MESON Chess Problem Database

Problem Display
PID: 179798 (8/8/8/2QR3P/4N2k/8/4rp1K/3Brb1n w - - 0 1)

Zalkind, Lazar Borissovich

Shakhmaty, 1924

8/8/8/2QR3P/4N2k/8/4rp1K/3Brb1n

#2

6 + 6

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Ra2
      • 2.Qe7#
    • 1...Rb2
      • 2.Qe7#
    • 1...Rc2
      • 2.Qe7#
    • 1...Rd2
      • 2.Qe7#
    • 1...Re3
      • 2.Qe7#
  • Tries
    • 1.Rd3?
      • threat
        • 2.Qg5#
      • 1...Kg4
        • 2.Qg5#
      • 1...Rxe4!
  • Keys
    • 1.Rd4!
      • threat
        • 2.Qg5#
      • 1...Kg4
        • 2.Sd2#
      • 1...Rxe4
        • 2.Qe7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 5
  • Sets
    • R(d);::QAB(D)
  • Tries
    • Try
      • R(E);
      • Threat
        • QAB1(D)
      • Vars
        • K(f);P-FLIGHT,P_SPINR(d)::QAR1(D)
      • Refutation
        • R(d);XS(C)
  • Actual
    • R(E);
    • Threat
      • QAB1(D)
    • Vars
      • K(f);P-FLIGHT,P_SPINR(d)::R(E)+S(C)
      • R(d);P_SPINR(d),XS(C)::QAB(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).