MESON Chess Problem Database

Problem Display
PID: 273551 (4Nb2/8/4pRBk/R4np1/K5pr/1p4p1/1P3P1N/2Bb3Q w - - 0 1)

Jessurun Lobo, Johan Rudolf

Probleemblad, 1952

4Nb2/8/4pRBk/R4np1/K5pr/1p4p1/1P3P1N/2Bb3Q

#2

10 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Rh5
      • 2.Bxf5#
    • 1...Bc2
      • 2.Sxg4#
    • 1...Sd4
      • 2.Bxg5#
    • 1...Sd6
      • 2.Bxg5#
    • 1...Se7
      • 2.Bxg5#
    • 1...Sg7
      • 2.Bxg5#
  • Keys
    • 1.f4!
      • threat
        • 2.fxg5#
      • 1...gxf4 ep+
        • 2.Sg4#
      • 1...gxf4
        • 2.Bxf4#
      • 1...Rh5
        • 2.Bxf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 5
  • Sets
    • R(e);SBLOCK::R(H)+B(I),XS(f)
    • B(a);N_GUARD::S(E),XP(d)
    • S(f);::B(A),XP(g)
  • Actual
    • P(D);N_PINP(g)
    • Threat
      • P(D),XP(g)
    • Vars
      • P(d);CHECK,EP,P_SPINP(g),S_CUTB(a),XP(D)::S(E)
      • P(g);OGATE,P_SPINP(g),XP(D)::B(A),XP(g)
      • R(e);SBLOCK::R(H)+B(I),XS(f)
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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).