MESON Chess Problem Database

Problem Display
PID: 195916 (8/5p1r/1QpN4/4kBB1/1P2P3/Kn4N1/4b3/3n4 w - - 0 1)

Jordan, Gijsbertus

Haagsche Post TT, 1921

8/5p1r/1QpN4/4kBB1/1P2P3/Kn4N1/4b3/3n4

#2

8 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Kxd6
      • 2.Qb8#
    • 1...Rh1
      • 2.Sxf7#
    • 1...Rh2
      • 2.Sxf7#
    • 1...Rh3
      • 2.Sxf7#
    • 1...Rh4
      • 2.Sxf7#
    • 1...Rh5
      • 2.Sxf7#
    • 1...Rh6
      • 2.Sxf7#
    • 1...Rh8
      • 2.Sxf7#
    • 1...Bf3
      • 2.Sc4#
    • 1...Bc4
      • 2.Sxc4#
    • 1...Bg4
      • 2.Sc4#
    • 1...Bh5
      • 2.Sc4#
    • 1...Sa1
      • 2.Qc5#
    • 1...Sc1
      • 2.Qc5#
    • 1...Sd2
      • 2.Qc5#
    • 1...Sd4
      • 2.Qc5#
    • 1...Sa5
      • 2.Qc5#
    • 1...Sc5
      • 2.Qxc5#
  • Tries
    • 1.Qd8?
      • threat
        • 2.Qf6#
      • 1...Rh6
        • 2.Sxf7#
      • 1...f6
        • 2.Qxf6#
      • 1...Kd4!
  • Keys
    • 1.Sh5!
      • threat
        • 2.Bf4#
      • 1...Kxd6
        • 2.Qb8#
      • 1...Rxh5
        • 2.Sxf7#
      • 1...Bxh5
        • 2.Sc4#
      • 1...Sc5
        • 2.Qxc5#
      • 1...c5
        • 2.Bf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 14
  • Sets
    • K(d);OGATEB,P_SPINP(e),S_FLIGHT,XS(H)::QAB(G)
    • R(g);N_GUARD::S(H),XP(f)
    • B(b);N_GUARD::S(H)
    • B(b);N_GUARD::S(H),XB(b)
    • S(c);N_GUARD::QAR2(G)
    • S(c);N_GUARD::QAR2(G),XS(c)
  • Tries
    • Try
      • Q(G);
      • Threat
        • QAB1(G)
      • Vars
        • R(g);N_GUARD::S(H),XP(f)
        • P(f);::QAB1(G),XP(f)
      • Refutation
        • K(d);S_FLIGHT
  • Actual
    • S(B);
    • Threat
      • B(F)
    • Vars
      • K(d);OGATEB,P_SPINP(e),S_FLIGHT,XS(H)::QAB(G)
      • R(g);N_GUARD,XS(B)::S(H),XP(f)
      • B(b);N_GUARD,XS(B)::S(H)
      • S(c);N_GUARD::QAR2(G),XS(c)
      • P(e);::B(F)
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).