MESON Chess Problem Database

Problem Display
PID: 221619 (5n2/1K6/N7/pk2p3/2n1N1Q1/8/P7/q7 w - - 0 1)

Chocolous, Jiri

Deutsche Schachzeitung, 1883

5n2/1K6/N7/pk2p3/2n1N1Q1/8/P7/q7

#2

5 + 6

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Qc3
      • 2.Sxc3#
    • 1...Qb1
      • 2.Sc3#
    • 1...Qd1
      • 2.Sc3#
    • 1...Qf1
      • 2.Sc3#
    • 1...Qg1
      • 2.Sc3#
    • 1...Qxa2
      • 2.Sc3#
    • 1...Sb2
      • 2.Sc3#
      • 2.Sd6#
    • 1...Sd2
      • 2.Sd6#
    • 1...Sa3
      • 2.Sd6#
    • 1...Se3
      • 2.Sd6#
    • 1...Sb6
      • 2.Sd6#
    • 1...Sd6+
      • 2.Sxd6#
    • 1...Sg6
      • 2.Qd7#
    • 1...Sd7
      • 2.Qxd7#
    • 1...Sh7
      • 2.Qd7#
  • Tries
    • 1.a4+?
      • 1...Qxa4
        • 2.Sc3#
      • 1...Kxa4!
  • Keys
    • 1.Qd1!
      • threat
        • 2.Qb3#
      • 1...Sd6+
        • 2.Sxd6#
      • 1...Qxd1
        • 2.Sc3#
      • 1...Qxa2
        • 2.Sc3#
      • 1...Sd2
        • 2.Sd6#
      • 1...a4
        • 2.Qd5#
      • 1...Qb2
        • 2.a4#
      • 1...Qc3
        • 2.Sxc3#
        • 2.a4#
      • 1...Qb1
        • 2.Sc3#
        • 2.a4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 10
  • Sets
    • Q(a);N_GUARD::S(B),XQ(a)
    • Q(a);N_GUARD::S(B)
    • Q(a);N_GUARD,XP(A)::S(B)
    • S(b);N_GUARD::S(B)
    • S(b);CHECK,N_GUARD::S(B),XS(b)
    • S(f);N_GUARD::QAB(C)
    • S(f);N_GUARD::QAB(C),XS(f)
  • Tries
    • Try
      • P(A);CHECK
      • Vars
        • Q(a);XP(A)::S(B)
      • Refutation
        • K(d);S_FLIGHT,XP(A)
  • Actual
    • Q(C);
    • Threat
      • QAR2(C)
    • Vars
      • S(b);CHECK,N_GUARD::S(B),XS(b)
      • Q(a);N_GUARD,XQ(C)::S(B)
      • Q(a);N_GUARD,XP(A)::S(B)
      • S(b);N_GUARD::S(B)
      • P(c);SBLOCK::QAR2(C)
      • Q(a);N_GUARD::P(A)
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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).