MESON Chess Problem Database

Problem Display
PID: 109438 (8/4K3/4n3/2N1k1n1/3pp1P1/2Np4/1P3P2/1Q6 w - - 0 1)

Strebkovs, Andrejs

Umenie 64, 2003

8/4K3/4n3/2N1k1n1/3pp1P1/2Np4/1P3P2/1Q6

#2

7 + 6

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Sf4
      • 2.Sd7#
    • 1...e3
      • 2.Sxd3#
  • Tries
    • 1.f4+?
      • 1...Sxf4
        • 2.Sd7#
      • 1...exf4 ep
        • 2.Sxd3#
      • 1...Kxf4!
  • Keys
    • 1.Qxd3!
      • 1...Kf4
        • 2.Qg3#
      • 1...Sxc5
        • 2.Qg3#
      • 1...dxc3
        • 2.Qd6#
      • 1...exd3
        • 2.Sxd3#
      • 1...Sf3
        • 2.Qxe4#
      • 1...Sh3
        • 2.Qxe4#
      • 1...Sf7
        • 2.Qxe4#
      • 1...Sh7
        • 2.Qxe4#
      • 1...Sf4
        • 2.Sd7#
      • 1...Sc7
        • 2.Qg3#
      • 1...Sg7
        • 2.Qg3#
      • 1...Sd8
        • 2.Qg3#
      • 1...Sf8
        • 2.Qg3#
      • 1...e3
        • 2.Qf5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 12
    • REMOVED MATES = 0
  • Sets
    • S(f);SBLOCK::S(F)
    • P(c);N_GUARD::S(F),XP(a)
  • Tries
    • Try
      • P(C);CHECK
      • Vars
        • S(f);SBLOCK,XP(C)::S(F)
        • P(c);EP,XP(C)::S(F),XP(a)
      • Refutation
        • K(d);S_FLIGHT,XP(C)
  • Actual
    • Q(A);XP(a)
    • Vars
      • K(d);S_FLIGHT::QAB1(A)
      • S(f);N_GUARD,XS(F)::QAB(A)
      • P(b);OGATE,XS(D)::QAB1(A)
      • P(c);XQ(A)::S(F),XP(c)
      • S(e);N_GUARD::QAR1(A),XP(c)
      • S(f);SBLOCK::S(F)
      • S(f);N_GUARD::QAB(A)
      • P(c);OGATE::QAR1(A)
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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).