MESON Chess Problem Database

Problem Display
PID: 249300 (bb6/2p1n3/1r3N2/p4p1Q/1k2NR2/pPR5/3P3K/2r2B2 w - - 0 1)

Ugren, Ljubomir

The Problemist, 1990

bb6/2p1n3/1r3N2/p4p1Q/1k2NR2/pPR5/3P3K/2r2B2

#2

9 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Rc6
      • 2.Sc5#
    • 1...Rb7
      • 2.Sf2#
      • 2.Sg3#
      • 2.Sc5#
      • 2.Sg5#
      • 2.Sd6#
    • 1...Sc6
      • 2.Sd5#
    • 1...fxe4
      • 2.Qc5#
    • 1...c6
      • 2.Sd6#
  • Keys
    • 1.Qe8!
      • threat
        • 2.Qa4#
      • 1...a4
        • 2.Qxa4#
      • 1...Rb5
        • 2.Qxb5#
      • 1...Rc6
        • 2.Sc5#
      • 1...Bc6
        • 2.Qxe7#
      • 1...Sc6
        • 2.Sd5#
      • 1...c6
        • 2.Sd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • R(f);S_CUTB(i)::R(G)+S(F)
    • S(h);N_GUARD,S_CUTB(i)::S(I)
    • P(e);OGATE,P_SPINP(e),XS(F)::QAB1(H)
    • P(g);P_PINR(G),S_CUTB(i)::R(G)+S(F)
  • Actual
    • Q(H);
    • Threat
      • QAR1(H)
    • Vars
      • P(d);::QAR1(H),XP(d)
      • R(f);N_GUARD::QAR1(H),XR(f)
      • R(f);S_CUTB(i)::R(G)+S(F)
      • B(i);S_CUTP(g),S_CUTR(f)::QAB(H),XS(h)
      • S(h);N_GUARD,S_CUTB(i)::S(I)
      • P(g);P_PINR(G),S_CUTB(i)::R(G)+S(F)
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).