MESON Chess Problem Database

Problem Display
PID: 125401 (8/r1R4B/1QnBPkn1/R5pb/2P2Nq1/b1K1N3/2pp4/8 w - - 0 1)

Caillaud, Michel

Source?, 1997

8/r1R4B/1QnBPkn1/R5pb/2P2Nq1/b1K1N3/2pp4/8

#2

10 + 10

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qd1
      • 2.Rf5#
    • 1...Qe2
      • 2.Rf5#
    • 1...Qf3
      • 2.Rf5#
    • 1...Qf5
      • 2.Rxf5#
    • 1...Qxe6
      • 2.Sxh5#
    • 1...Qg1
      • 2.Rf5#
    • 1...Qg2
      • 2.Rf5#
    • 1...Qg3
      • 2.Rf5#
    • 1...Qh4
      • 2.Rf5#
    • 1...Rxa5
      • 2.Rf7#
    • 1...Ra6
      • 2.Rf7#
    • 1...Ra8
      • 2.Rf7#
    • 1...Sh4
      • 2.Sed5#
    • 1...Se5
      • 2.Sed5#
    • 1...Sf8
      • 2.Sed5#
    • 1...Sh8
      • 2.Sed5#
  • Keys
    • 1.Be5+!
      • 1...Scxe5
        • 2.Sfd5#
      • 1...Sgxe5
        • 2.Sed5#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 15
  • Sets
    • Q(d);N_GUARD::R1(E)
    • Q(d);N_GUARD,P_PINS(B)::R1(E)
    • Q(d);N_GUARD::R1(E),XQ(d)
    • Q(d);N_GUARD,SBLOCK,XP(H)::S(D),XB(f)
    • R(j);N_GUARD,XR(E)::R1(I)
    • R(j);N_GUARD::R1(I)
    • S(i);::S(B)
  • Actual
    • B(G);CHECK
    • Vars
      • S(g);SBLOCK,XB(G)::S(D)
      • S(i);SBLOCK,XB(G)::S(B)
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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).