MESON Chess Problem Database

Problem Display
PID: 112823 (8/Q7/2B5/5n1N/8/3Np3/K5pp/6rk w - - 0 1)

Bertrand, Emile

La Presse, 1898

8/Q7/2B5/5n1N/8/3Np3/K5pp/6rk

#2

5 + 6

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Sg3
      • 2.Sxg3#
    • 1...Sd4
      • 2.Sg3#
    • 1...Sh4
      • 2.Sg3#
    • 1...Sd6
      • 2.Sg3#
    • 1...Sh6
      • 2.Sg3#
    • 1...Se7
      • 2.Sg3#
    • 1...Sg7
      • 2.Sg3#
    • 1...e2
      • 2.Sf2#
  • Keys
    • 1.Qg7!
      • 1...Ra1+
        • 2.Qxa1#
      • 1...Sxg7
        • 2.Sg3#
      • 1...Rb1
        • 2.Qxg2#
      • 1...Rc1
        • 2.Qxg2#
      • 1...Rd1
        • 2.Qxg2#
      • 1...Re1
        • 2.Qxg2#
      • 1...Rf1
        • 2.Qxg2#
      • 1...Sg3
        • 2.Sxg3#
      • 1...Sd4
        • 2.Sg3#
      • 1...Sh4
        • 2.Sg3#
      • 1...Sd6
        • 2.Sg3#
      • 1...Sh6
        • 2.Sg3#
      • 1...Se7
        • 2.Sg3#
      • 1...e2
        • 2.Sf2#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
    • S(f);N_GUARD::S(C),XS(f)
    • S(f);N_GUARD::S(C)
    • P(e);N_GUARD::S(B)
  • Actual
    • Q(E);
    • Vars
      • R(a);CHECK,OGATEB::QAB1(E),XR(a)
      • S(f);N_GUARD,XQ(E)::S(C)
      • R(a);N_GUARD::QAB1(E),XP(c)
      • S(f);N_GUARD::S(C),XS(f)
      • S(f);N_GUARD::S(C)
      • P(e);N_GUARD::S(B)
HTML5 logo

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).