MESON Chess Problem Database

Problem Display
PID: 206779 (4r2k/7p/7P/4b3/2n1N3/4R1Q1/8/7K w - - 0 1)

Klark, Dmitry Vasilevich

La Strategie, 1870

4r2k/7p/7P/4b3/2n1N3/4R1Q1/8/7K

#2

5 + 5

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Bf4
      • 2.Qg7#
    • 1...Bd6
      • 2.Qg7#
    • 1...Bc7
      • 2.Qg7#
    • 1...Bg7
      • 2.Qxg7#
    • 1...Bb8
      • 2.Qg7#
  • Keys
    • 1.Sf6!
      • threat
        • 2.Qg7#
      • 1...Bxg3
        • 2.Rxe8#
      • 1...Bxf6
        • 2.Rxe8#
      • 1...Re7
        • 2.Qg8#
      • 1...Rg8
        • 2.Qxg8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 5
  • Sets
    • B(b);N_GUARD::QAB1(C)
    • B(b);N_GUARD::QAB1(C),XB(b)
  • Actual
    • S(D);
    • Threat
      • QAB1(C)
    • Vars
      • B(b);OGATE,XQ(C)::R(B),XR(d)
      • B(b);OGATE,XS(D)::R(B),XR(d)
      • R(d);N_GUARD::QAR1(C)
      • R(d);N_GUARD::QAR1(C),XR(d)
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).