MESON Chess Problem Database

Problem Display
PID: 182830 (5Q1K/3pp3/4p3/NpnpkN2/1B6/1nr1p1P1/1PP5/7B w - - 0 1)

Masek, Zdenek

Comm., Belliboni-Faria Festival, 1989

5Q1K/3pp3/4p3/NpnpkN2/1B6/1nr1p1P1/1PP5/7B

#2

9 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...d6
      • 2.Sc6#
  • Tries
    • 1.Sh4?
      • threat
        • 2.Qf4#
      • 1...Kd4
        • 2.Bxc3#
      • 1...Kd6
        • 2.Qb8#
      • 1...Sd3
        • 2.Qg7#
      • 1...Se4
        • 2.Sf3#
      • 1...Rc4!
    • 1.Bxc3+?
      • 1...Sd4
        • 2.Bxd4#
      • 1...d4!
  • Keys
    • 1.Sd4!
      • threat
        • 2.Qf4#
      • 1...Kxd4
        • 2.Bxc3#
      • 1...Kd6
        • 2.Qb8#
      • 1...Sd3
        • 2.Qg7#
      • 1...Se4
        • 2.Sf3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • P(i);N_GUARD::S(F)
  • Tries
    • Try
      • S(G);
      • Threat
        • QAB1(H)
      • Vars
        • K(g);S_FLIGHT::B(E),XR(b)
        • K(g);P_SPINP(j),P_SPINS(e),S_FLIGHT::QAB(H)
        • S(e);::QAB(H)
        • S(e);SBLOCK::S(G)
      • Refutation
        • R(b);
    • Try
      • B(E);CHECK,XR(b)
      • Vars
        • S(a);N_GUARD,P_SPINS(a)::B(E),XS(a)
      • Refutation
        • P(f);P_SPINP(f)
  • Actual
    • S(G);
    • Threat
      • QAB1(H)
    • Vars
      • K(g);OGATEB,S_FLIGHT,XS(G)::B(E),XR(b)
      • K(g);P_SPINP(j),P_SPINS(e),S_FLIGHT::QAB(H)
      • S(e);::QAB(H)
      • S(e);SBLOCK::S(G)
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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).