MESON Chess Problem Database

Problem Display
PID: 108020 (Br6/6B1/2R5/1P1k2N1/r1N3K1/p2p2n1/4p3/4n3 w - - 0 1)

Eddis, EHE

Toronto Week, 1885

Br6/6B1/2R5/1P1k2N1/r1N3K1/p2p2n1/4p3/4n3

#2

7 + 8

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Ra5
      • 2.Se3#
    • 1...Ra6
      • 2.Se3#
    • 1...Ra7
      • 2.Se3#
    • 1...Raxa8
      • 2.Se3#
    • 1...Se4
      • 2.Se3#
  • Keys
    • 1.Se4!
      • threat
        • 2.Sc3#
      • 1...Kxe4
        • 2.Re6#
      • 1...Rxc4
        • 2.Rd6#
      • 1...Sxe4
        • 2.Se3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 4
  • Sets
    • R(f);N_PINS(A)::S(A)
    • R(f);N_PINS(A),XB(G)::S(A)
    • S(e);N_PINS(A)::S(A)
  • Actual
    • S(D);N_SPINS(A)
    • Threat
      • S(D)
    • Vars
      • K(g);S_FLIGHT,XS(D)::B(G)+R(E),DCHECK
      • R(f);P_PINS(D),SBLOCK,XS(A)::B(G)+R(E),DCHECK
      • S(e);SBLOCK,XS(D)::S(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).