MESON Chess Problem Database

Problem Display
PID: 225673 (5n2/8/R4R1q/2P1k1p1/2pp2rN/K3P1nr/6Q1/1b6 w - - 0 1)

Palkoska, Emil

Praca, 1952

5n2/8/R4R1q/2P1k1p1/2pp2rN/K3P1nr/6Q1/1b6

#2

7 + 10

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Se4
      • 2.Rf5#
    • 1...Se6
      • 2.Raxe6#
    • 1...Sg6
      • 2.Rae6#
      • 2.Rfe6#
    • 1...Sd7
      • 2.Rae6#
    • 1...Sh7
      • 2.Rae6#
  • Keys
    • 1.Rad6!
      • threat
        • 2.Qd5#
      • 1...Se6
        • 2.Rdxe6#
      • 1...Re4
        • 2.Sf3#
      • 1...Be4
        • 2.exd4#
      • 1...Se4
        • 2.Rf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • S(b);N_GUARD,P_PINP(C),S_CUTB(a)::R1(G)
    • S(j);N_GUARD::R1(F),XS(j)
    • S(j);N_GUARD::R1(F)
  • Actual
    • R(F);
    • Threat
      • QAR1(A)
    • Vars
      • S(j);N_GUARD::R1(F),XS(j)
      • R(f);SBLOCK::S(D)
      • B(a);S_CUTR(f)::P(C),XP(e)
      • S(b);N_GUARD,P_PINP(C),S_CUTB(a)::R1(G)
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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).