MESON Chess Problem Database

Problem Display
PID: 96934 (8/2KN4/8/ppQ5/kpn5/b1r5/NpP5/8 w - - 0 1)

Zuk, Henryk

Problem (Zagreb), 1957

8/2KN4/8/ppQ5/kpn5/b1r5/NpP5/8

#2

5 + 8

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Sd2
      • 2.Sb6#
    • 1...Se3
      • 2.Sb6#
    • 1...Se5
      • 2.Sb6#
    • 1...Sb6
      • 2.Sxb6#
    • 1...Sd6
      • 2.Sb6#
    • 1...b3
      • 2.Sxc3#
  • Tries
    • 1.Qc6?
      • threat
        • 2.Sc5#
      • 1...Sd2
        • 2.Sb6#
      • 1...Se3
        • 2.Sb6#
      • 1...Se5
        • 2.Sb6#
      • 1...Sb6
        • 2.Sxb6#
      • 1...Sd6
        • 2.Sb6#
      • 1...b3!
  • Keys
    • 1.Qd4!
      • threat
        • 2.Sc5#
      • 1...Sd2+
        • 2.Sxc3#
      • 1...Se3+
        • 2.Sxc3#
      • 1...Se5+
        • 2.Sxc3#
      • 1...Sb6+
        • 2.Sxc3#
      • 1...Sd6+
        • 2.Sxc3#
      • 1...b3
        • 2.Sb6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 6
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • S(f);N_GUARD,P_PINQ(C)::S(E)
    • S(f);N_GUARD,P_PINQ(C)::S(E),XS(f)
    • P(e);N_GUARD::S(A),XR(c)
  • Tries
    • Try
      • Q(C);P_PINP(h)
      • Threat
        • S(E)
      • Vars
        • S(f);N_GUARD,P_PINQ(C)::S(E)
        • S(f);N_GUARD,P_PINQ(C)::S(E),XS(f)
      • Refutation
        • P(e);
  • Actual
    • Q(C);
    • Threat
      • S(E)
    • Vars
      • S(f);CHECK,P_SPINP(e)::S(A),XR(c)
      • P(e);P_SPINS(f)::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).