MESON Chess Problem Database

Problem Display
PID: 120754 (8/8/2b1pNP1/2P1k1K1/2Pqp1p1/8/5P1n/4R3 w - - 0 1)

Vogel, Peter

Source?, 0000

8/8/2b1pNP1/2P1k1K1/2Pqp1p1/8/5P1n/4R3

#2

7 + 7

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Bd5
      • 2.Sd7#
    • 1...Sf1
      • 2.Sxg4#
    • 1...g3
      • 2.f4#
  • Keys
    • 1.Sxg4+!
      • 1...Sxg4
        • 2.f4#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 3
  • Sets
    • B(f);N_GUARD,S_CUTQ(b)::S(F)
    • S(a);N_GUARD::S(F),XP(d)
    • P(d);N_GUARD::P(B)
  • Actual
    • S(F);CHECK,XP(d)
    • Vars
      • S(a);XS(F)::P(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).