MESON Chess Problem Database

Problem Display
PID: 231312 (r2R2Bk/P5p1/8/8/8/8/Q4nP1/K7 w - - 0 1)

Hartong, Jan

Das Ratsel, 1927

r2R2Bk/P5p1/8/8/8/8/Q4nP1/K7

#2

6 + 4

6490 yacpdb 2021

SOLUTION

  • SOUND
  • Sets
    • 1...g5
      • 2.Qb2#
    • 1...g6
      • 2.Qb2#
  • Keys
    • 1.Qb1!
      • threat
        • 2.Qh7#
      • 1...Rxa7+
        • 2.Ba2#
      • 1...g6
        • 2.Qb2#
      • 1...Sd3
        • 2.Qh1#
      • 1...Se4
        • 2.Qh1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • P(b);OGATEB::QAB(B)
  • Actual
    • Q(B);P_SPINP(D)
    • Threat
      • QAR1(B)
    • Vars
      • R(c);CHECK,N_GUARD,XP(D)::R(E)+B(F)
      • P(b);OGATEB::QAB(B)
      • S(a);N_GUARD::QAB(B)
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).