MESON Chess Problem Database

Problem Display
PID: 231119 (1b1k4/2NP4/1P1K4/4P3/8/8/8/8 w - - 0 1)

Szentgyorgy, Erno

Magyar Sakkvilag, 1927

1b1k4/2NP4/1P1K4/4P3/8/8/8/8

#2

5 + 2

6490 yacpdb 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Ba7
      • 2.Se6#
    • 1...Bxc7+
      • 2.bxc7#
  • Tries
    • 1.b7?
      • 1...Ba7
        • 2.Se6#
      • 1...Bxc7+!
  • Keys
    • 1.e6!
      • threat
        • 2.e7#
      • 1...Bxc7+
        • 2.bxc7#

FEATURES

  • Static
    • TYPE = BLOCK_THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 1
  • Sets
    • B(a);N_PINS(D)::S(D)
    • B(a);CHECK,OGATE,XS(D)::P(B),XB(a)
  • Tries
    • Try
      • P(B);
      • Vars
        • B(a);N_PINS(D)::S(D)
      • Refutation
        • B(a);CHECK,XS(D)
  • Actual
    • P(A);
    • Threat
      • P(A)
    • Vars
      • B(a);CHECK,OGATE,XS(D)::P(B),XB(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).