MESON Chess Problem Database

Problem Display
PID: 93809 (K4bb1/8/4N3/Q3NkP1/8/p7/4R1P1/8 w - - 0 1)

Kosek, Wojtech

Ceske listy sachove, 1899

K4bb1/8/4N3/Q3NkP1/8/p7/4R1P1/8

#2

7 + 4

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Qa4?
      • threat
        • 2.Qg4#
      • 1...Kxe6
        • 2.Qd7#
      • 1...Bb4!
    • 1.Qd5?
      • threat
        • 2.Rf2#
        • 2.g4#
      • 1...Bc5
        • 2.g4#
      • 1...Bxe6!
  • Keys
    • 1.Qd2!
      • threat
        • 2.Sd4#
      • 1...Kxe6
        • 2.Qd7#
      • 1...Bxe6
        • 2.g4#
      • 1...Bc5
        • 2.Sg7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(C);
      • Threat
        • QAB1(C)
      • Vars
        • K(b);OGATEB,S_FLIGHT,XS(F)::QAB1(C)
      • Refutation
        • B(c);
    • Try
      • Q(C);
      • Threat
        • DUALS(2)
      • Vars
        • B(c);::P(B)
      • Refutation
        • B(d);XS(F)
  • Actual
    • Q(C);
    • Threat
      • S(F)
    • Vars
      • K(b);OGATEB,S_FLIGHT,XS(F)::QAB1(C)
      • B(d);SBLOCK,XS(F)::P(B)
      • B(c);N_GUARD::S(F)
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).