MESON Chess Problem Database

Problem Display
PID: 198181 (4R3/4RB2/5b2/3p1r2/3p1p1p/3P1k1P/4NpN1/5K2 w - - 0 1)

Keeble, John Frederick

3rd Prize, American Chess Bulletin, 1920

4R3/4RB2/5b2/3p1r2/3p1p1p/3P1k1P/4NpN1/5K2

#2

8 + 8

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Rg5
      • 2.Sxh4#
    • 1...Rh5
      • 2.Bxh5#
    • 1...Be5
      • 2.Bxd5#
    • 1...Bg5
      • 2.Bh5#
    • 1...Bg7
      • 2.Sxh4#
    • 1...Bh8
      • 2.Sxh4#
  • Keys
    • 1.Rg8!
      • 1...Bxe7
        • 2.Sxd4#
      • 1...Re5
        • 2.Sxd4#
      • 1...Rg5
        • 2.Sxh4#
      • 1...Rh5
        • 2.Bxh5#
      • 1...Be5
        • 2.Bxd5#
      • 1...Bg5
        • 2.Bh5#
      • 1...Bg7
        • 2.Sxh4#
      • 1...Bh8
        • 2.Sxh4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • R(g);S_CUTB(h)::S(C),XP(e)
    • R(g);N_GUARD::B(G),XR(g)
    • B(h);S_CUTR(g)::B(G),XP(f)
    • B(h);S_CUTR(g)::B(G)
    • B(h);N_GUARD::S(C),XP(e)
  • Actual
    • R(H);
    • Vars
      • B(h);N_GUARD,XR(F)::S(B),XP(c)
      • R(g);S_CUTB(h)::S(B),XP(c)
      • R(g);S_CUTB(h)::S(C),XP(e)
      • R(g);N_GUARD::B(G),XR(g)
      • B(h);S_CUTR(g)::B(G),XP(f)
      • B(h);S_CUTR(g)::B(G)
      • B(h);N_GUARD::S(C),XP(e)
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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).