MESON Chess Problem Database

Problem Display
PID: 9553 (4q3/p7/3p4/3Np3/kP2n3/8/1Q6/K7 w - - 0 1)

Mazel, Frantisek

Lidove noviny, 1905

4q3/p7/3p4/3Np3/kP2n3/8/1Q6/K7

#2

4 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Qb5
      • 2.Qa2#
    • 1...Sd2
      • 2.Sc3#
    • 1...Sf2
      • 2.Sc3#
    • 1...Sc3
      • 2.Sxc3#
    • 1...Sg3
      • 2.Sc3#
    • 1...Sc5
      • 2.Sc3#
    • 1...Sg5
      • 2.Sc3#
    • 1...Sf6
      • 2.Sc3#
  • Tries
    • 1.Qc2+?
      • 1...Ka3
        • 2.Qa2#
      • 1...Kb5!
  • Keys
    • 1.b5!
      • threat
        • 2.Qb4#
      • 1...Ka5
        • 2.Qb4#
      • 1...Qxb5
        • 2.Qa2#
      • 1...a5
        • 2.Sb6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 7
  • Sets
    • Q(f);SBLOCK::QAR2(B)
    • S(b);N_GUARD::S(D)
    • S(b);N_GUARD::S(D),XS(b)
  • Tries
    • Try
      • Q(B);CHECK
      • Vars
        • K(a);P-FLIGHT::QAR1(B)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • P(C);
    • Threat
      • QAR1(B)
    • Vars
      • K(a);P-FLIGHT::QAB1(B)
      • Q(f);SBLOCK,XP(C)::QAR2(B)
      • P(e);N_GUARD,SBLOCK::S(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).