MESON Chess Problem Database

Problem Display
PID: 74833 (5n2/2Npp1R1/Rp2Pk1P/1pp2p2/1P2bP1b/6n1/5B2/4K3 w - - 0 1)

Ireland, Alfred H

Chess Amateur (The), 1910

5n2/2Npp1R1/Rp2Pk1P/1pp2p2/1P2bP1b/6n1/5B2/4K3

#2

9 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Sf1
      • 2.Bxh4#
    • 1...Sh1
      • 2.Bxh4#
    • 1...Se2
      • 2.Bxh4#
    • 1...Sh5
      • 2.Bxh4#
    • 1...Sxe6
      • 2.Se8#
    • 1...Sg6
      • 2.Rf7#
    • 1...cxb4
      • 2.Bd4#
    • 1...c4
      • 2.Bd4#
    • 1...dxe6
      • 2.Se8#
  • Keys
    • 1.bxc5!
      • threat
        • 2.Bd4#
      • 1...Sxe6
        • 2.Se8#
      • 1...bxc5
        • 2.Se8#
      • 1...dxe6
        • 2.Se8#
      • 1...Sf1
        • 2.Bxh4#
      • 1...Sh1
        • 2.Bxh4#
      • 1...Se2
        • 2.Bxh4#
      • 1...Sh5
        • 2.Bxh4#
      • 1...Sg6
        • 2.Rf7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 2
  • Sets
    • S(a);OGATE,P_PINB(B)::B(B),XB(c)
    • S(k);SBLOCK,XP(F)::S(H)
    • S(k);SBLOCK::R1(I)
    • P(e);N_GUARD,XP(C)::B(B)
    • P(e);N_GUARD::B(B)
    • P(i);SBLOCK,XP(F)::S(H)
  • Actual
    • P(C);XP(e)
    • Threat
      • B(B)
    • Vars
      • S(k);SBLOCK,XP(F)::S(H)
      • P(g);XP(C)::S(H)
      • P(i);SBLOCK,XP(F)::S(H)
      • S(a);OGATE,P_PINB(B)::B(B),XB(c)
      • S(k);SBLOCK::R1(I)
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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).