MESON Chess Problem Database

Problem Display
PID: 214769 (bknr4/1n2p3/1p2N3/1NRB4/1p6/1P6/1P6/RKQ5 w - - 0 1)

Faysse Pere, J

Detroit Free Press, 1878

bknr4/1n2p3/1p2N3/1NRB4/1p6/1P6/1P6/RKQ5

#2

9 + 8

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Rxd5
      • 2.Rxc8#
    • 1...Rd6
      • 2.Rxc8#
    • 1...Rd7
      • 2.Rxc8#
    • 1...Sxc5
      • 2.Rxa8#
    • 1...Sbd6
      • 2.Rxa8#
  • Tries
    • 1.Sbc7?
      • threat
        • 2.Rxa8#
      • 1...Sa7
        • 2.Sa6#
      • 1...Sa5!
  • Keys
    • 1.Sec7!
      • threat
        • 2.Sa6#
        • 2.Rxa8#
      • 1...Sxc5
        • 2.Rxa8#
      • 1...Sa7
        • 2.Sa6#
      • 1...Sa5
        • 2.Sa6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 4
  • Sets
    • R(h);N_GUARD,XB(H)::R1(G),XS(g)
    • R(h);N_GUARD::R1(G),XS(g)
    • S(c);XR(G)::R1(A),XB(e)
    • S(c);::R1(A),XB(e)
  • Tries
    • Try
      • S(F);
      • Threat
        • R1(A),XB(e)
      • Vars
        • S(g);SBLOCK::S(F)
      • Refutation
        • S(c);
  • Actual
    • S(I);
    • Threat
      • DUALS(2)
    • Vars
      • S(c);XR(G)::R1(A),XB(e)
      • S(g);::S(I)
      • S(c);::S(I)
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Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) & CSS/Javascript (jQuery, Bootstrap & DataTables).