MESON Chess Problem Database

Problem Display
PID: 106066 (b2N4/8/1Q1Pqp2/4kB2/4Pn2/2n5/5P2/2B4K w - - 0 1)

Dikusarov, Andrey Nikolayovich

Telescacco 92, 1999

b2N4/8/1Q1Pqp2/4kB2/4Pn2/2n5/5P2/2B4K

#2

8 + 6

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qf7
      • 2.Sxf7#
    • 1...Qc8
      • 2.Sf7#
    • 1...Qxd6
      • 2.Sf7#
  • Keys
    • 1.Qc5+!
      • 1...Qd5
        • 2.Sf7#
      • 1...Bd5
        • 2.Sc6#
      • 1...Scd5
        • 2.Bb2#
      • 1...Sfd5
        • 2.f4#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 3
  • Sets
    • Q(d);N_GUARD::S(H),XQ(d)
    • Q(d);N_GUARD::S(H)
    • Q(d);N_GUARD,XP(G)::S(H)
  • Actual
    • Q(F);CHECK
    • Vars
      • Q(d);P_SPINQ(d)::S(H)
      • B(f);P_SPINB(f)::S(H)
      • S(a);N_PINP(D),P_SPINS(a),S_CUTB(f),S_CUTQ(d),S_CUTS(b)::B(A)
      • S(b);N_PINP(D),OGATE,P_SPINS(b)::P(C)
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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).