MESON Chess Problem Database

Problem Display
PID: 266221 (K1B3N1/b1R1p1B1/3p2nr/3k4/1p2N2Q/1bpn4/8/4q3 w - - 0 1)

Roosendaal, Jan C

Schakend Nederland, 1978

K1B3N1/b1R1p1B1/3p2nr/3k4/1p2N2Q/1bpn4/8/4q3

#2

7 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Sf8
      • 2.Sxe7#
    • 1...Sh8
      • 2.Sxe7#
    • 1...e5
      • 2.Sef6#
    • 1...e6
      • 2.Bb7#
  • Keys
    • 1.Sg5!
      • threat
        • 2.Bb7#
      • 1...Ba4
        • 2.Qc4#
      • 1...Sc5
        • 2.Qd4#
      • 1...Sde5
        • 2.Be6#
      • 1...Sge5
        • 2.Sxe7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 4
  • Sets
    • S(h);N_GUARD::S(G),XP(k)
    • P(k);N_GUARD,SBLOCK::S(A)
    • P(k);SBLOCK::B(F)
  • Actual
    • S(A);
    • Threat
      • B(F)
    • Vars
      • B(b);N_GUARD::QAB1(B)
      • S(d);S_CUTB(j)::QAR1(B)
      • S(d);S_CUTQ(a)::B(F)
      • S(h);N_GUARD,S_CUTQ(a)::S(G),XP(k)
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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).