MESON Chess Problem Database

Problem Display
PID: 120018 (3n1N2/6Q1/2RP1pn1/4k1Nb/1b2P1R1/r6p/5P1K/8 w - - 0 1)

Marik, Josef V

Plzenky besedy, 1909

3n1N2/6Q1/2RP1pn1/4k1Nb/1b2P1R1/r6p/5P1K/8

#2

9 + 8

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Ra1
      • 2.Sf3#
    • 1...Ra2
      • 2.Sf3#
    • 1...Rf3
      • 2.Sxf3#
    • 1...Ra4
      • 2.Sf3#
    • 1...Ra5
      • 2.Sf3#
    • 1...Ra6
      • 2.Sf3#
    • 1...Ra7
      • 2.Sf3#
    • 1...Ra8
      • 2.Sf3#
    • 1...Bc3
      • 2.Sf3#
  • Keys
    • 1.Qa7!
      • threat
        • 2.Sd7#
      • 1...Rxa7
        • 2.Sf3#
      • 1...Bxg4
        • 2.Sxg6#
      • 1...Sxf8
        • 2.f4#
      • 1...Sxc6
        • 2.Sf7#
      • 1...fxg5
        • 2.Qg7#
      • 1...Bc5
        • 2.Qxc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 8
  • Sets
    • R(a);N_GUARD::S(E)
    • R(a);N_GUARD,P_PINP(A)::S(E)
    • R(a);N_GUARD::S(E),XR(a)
    • B(c);S_CUTR(a)::S(E)
  • Actual
    • Q(H);N_PINP(f)
    • Threat
      • S(I)
    • Vars
      • R(a);N_GUARD,XQ(H)::S(E)
      • B(e);N_GUARD,XR(D)::S(I),XS(g)
      • S(g);N_GUARD,XS(I)::P(A)
      • S(h);N_GUARD,XR(F)::S(E)
      • P(f);OGATEB,XS(E)::QAB(H)
      • B(c);N_GUARD::QAR2(H),XB(c)
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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).