MESON Chess Problem Database

Problem Display
PID: 136178 (1Kn5/2R2NpP/2ppNkPb/Rb3P2/n7/BQ1Bp3/7r/8 w - - 0 1)

Ahues, Herbert Siegfried Oskar

Schach, 1999

1Kn5/2R2NpP/2ppNkPb/Rb3P2/n7/BQ1Bp3/7r/8

#2

11 + 10

6490 yacpdb 2010

SOLUTION

  • SOUND
  • Sets
    • 1...Sb2
      • 2.Qc3#
    • 1...Sc3
      • 2.Qxc3#
    • 1...Sc5
      • 2.Qc3#
    • 1...Sab6
      • 2.Qc3#
  • Tries
    • 1.Seg5?
      • threat
        • 2.Qe6#
      • 1...Bc4
        • 2.Se4#
      • 1...Sc5
        • 2.Qc3#
      • 1...d5!
    • 1.Sxg7?
      • threat
        • 2.Se8#
      • 1...Kxg7
        • 2.h8Q#
      • 1...Bxg7
        • 2.Qe6#
      • 1...c5!
    • 1.Sf8?
      • threat
        • 2.Qe6#
      • 1...Sc5
        • 2.Qc3#
      • 1...d5
        • 2.Sd7#
      • 1...Bc4!
    • 1.Bb2+?
      • 1...Sxb2
        • 2.Qc3#
      • 1...Sc3
        • 2.Bxc3#
        • 2.Qxc3#
      • 1...Rxb2!
  • Keys
    • 1.Sc5!
      • threat
        • 2.Qe6#
      • 1...Sxc5
        • 2.Qc3#
      • 1...Bc4
        • 2.Se4#
      • 1...d5
        • 2.Sd7#

There are these versions: 132033

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 3
  • Sets
    • S(c);N_GUARD::QAB(B)
    • S(c);N_GUARD::QAB(B),XS(c)
  • Tries
    • Try
      • S(F);
      • Threat
        • QAR1(B)
      • Vars
        • B(d);::S(F)
        • S(c);N_GUARD::QAB(B)
      • Refutation
        • P(f);
    • Try
      • S(F);XP(i)
      • Threat
        • S(F)
      • Vars
        • K(g);S_FLIGHT,XS(F)::P=Q
        • B(h);SBLOCK,XS(F)::QAR1(B)
      • Refutation
        • P(e);
    • Try
      • S(F);
      • Threat
        • QAR1(B)
      • Vars
        • S(c);N_GUARD::QAB(B)
        • P(f);::S(F)
      • Refutation
        • B(d);
    • Try
      • B(A);CHECK
      • Vars
        • S(c);N_GUARD,XB(A)::QAB(B)
      • Refutation
        • R(a);XB(A)
  • Actual
    • S(F);
    • Threat
      • QAR1(B)
    • Vars
      • S(c);N_GUARD,XS(F)::QAB(B)
      • B(d);::S(F)
      • P(f);::S(F)
HTML5 logo

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).