I'm looking forward to watching your solution. So few people do notation-free solving of these not-so-hard “Hard” puzzles. I did it as a speed run, but I didn't have to explain my reasoning to anybody. Here's my path, just for variety (36 = row 3 column 6; second write-in): 33, 36, 77, 49, 48, 37, 38, 87, 27, 57, 68, 35, 39, 95, 88, 65, 75, 82, 11, 13, 83, 93, 89, 18, 26, 86, 98, 81, 91, 84, 94, 44, 61, 66, 58, 79, 99, 78, 92, 73, 96, 76, 69, 68, 19, 29, 22, 12, 24, 46, 54, 16, 14, 41, 43, 21, 23, 51, 53. And here, as a little gift, is a grid that I created today, especially for you. It's tricky without notation, but perfectly possible: 003 000 007 020 600 003 105 090 004 040 800 000 007 000 300 000 002 060 800 010 509 700 004 080 900 000 700 003000007020600003105090004040800000007000300000002060800010509700004080900000700 HoDoKu rating: Medium 908 Andrew Stuart rating: Tough Grade 113 At least one of the two formats should paste into most apps or programs that accept user-submitted puzzles.