Diagonal cross 5.6
Here is the diagonal cross pattern:
- Code: Select all
+-------+-------+-------+
! . . X ! . . . ! X . . !
! . X . ! X . X ! . X . !
! X . . ! . X . ! . . X !
+-------+-------+-------+
! . X . ! . . . ! . X . !
! . . X ! . . . ! X . . !
! . X . ! . . . ! . X . !
+-------+-------+-------+
! X . . ! . X . ! . . X !
! . X . ! X . X ! . X . !
! . . X ! . . . ! X . . !
+-------+-------+-------+
..X...X...X.X.X.X.X...X...X.X.....X...X...X...X.....X.X...X...X.X.X.X.X...X...X..
24 givens
with minlex form (computed with Mathimagics software):
.....X..X.....X..X....X..X.....X..X...XX..X..XX...X..X....X..X...XX..X..XX...X..X
Puzzles with this very symmetric pattern must have been proposed already, but I couldn't find it in the Patterns Game (it may have too much symmetry).
Anyway, here is a rather easy puzzle with this pattern:
- Code: Select all
+-------+-------+-------+
! . . 5 ! . . . ! 2 . . !
! . 8 . ! 6 . 5 ! . 3 . !
! 3 . . ! . 1 . ! . . 9 !
+-------+-------+-------+
! . 9 . ! . . . ! . 1 . !
! . . 4 ! . . . ! 7 . . !
! . 7 . ! . . . ! . 8 . !
+-------+-------+-------+
! 4 . . ! . 5 . ! . . 7 !
! . 1 . ! 2 . 8 ! . 9 . !
! . . 2 ! . . . ! 6 . . !
+-------+-------+-------+
..5...2...8.6.5.3.3...1...9.9.....1...4...7...7.....8.4...5...7.1.2.8.9...2...6.. # 298 FNTY C24.m/S8.f
24 givens, SER = 5.6
For a much harder puzzle with the same pattern, see here: http://forum.enjoysudoku.com/diagonal-cross-9-1-t38789.html
