MESON Chess Problem Database

Problem Display
PID: 52593 (8/3N3K/r1b3p1/8/3kN2R/1Q6/4r3/3q4 w - - 0 1)

Valladao Monteiro da Silveira, Joaquim

Boletim da UBP, 1964

8/3N3K/r1b3p1/8/3kN2R/1Q6/4r3/3q4

#2

5 + 6

5309 O Mosqueteiro do Rei 1997

SOLUTION

  • SOUND
  • Sets
    • 1...Bd5
      • 2.Qc3#
  • Tries
    • 1.Sd2+?
      • 1...Be4
        • 2.Sf3#
      • 1...Re4!
    • 1.Sec5+?
      • 1...Re4
        • 2.Se6#
      • 1...Be4!
    • 1.Sd6+?
      • 1...Be4
        • 2.Sb5#
      • 1...Re4!
  • Keys
    • 1.Sg5+!
      • 1...Re4
        • 2.Se6#
      • 1...Be4
        • 2.Sf3#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • B(e);SBLOCK::QAB1(A)
  • Tries
    • Try
      • S(B);CHECK
      • Vars
        • B(e);P_SPINB(e)::S(B)
      • Refutation
        • R(b);P_SPINR(b)
    • Try
      • S(B);CHECK
      • Vars
        • R(b);P_SPINR(b)::S(B)
      • Refutation
        • B(e);P_SPINB(e)
    • Try
      • S(B);CHECK
      • Vars
        • B(e);P_SPINB(e)::S(B)
      • Refutation
        • R(b);P_SPINR(b)
  • Actual
    • S(B);CHECK
    • Vars
      • R(b);P_SPINR(b)::S(B)
      • B(e);P_SPINB(e)::S(B)
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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).