MESON Chess Problem Database

Problem Display
PID: 187816 (3k4/1P1nn3/2B5/6N1/8/8/7Q/4K3 w - - 0 1)

Mach, Julius Zdenek

Zlata Praha, 1909

3k4/1P1nn3/2B5/6N1/8/8/7Q/4K3

#2

5 + 3

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Sc5
      • 2.Sf7#
    • 1...Se5
      • 2.Se6#
    • 1...Sb6
      • 2.Se6#
      • 2.Sf7#
    • 1...Sf6
      • 2.Se6#
      • 2.Sf7#
    • 1...Sb8
      • 2.Se6#
      • 2.Sf7#
    • 1...Sf8
      • 2.Sf7#
  • Tries
    • 1.Qb8+?
      • 1...Sxb8
        • 2.Se6#
      • 1...Sc8!
  • Keys
    • 1.Qe5!
      • 1...Ke8
        • 2.b8Q#
        • 2.b8R#
      • 1...Sxe5
        • 2.Se6#
      • 1...Sxc6
        • 2.Sf7#
      • 1...Sc5
        • 2.Sf7#
      • 1...Sb6
        • 2.Se6#
        • 2.Sf7#
      • 1...Sf6
        • 2.Se6#
        • 2.Sf7#
        • 2.Qa5#
      • 1...Sb8
        • 2.Se6#
        • 2.Sf7#
        • 2.Qa5#
      • 1...Sf8
        • 2.Sf7#
        • 2.Qa5#
      • 1...Sd5
        • 2.Sf7#
      • 1...Sf5
        • 2.Sf7#
      • 1...Sg6
        • 2.Sf7#
      • 1...Sc8
        • 2.Sf7#
      • 1...Sg8
        • 2.Sf7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 1
  • Sets
    • S(a);::S(C)
  • Tries
    • Try
      • Q(B);CHECK
      • Vars
        • S(a);XQ(B)::S(C)
      • Refutation
        • S(b);P_SPINS(b)
  • Actual
    • Q(B);
    • Vars
      • K(c);P-FLIGHT,P_SPINS(a)::P=Q
      • S(a);XQ(B)::S(C)
      • S(b);XB(D)::S(C)
      • S(a);::S(C)
      • S(b);::S(C)
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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).