MESON Chess Problem Database

Problem Display
PID: 206912 (8/7r/8/3Qpk1N/2Bb1npP/8/3P2P1/1K6 w - - 0 1)

d'Orville, Peter Auguste

Problemes d'Echecs, 1842

8/7r/8/3Qpk1N/2Bb1npP/8/3P2P1/1K6

#2

7 + 6

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Se2
      • 2.Bd3#
    • 1...Sxg2
      • 2.Bd3#
    • 1...Sd3
      • 2.Bxd3#
    • 1...Sh3
      • 2.Bd3#
    • 1...Se6
      • 2.Bd3#
    • 1...Sg6
      • 2.Bd3#
  • Tries
    • 1.Qe6+?
      • 1...Ke4
        • 2.Sg3#
        • 2.Sf6#
      • 1...Sxe6!
    • 1.Qf7+?
      • 1...Ke4
        • 2.Sg3#
      • 1...Rxf7!
  • Keys
    • 1.Qe4+!
      • 1...Kxe4
        • 2.Sg3#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 6
  • Sets
    • S(b);N_GUARD::B(D)
    • S(b);N_GUARD,XP(C)::B(D)
    • S(b);N_GUARD::B(D),XS(b)
    • S(b);N_GUARD,SBLOCK::B(D)
  • Tries
    • Try
      • Q(F);CHECK,N_PINP(d)
      • Refutation
        • S(b);XQ(F)
    • Try
      • Q(F);CHECK,N_PINP(d)
      • Vars
        • K(e);S_FLIGHT::S(G)
      • Refutation
        • R(f);XQ(F)
  • Actual
    • Q(F);CHECK,N_PINP(d)
    • Vars
      • K(e);S_FLIGHT,XQ(F)::S(G)
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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).