The New Sudoku Players' Forum

[Hajime]

Some heart puzzles for your Valentine... (all with diagonals)

Code: Select all

.........
..17.86..
.9..1..4.
4.......1
7.......3
.1.....6.
..6...7..
...6.2...
....9....

...........17.86...9..1..4.4.......17.......3.1.....6...6...7.....6.2.......9.... ED=2.9
basic methods needed

.........
..49.68..
.3..1..4.
4.......1
2.......3
.1.....6.
..6...7..
...8.2...
....9....

...........49.68...3..1..4.4.......12.......3.1.....6...6...7.....8.2.......9.... ED=6.6
minimal, Turbot-fish

.........
..13.78..
.7..5..4.
4.......1
7.......3
.1.....6.
..6...7..
...8.2...
....9....

...........13.78...7..5..4.4.......17.......3.1.....6...6...7.....8.2.......9.... ED=10.3
minimal, lots of (dynamic) forcing chains



[philvo]

Hard to break the third heart !
phil

[m_b_metcalf]

Offering one's sweetheart a little diamond is allso not inappropriate:

Code: Select all

 . . . . . . . . .
 . . 1 2 . 3 4 . .
 . 3 . . 5 . . 6 .
 6 . . . . . . . 5
 3 . . . . . . . 4
 . 5 . . . . . 2 .
 . . 2 . . . 7 . .
 . . . 4 . 7 . . .
 . . . . 8 . . . .   ED=2.9/2.9/2.9