MESON Chess Problem Database

Problem Display
PID: 254891 (8/3p1Bp1/K4p1q/2pP1k1P/1pN1nbR1/3n1PP1/2Q5/1b6 w - - 0 1)

Garaza, Luis Alberto

Probleemblad, 1946

8/3p1Bp1/K4p1q/2pP1k1P/1pN1nbR1/3n1PP1/2Q5/1b6

#2

9 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Qg6
      • 2.Bxg6#
    • 1...Qh8
      • 2.Bg6#
    • 1...Se5
      • 2.Sd6#
    • 1...Sg5
      • 2.Rxf4#
    • 1...d6
      • 2.Be6#
  • Tries
    • 1.gxf4?
      • threat
        • 2.Se3#
      • 1...Qxf4
        • 2.Bg6#
      • 1...Sxf4!
  • Keys
    • 1.Be8!
      • threat
        • 2.Bxd7#
      • 1...Se5
        • 2.Sd6#
      • 1...Sg5
        • 2.Rxf4#
      • 1...d6
        • 2.Bd7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 0
    • REMOVED MATES = 2
  • Sets
    • Q(i);N_GUARD::B(I),XQ(i)
    • Q(i);N_GUARD::B(I)
    • S(b);P_SPINS(d),SBLOCK,S_CUTB(e)::S(D)
    • S(d);P_SPINS(b),SBLOCK,S_CUTQ(i)::R1(E),XB(e)
    • P(j);N_GUARD::B(I)
  • Tries
    • Try
      • P(C);XB(e)
      • Threat
        • S(D)
      • Vars
        • Q(i);N_GUARD,XP(C)::B(I)
      • Refutation
        • S(b);P_SPINS(d),XP(C)
  • Actual
    • B(I);
    • Threat
      • B(I),XP(j)
    • Vars
      • S(b);P_SPINS(d),SBLOCK,S_CUTB(e)::S(D)
      • S(d);P_SPINS(b),SBLOCK,S_CUTQ(i)::R1(E),XB(e)
      • P(j);::B(I)
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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).