MESON Chess Problem Database

Problem Display
PID: 124212 (1N2n3/8/4NBB1/3kP2n/2p5/K7/3P4/3Q4 w - - 0 1)

Mach, Julius Zdenek

Bohemia, 1900

1N2n3/8/4NBB1/3kP2n/2p5/K7/3P4/3Q4

#2

8 + 4

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...c3
      • 2.Qb3#
  • Tries
    • 1.Sc7+?
      • 1...Kd4
        • 2.Qg1#
      • 1...Kc5
        • 2.Qg1#
      • 1...Sxc7!
  • Keys
    • 1.d4!
      • 1...Kxe6
        • 2.d5#
      • 1...Shxf6
        • 2.Sf4#
      • 1...Sexf6
        • 2.Sc7#
      • 1...cxd4 ep
        • 2.Qb3#
      • 1...c3
        • 2.Qb3#
      • 1...Sg3
        • 2.Sf4#
      • 1...Sf4
        • 2.Sxf4#
      • 1...Shg7
        • 2.Sf4#
      • 1...Sd6
        • 2.Sc7#
      • 1...Sc7
        • 2.Sxc7#
      • 1...Seg7
        • 2.Sc7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 10
    • REMOVED MATES = 0
  • Sets
    • P(a);OGATEB::QAB(A)
  • Tries
    • Try
      • S(E);CHECK
      • Vars
        • K(b);P-FLIGHT::QAB(A)
      • Refutation
        • S(d);XS(E)
  • Actual
    • P(B);
    • Vars
      • K(b);OGATE,S_FLIGHT,XS(E)::P(B)
      • S(c);N_GUARD,XB(F)::S(E)
      • S(d);N_GUARD,XB(F)::S(E)
      • P(a);EP,OGATEB,P_SPINP(a),XP(B)::QAB(A)
      • P(a);OGATEB::QAB(A)
      • S(c);N_GUARD::S(E)
      • S(c);N_GUARD::S(E),XS(c)
      • S(d);N_GUARD::S(E)
      • S(d);N_GUARD::S(E),XS(d)
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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).