MESON Chess Problem Database

Problem Display
PID: 130180 (8/2RKR3/1p3p2/n2k2n1/1P3P2/2P1P3/3P4/8 w - - 0 1)

de Koning, Josef JM

Schaakblad, 1908

8/2RKR3/1p3p2/n2k2n1/1P3P2/2P1P3/3P4/8

#2

8 + 5

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Sb3
      • 2.c4#
    • 1...Sb7
      • 2.c4#
    • 1...Sf3
      • 2.e4#
    • 1...Sh3
      • 2.e4#
    • 1...Sf7
      • 2.e4#
    • 1...Sh7
      • 2.e4#
    • 1...b5
      • 2.Rc5#
    • 1...f5
      • 2.Re5#
  • Keys
    • 1.d3!
      • 1...Sb3
        • 2.c4#
      • 1...Sc4
        • 2.dxc4#
      • 1...Sc6
        • 2.c4#
      • 1...Sb7
        • 2.c4#
      • 1...Sf3
        • 2.e4#
      • 1...Sh3
        • 2.e4#
      • 1...Se4
        • 2.dxe4#
      • 1...Se6
        • 2.e4#
      • 1...Sf7
        • 2.e4#
      • 1...Sh7
        • 2.e4#
      • 1...b5
        • 2.Rc5#
      • 1...f5
        • 2.Re5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • S(a);N_GUARD::P(B)
    • S(c);N_GUARD::P(C)
    • P(d);N_GUARD::R1(F)
    • P(e);N_GUARD::R1(H)
  • Actual
    • P(A);
    • Vars
      • S(a);N_GUARD::P(B)
      • S(a);OGATE::P(A),XS(a)
      • S(c);N_GUARD::P(C)
      • S(c);OGATE::P(A),XS(c)
      • P(d);N_GUARD::R1(F)
      • P(e);N_GUARD::R1(H)
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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).