MESON Chess Problem Database

Problem Display
PID: 240136 (3K2b1/5pBn/2p2NPn/6kB/6p1/3QPppR/4p2N/5q2 w - - 0 1)

Zilahi, Zoltan

L'Italia Scacchistica, 1950

3K2b1/5pBn/2p2NPn/6kB/6p1/3QPppR/4p2N/5q2

#2

9 + 11

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Sf5
      • 2.Se4#
    • 1...fxg6
      • 2.Qxg6#
  • Tries
    • 1.Qf5+?
      • 1...Sxf5
        • 2.Se4#
      • 1...Kxf5!
    • 1.Qd5+?
      • 1...Sf5
        • 2.Se4#
      • 1...cxd5!
  • Keys
    • 1.Bxg4!
      • threat
        • 2.Rh5#
      • 1...Qxh3
        • 2.Sxf3#
      • 1...Sxf6
        • 2.Bxh6#
      • 1...fxg6
        • 2.Se4#
      • 1...Sf5
        • 2.Qxf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • S(h);SBLOCK::S(F)
    • P(i);OGATE,XP(G)::QAR1(B),XP(i)
  • Tries
    • Try
      • Q(B);CHECK
      • Vars
        • S(h);SBLOCK,XQ(B)::S(F)
      • Refutation
        • K(f);P-FLIGHT,XQ(B)
    • Try
      • Q(B);CHECK
      • Vars
        • S(h);P_SPINS(h)::S(F)
      • Refutation
        • P(g);XQ(B)
  • Actual
    • B(E);XP(e)
    • Threat
      • R1(D)
    • Vars
      • Q(a);N_GUARD,XR(D)::S(A),XP(c)
      • S(j);SBLOCK,XS(F)::B(H),XS(h)
      • P(i);SBLOCK,XP(G)::S(F)
      • S(h);N_GUARD::QAR1(B),XS(h)
HTML5 logo

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).