MESON Chess Problem Database

Problem Display
PID: 149193 (1bqr4/2pppPP1/8/1p6/3k1p1n/1KNNp3/4P3/6Q1 w - - 0 1)

Kohring, Rolf

Best Problems, 2010

1bqr4/2pppPP1/8/1p6/3k1p1n/1KNNp3/4P3/6Q1

#2

7 + 11

15148 Sadier Collection 2013

SOLUTION

  • SOUND
  • Sets
    • 1...f3
      • 2.Qg4#
  • Keys
    • 1.Qg5!
      • threat
        • 2.Qxf4#
        • 2.Qc5#
        • 2.Qd5#
        • 2.Qe5#
      • 1...Qb7
        • 2.Qc5#
        • 2.Qe5#
      • 1...Ba7
        • 2.Qxf4#
        • 2.Qd5#
        • 2.Qe5#
      • 1...Sg2
        • 2.Qc5#
        • 2.Qd5#
        • 2.Qe5#
      • 1...Sf3
        • 2.Qxf4#
        • 2.Qc5#
        • 2.Qd5#
      • 1...Sf5
        • 2.Qxf4#
      • 1...Sg6
        • 2.Qc5#
        • 2.Qd5#
      • 1...f3
        • 2.Qf4#
        • 2.Qxh4#
        • 2.Qg4#
        • 2.Qc5#
        • 2.Qd5#
        • 2.Qe5#
      • 1...c5
        • 2.Qd5#
      • 1...c6
        • 2.Qc5#
      • 1...d5
        • 2.Qxf4#
        • 2.Qe5#
      • 1...d6
        • 2.Qxf4#
        • 2.Qd5#
      • 1...e5
        • 2.Qxe5#
      • 1...e6
        • 2.Qxf4#
        • 2.Qc5#
        • 2.Qe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • P(c);OGATEB::QAR(A)
  • Actual
    • Q(A);N_PINP(a)
    • Threat
      • DUALS(4)
    • Vars
      • S(d);::QAR2(A),XP(c)
      • P(f);::QAR1(A)
      • P(f);::QAB1(A)
      • P(h);::QAB1(A),XP(h)
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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).