MESON Chess Problem Database

Problem Display
PID: 263806 (8/p1Npq3/Q3b2N/2P1p3/1b2k1p1/1P2B3/3P2K1/8 w - - 0 1)

Okkinga, AS

2nd HM., Tijdschrift vd NSB, 1894

8/p1Npq3/Q3b2N/2P1p3/1b2k1p1/1P2B3/3P2K1/8

#2

8 + 8

6490 yacpdb 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Bxb3
      • 2.Qg6#
    • 1...Bc4
      • 2.Qxc4#
      • 2.Qg6#
    • 1...Bd5
      • 2.Qg6#
    • 1...Bf5
      • 2.Qc4#
    • 1...Bg8
      • 2.Qg6#
  • Keys
    • 1.Sd5!
      • threat
        • 2.Qc4#
      • 1...Kxd5
        • 2.Qb7#
      • 1...Qxc5
        • 2.Sf6#
      • 1...Bxc5
        • 2.Sc3#
      • 1...Bxd5
        • 2.Qg6#
      • 1...Bc3
        • 2.Sxc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 3
  • Sets
    • B(e);OGATE,XP(C)::QAB(F)
    • B(e);OGATE::QAB(F)
    • B(e);N_GUARD::QAR2(F)
  • Actual
    • S(H);
    • Threat
      • QAR2(F)
    • Vars
      • K(b);OGATEB,S_FLIGHT,XS(H)::QAB(F)
      • Q(h);N_GUARD,XP(E)::S(H)
      • B(a);N_GUARD,XP(E)::S(H)
      • B(e);OGATE,SBLOCK,XS(H)::QAB(F)
      • B(a);N_GUARD::S(H),XB(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).