MESON Chess Problem Database

Problem Display
PID: 141290 (8/4R1K1/qp6/1r3N1p/2Bp1Pkp/1QN2R1p/5p1P/rb6 w - - 0 1)

Petite, Efren

Phenix, 1989

8/4R1K1/qp6/1r3N1p/2Bp1Pkp/1QN2R1p/5p1P/rb6

#2

9 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Kxf5
      • 2.Be6#
  • Tries
    • 1.Be2?
      • threat
        • 2.Sh6#
      • 1...Kxf5
        • 2.Qe6#
      • 1...Bxf5
        • 2.Rxf2#
      • 1...Rxf5!
    • 1.Qd1?
      • threat
        • 2.Sh6#
      • 1...Kxf5
        • 2.Be6#
      • 1...Rxf5
        • 2.Rxf2#
      • 1...Bxf5!
  • Keys
    • 1.Rxf2!
      • threat
        • 2.Sh6#
      • 1...Kxf5
        • 2.Be6#
      • 1...Rxf5
        • 2.Qd1#
      • 1...Bxf5
        • 2.Be2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(f);OGATEB,S_FLIGHT,XS(G)::B(E)
  • Tries
    • Try
      • B(E);
      • Threat
        • S(G)
      • Vars
        • K(f);OGATEB,S_FLIGHT,XS(G)::QAB1(B)
        • B(b);SBLOCK,XS(G)::B(E)+R(D),XP(c)
      • Refutation
        • R(h);XS(G)
    • Try
      • Q(B);
      • Threat
        • S(G)
      • Vars
        • K(f);OGATEB,S_FLIGHT,XS(G)::B(E)
        • R(h);SBLOCK,XS(G)::QAB(B)+R(D),XP(c)
      • Refutation
        • B(b);XS(G)
  • Actual
    • R(D);XP(c)
    • Threat
      • S(G)
    • Vars
      • K(f);OGATEB,S_FLIGHT,XS(G)::B(E)
      • R(h);SBLOCK,XS(G)::QAB(B)
      • B(b);SBLOCK,XS(G)::B(E)
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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).