MESON Chess Problem Database

Problem Display
PID: 120765 (3r4/4pp2/2Q4R/4k3/1q2N3/2P1K3/8/8 w - - 0 1)

Vogel, Peter

Source?, 0000

3r4/4pp2/2Q4R/4k3/1q2N3/2P1K3/8/8

#2

5 + 5

6490 yacpdb 2009
5454 Near Snap 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qxe4+
      • 2.Qxe4#
    • 1...f5
      • 2.Re6#
      • 2.Qe6#
  • Keys
    • 1.Qe6+!
      • 1...fxe6
        • 2.Rh5#

Anticipated by 65947(1763), 175501(1899)

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • Q(a);CHECK,OGATE,XS(C)::QAR1(D),XQ(a)
  • Actual
    • Q(D);CHECK
    • Vars
      • P(d);SBLOCK,XQ(D)::R(E)
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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).