MESON Chess Problem Database

Problem Display
PID: 93766 (8/8/1K2N3/1p2pn1q/4k3/1Qpnpb2/2r1N3/8 w - - 0 1)

Holzmann, Frantisek

Ceske listy sachove, 1899

8/8/1K2N3/1p2pn1q/4k3/1Qpnpb2/2r1N3/8

#2

4 + 10

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qf7
      • 2.Sg5#
    • 1...Qe8
      • 2.Sg5#
    • 1...Qh1
      • 2.Sg5#
    • 1...Qh2
      • 2.Sg5#
    • 1...Qh3
      • 2.Sg5#
    • 1...Qg5
      • 2.Sxg5#
    • 1...Qh7
      • 2.Sg5#
    • 1...Qh8
      • 2.Sg5#
    • 1...Ra2
      • 2.Sxc3#
    • 1...Rb2
      • 2.Sxc3#
    • 1...Rd2
      • 2.Sxc3#
    • 1...Sc1
      • 2.Sc5#
    • 1...Se1
      • 2.Sc5#
    • 1...Sb2
      • 2.Sc5#
    • 1...Sf2
      • 2.Sc5#
    • 1...Sb4
      • 2.Sc5#
    • 1...Sf4
      • 2.Sc5#
    • 1...Sc5
      • 2.Sxc5#
    • 1...Sg3
      • 2.Sxg3#
    • 1...Sd4
      • 2.Sg3#
    • 1...Sh4
      • 2.Sg3#
    • 1...Sd6
      • 2.Sg3#
    • 1...Sh6
      • 2.Sg3#
    • 1...Se7
      • 2.Sg3#
    • 1...Sg7
      • 2.Sg3#
  • Tries
    • 1.Qc4+?
      • 1...Sd4
        • 2.Sg3#
      • 1...bxc4!
  • Keys
    • 1.Qa2!
      • threat
        • 2.Qa8#
      • 1...Rxa2
        • 2.Sxc3#
      • 1...Sc1
        • 2.Sc5#
      • 1...Se1
        • 2.Sc5#
      • 1...Sb2
        • 2.Sc5#
      • 1...Sf2
        • 2.Sc5#
      • 1...Sb4
        • 2.Sc5#
      • 1...Sf4
        • 2.Sc5#
      • 1...Sc5
        • 2.Sxc5#
      • 1...Sg3
        • 2.Sxg3#
      • 1...Sd4
        • 2.Sg3#
      • 1...Sh4
        • 2.Sg3#
      • 1...Sd6
        • 2.Sg3#
      • 1...Sh6
        • 2.Sg3#
      • 1...Se7
        • 2.Sg3#
      • 1...Sg7
        • 2.Sg3#
      • 1...Qf7
        • 2.Sg5#
      • 1...Qe8
        • 2.Sg5#
      • 1...Qh7
        • 2.Sg5#
      • 1...Qh8
        • 2.Sg5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 6
  • Sets
    • Q(j);N_GUARD::S(D)
    • Q(j);N_GUARD::S(D),XQ(j)
    • R(a);N_GUARD::S(A),XP(b)
    • S(c);N_GUARD::S(D)
    • S(c);N_GUARD::S(D),XS(c)
    • S(i);N_GUARD::S(A),XS(i)
    • S(i);N_GUARD::S(A)
  • Tries
    • Try
      • Q(B);CHECK
      • Vars
        • S(i);P_SPINS(i)::S(A)
      • Refutation
        • P(g);XQ(B)
  • Actual
    • Q(B);
    • Threat
      • QAB(B)
    • Vars
      • R(a);N_GUARD,XQ(B)::S(A),XP(b)
      • S(c);N_GUARD::S(D)
      • S(c);N_GUARD::S(D),XS(c)
      • S(i);N_GUARD::S(A),XS(i)
      • S(i);N_GUARD::S(A)
      • Q(j);N_GUARD::S(D)
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).