MESON Chess Problem Database

Problem Display
PID: 54719 (b7/B7/5Qr1/6RB/3N1p2/5n2/R7/3K1k2 w - - 0 1)

Hannelius, Jan Ingvar

Keskisuomalainen, 1966

b7/B7/5Qr1/6RB/3N1p2/5n2/R7/3K1k2

#2

7 + 5

56 The Problemist 2003

SOLUTION

  • SOUND
  • Sets
    • 1...Rg7
      • 2.Qa6#
    • 1...Rg8
      • 2.Qa6#
  • Tries
    • 1.Sxf3?
      • threat
        • 2.Sd2#
        • 2.Sh2#
        • 2.Rf2#
      • 1...Rxg5
        • 2.Sh2#
        • 2.Rf2#
      • 1...Bxf3+!
  • Keys
    • 1.Sf5!
      • threat
        • 2.Rf2#
      • 1...Rxg5
        • 2.Qa6#
      • 1...Sxg5
        • 2.Sg3#
      • 1...Sd2
        • 2.Be2#
      • 1...Sd4
        • 2.Se3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 2
  • Sets
    • R(d);N_GUARD::QAB(F)
  • Tries
    • Try
      • S(C);XS(b)
      • Threat
        • DUALS(3)
      • Refutation
        • B(e);CHECK,XS(C)
  • Actual
    • S(C);
    • Threat
      • R1(B)
    • Vars
      • R(d);N_GUARD,XR(D)::QAB(F)
      • S(b);S_CUTP(c),XR(D)::S(C)
      • S(b);OGATE::B(E)
      • S(b);S_CUTP(c)::S(C)
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).