MESON Chess Problem Database

Problem Display
PID: 224449 (3Q4/1p1P4/4N1R1/4b2p/1RBnk3/8/8/1K4B1 w - - 0 1)

Gibson, John

York Daily (York, Pennsylvania), 1887

3Q4/1p1P4/4N1R1/4b2p/1RBnk3/8/8/1K4B1

#2

8 + 5

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Kf5
      • 2.Bd3#
  • Keys
    • 1.Qh4+!
      • 1...Kf3
        • 2.Qh1#
      • 1...Kf5
        • 2.Bd3#
      • 1...Bf4
        • 2.Qxf4#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(b);S_FLIGHT::B(D)
  • Actual
    • Q(H);CHECK
    • Vars
      • K(b);S_FLIGHT::QAB(H)
      • K(b);S_FLIGHT::B(D)
      • B(c);N_GUARD,P_SPINB(c)::QAR1(H),XB(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).