MESON Chess Problem Database

Problem Display
PID: 63980 (6b1/3p1Q2/2p5/1rk1K3/8/P1NP4/1Pq5/8 w - - 0 1)

Brown, ?

Source?, 0000

6b1/3p1Q2/2p5/1rk1K3/8/P1NP4/1Pq5/8

#2

6 + 6

16 Chess Amateur (The) 1910

SOLUTION

  • SOUND
  • Sets
    • 1...Qb1
      • 2.Sa4#
      • 2.Qf2#
    • 1...Qd1
      • 2.Qf2#
    • 1...Qb3
      • 2.Qf2#
    • 1...Qxd3
      • 2.Sa4#
    • 1...Qa4
      • 2.Sxa4#
    • 1...Qc1
      • 2.Sa4#
    • 1...Qd2
      • 2.Sa4#
    • 1...Qf2
      • 2.Sa4#
      • 2.Qxf2#
    • 1...Qg2
      • 2.Sa4#
    • 1...Rb6
      • 2.d4#
  • Keys
    • 1.Qf2+!
      • 1...Qxf2
        • 2.Sa4#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 8
  • Sets
    • Q(a);N_GUARD::QAB(F)
    • Q(a);N_GUARD,XP(D)::S(C)
    • Q(a);N_GUARD::S(C),XQ(a)
    • Q(a);N_GUARD::S(C)
    • R(b);SBLOCK::P(D)
  • Actual
    • Q(F);CHECK
    • Vars
      • Q(a);XQ(F)::S(C)
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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).