MESON Chess Problem Database

Problem Display
PID: 234201 (b1Q5/1n4N1/6p1/3P4/4kP2/2K1NnP1/B1P2B2/8 w - - 0 1)

Ahues, Herbert Siegfried Oskar

3rd HM., Deutsche Schachzeitung, 1969

b1Q5/1n4N1/6p1/3P4/4kP2/2K1NnP1/B1P2B2/8

#2

10 + 5

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...g5
      • 2.Qf5#
  • Tries
    • 1.Se6?
      • 1...Se1
        • 2.Sg5#
      • 1...Sg1
        • 2.Sg5#
      • 1...Sd2
        • 2.Sg5#
      • 1...Sh2
        • 2.Sg5#
      • 1...Sd4
        • 2.Sg5#
      • 1...Sh4
        • 2.Sg5#
      • 1...Se5
        • 2.Sg5#
      • 1...Sg5
        • 2.Sxg5#
      • 1...Sa5
        • 2.Sc5#
      • 1...Sc5
        • 2.Sxc5#
      • 1...Sd6
        • 2.Sc5#
      • 1...Sd8
        • 2.Sc5#
      • 1...g5!
  • Keys
    • 1.Sc4!
      • 1...Kxd5
        • 2.Qe6#
      • 1...Se1
        • 2.Sd2#
      • 1...Sg1
        • 2.Sd2#
      • 1...Sd2
        • 2.Sxd2#
      • 1...Sh2
        • 2.Sd2#
      • 1...Sd4
        • 2.Sd2#
      • 1...Sh4
        • 2.Sd2#
      • 1...Se5
        • 2.Sd2#
      • 1...Sg5
        • 2.Sd2#
      • 1...Sa5
        • 2.Sd6#
      • 1...Sc5
        • 2.Sd6#
      • 1...Sd6
        • 2.Sxd6#
      • 1...Sd8
        • 2.Sd6#
      • 1...g5
        • 2.Qf5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 13
    • REMOVED MATES = 0
  • Sets
    • P(c);N_GUARD::QAB1(J)
  • Tries
    • Try
      • S(I);
      • Vars
        • S(a);N_GUARD::S(I)
        • S(a);N_GUARD::S(I),XS(a)
        • S(d);N_GUARD::S(I)
        • S(d);N_GUARD::S(I),XS(d)
      • Refutation
        • P(c);
  • Actual
    • S(E);
    • Vars
      • K(b);S_FLIGHT,XP(H)::QAB1(J)
      • S(a);N_GUARD::S(E)
      • S(a);N_GUARD::S(E),XS(a)
      • S(d);N_GUARD::S(E)
      • S(d);N_GUARD::S(E),XS(d)
      • P(c);N_GUARD::QAB1(J)
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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).