MESON Chess Problem Database

Problem Display
PID: 172041 (3b1B2/2ppr2q/2Pkn1bR/1P1NR3/3p1p2/3N3B/8/4K3 w - - 0 1)

Apro, Laszlo

4th Prize, Magyar Sakkszovetseg, 1970

3b1B2/2ppr2q/2Pkn1bR/1P1NR3/3p1p2/3N3B/8/4K3

#2

9 + 10

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Tries
    • 1.Sb6?
      • threat
        • 2.Sc4#
        • 2.Sc8#
        • 2.Rd5#
      • 1...Bxd3
        • 2.Rd5#
      • 1...Sxf8
        • 2.Sc4#
        • 2.Sc8#
      • 1...dxc6
        • 2.Rxe6#
      • 1...Be4
        • 2.Sc4#
        • 2.Sc8#
      • 1...Sc5
        • 2.Sc4#
        • 2.Sc8#
      • 1...Sg5
        • 2.Sc4#
        • 2.Sc8#
      • 1...Sg7
        • 2.Sc4#
        • 2.Sc8#
      • 1...cxb6!
  • Keys
    • 1.Sf6!
      • threat
        • 2.Rd5#
      • 1...Sxf8
        • 2.Se4#
      • 1...dxc6
        • 2.Rxe6#
      • 1...Be4
        • 2.Se8#
      • 1...Sc5
        • 2.Se8#
      • 1...Sg5
        • 2.Se8#
      • 1...Sg7
        • 2.Se4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(E);
      • Threat
        • DUALS(3)
      • Vars
        • B(e);P_SPINS(d),XS(B)::R1(F)
        • P(g);N_GUARD,XP(G)::R1(F),XS(d)
      • Refutation
        • P(f);XS(E)
  • Actual
    • S(E);
    • Threat
      • R1(F)
    • Vars
      • S(d);N_SPINR(h),P_PINR(F),S_CUTB(e),XB(I)::S(E)
      • P(g);N_GUARD,XP(G)::R1(F),XS(d)
      • B(e);N_GUARD::S(E)
      • S(d);P_PINR(F),S_CUTB(e)::S(E)
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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).