MESON Chess Problem Database

Problem Display
PID: 52003 (K1R5/3n4/pp2N2R/1p1k1nNQ/1P6/2P3Bp/3P1Pb1/7q w - - 0 1)

Chepizhni, Viktor Ivanovich

1st Comm., Ahues-80 JT, 2003

K1R5/3n4/pp2N2R/1p1k1nNQ/1P6/2P3Bp/3P1Pb1/7q

#2

11 + 9

23 Die Schwalbe 2004

SOLUTION

  • SOUND
  • Sets
    • 1...Se5
      • 2.Sf4#
  • Tries
    • 1.Qg4?
      • threat
        • 2.Sc7#
      • 1...Sxg3
        • 2.Qd4#
      • 1...Sxh6
        • 2.Qd4#
      • 1...Sd4
        • 2.Qxd4#
      • 1...Sd6
        • 2.Qd4#
      • 1...Sf6
        • 2.Qxf5#
      • 1...Be4!
    • 1.Qe8?
      • threat
        • 2.Sf4#
      • 1...Sxh6
        • 2.Qxd7#
      • 1...Se7
        • 2.Qxd7#
      • 1...Sf6
        • 2.Qc6#
      • 1...Sc5!
  • Keys
    • 1.Qe2!
      • threat
        • 2.Sf4#
        • 2.Sc7#
      • 1...Sxh6
        • 2.Qd3#
      • 1...Be4
        • 2.Sc7#
      • 1...Se3
        • 2.Sc7#
        • 2.Qd3#
      • 1...Sd6
        • 2.Sf4#
        • 2.Qd3#
      • 1...Sf6
        • 2.Qe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • S(i);SBLOCK::S(H)
  • Tries
    • Try
      • Q(G);
      • Threat
        • S(H)
      • Vars
        • S(f);N_GUARD,XB(D)::QAR1(G)
        • S(f);N_GUARD,XR(I)::QAR1(G)
        • S(f);N_GUARD::QAR1(G),XS(f)
        • S(f);N_GUARD::QAR1(G)
        • S(i);N_GUARD::QAR2(G),XS(f)
      • Refutation
        • B(b);
    • Try
      • Q(G);
      • Threat
        • S(H)
      • Vars
        • S(f);N_GUARD,XR(I)::QAR2(G),XS(i)
        • S(f);N_GUARD::QAR2(G),XS(i)
        • S(i);OGATE::QAB1(G)
      • Refutation
        • S(i);
  • Actual
    • Q(G);
    • Threat
      • DUALS(2)
    • Vars
      • S(f);N_GUARD,XR(I)::QAR2(G)
      • B(b);::S(H)
      • S(i);N_GUARD::QAR1(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).