MESON Chess Problem Database

Problem Display
PID: 66840 (1K6/1R5b/2Q3B1/7r/7r/pNB3p1/P1q4R/1kN5 w - - 0 1)

Grasemann, Herbert

Chess, 1947

1K6/1R5b/2Q3B1/7r/7r/pNB3p1/P1q4R/1kN5

#2

9 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Bg8
      • 2.Bxc2#
  • Keys
    • 1.Qh1!
      • threat
        • 2.Sd2#
      • 1...Qxg6
        • 2.Sd3#
      • 1...Qd3
        • 2.Sxd3#
      • 1...Qe4
        • 2.Sc5#
      • 1...Qf5
        • 2.Sd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • B(g);N_GUARD::B(G),XQ(b)
  • Actual
    • Q(F);
    • Threat
      • R(H)+S(D),DCHECK
    • Vars
      • Q(b);N_GUARD,N_SPINQ(b),XB(G)::QAR(F)+S(A)
      • Q(b);N_GUARD::QAR(F)+S(A),XQ(b)
      • Q(b);S_CUTR(e)::R(H)+S(D)
      • Q(b);S_CUTR(f)::R(H)+S(D)
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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).