MESON Chess Problem Database

Problem Display
PID: 227445 (8/8/1K6/n1pk1B2/2N2P2/1R2P3/8/8 w - - 0 1)

Balik, Josef

Prachensky kraj, 1926

8/8/1K6/n1pk1B2/2N2P2/1R2P3/8/8

#2

6 + 3

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Kxc4
      • 2.Be6#
  • Tries
    • 1.Kxa5?
      • 1...Kxc4
        • 2.Be6#
      • 1...Kc6!
    • 1.Be6+?
      • 1...Ke4
        • 2.Sd2#
      • 1...Kxe6!
  • Keys
    • 1.Kc7!
      • threat
        • 2.Sb6#
      • 1...Kxc4
        • 2.Be6#
      • 1...Sxc4
        • 2.Rd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(c);S_FLIGHT,XS(C)::B(E)
  • Tries
    • Try
      • K(F);S_FLIGHT,XS(a)
      • Vars
        • K(c);S_FLIGHT,XS(C)::B(E)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • B(E);CHECK
      • Vars
        • K(c);S_FLIGHT::S(C)
      • Refutation
        • K(c);S_FLIGHT,XB(E)
  • Actual
    • K(F);S_FLIGHT
    • Threat
      • S(C)
    • Vars
      • K(c);S_FLIGHT,XS(C)::B(E)
      • S(a);SBLOCK,XS(C)::R(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).