MESON Chess Problem Database

Problem Display
PID: 223030 (8/8/6Np/3BP1p1/6k1/8/3N3P/1Q1K2B1 w - - 0 1)

Kotrc, Jan

Zlata Praha, 1885

8/8/6Np/3BP1p1/6k1/8/3N3P/1Q1K2B1

#2

8 + 3

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...h5
      • 2.Be6#
  • Tries
    • 1.Bg2?
      • 1...h5
        • 2.Qe4#
      • 1...Kh5!
    • 1.Qe4+?
      • 1...Kh3
        • 2.Qg2#
        • 2.Qf3#
      • 1...Kh5!
    • 1.Qf5+?
      • 1...Kh5
        • 2.Bf3#
      • 1...Kxf5!
  • Keys
    • 1.Se4!
      • 1...Kf3
        • 2.Sf6#
      • 1...Kh3
        • 2.Sf2#
      • 1...Kf5
        • 2.Sf2#
        • 2.Sf6#
      • 1...Kh5
        • 2.Sf6#
      • 1...h5
        • 2.Sf2#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • P(c);SBLOCK::B(F)
  • Tries
    • Try
      • B(F);
      • Vars
        • P(c);SBLOCK::QAR2(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);CHECK
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);P_SPINP(b),S_FLIGHT::B(F)
      • Refutation
        • K(a);S_FLIGHT,XQ(A)
  • Actual
    • S(D);
    • Vars
      • K(a);S_FLIGHT::B(F)+S(D)
      • K(a);S_FLIGHT::S(D)
      • P(c);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).