MESON Chess Problem Database

Problem Display
PID: 201624 (1R2B3/1n6/rqP2R1K/PkN5/2p5/Q7/8/8 w - - 0 1)

Jakab, Arpad

Bekes, 1922

1R2B3/1n6/rqP2R1K/PkN5/2p5/Q7/8/8

#2

8 + 5

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Keys
    • 1.Rf5!
      • threat
        • 2.Qa4#
      • 1...Qxc6+
        • 2.Se6#
      • 1...Qxa5
        • 2.Sa4#
      • 1...Qxc5
        • 2.Rxc5#
      • 1...Rxa5
        • 2.Qb2#
      • 1...Sxc5
        • 2.Rxc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Actual
    • R(E);P_SPINP(D)
    • Threat
      • QAB1(A)
    • Vars
      • Q(d);CHECK,N_GUARD,P_SPINQ(d),P_SPINS(e),XP(D)::R(E)+S(C)
      • Q(d);N_GUARD,P_SPINS(e),SBLOCK,XP(B)::R(E)+S(C)
      • Q(d);OGATE,P_SPINQ(d),P_SPINS(e),XS(C)::R1(E),XQ(d)
      • R(c);SBLOCK,XP(B)::QAR(A)
      • S(e);OGATE,P_SPINQ(d),P_SPINS(e),XS(C)::R1(E),XS(e)
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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).