MESON Chess Problem Database

Problem Display
PID: 250713 (3B4/8/3pp2p/3PkP1p/1N2b2N/7P/1P2R1p1/K1Q5 w - - 0 1)

Ulanov, Leonid

Schweizerische Schachzeitung, 1998

3B4/8/3pp2p/3PkP1p/1N2b2N/7P/1P2R1p1/K1Q5

#2

10 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Kd4
      • 2.Qc3#
    • 1...exd5
      • 2.Sc6#
    • 1...exf5
      • 2.Sf3#
  • Tries
    • 1.Sg6+?
      • 1...Kd4
        • 2.Bb6#
        • 2.Qc3#
      • 1...Kxf5!
  • Keys
    • 1.Qg1!
      • 1...Kf4
        • 2.Qh2#
      • 1...exd5
        • 2.Sd3#
      • 1...exf5
        • 2.Sg6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 2
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • K(c);N_GUARD,N_SPINB(b),S_FLIGHT::QAB1(B)
    • P(f);SBLOCK,XP(H)::S(F)
    • P(f);SBLOCK,XP(I)::S(G)
  • Tries
    • Try
      • S(G);CHECK
      • Refutation
        • K(c);N_SPINB(b),P-FLIGHT,XP(I)
  • Actual
    • Q(B);
    • Vars
      • K(c);N_GUARD,N_SPINB(b),S_FLIGHT::QAB(B)
      • P(f);SBLOCK,XP(H)::S(F)
      • P(f);SBLOCK,XP(I)::S(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).