MESON Chess Problem Database

Problem Display
PID: 243687 (2R3K1/1p2N3/3p1p1b/r3p3/2pkn3/R2N1Qp1/2q3r1/5B2 w - - 0 1)

Jonsson, Gustav

Tidskrift for Schack, 1981

2R3K1/1p2N3/3p1p1b/r3p3/2pkn3/R2N1Qp1/2q3r1/5B2

#2

7 + 12

SOLUTION

  • SOUND
  • Sets
    • 1...Rd5
      • 2.Sf5#
    • 1...Sd2
      • 2.Sf5#
    • 1...Sf2
      • 2.Sf5#
    • 1...Sc3
      • 2.Sf5#
    • 1...Sc5
      • 2.Sf5#
    • 1...Sg5
      • 2.Sf5#
    • 1...d5
      • 2.Sf5#
  • Keys
    • 1.Sb4!
      • threat
        • 2.Sf5#
      • 1...Sd2
        • 2.Sxc2#
      • 1...Sf2
        • 2.Sxc2#
      • 1...Sc3
        • 2.Rxc4#
      • 1...Sc5
        • 2.Qd5#
      • 1...Sg5
        • 2.Qe3#
      • 1...f5
        • 2.Sxf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 5
    • ADDED MATES = 1
    • REMOVED MATES = 2
  • Sets
    • R(g);SBLOCK::S(E)
    • S(f);::S(E)
    • P(i);SBLOCK::S(E)
  • Actual
    • S(C);
    • Threat
      • S(E)
    • Vars
      • S(f);S_CUTR(b)::S(C),XQ(a)
      • S(f);S_CUTQ(a)::R1(F),XP(d)
      • S(f);OGATE::QAR1(D)
      • S(f);S_CUTB(k)::QAB1(D)
      • P(j);::S(E),XP(j)
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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).