MESON Chess Problem Database

Problem Display
PID: 28350 (7q/2BR3p/b3p3/3N2P1/r2k3K/6N1/2Q5/b7 w - - 0 1)

Laib, Kurt Friedrich

Kieler Schachgesellschaft, 1970

7q/2BR3p/b3p3/3N2P1/r2k3K/6N1/2Q5/b7

#2

7 + 7

16882 KSG-Problemschach 1969-1987 (Muck/Laue) 1993
3242 BCPS Rapid Solving (Cheltenham) 2001

SOLUTION

  • SOUND
  • Sets
    • 1...Qe5
      • 2.Bb6#
    • 1...Bc3
      • 2.Qxc3#
    • 1...Be2
      • 2.Sxe2#
    • 1...Bb7
      • 2.Se2#
    • 1...Bc8
      • 2.Se2#
    • 1...exd5
      • 2.Sf5#
    • 1...e5
      • 2.Sf5#
      • 2.Bb6#
  • Tries
    • 1.Qc5+?
      • 1...Kd3+
        • 2.Sb4#
        • 2.Sf4#
      • 1...Kxc5+!
  • Keys
    • 1.Bd6!
      • threat
        • 2.Qe4#
      • 1...Kxd5+
        • 2.Bf4#
      • 1...exd5
        • 2.Sf5#
      • 1...Qe5
        • 2.Bc5#
      • 1...Bd3
        • 2.Qc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 4
  • Sets
    • Q(g);SBLOCK::B(F)
    • B(a);N_GUARD::QAB1(A),XB(a)
    • B(d);N_GUARD::S(B),XB(d)
    • B(d);N_GUARD::S(B)
    • P(e);N_GUARD,P_SPINP(e),XS(D)::S(B)
  • Tries
    • Try
      • Q(A);CHECK
      • Refutation
        • K(c);CHECK,S_FLIGHT,XQ(A)
  • Actual
    • B(F);
    • Threat
      • QAR1(A)
    • Vars
      • K(c);CHECK,OGATEB,P-FLIGHT,XS(D)::R(G)+B(F)
      • P(e);N_GUARD,SBLOCK,XS(D)::S(B)
      • Q(g);SBLOCK::B(F)
      • B(d);SBLOCK::QAB1(A)
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).