MESON Chess Problem Database

Problem Display
PID: 108305 (6q1/1N1p4/2k2N2/B1P5/2Q5/7B/8/K4b2 w - - 0 1)

Fortier, G Laurent

Ottawa Citizen, 1888

6q1/1N1p4/2k2N2/B1P5/2Q5/7B/8/K4b2

#2

7 + 4

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qd5
      • 2.Sd8#
    • 1...Qe6
      • 2.Sd8#
    • 1...Qf7
      • 2.Sd8#
    • 1...Qh7
      • 2.Sd8#
    • 1...Qg1
      • 2.Sd8#
    • 1...Qg2
      • 2.Sd8#
    • 1...Qg3
      • 2.Sd8#
    • 1...Qg4
      • 2.Sd8#
    • 1...Qg5
      • 2.Sd8#
    • 1...Qg6
      • 2.Sd8#
    • 1...Qg7
      • 2.Sd8#
    • 1...Qd8
      • 2.Sxd8#
    • 1...Bg2
      • 2.Qa6#
    • 1...Bxh3
      • 2.Qa6#
  • Keys
    • 1.Bg2+!
      • 1...Qd5
        • 2.Sd8#
        • 2.Bxd5#
      • 1...Qxg2
        • 2.Sd8#
      • 1...Bxg2
        • 2.Qa6#
      • 1...d5
        • 2.cxd5 ep#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 12
  • Sets
    • Q(d);N_GUARD::S(G)
    • Q(d);N_GUARD,P_PINS(F)::S(G)
    • Q(d);N_GUARD::S(G),XQ(d)
    • B(a);N_GUARD::QAR2(C)
    • B(a);N_GUARD,XB(B)::QAR2(C)
  • Actual
    • B(B);CHECK
    • Vars
      • Q(d);XB(B)::S(G)
      • B(a);XB(B)::QAR2(C)
      • P(c);OGATE,P_SPINP(c)::QAR(C)+P(E)DCHECK,XP(c),EP
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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).