MESON Chess Problem Database

Problem Display
PID: 158072 (5b1Q/3n1Np1/8/5n2/4kp2/8/K4PP1/3R1B2 w - - 0 1)

Lukashev, Viktor Sergeevich

Best Problems, 2009

5b1Q/3n1Np1/8/5n2/4kp2/8/K4PP1/3R1B2

#2

7 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Ba3
      • 2.Qa8#
    • 1...Bb4
      • 2.Qa8#
    • 1...Bc5
      • 2.Qa8#
    • 1...Bd6
      • 2.Qa8#
    • 1...Be7
      • 2.Qa8#
    • 1...Se5
      • 2.Sg5#
    • 1...g5
      • 2.Sxg5#
    • 1...g6
      • 2.Sg5#
  • Keys
    • 1.Qh5!
      • threat
        • 2.Qf3#
      • 1...f3
        • 2.Qxf3#
        • 2.Qg4#
      • 1...Se3
        • 2.f3#
      • 1...Sg3
        • 2.Qd5#
      • 1...Sd4
        • 2.Bd3#
      • 1...Sh4
        • 2.Qd5#
      • 1...Sd6
        • 2.Qd5#
      • 1...Sh6
        • 2.Qd5#
      • 1...Se7
        • 2.Sd6#
      • 1...Se5
        • 2.Sg5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 7
  • Sets
    • B(f);OGATE::QAB(G)
    • S(d);SBLOCK::S(F)
    • P(e);::S(F),XP(e)
    • P(e);::S(F)
  • Actual
    • Q(G);
    • Threat
      • QAB1(G)
    • Vars
      • S(c);SBLOCK::P(D)
      • S(c);OGATE::QAB1(G)
      • S(c);SBLOCK::B(B)
      • S(c);N_GUARD,S_CUTB(f)::S(F)
      • S(d);SBLOCK::S(F)
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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).