MESON Chess Problem Database

Problem Display
PID: 187633 (8/1N6/8/8/2Pk1B2/K7/b1Q5/8 w - - 0 1)

Decker, Adolfph L

Deutsches Wochenschach, 1909

8/1N6/8/8/2Pk1B2/K7/b1Q5/8

#2

5 + 2

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Tries
    • 1.Qe2?
      • threat
        • 2.Be5#
      • 1...Kc3
        • 2.Be5#
      • 1...Bxc4!
  • Keys
    • 1.Sa5!
      • 1...Kc5
        • 2.Qf2#
      • 1...Bxc4
        • 2.Qxc4#
      • 1...Bb1
        • 2.Sb3#
      • 1...Bb3
        • 2.Sxb3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(A);
      • Threat
        • B(D)
      • Vars
        • K(b);S_FLIGHT::B(D)
      • Refutation
        • B(a);XP(C)
  • Actual
    • S(E);
    • Vars
      • K(b);S_FLIGHT::QAB(A)
      • B(a);OGATE,XP(C)::QAR1(A),XB(a)
      • B(a);N_GUARD::S(E)
      • B(a);N_GUARD::S(E),XB(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).