MESON Chess Problem Database

Problem Display
PID: 249837 (kb4rR/Bp1n2Q1/2N5/1P1B1r2/2N2p2/8/8/5K2 w - - 0 1)

Dikusarov, Andrey Nikolayovich

Uralski Problemist, 2008

kb4rR/Bp1n2Q1/2N5/1P1B1r2/2N2p2/8/8/5K2

#2

8 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Sc5
      • 2.Sb6#
    • 1...Se5
      • 2.Sb6#
    • 1...Sb6
      • 2.Sxb6#
    • 1...Sf6
      • 2.Sb6#
    • 1...Sf8
      • 2.Sb6#
  • Keys
    • 1.Qa1!
      • threat
        • 2.Bxb8#
      • 1...Rg1+
        • 2.Bxg1#
      • 1...Bxa7
        • 2.Qxa7#
      • 1...bxc6
        • 2.Bxc6#
      • 1...b6
        • 2.S6e5#
      • 1...Rg2
        • 2.Bf2#
      • 1...Rg3
        • 2.Be3#
      • 1...Be5
        • 2.Bd4#
      • 1...Bd6
        • 2.Bc5#
      • 1...Bc7
        • 2.Bb6#
      • 1...Sc5
        • 2.Sb6#
      • 1...Sb6
        • 2.Sxb6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 9
    • REMOVED MATES = 3
  • Sets
    • S(d);N_GUARD::S(B)
    • S(d);N_GUARD::S(B),XS(d)
  • Actual
    • Q(G);
    • Threat
      • QAR(G)+B(F),XB(f)
    • Vars
      • R(g);CHECK,P_SPINB(f)::QAR(G)+B(F),XR(g)
      • B(f);OGATE,P_SPINB(f),P_SPINR(g),XB(F)::QAR1(G),XB(f)
      • P(c);OGATE,P_SPINP(c),XS(E)::B(D),XP(c)
      • P(c);::B(D)+S(E)
      • R(g);P_SPINB(f)::QAR(G)+B(F)
      • B(f);N_GUARD,P_SPINR(g)::QAR(G)+B(F)
      • S(d);N_GUARD::S(B)
      • S(d);N_GUARD::S(B),XS(d)
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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).