MESON Chess Problem Database

Problem Display
PID: 102343 (2B1rN2/2nqR3/7b/5Pp1/3P1k1n/6R1/2KN1pPB/2Q5 w - - 0 1)

Zidek, Alexander

Schach-Aktiv, 1991

2B1rN2/2nqR3/7b/5Pp1/3P1k1n/6R1/2KN1pPB/2Q5

#2

11 + 8

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kxf5
      • 2.Rf7#
    • 1...Qa4+
      • 2.Sb3#
    • 1...Qb5
      • 2.Sb1#
      • 2.Sf1#
      • 2.Sb3#
      • 2.Sf3#
      • 2.Sc4#
      • 2.Se4#
    • 1...Qxf5+
      • 2.Se4#
    • 1...Qc6+
      • 2.Sc4#
    • 1...Qd5
      • 2.Sb1#
      • 2.Sf1#
      • 2.Sb3#
      • 2.Sf3#
      • 2.Sc4#
      • 2.Se4#
    • 1...Qd6
      • 2.Sb1#
      • 2.Sf1#
      • 2.Sb3#
      • 2.Sf3#
      • 2.Sc4#
      • 2.Se4#
    • 1...Qd8
      • 2.Sb1#
      • 2.Sf1#
      • 2.Sb3#
      • 2.Sf3#
      • 2.Sc4#
      • 2.Se4#
    • 1...Sxf5
      • 2.Sg6#
  • Keys
    • 1.Qd1!
      • threat
        • 2.Qg4#
      • 1...Qa4+
        • 2.Rb3#
      • 1...Qxf5+
        • 2.Rd3#
      • 1...Qc6+
        • 2.Rc3#
      • 1...Kxf5
        • 2.Rf7#
      • 1...g4
        • 2.Qxg4#
      • 1...Sf3
        • 2.Qxf3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 3
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • K(b);OGATEB,P-FLIGHT,P_SPINQ(g),XP(H)::R(I)
    • Q(g);CHECK::QAB(A)+S(C)
    • Q(g);CHECK,XP(H)::QAB(A)+S(C)
    • S(c);N_GUARD,SBLOCK,XP(H)::S(K)
  • Actual
    • Q(A);
    • Threat
      • QAR1(A)
    • Vars
      • Q(g);CHECK::B(E)+R(F)
      • Q(g);CHECK,XP(H)::B(E)+R(F)
      • K(b);OGATEB,P-FLIGHT,P_SPINQ(g),XP(H)::R(I)
      • P(d);::QAR1(A),XP(d)
      • S(c);N_GUARD::QAR1(A),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).