MESON Chess Problem Database

Problem Display
PID: 103156 (5R2/1p2K2p/q1p5/1r2k2r/2P3P1/p2R1PPn/2n5/3b4 w - - 0 1)

Marble, Murray

Westen und Daheim, 1911

5R2/1p2K2p/q1p5/1r2k2r/2P3P1/p2R1PPn/2n5/3b4

#2

7 + 11

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rh4
      • 2.Rf5#
    • 1...Rf5
      • 2.Rxf5#
    • 1...Rh6
      • 2.Rf5#
    • 1...Sd4
      • 2.Re3#
    • 1...Sf4
      • 2.gxf4#
    • 1...Sg5
      • 2.Rf5#
    • 1...c5
      • 2.Rd5#
  • Keys
    • 1.Rf6!
      • threat
        • 2.Re6#
      • 1...Rh6
        • 2.Rf5#
      • 1...Sd4
        • 2.Re3#
      • 1...Sf4
        • 2.gxf4#
      • 1...Sg5
        • 2.Rf5#
      • 1...c5
        • 2.Rd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 2
  • Sets
    • R(g);N_GUARD::R1(G)
    • R(g);N_GUARD::R1(G),XR(g)
    • S(b);N_GUARD,SBLOCK::R(A)
    • S(d);OGATE::P(C),XS(d)
    • S(d);S_CUTR(g)::R1(G)
    • P(i);N_GUARD,S_CUTR(e)::R1(A)
  • Actual
    • R(G);
    • Threat
      • R1(G)
    • Vars
      • R(g);N_GUARD::R1(G)
      • S(b);N_GUARD,SBLOCK::R(A)
      • S(d);OGATE::P(C),XS(d)
      • S(d);S_CUTR(g)::R1(G)
      • P(i);N_GUARD,S_CUTR(e)::R1(A)
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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).