MESON Chess Problem Database

Problem Display
PID: 43873 (7b/3p1p2/3PkrQq/r1p3p1/4B1P1/p4N2/6nB/2K5 w - - 0 1)

Gotfryd, J

De Problemist, 1930

7b/3p1p2/3PkrQq/r1p3p1/4B1P1/p4N2/6nB/2K5

#2

7 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Qg7
      • 2.Sxg5#
    • 1...Qf8
      • 2.Sxg5#
    • 1...Qh3
      • 2.Sxg5#
    • 1...Qh7
      • 2.Sxg5#
    • 1...c4
      • 2.Sd4#
  • Keys
    • 1.Qxg5!
      • threat
        • 2.Bd5#
      • 1...Qxg5+
        • 2.Sxg5#
      • 1...Qxh2
        • 2.Qd5#
      • 1...Rf4
        • 2.Qe7#
      • 1...Sf4
        • 2.Qe5#
      • 1...Rf5
        • 2.gxf5#
      • 1...Se3
        • 2.Qe5#
      • 1...c4
        • 2.Sd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 4
  • Sets
    • Q(h);N_GUARD::S(C),XP(e)
    • P(d);N_GUARD::S(C)
  • Actual
    • Q(G);N_PINR(g),P_SPINQ(G),XP(e)
    • Threat
      • B(D)
    • Vars
      • Q(h);CHECK,XQ(G)::S(C),XQ(h)
      • Q(h);N_PINQ(G),XB(B)::QAB1(G)
      • R(g);N_PINQ(G)::QAR1(G)
      • S(a);N_PINQ(G)::QAR1(G)
      • R(g);OGATE::P(E),XR(g)
      • P(d);N_GUARD::S(C)
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).