#
      • 1...Sxc6!
  • Keys
    • 1.Se6!
      • threat
        • 2.Sef4#
      • 1...Kxe6
        • 2.Qb3#
      • 1...Sxe6
        • 2.e4#
      • 1...Se4
        • 2.Qb3#
      • 1...Sf7
        • 2.Sxc7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • S(e);N_GUARD::P(A)
  • Tries
    • Try
      • P(A);
      • Threat
        • QAR1(B)
      • Vars
        • S(e);N_GUARD::P(A)
      • Refutation
        • S(h);XP(E)
  • Actual
    • S(H);
    • Threat
      • S(H)
    • Vars
      • K(d);S_FLIGHT,XS(H)::QAB(B)
      • S(e);N_GUARD,SBLOCK,XS(H)::P(A)
      • S(e);SBLOCK::QAB(B)
      • S(e);S_CUTR(j)::S(H),XP(i)
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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).