MESON Chess Problem Database

Problem Display
PID: 30928 (1qb2Rr1/5P2/2P1kppr/Qp2PNp1/5b2/3n1B2/8/1K3R2 w - - 0 1)

Zilahi, Zoltan

1st Prize, Gavrilov MT, 1948

1qb2Rr1/5P2/2P1kppr/Qp2PNp1/5b2/3n1B2/8/1K3R2

#2

9 + 11

461 Schach-Express 1948
3105 FIDE Album (1945-1955) 1964

SOLUTION

  • SOUND
  • Sets
    • 1...fxe5
      • 2.fxg8Q#
      • 2.fxg8B#
  • Tries
    • 1.Sd4+?
      • 1...Ke7
        • 2.Qd8#
      • 1...Kxe5!
    • 1.Qa2+?
      • 1...Kxe5
        • 2.Qd5#
      • 1...Kxf5!
    • 1.fxg8Q+?
      • 1...Kxe5
        • 2.Qd5#
      • 1...Kxf5!
  • Keys
    • 1.Qd8!
      • threat
        • 2.Qxf6#
      • 1...Kxe5
        • 2.Qd5#
      • 1...Kxf5
        • 2.Qxf6#
      • 1...Qxe5
        • 2.Qxc8#
      • 1...Bxe5
        • 2.Bd5#
      • 1...Sxe5
        • 2.Sd4#
      • 1...fxe5
        • 2.fxg8Q#
        • 2.fxg8B#
      • 1...gxf5
        • 2.Qe8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
    • P(f);SBLOCK,XP(E)::PXR(k)=Q
  • Tries
    • Try
      • S(F);CHECK
      • Vars
        • K(e);P-FLIGHT::QAB1(D)
      • Refutation
        • K(e);P-FLIGHT,P_SPINP(c),XP(E)
    • Try
      • Q(D);CHECK
      • Vars
        • K(e);P-FLIGHT,XP(E)::QAR1(D)
      • Refutation
        • K(e);S_FLIGHT,XS(F)
    • Try
      • P(H);CHECK,XR(k)
      • Vars
        • K(e);OGATE,P-FLIGHT,P_SPINP(c),XP(E)::QAR1(H)
      • Refutation
        • K(e);P_SPINP(f),S_FLIGHT,XS(F)
  • Actual
    • Q(D);
    • Threat
      • QAR1(D),XP(f)
    • Vars
      • K(e);P-FLIGHT,XP(E)::QAR1(D)
      • K(e);S_FLIGHT,XS(F)::QAR1(D),XP(f)
      • Q(i);N_GUARD,SBLOCK,XP(E)::QAB(D),XB(j)
      • B(b);SBLOCK,XP(E)::B(C)
      • S(a);SBLOCK,XP(E)::S(F)
      • P(f);SBLOCK,XP(E)::PXR(k)=Q
      • P(g);SBLOCK,XS(F)::QAR2(D)
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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).