MESON Chess Problem Database

Problem Display
PID: 175191 (8/8/4p3/R7/3kr3/2ppN1n1/1N4K1/2Q5 w - - 0 1)

Cogswell, William C

Boston Sunday Post, 1902

8/8/4p3/R7/3kr3/2ppN1n1/1N4K1/2Q5

#2

5 + 6

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...cxb2
      • 2.Qc5#
    • 1...d2
      • 2.Sc2#
    • 1...e5
      • 2.Rd5#
  • Keys
    • 1.Qc2!
      • threat
        • 2.Qxd3#
      • 1...Kxe3
        • 2.Qf2#
      • 1...Rxe3
        • 2.Qa4#
      • 1...cxb2
        • 2.Qc5#
      • 1...dxc2
        • 2.Sxc2#
      • 1...d2
        • 2.Qd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • P(a);OGATE,XS(B)::QAB1(A)
    • P(b);N_GUARD::S(D)
    • P(f);N_GUARD::R1(E)
  • Actual
    • Q(A);
    • Threat
      • QAR1(A),XP(b)
    • Vars
      • K(d);OGATEB,S_FLIGHT,XS(D)::QAB1(A)
      • R(e);SBLOCK,XS(D)::QAR(A)
      • P(a);OGATE,XS(B)::QAB1(A)
      • P(b);XQ(A)::S(D),XP(b)
      • P(b);::QAR1(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).