MESON Chess Problem Database

Problem Display
PID: 160989 (2b1Q3/7n/1KP1P1NR/3k1Np1/4p3/BP2pn1B/8/2br4 w - - 0 1)

Ahues, Herbert Siegfried Oskar

Themes-64, 1976

2b1Q3/7n/1KP1P1NR/3k1Np1/4p3/BP2pn1B/8/2br4

#2

10 + 9

15148 Sadier Collection 2017

SOLUTION

  • SOUND
  • Sets
    • 1...Rd4
      • 2.Sfe7#
    • 1...Ba6
      • 2.Qd7#
    • 1...Bb7
      • 2.Qd7#
    • 1...Bd7
      • 2.Qxd7#
    • 1...Sd4
      • 2.Sfe7#
    • 1...Se5
      • 2.Sge7#
  • Tries
    • 1.Qd8+?
      • 1...Bd7
        • 2.Qxd7#
      • 1...Kxe6!
  • Keys
    • 1.c7!
      • threat
        • 2.Qc6#
      • 1...Bb7
        • 2.Qd7#
      • 1...Bd7
        • 2.Qxd7#
      • 1...Sd4
        • 2.Sfe7#
      • 1...Se5
        • 2.Sge7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 2
  • Sets
    • R(b);SBLOCK::S(D)
    • B(i);N_GUARD::QAR2(J)
    • B(i);N_GUARD::QAR2(J),XB(i)
    • S(d);SBLOCK::S(D)
    • S(d);SBLOCK::S(H)
  • Tries
    • Try
      • Q(J);CHECK
      • Vars
        • B(i);N_GUARD,P_SPINB(i)::QAR2(J),XB(i)
      • Refutation
        • K(f);S_FLIGHT,XP(G)
  • Actual
    • P(F);
    • Threat
      • QAB1(J)
    • Vars
      • B(i);N_GUARD::QAR2(J)
      • B(i);N_GUARD::QAR2(J),XB(i)
      • S(d);SBLOCK::S(D)
      • S(d);SBLOCK::S(H)
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).