Sudoku Puzzle #1 - Map Quiz

Fill in the Sudoku grid! Each row, column and 3x3 thick box must contain the digits 1 to 9 exactly once. For the full instructions, see this page.
Key: Each answer is of the format #X where # is a digit and X is a letter. The letter indicates which 3x3 box the digit belongs to according to the key on the right.
Also try my other Puzzles on JetPunk: Word Searches, Codewords and Jigsaw Puzzles.
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Quiz by Stewart
Rate:
Last updated: June 28, 2019
First submittedApril 20, 2019
Times taken335
Rating4.73
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Select Digit
1A
1B
1D
1E
1F
1I
2B
2C
2E
2G
3B
3F
3G
3H
4A
4C
4D
4F
4H
4I
5A
5B
5C
5F
5G
6B
6C
6D
6E
6F
6H
6I
7C
7D
7E
7G
7H
8B
8C
8G
8H
9A
9C
9D
9G
9H
9I
This Digit is:
+3
Level 68
Apr 20, 2019
Note: The time limit is set at 60 minutes to allow people time to do it properly! Since this is a "Map Quiz" format, it's incredibly difficult to cheat on it.
+1
Level 60
May 2, 2019
43:46
+1
Level 45
May 15, 2019
43:26
+1
Level 48
May 17, 2019
50:28 left
+1
Level 44
Mar 19, 2020
49:35 left
+1
Level 51
Jul 5, 2020
Great quiz! Can you increase the width by a little bit? (because the boxes key touches the ads)
+1
Level 42
May 2, 2021
Ah! I did a mistake when two were missing! I lost my concentration at the very end of the quiz...

Excellent adaptation of this mythic puzzle, unique idea, and as always perfect execution: it's an amazing quiz! Nominated!