MESON Chess Problem Database

Problem Display
PID: 272585 (1b6/5P2/1r2PpK1/6N1/3BPkPR/3p1Pn1/3P1R1P/5b2 w - - 0 1)

Labai, Zoltan

Svitek, Miroslav

Variantim, 2023

1b6/5P2/1r2PpK1/6N1/3BPkPR/3p1Pn1/3P1R1P/5b2

#2

12 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Rxe6
      • 2.Sxe6#
    • 1...Be2
      • 2.Sh3#
    • 1...Bh3
      • 2.Sxh3#
    • 1...Be5
      • 2.Be3#
    • 1...Sxe4
      • 2.fxe4#
    • 1...Sf5
      • 2.gxf5#
    • 1...Sh5
      • 2.gxh5#
    • 1...f5
      • 2.gxf5#
  • Tries
    • 1.Sh7?
      • threat
        • 2.g5#
      • 1...Sf5
        • 2.gxf5#
      • 1...Bh3!
  • Keys
    • 1.Kxf6!
      • threat
        • 2.Be3#
      • 1...Rxe6+
        • 2.Sxe6#
      • 1...Be5+
        • 2.Bxe5#
      • 1...Sxe4+
        • 2.fxe4#
      • 1...Sh5+
        • 2.gxh5#
      • 1...Sf5
        • 2.gxf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 0
    • REMOVED MATES = 3
  • Sets
    • R(e);XP(J)::S(I),XR(e)
    • B(a);N_GUARD::S(I)
    • B(a);N_GUARD::S(I),XB(a)
    • B(g);SBLOCK::B(E)
    • S(c);OGATE,XP(F)::R(B)+P(D),XS(c)
    • S(c);OGATE::R(H)+P(G),XS(c)
    • P(f);OGATE,P_PINP(J)::R(H)+P(G),XP(f)
  • Tries
    • Try
      • S(I);
      • Threat
        • R(H)+P(G)
      • Vars
        • S(c);OGATE::R(H)+P(G),XS(c)
      • Refutation
        • B(a);
  • Actual
    • K(K);P-FLIGHT,P_SPINP(J),XP(f)
    • Threat
      • B(E)
    • Vars
      • R(e);CHECK,XP(J)::S(I),XR(e)
      • B(g);CHECK,N_GUARD::B(E),XB(g)
      • S(c);CHECK,OGATE,XP(F)::R(B)+P(D),XS(c)
      • S(c);CHECK,OGATE::R(H)+P(G),XS(c)
      • S(c);OGATE::R(H)+P(G),XS(c)
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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).