MESON Chess Problem Database

Problem Display
PID: 129703 (1r6/R4Q1p/2NB4/5n2/qP6/k7/7K/2nN4 w - - 0 1)

Drnek, Josef

Nove parizske mody, 1904

1r6/R4Q1p/2NB4/5n2/qP6/k7/7K/2nN4

#2

7 + 6

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qa5
      • 2.Rxa5#
    • 1...Qa6
      • 2.Rxa6#
    • 1...Rxb4
      • 2.Bxb4#
    • 1...Se3
      • 2.b5#
    • 1...Sg3
      • 2.b5#
    • 1...Sd4
      • 2.b5#
    • 1...Sh4
      • 2.b5#
    • 1...Sh6
      • 2.b5#
    • 1...Se7
      • 2.b5#
    • 1...Sg7
      • 2.b5#
  • Keys
    • 1.Sd4!
      • threat
        • 2.Sc2#
      • 1...Qxa7
        • 2.Qxa7#
      • 1...Sxd4
        • 2.b5#
      • 1...Qa5
        • 2.Rxa5#
      • 1...Qa6
        • 2.Rxa6#
      • 1...Sb3
        • 2.Qxb3#
      • 1...Rc8
        • 2.Sb5#
      • 1...Se3
        • 2.b5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 6
  • Sets
    • Q(c);OGATEB::R(F),XQ(c)
    • R(f);OGATE,P_SPINR(f),XP(C)::B(E),XR(f)
    • S(d);N_GUARD::B(E)+P(C)
  • Actual
    • S(D);
    • Threat
      • S(D)
    • Vars
      • Q(c);N_SPINQ(c),OGATE,XR(F)::QAR(G),XQ(c)
      • S(d);N_GUARD,XS(D)::B(E)+P(C)
      • Q(c);OGATEB::R(F),XQ(c)
      • S(a);N_GUARD::QAR1(G),XS(a)
      • R(f);N_GUARD::S(D)
      • S(d);N_GUARD::B(E)+P(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).