MESON Chess Problem Database

Problem Display
PID: 171327 (3B4/1N6/K1k5/8/2n5/3Q1b2/8/8 w - - 0 1)

Antipov, Viacheslav Pavlovich

Shakh-M (Borovich), 1994

3B4/1N6/K1k5/8/2n5/3Q1b2/8/8

#2

4 + 3

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Sb2
      • 2.Qb5#
      • 2.Qd6#
    • 1...Sd2
      • 2.Qb5#
      • 2.Qd6#
    • 1...Sa3
      • 2.Qd6#
    • 1...Se3
      • 2.Qb5#
      • 2.Qd6#
    • 1...Sa5
      • 2.Qb5#
      • 2.Qd6#
    • 1...Se5
      • 2.Qb5#
      • 2.Qd6#
    • 1...Sb6
      • 2.Qb5#
      • 2.Qd6#
    • 1...Sd6
      • 2.Qxd6#
  • Tries
    • 1.Bb6?
      • threat
        • 2.Sd8#
      • 1...Sxb6
        • 2.Qd6#
      • 1...Sd6
        • 2.Qxd6#
      • 1...Bd5!
  • Keys
    • 1.Qf5!
      • threat
        • 2.Qb5#
      • 1...Se5
        • 2.Qe6#
      • 1...Bd5
        • 2.Qc8#
      • 1...Sa3
        • 2.Qe6#
      • 1...Sd6
        • 2.Sa5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • S(b);N_GUARD::QAR1(A)
    • S(b);N_GUARD::QAR1(A),XS(b)
  • Tries
    • Try
      • B(D);
      • Threat
        • S(C)
      • Vars
        • S(b);N_GUARD,XB(D)::QAR1(A)
        • S(b);N_GUARD::QAR1(A),XS(b)
      • Refutation
        • B(a);
  • Actual
    • Q(A);
    • Threat
      • QAB1(A)
    • Vars
      • S(b);N_GUARD::QAR2(A)
      • B(a);SBLOCK::QAR2(A)
      • S(b);N_GUARD,SBLOCK::S(C)
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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).