MESON Chess Problem Database

Problem Display
PID: 33334 (bQ5B/K1NNpr2/B1p1pp2/p7/1P1pk3/1pP2RP1/5pP1/1q1n4 w - - 0 1)

Zidek, Alexander

Schach-Echo, 1987

bQ5B/K1NNpr2/B1p1pp2/p7/1P1pk3/1pP2RP1/5pP1/1q1n4

#2

11 + 13

SOLUTION

  • SOUND
  • Sets
    • 1...Qa2
      • 2.Bd3#
    • 1...Qd3
      • 2.Bxd3#
    • 1...Qa1
      • 2.Bd3#
    • 1...Qc1
      • 2.Bd3#
    • 1...Qb2
      • 2.Bd3#
    • 1...Se3
      • 2.Rf4#
    • 1...c5
      • 2.Qxa8#
    • 1...e5
      • 2.Sc5#
    • 1...f5
      • 2.Sc5#
  • Tries
    • 1.Qb6?
      • threat
        • 2.Qxd4#
      • 1...dxc3
        • 2.Rf4#
      • 1...Qd3
        • 2.Bxd3#
      • 1...d3
        • 2.Rf4#
        • 2.Qd4#
      • 1...c5
        • 2.Qxe6#
      • 1...e5
        • 2.Sc5#
      • 1...Sxc3!
  • Keys
    • 1.Qg8!
      • threat
        • 2.Qg4#
      • 1...Qc1
        • 2.Bd3#
      • 1...Rg7
        • 2.Qxe6#
      • 1...Se3
        • 2.Rf4#
      • 1...f5
        • 2.Sc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 6
  • Sets
    • Q(a);N_GUARD::B(F)
    • Q(a);N_GUARD::B(F),XQ(a)
    • S(b);SBLOCK::R1(C)
    • P(h);OGATEB::QAB(J),XB(m)
    • P(i);SBLOCK::S(I)
    • P(j);::S(I)
  • Tries
    • Try
      • Q(J);
      • Threat
        • QAR1(J),XP(e)
      • Vars
        • P(e);XP(B)::R1(C)
        • Q(a);N_GUARD::B(F),XQ(a)
        • P(h);OGATE::QAR2(J),XP(i)
        • P(i);SBLOCK::S(I)
      • Refutation
        • S(b);XP(B)
  • Actual
    • Q(J);
    • Threat
      • QAR2(J)
    • Vars
      • Q(a);N_GUARD::B(F)
      • R(l);OGATE::QAR2(J),XP(i)
      • S(b);SBLOCK::R1(C)
      • P(j);::S(I)
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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).