MESON Chess Problem Database

Problem Display
PID: 120104 (8/1B2p3/1npB3Q/3k3p/4p2r/1K1p4/2P1N3/8 w - - 0 1)

Kvicala, Jan

Ceske listy sachove, 1901

8/1B2p3/1npB3Q/3k3p/4p2r/1K1p4/2P1N3/8

#2

6 + 8

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Sa4
      • 2.c4#
    • 1...Sd7
      • 2.c4#
    • 1...Sa8
      • 2.c4#
    • 1...Sc8
      • 2.c4#
  • Tries
    • 1.Qf6?
      • threat
        • 2.Sc3#
        • 2.Qe5#
      • 1...dxe2
        • 2.Qe5#
      • 1...exd6
        • 2.Qf5#
      • 1...e6
        • 2.Qd4#
        • 2.Qe5#
      • 1...Sa4
        • 2.Qe5#
        • 2.c4#
      • 1...Sc4
        • 2.Sc3#
      • 1...Sd7
        • 2.Sc3#
        • 2.c4#
      • 1...e5
        • 2.Qxe5#
      • 1...exf6!
  • Keys
    • 1.Bc8!
      • threat
        • 2.Qe6#
      • 1...Sxc8
        • 2.c4#
      • 1...dxe2
        • 2.Qd2#
      • 1...exd6
        • 2.Qg5#
      • 1...c5
        • 2.Bb7#
      • 1...e6
        • 2.Qxe6#
      • 1...Sd7
        • 2.c4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 2
  • Sets
    • S(f);N_GUARD::P(A)
  • Tries
    • Try
      • Q(E);
      • Threat
        • DUALS(2)
      • Vars
        • P(a);XS(B)::QAR1(E)
        • P(h);N_GUARD,SBLOCK,XB(D)::QAR2(E)
        • S(f);::S(B)
        • P(h);::QAR1(E),XP(h)
      • Refutation
        • P(h);XQ(E)
  • Actual
    • B(F);N_PINP(g)
    • Threat
      • QAB1(E)
    • Vars
      • S(f);N_GUARD,XB(F)::P(A)
      • P(a);OGATEB,XS(B)::QAR(E)
      • P(h);N_GUARD,SBLOCK,XB(D)::QAR(E)
      • P(g);OGATEB::B(F)
      • P(h);::QAB1(E),XP(h)
      • S(f);N_GUARD::P(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).