MESON Chess Problem Database

Problem Display
PID: 135951 (QB4Bn/8/8/2PP2NR/1n1kNp2/5R2/3P4/6K1 w - - 0 1)

Einat, Paz

Kazimov, Islam

Mat Plus, 2009

QB4Bn/8/8/2PP2NR/1n1kNp2/5R2/3P4/6K1

#2

11 + 4

SOLUTION

  • SOUND
  • Sets
    • 1...Sxd5
      • 2.Qxd5#
  • Tries
    • 1.Se6+?
      • 1...Kc4
        • 2.Sd6#
      • 1...Kxe4!
    • 1.d3?
      • threat
        • 2.Se6#
        • 2.Qa1#
      • 1...Sxd5
        • 2.Se6#
        • 2.Qxd5#
      • 1...Sa2
        • 2.Se6#
      • 1...Sc2
        • 2.Se6#
      • 1...Sa6
        • 2.Se6#
      • 1...Sf7
        • 2.Se6#
      • 1...Sxd3!
    • 1.d6?
      • threat
        • 2.Qa1#
      • 1...Ke5
        • 2.Se6#
      • 1...Sd5
        • 2.Qxd5#
      • 1...Sa2
        • 2.Qd5#
      • 1...Sc2
        • 2.Qd5#
      • 1...Sd3
        • 2.Qd5#
      • 1...Sa6
        • 2.Qd5#
      • 1...Sf7!
  • Keys
    • 1.Sd6!
      • threat
        • 2.Se6#
      • 1...Kxc5
        • 2.Qa7#
      • 1...Ke5
        • 2.Qa1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • S(a);OGATE,XP(F)::QAR1(I),XS(a)
  • Tries
    • Try
      • S(G);CHECK
      • Vars
        • K(b);P-FLIGHT::S(D)
      • Refutation
        • K(b);P-FLIGHT,XS(D)
    • Try
      • P(B);
      • Threat
        • DUALS(2)
      • Vars
        • S(a);::S(G)
        • S(d);::S(G)
      • Refutation
        • S(a);XP(B)
    • Try
      • P(F);
      • Threat
        • QAB(I)
      • Vars
        • K(b);S_FLIGHT::R(H)+S(G)
        • S(a);N_GUARD::QAR1(I),XS(a)
        • S(a);N_GUARD::QAR1(I)
      • Refutation
        • S(d);
  • Actual
    • S(D);
    • Threat
      • S(G)
    • Vars
      • K(b);OGATEB,S_FLIGHT,XP(E)::QAB(I)
      • K(b);S_FLIGHT::QAB(I)
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).