MESON Chess Problem Database

Problem Display
PID: 201732 (8/1n1B3Q/N1Np4/3k4/2p3p1/8/n7/b6K w - - 0 1)

Kovacs, Florian Janos

Nepszava, 1922

8/1n1B3Q/N1Np4/3k4/2p3p1/8/n7/b6K

#2

5 + 7

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Sc3
      • 2.Qf5#
    • 1...Sc5
      • 2.Sc7#
    • 1...c3
      • 2.Qd3#
  • Tries
    • 1.Qd3+?
      • 1...Bd4
        • 2.Qxd4#
      • 1...cxd3!
  • Keys
    • 1.Qc2!
      • threat
        • 2.Qg2#
      • 1...c3
        • 2.Qd3#
      • 1...Sc3
        • 2.Qf5#
      • 1...Sc5
        • 2.Sc7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • S(b);S_CUTB(a)::QAR2(E)
    • S(g);SBLOCK::S(B)
    • P(c);N_GUARD,S_CUTB(a)::QAR2(E)
  • Tries
    • Try
      • Q(E);CHECK
      • Vars
        • B(a);N_GUARD,P_SPINB(a)::QAR1(E),XB(a)
      • Refutation
        • P(c);XQ(E)
  • Actual
    • Q(E);
    • Threat
      • QAB(E)
    • Vars
      • P(c);N_GUARD,S_CUTB(a)::QAR2(E)
      • S(b);S_CUTB(a)::QAR2(E)
      • S(g);SBLOCK::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).