MESON Chess Problem Database

Problem Display
PID: 235152 (B4K2/5Rp1/8/8/7p/4p3/4N1p1/R4N1k w - - 0 1)

Cheylan, Yves

Deutsche Schachzeitung, 1974

B4K2/5Rp1/8/8/7p/4p3/4N1p1/R4N1k

#2

6 + 5

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Keys
    • 1.Rf3!
      • threat
        • 2.Rh3#
      • 1...gxf1Q
        • 2.Rf2#
      • 1...gxf1R
        • 2.Rf2#
      • 1...h3
        • 2.Rxh3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Actual
    • R(D);N_PINP(b)
    • Threat
      • R(D)
    • Vars
      • P(b);OGATEB,P_PINR(D),P_SPINQ(b),XS(B)::B(E)+R(D)
      • P(b);OGATEB,P_PINR(D),P_SPINR(b),XS(B)::B(E)+R(D)
      • P(d);::R(D),XP(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).