This puzzle was listed as "Easy". I thought that perhaps it might be too easy, so I tried it completely without pencil marks. It took me much longer than expected that way, but I suspect that with pencil marks it would have been a no-brainer. I don't think I'll try their harder puzzles without pencil marks just yet, though.
Code:
003000200020408030800090004050601020008000600070804010100070000040102000009000000
006000200030402080800010004020107090009000800080509040000070005000208070000000100
000000000000000000000060000000501000009000600000306000000070000000000000000000000
008000000040501000600020000090103070005000100010608090500070006020305010006000200
000000400000905070000060009070501090003000600020806010700020005090604030004000100
006000200030402080800010004020107090009000800080509040000070005000208070000000100
000000000000000000000060000000501000009000600000306000000070000000000000000000000
008000000040501000600020000090103070005000100010608090500070006020305010006000200
000000400000905070000060009070501090003000600020806010700020005090604030004000100