MESON Chess Problem Database

Problem Display
PID: 264247 (8/8/8/6K1/6R1/5R2/7p/Q5nk w - - 0 1)

Salai (Snr), Ladislav

Prace, 1983

8/8/8/6K1/6R1/5R2/7p/Q5nk

#2

4 + 3

6490 yacpdb 2022

SOLUTION

  • SOUND
  • Keys
    • 1.Qa8!
      • threat
        • 2.Rf1#
      • 1...Sxf3+
        • 2.Qxf3#
      • 1...Sh3+
        • 2.Rxh3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Actual
    • Q(A);N_PINS(a)
    • Threat
      • QAB(A)+R(B)
    • Vars
      • S(a);CHECK,OGATE,P_SPINS(a),XR(B)::QAB(A),XS(a)
      • S(a);CHECK,N_GUARD::QAB(A)+R(B),XS(a)
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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).