MESON Chess Problem Database

Problem Display
PID: 275895 (4Rn2/1r1k1P1n/1Pp1r1N1/8/5BQ1/3B4/6K1/8 w - - 0 1)

Mendes de Moraes Filho, Feliciano

Probleemblad, 1953

4Rn2/1r1k1P1n/1Pp1r1N1/8/5BQ1/3B4/6K1/8

#2

8 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Sg5
      • 2.Sxf8#
    • 1...Sf6
      • 2.Sxf8#
    • 1...Sxg6
      • 2.Qxe6#
    • 1...c5
      • 2.Bb5#
  • Tries
    • 1.Bf5?
      • threat
        • 2.Qd1#
      • 1...Sf6
        • 2.Sxf8#
      • 1...c5!
  • Keys
    • 1.Qd1!
      • threat
        • 2.Bf5#
      • 1...Re2+
        • 2.Bxe2#
      • 1...Rxg6+
        • 2.Bxg6#
      • 1...c5
        • 2.Bb5#
      • 1...Re4
        • 2.Bxe4#
      • 1...Rd6
        • 2.Se5#
      • 1...Sf6
        • 2.Sxf8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 2
  • Sets
    • S(e);N_GUARD::S(F),XS(f)
    • S(f);N_GUARD,XS(F)::QAB1(D),XR(b)
    • P(a);OGATEB::B(B)
  • Tries
    • Try
      • B(B);
      • Threat
        • QAR(D)
      • Vars
        • S(e);N_GUARD::S(F),XS(f)
      • Refutation
        • P(a);
  • Actual
    • Q(D);N_PINR(b)
    • Threat
      • QAR(D)+B(B)
    • Vars
      • R(b);CHECK,N_GUARD::QAR(D)+B(B),XR(b)
      • R(b);CHECK,OGATE,XS(F)::QAR(D)+B(B),XR(b)
      • P(a);::QAR(D)+B(B),DCHECK
      • R(b);N_GUARD::QAR(D)+B(B),XR(b)
      • R(b);N_GUARD,SBLOCK::S(F)
      • S(e);N_GUARD::S(F),XS(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).