MESON Chess Problem Database

Problem Display
PID: 164459 (8/8/p2pp3/3PP1Q1/1PpkP1p1/2Np4/1K3P2/1B2N3 w - - 0 1)

Lukashev, Viktor Sergeevich

Sachmatija, 2007

8/8/p2pp3/3PP1Q1/1PpkP1p1/2Np4/1K3P2/1B2N3

#2

10 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...d2
      • 2.Se2#
    • 1...g3
      • 2.Sf3#
    • 1...dxe5
      • 2.Qe3#
  • Tries
    • 1.Qg7?
      • 1...dxe5
        • 2.Qa7#
      • 1...exd5
        • 2.exd6#
        • 2.e6#
      • 1...d2
        • 2.Se2#
      • 1...g3
        • 2.Sf3#
      • 1...a5!
    • 1.exd6?
      • 1...exd5
        • 2.Qf6#
        • 2.Qxd5#
        • 2.Qg7#
      • 1...d2
        • 2.Se2#
      • 1...g3
        • 2.Sf3#
      • 1...e5
        • 2.Qe3#
      • 1...a5!
  • Keys
    • 1.Qf4!
      • 1...dxe5
        • 2.Qe3#
      • 1...exd5
        • 2.exd5#
      • 1...d2
        • 2.Se2#
      • 1...g3
        • 2.Sf3#
      • 1...a5
        • 2.Sb5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • P(a);N_GUARD::S(E)
    • P(d);N_GUARD::S(B)
    • P(f);SBLOCK,XP(I)::QAB1(J)
  • Tries
    • Try
      • Q(J);
      • Vars
        • P(f);P_SPINP(f),SBLOCK,XP(I)::QAB(J)
        • P(a);N_GUARD::S(E)
        • P(d);N_GUARD::S(B)
      • Refutation
        • P(e);
    • Try
      • P(I);XP(f)
      • Vars
        • P(a);N_GUARD::S(E)
        • P(d);N_GUARD::S(B)
        • P(g);SBLOCK::QAB1(J)
      • Refutation
        • P(e);
  • Actual
    • Q(J);
    • Vars
      • P(f);SBLOCK,XP(I)::QAB1(J)
      • P(g);OGATE,XP(H)::QAR(J)+P(G),XP(g)
      • P(a);N_GUARD::S(E)
      • P(d);N_GUARD::S(B)
      • P(e);N_GUARD::S(E)
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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).