MESON Chess Problem Database

Problem Display
PID: 174103 (8/8/7b/8/1R6/4n3/KN2p3/1Bk1B2R w - - 0 1)

Notaro, Rosario

3rd HM., Boletim da UBP, 1986-1987

8/8/7b/8/1R6/4n3/KN2p3/1Bk1B2R

#2

6 + 4

1077 Boletim da UBP 1989

SOLUTION

  • SOUND
  • Sets
    • 1...Sd1
      • 2.Sd3#
    • 1...Sf1
      • 2.Rc4#
    • 1...Sg2
      • 2.Rc4#
    • 1...Sc4
      • 2.Rxc4#
    • 1...Sg4
      • 2.Rc4#
    • 1...Sf5
      • 2.Rc4#
  • Tries
    • 1.Rc4+?
      • 1...Sc2
        • 2.Rxc2#
      • 1...Sxc4!
  • Keys
    • 1.Rd4!
      • threat
        • 2.Bd2#
      • 1...Sd1
        • 2.Sd3#
      • 1...Sf1
        • 2.Rc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 4
  • Sets
    • S(c);SBLOCK::S(E)
    • S(c);N_GUARD::R(F)
    • S(c);N_GUARD::R(F),XS(c)
  • Tries
    • Try
      • R(F);CHECK
      • Vars
        • S(c);N_GUARD,P_SPINS(c)::R1(F),XS(c)
      • Refutation
        • S(c);XR(F)
  • Actual
    • R(F);
    • Threat
      • R(C)+B(B),DCHECK
    • Vars
      • S(c);SBLOCK::S(E)
      • S(c);N_GUARD::R(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).