MESON Chess Problem Database

Problem Display
PID: 10602 (8/8/4p1B1/1KB5/5Nr1/1Q1N1kp1/4r1n1/8 w - - 0 1)

Netto, Joao Gurzoni

2nd HM., Freie Presse, 1966

8/8/4p1B1/1KB5/5Nr1/1Q1N1kp1/4r1n1/8

#2

6 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Rxf4
      • 2.Se5#
    • 1...Sxf4
      • 2.Se1#
  • Tries
    • 1.Qd5+?
      • 1...Re4
        • 2.Bxe4#
        • 2.Qxe4#
      • 1...exd5!
  • Keys
    • 1.Qd1!
      • threat
        • 2.Qxe2#
      • 1...Rxf4
        • 2.Se5#
      • 1...Sxf4
        • 2.Se1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • R(e);SBLOCK,XS(C)::QAR(A)+S(B),DCHECK
    • S(b);SBLOCK,XS(C)::QAR(A)+S(B),DCHECK
  • Tries
    • Try
      • Q(A);CHECK
      • Refutation
        • P(f);XQ(A)
  • Actual
    • Q(A);P_PINR(a)
    • Threat
      • QAB1(A),XR(a)
    • Vars
      • R(e);SBLOCK,XS(C)::S(B)
      • S(b);N_GUARD,SBLOCK,XS(C)::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).