MESON Chess Problem Database

Problem Display
PID: 120143 (6Q1/8/1n5B/7n/2N1k1P1/2P4N/8/K4B2 w - - 0 1)

Skalik, Frantisek

Romanleser, 1899

6Q1/8/1n5B/7n/2N1k1P1/2P4N/8/K4B2

#2

8 + 3

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Sf4
      • 2.Sg5#
    • 1...Sa4
      • 2.Qa8#
    • 1...Sd7
      • 2.Qa8#
    • 1...Sa8
      • 2.Qxa8#
  • Tries
    • 1.Be2?
      • threat
        • 2.Sf2#
        • 2.Qe6#
      • 1...Sf4
        • 2.Sf2#
        • 2.Sg5#
      • 1...Sg7
        • 2.Sf2#
      • 1...Sd7
        • 2.Sf2#
        • 2.Qa8#
      • 1...Sxc4!
    • 1.Qf7?
      • threat
        • 2.Sf2#
        • 2.Sg5#
        • 2.Qf5#
      • 1...Sxc4
        • 2.Qf5#
      • 1...Sf4
        • 2.Sg5#
      • 1...Sg3
        • 2.Sf2#
        • 2.Sg5#
      • 1...Sg7
        • 2.Sf2#
        • 2.Sg5#
      • 1...Sf6!
  • Keys
    • 1.Bf4!
      • threat
        • 2.Sd2#
      • 1...Kf3
        • 2.Sd2#
      • 1...Sxf4
        • 2.Sg5#
      • 1...Sxc4
        • 2.Qa8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 3
  • Sets
    • S(b);SBLOCK::S(D)
    • S(c);N_GUARD::QAB(H)
    • S(c);N_GUARD::QAB(H),XS(c)
  • Tries
    • Try
      • B(B);
      • Threat
        • DUALS(2)
      • Vars
        • S(b);::S(D)
      • Refutation
        • S(c);XS(E)
    • Try
      • Q(H);
      • Threat
        • DUALS(3)
      • Vars
        • S(c);XS(E)::QAB1(H)
        • S(b);::S(D)
      • Refutation
        • S(b);
  • Actual
    • B(G);
    • Threat
      • S(E)
    • Vars
      • K(a);S_FLIGHT::S(E)
      • S(b);SBLOCK,XB(G)::S(D)
      • S(c);N_GUARD,XS(E)::QAB(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).