MESON Chess Problem Database

Problem Display
PID: 202466 (8/p2K2p1/8/1ppkpp2/Np3pN1/1PP1PP2/3P4/3R4 w - - 0 1)

Oosterholt, Cornelis Johannes

Noord-Hollandsch Dagblad, 1923

8/p2K2p1/8/1ppkpp2/Np3pN1/1PP1PP2/3P4/3R4

#2

9 + 9

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...bxc3
      • 2.Sxc3#
      • 2.dxc3#
    • 1...fxe3
      • 2.Sxe3#
      • 2.dxe3#
    • 1...bxa4
      • 2.c4#
    • 1...fxg4
      • 2.e4#
    • 1...a5
      • 2.Sb6#
    • 1...a6
      • 2.Sb6#
    • 1...g5
      • 2.Sf6#
    • 1...g6
      • 2.Sf6#
  • Keys
    • 1.d3!
      • 1...bxc3
        • 2.Sxc3#
      • 1...fxe3
        • 2.Sxe3#
      • 1...bxa4
        • 2.c4#
      • 1...fxg4
        • 2.e4#
      • 1...c4
        • 2.dxc4#
      • 1...e4
        • 2.dxe4#
      • 1...a5
        • 2.Sb6#
      • 1...a6
        • 2.Sb6#
      • 1...g5
        • 2.Sf6#
      • 1...g6
        • 2.Sf6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • P(c);N_GUARD,XS(G)::P(D)
    • P(g);N_GUARD,XS(H)::P(E)
    • P(h);N_GUARD::S(G)
    • P(i);N_GUARD::S(H)
  • Actual
    • P(B);
    • Vars
      • P(a);XP(D)::S(G),XP(a)
      • P(b);XP(E)::S(H),XP(b)
      • P(c);N_GUARD,XS(G)::P(D)
      • P(g);N_GUARD,XS(H)::P(E)
      • P(d);OGATE::R(A)+P(B)DCHECK,XP(d)
      • P(f);OGATE::R(A)+P(B)DCHECK,XP(f)
      • P(h);N_GUARD::S(G)
      • P(i);N_GUARD::S(H)
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).