MESON Chess Problem Database

Problem Display
PID: 187619 (2b1N3/5Q2/4p3/1n3R2/3pk2P/4b2K/4B3/8 w - - 0 1)

Tichy, Pravoslav

Besedy casu, 1909

2b1N3/5Q2/4p3/1n3R2/3pk2P/4b2K/4B3/8

#2

6 + 6

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Ba6
      • 2.Qxe6#
    • 1...Bb7
      • 2.Qxe6#
    • 1...Sa3
      • 2.Sd6#
    • 1...Sc3
      • 2.Sd6#
    • 1...Sd6
      • 2.Sxd6#
    • 1...Sa7
      • 2.Sd6#
    • 1...Sc7
      • 2.Sd6#
  • Keys
    • 1.Qc7!
      • threat
        • 2.Qe5#
      • 1...Kxf5
        • 2.Bd3#
      • 1...Sxc7
        • 2.Sd6#
      • 1...exf5
        • 2.Sf6#
      • 1...Bf4
        • 2.Qxf4#
      • 1...e5
        • 2.Qxe5#
      • 1...Sd6
        • 2.Sxd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 5
  • Sets
    • B(f);N_GUARD::QAR2(E),XP(e)
    • S(d);N_GUARD::S(F)
    • S(d);N_GUARD::S(F),XS(d)
  • Actual
    • Q(E);
    • Threat
      • QAR1(E)
    • Vars
      • K(c);S_FLIGHT,XR(D)::B(A)
      • S(d);N_GUARD,XQ(E)::S(F)
      • P(e);SBLOCK,XR(D)::S(F)
      • B(a);N_GUARD::QAR1(E),XB(a)
      • P(e);P_PINR(D)::QAR1(E),XP(e)
      • S(d);N_GUARD::S(F),XS(d)
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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).