MESON Chess Problem Database

Problem Display
PID: 69792 (4rRq1/b4n2/3p2p1/R1p3pb/1NB1k1p1/3pNnB1/5Q2/3K4 w - - 0 1)

Lacny, Ludovit

Praca, 1948

4rRq1/b4n2/3p2p1/R1p3pb/1NB1k1p1/3pNnB1/5Q2/3K4

#2

8 + 13

SOLUTION

  • SOUND
  • Sets
    • 1...Sd4
      • 2.Bxd3#
      • 2.Bd5#
  • Tries
    • 1.Sed5?
      • threat
        • 2.Bxd3#
      • 1...cxb4
        • 2.Sf6#
      • 1...Se1
        • 2.Sc3#
        • 2.Sf6#
      • 1...S3e5
        • 2.Sc3#
        • 2.Sf6#
      • 1...S7e5
        • 2.Sc3#
        • 2.Qe3#
      • 1...d2
        • 2.Bd3#
      • 1...Kf5!
  • Keys
    • 1.Sxg4!
      • threat
        • 2.Bxd3#
      • 1...Kf5
        • 2.Qxf3#
      • 1...cxb4
        • 2.Sf6#
      • 1...Se1
        • 2.Bd5#
      • 1...S3e5
        • 2.Bd5#
      • 1...S7e5
        • 2.Qe3#
      • 1...d2
        • 2.Bd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(C);
      • Threat
        • B(F),XP(a)
      • Vars
        • P(e);XS(E)::S(C)
        • P(a);::B(F)
      • Refutation
        • K(c);P_SPINS(b),S_FLIGHT
  • Actual
    • S(C);XP(d)
    • Threat
      • B(F),XP(a)
    • Vars
      • K(c);P_SPINP(e),P_SPINS(b),S_FLIGHT::QAR2(B),XS(b)
      • P(e);XS(E)::S(C)
      • S(b);P_PINS(C)::B(F)
      • S(k);::QAR1(B)
      • P(a);::B(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).