MESON Chess Problem Database

Problem Display
PID: 184782 (1q2nBn1/4N1P1/1r5k/6p1/4Q2p/1r6/1P3bP1/5K2 w - - 0 1)

Palkoska, Emil

Narodni Politika, 1908

1q2nBn1/4N1P1/1r5k/6p1/4Q2p/1r6/1P3bP1/5K2

#2

7 + 9

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Rb4
      • 2.Qg6#
    • 1...Rb5
      • 2.Qg6#
    • 1...Rg6
      • 2.Qxg6#
    • 1...Rb7
      • 2.Qg6#
    • 1...Sd6
      • 2.Qg6#
    • 1...Sef6
      • 2.Qg6#
    • 1...Sgf6
      • 2.Qg6#
  • Keys
    • 1.g4!
      • threat
        • 2.Sxg8#
      • 1...Sxe7
        • 2.g8S#
      • 1...hxg4 ep
        • 2.Qh1#
      • 1...Rg6
        • 2.Qxg6#
      • 1...Sef6
        • 2.Qg6#
      • 1...Sgf6
        • 2.Qg6#
        • 2.g8S#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 5
  • Sets
    • R(e);N_GUARD::QAR1(D)
    • R(e);N_GUARD::QAR1(D),XR(e)
    • S(h);S_CUTR(e)::QAR1(D)
    • S(i);S_CUTR(e)::QAR1(D)
  • Actual
    • P(C);
    • Threat
      • S(E),XS(i)
    • Vars
      • S(i);OGATE,XS(E)::P=S
      • P(c);EP,OGATEB,XP(C)::QAR(D)
      • R(e);N_GUARD::QAR1(D),XR(e)
      • S(h);S_CUTR(e)::QAR1(D)
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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).