MESON Chess Problem Database

Problem Display
PID: 86893 (2Q3R1/2PB1p2/4n3/3K4/3p1k2/4p3/4P3/8 w - - 0 1)

Koshelenko, Valery Fedotovich

Kukin, Gennady

Uralski Problemist, 1999

2Q3R1/2PB1p2/4n3/3K4/3p1k2/4p3/4P3/8

#2

6 + 5

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Sc5
      • 2.Rg4#
    • 1...Sxc7+
      • 2.Qxc7#
    • 1...Sd8
      • 2.Rg4#
    • 1...Sf8
      • 2.Rg4#
  • Keys
    • 1.Qd8!
      • threat
        • 2.Qf6#
      • 1...Sxc7+
        • 2.Qxc7#
      • 1...Kf5
        • 2.Qg5#
      • 1...Sxd8
        • 2.Rg4#
      • 1...Sg5
        • 2.Qxg5#
      • 1...Sg7
        • 2.Qh4#
      • 1...f5
        • 2.Qh4#
      • 1...f6
        • 2.Qxf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 2
  • Sets
    • S(d);::R1(F)
    • S(d);CHECK,OGATE,XP(C)::QAB(E),XS(d)
  • Actual
    • Q(E);
    • Threat
      • QAR2(E)
    • Vars
      • S(d);CHECK,OGATE,XP(C)::QAB(E),XS(d)
      • K(c);P-FLIGHT,P_SPINS(d)::QAR1(E)
      • S(d);XQ(E)::R1(F)
      • S(d);N_GUARD::QAB1(E),XS(d)
      • S(d);::QAR2(E)
      • P(e);SBLOCK::QAR2(E)
      • P(e);::QAR2(E),XP(e)
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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).