MESON Chess Problem Database

Problem Display
PID: 206911 (R1n5/3k1P2/7R/r2N4/4b2Q/Pq3r2/8/K7 w - - 0 1)

d'Orville, Peter Auguste

Problemes d'Echecs, 1842

R1n5/3k1P2/7R/r2N4/4b2Q/Pq3r2/8/K7

#2

7 + 6

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Sb6
      • 2.Rd8#
      • 2.Qe7#
      • 2.Qd8#
    • 1...Sa7
      • 2.Rd8#
      • 2.Qe7#
      • 2.Qd8#
    • 1...Se7
      • 2.Qxe7#
  • Tries
    • 1.f8S+?
      • 1...Ke8
        • 2.Qe7#
      • 1...Rxf8!
  • Keys
    • 1.Qd8+!
      • 1...Kxd8
        • 2.Rd6#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • S(f);N_GUARD::QAR1(C),XS(f)
  • Tries
    • Try
      • P(F);CHECK
      • Vars
        • K(e);P_SPINS(f),S_FLIGHT::QAR1(C)
      • Refutation
        • R(b);XS(F)
  • Actual
    • Q(C);CHECK
    • Vars
      • K(e);P-FLIGHT,P_SPINS(f),XQ(C)::R(E)
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).