MESON Chess Problem Database

Problem Display
PID: 245542 (6K1/8/5B1k/8/5N2/8/4Qb1q/8 w - - 0 1)

Shumarin, Vladimir Pavlovich

Kudesnik, 2008

6K1/8/5B1k/8/5N2/8/4Qb1q/8

#2

4 + 3

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qh5
      • 2.Qxh5#
    • 1...Be3
      • 2.Qxh2#
    • 1...Bd4
      • 2.Qxh2#
    • 1...Bh4
      • 2.Qh5#
    • 1...Bc5
      • 2.Qxh2#
    • 1...Bb6
      • 2.Qxh2#
    • 1...Ba7
      • 2.Qxh2#
  • Keys
    • 1.Qg4!
      • threat
        • 2.Bg5#
        • 2.Bg7#
        • 2.Qg5#
        • 2.Qg6#
        • 2.Qg7#
      • 1...Qxf4
        • 2.Bg7#
      • 1...Qg1
        • 2.Bg5#
        • 2.Bg7#
      • 1...Qg3
        • 2.Bg5#
        • 2.Bg7#
      • 1...Qg2
        • 2.Bg5#
        • 2.Bg7#
      • 1...Qh4
        • 2.Bg7#
        • 2.Qg6#
        • 2.Qg7#
      • 1...Qh5
        • 2.Bg7#
        • 2.Qxh5#
        • 2.Qg7#
      • 1...Bd4
        • 2.Bg5#
        • 2.Qg5#
        • 2.Qg6#
        • 2.Qg7#
      • 1...Bh4
        • 2.Bg7#
        • 2.Qh5#
        • 2.Qg6#
        • 2.Qg7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 7
  • Sets
    • Q(b);N_GUARD::QAR1(A),XQ(b)
    • B(a);OGATE::QAR(A),XQ(b)
    • B(a);S_CUTQ(b)::QAR1(A)
    • B(a);OGATE,SBLOCK::QAR(A),XQ(b)
  • Actual
    • Q(A);
    • Threat
      • DUALS(5)
    • Vars
      • Q(b);XS(B)::B(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).