Nice little puzzle. Pedja lists it as a Level 4. I would rate it at Apprentice level, "Barely Hard". Lots of locked candidates and N/H sets, but no X-wings or higher techniques.
Code:
45.....727...3..45..8...9...9..76.3.5....81.7.2.5.1.....2.......7..8..6.64.......
35.....8969..7...1..7...4...2.95..6.5.37....4...4.1.2.......6...4..2..7........48
..........6..8..4.............5.1...8.5...9.1...2.8.............7..5..1..........
46........1..2..7...5.......7.2.1...3....61.7.8..74.6...2...3..7...1..9515.....26
.......28.1..4..6.......3.....7.5.9.7.86....5.5.42..7...4...9..68..7...292.....36
35.....8969..7...1..7...4...2.95..6.5.37....4...4.1.2.......6...4..2..7........48
..........6..8..4.............5.1...8.5...9.1...2.8.............7..5..1..........
46........1..2..7...5.......7.2.1...3....61.7.8..74.6...2...3..7...1..9515.....26
.......28.1..4..6.......3.....7.5.9.7.86....5.5.42..7...4...9..68..7...292.....36