MESON Chess Problem Database

Problem Display
PID: 174141 (K2B4/3p3p/6pR/3N2N1/R2n1pk1/6p1/4n1p1/1Q6 w - - 0 1)

Buchner, Richard

Westfalische Allgemeine Volkszeitung, 1928

K2B4/3p3p/6pR/3N2N1/R2n1pk1/6p1/4n1p1/1Q6

#2

7 + 9

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Sb3
      • 2.Se3#
    • 1...Sf3
      • 2.Se3#
    • 1...Sb5
      • 2.Se3#
    • 1...Sc6
      • 2.Se3#
    • 1...Se6
      • 2.Se3#
  • Tries
    • 1.Qxg6?
      • threat
        • 2.Sf6#
      • 1...f3
        • 2.Sxh7#
      • 1...hxg6!
  • Keys
    • 1.Qb5!
      • threat
        • 2.Sf6#
      • 1...Kf5
        • 2.Se3#
      • 1...Sxb5
        • 2.Se3#
      • 1...Sf5
        • 2.Qxe2#
      • 1...f3
        • 2.Qxd7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 4
  • Sets
    • S(d);P_SPINP(e)::S(C)
  • Tries
    • Try
      • Q(A);XP(g)
      • Threat
        • S(C)
      • Vars
        • P(e);P_SPINS(d),SBLOCK::QAR(A)+S(D),XP(i)
      • Refutation
        • P(i);XQ(A)
  • Actual
    • Q(A);
    • Threat
      • S(C)
    • Vars
      • K(f);S_FLIGHT::QAR(A)+S(C),DCHECK
      • S(d);P_SPINP(e),XQ(A)::S(C)
      • S(d);N_GUARD,P_SPINP(e),SBLOCK::QAB(A),XS(a)
      • P(e);P_SPINS(d)::QAB(A),XP(h)
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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).