MESON Chess Problem Database

Problem Display
PID: 121519 (5b2/1Q4Nn/8/2p1kNpP/2p3p1/2P3K1/8/8 w - - 0 1)

Mach, Julius Zdenek

Lidove noviny, 1913

5b2/1Q4Nn/8/2p1kNpP/2p3p1/2P3K1/8/8

#2

6 + 7

3713 Snap 2009
6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Qe4+?
      • 1...Kf6
        • 2.Qe6#
      • 1...Kxe4!
    • 1.Qd5+?
      • 1...Kf6
        • 2.Se8#
        • 2.Qe6#
      • 1...Kxd5!
    • 1.Qe7+?
      • 1...Kd5
        • 2.Qe6#
      • 1...Bxe7!
  • Keys
    • 1.Se3!
      • 1...Kd6
        • 2.Sxc4#
      • 1...Kf6
        • 2.Sxg4#
      • 1...Bxg7
        • 2.Qe7#
      • 1...Bd6
        • 2.Sxg4#
      • 1...Be7
        • 2.Qxe7#
      • 1...Sf6
        • 2.Sxc4#

Anticipated by 102778(1907)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(E);CHECK
      • Vars
        • K(d);OGATE,S_FLIGHT::QAR1(E)
      • Refutation
        • K(d);P-FLIGHT,XQ(E)
    • Try
      • Q(E);CHECK
      • Refutation
        • K(d);P-FLIGHT,XQ(E)
    • Try
      • Q(E);CHECK
      • Vars
        • K(d);P-FLIGHT::QAB1(E)
      • Refutation
        • B(g);XQ(E)
  • Actual
    • S(C);
    • Vars
      • K(d);S_FLIGHT::S(C),XP(a)
      • K(d);S_FLIGHT::S(C),XP(b)
      • B(g);N_GUARD,XS(F)::QAR2(E)
      • B(g);SBLOCK::S(C),XP(b)
      • B(g);N_GUARD::QAR2(E),XB(g)
      • S(f);SBLOCK::S(C),XP(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).