MESON Chess Problem Database

Problem Display
PID: 108797 (6b1/2K4n/3pp3/2Bk2p1/R1n1r1N1/1p1N1Q2/8/4r3 w - - 0 1)

Larsson, Lennart

Thema Danicum, 1985

6b1/2K4n/3pp3/2Bk2p1/R1n1r1N1/1p1N1Q2/8/4r3

#2

6 + 10

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Sb2
      • 2.Rd4#
    • 1...Sd2
      • 2.Rd4#
    • 1...Sa3
      • 2.Rd4#
    • 1...Se3
      • 2.Rd4#
      • 2.Qxe4#
    • 1...Sa5
      • 2.Rd4#
    • 1...Se5
      • 2.Rd4#
    • 1...Sb6
      • 2.Rd4#
    • 1...Sf6
      • 2.Sxf6#
    • 1...Sf8
      • 2.Sf6#
  • Tries
    • 1.Se3+?
      • 1...Sxe3
        • 2.Rd4#
        • 2.Qxe4#
      • 1...Rxe3!
  • Keys
    • 1.Qf8!
      • threat
        • 2.Qa8#
      • 1...Sxf8
        • 2.Sf6#
      • 1...dxc5
        • 2.Qxc5#
      • 1...e5
        • 2.Qxg8#
      • 1...Sa5
        • 2.Qxd6#
      • 1...Se5
        • 2.Qxd6#
      • 1...Sb6
        • 2.Qxd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 3
    • ADDED MATES = 2
    • REMOVED MATES = 4
  • Sets
    • S(c);OGATE::R1(C)
    • S(i);N_GUARD::S(D),XS(i)
    • S(i);N_GUARD::S(D)
  • Tries
    • Try
      • S(D);CHECK
      • Refutation
        • R(a);XS(D)
  • Actual
    • Q(B);N_PINR(d)
    • Threat
      • QAB(B)
    • Vars
      • S(i);N_GUARD,XQ(B)::S(D)
      • P(g);OGATE,XB(E)::QAR1(B),XP(g)
      • P(h);OGATEB::QAB(B),XB(j)
      • S(c);N_GUARD::QAR1(B),XP(g)
HTML5 logo

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).