MESON Chess Problem Database

Problem Display
PID: 206939 (b7/4p1q1/3N4/2P1kPp1/4B3/1NP3P1/3K4/Q2n4 w - - 0 1)

Juvenis

New York Clipper, 1857

b7/4p1q1/3N4/2P1kPp1/4B3/1NP3P1/3K4/Q2n4

#2

9 + 6

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Sf2
      • 2.c4#
    • 1...Sxc3
      • 2.Qxc3#
    • 1...Se3
      • 2.c4#
  • Keys
    • 1.c4+!
      • 1...Sb2
        • 2.Qxb2#
      • 1...Sc3
        • 2.Qxc3#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 2
  • Sets
    • S(a);N_GUARD::QAB(A)+P(D)
    • S(a);OGATE,P_SPINS(a),XP(D)::QAB(A),XS(a)
  • Actual
    • P(D);CHECK
    • Vars
      • S(a);N_GUARD,P_SPINS(a)::QAB(A),XS(a)
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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).