MESON Chess Problem Database

Problem Display
PID: 198698 (6b1/2bQ4/5Pnn/1R1Nq1pN/1p1Pk3/1P3p2/5P2/B3KB2 w - - 0 1)

de Barbieri, Vittorio

L'Italia Scacchistica, 1921

6b1/2bQ4/5Pnn/1R1Nq1pN/1p1Pk3/1P3p2/5P2/B3KB2

#2

11 + 9

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Qxf6
      • 2.Sdxf6#
      • 2.Shxf6#
    • 1...Sf4
      • 2.Sg3#
  • Tries
    • 1.Qg4+?
      • 1...Qf4
        • 2.Sg3#
      • 1...Sf4
        • 2.Sg3#
      • 1...Sxg4!
  • Keys
    • 1.Qc6!
      • threat
        • 2.Qc2#
      • 1...Kf5+
        • 2.Se3#
      • 1...Qxd4
        • 2.Sc3#
      • 1...Sf4
        • 2.Sg3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • S(f);S_CUTQ(d)::S(I)
  • Tries
    • Try
      • Q(K);CHECK
      • Vars
        • Q(d);P_SPINQ(d)::S(I)
        • S(f);P_SPINS(f)::S(I)
      • Refutation
        • S(g);XQ(K)
  • Actual
    • Q(K);
    • Threat
      • QAB(K)
    • Vars
      • K(c);CHECK,S_FLIGHT::S(H)
      • Q(d);SBLOCK,XP(F)::QAB(K)+S(H),DCHECK
      • S(f);S_CUTQ(d)::S(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).