MESON Chess Problem Database

Problem Display
PID: 107305 (3B1Q2/6pK/4pN1R/5k2/3q1p2/5P2/b7/8 w - - 0 1)

Zilahi, Zoltan

Express Wieczorny, 1951

3B1Q2/6pK/4pN1R/5k2/3q1p2/5P2/b7/8

#2

6 + 6

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kg5
      • 2.Se4#
      • 2.Rh5#
    • 1...Qg1
      • 2.Sg4#
      • 2.Sd7#
    • 1...Qf2
      • 2.Sg4#
      • 2.Sd7#
    • 1...Qe3
      • 2.Sg4#
      • 2.Sd7#
    • 1...Qb6
      • 2.Sg4#
      • 2.Sd7#
    • 1...Qa7
      • 2.Sd7#
    • 1...Qd1
      • 2.Sg4#
      • 2.Sd7#
    • 1...Qd2
      • 2.Sg4#
      • 2.Sd7#
    • 1...Qd3
      • 2.Sg4#
      • 2.Sd7#
    • 1...Qa4
      • 2.Sg4#
      • 2.Sd7#
    • 1...Qc4
      • 2.Sg4#
      • 2.Sd7#
    • 1...Qe4
      • 2.Sg4#
      • 2.Sd7#
    • 1...Qd5
      • 2.Sg4#
      • 2.Sd7#
    • 1...Qd7
      • 2.Sxd7#
    • 1...e5
      • 2.Sd5#
    • 1...gxf6
      • 2.Rh5#
  • Keys
    • 1.Kxg7!
      • threat
        • 2.Rh5#
      • 1...Qg1+
        • 2.Sg4#
      • 1...Qxf6+
        • 2.Qxf6#
      • 1...Qa7+
        • 2.Sd7#
      • 1...Qd7+
        • 2.Sxd7#
      • 1...Ke5
        • 2.Rh5#
      • 1...Kg5
        • 2.Rh5#
      • 1...e5
        • 2.Sd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • Q(b);N_GUARD::QAR(F)+S(B)
    • Q(b);N_GUARD::QAR(F)+S(B),XQ(b)
    • P(e);SBLOCK,S_CUTQ(b)::QAR(F)+S(B)
    • P(f);N_GUARD,P_SPINP(f),XS(B)::R(C)
  • Actual
    • K(D);P-FLIGHT,P_SPINS(B),XP(f)
    • Threat
      • R(C)
    • Vars
      • Q(b);CHECK,N_PINS(B)::QAR(F)+S(B)
      • Q(b);CHECK,OGATE,P_SPINQ(b),XS(B)::QAR1(F),XQ(b)
      • Q(b);CHECK,N_PINS(B)::QAR(F)+S(B),XQ(b)
      • K(d);N_PINS(B),P-FLIGHT::R(C)
      • K(d);P-FLIGHT::R1(C)
      • P(e);N_PINS(B),SBLOCK::QAR(F)+S(B)
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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).