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Hard Sudoku – Sheet 2

Hard: very few clues, for regular solvers.

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Puzzle 1

4
3281
1423
5389
52
6917
6784
4917
5

Puzzle 2

9617
4
14975
4697
1
6281
68529
2
4135

Puzzle 3

34
28163
391
65
2981
41
623
21479
85

Puzzle 4

9178
326
64
154
71
836
81
234
4836

Puzzle 5

4971
8
2816
3857
5614
8926
7
2458

Puzzle 6

7194
2
2851
485
1462
675
3529
5
8231
Show the answers

Puzzle 1

286173594
934625817
751489236
425367189
178592643
693841752
367958421
849216375
512734968

Puzzle 2

394526178
572138964
168497532
415263897
983714625
627985341
736852419
259641783
841379256

Puzzle 3

961374258
728516349
435928167
817639524
293457681
654281973
146792835
582143796
379865412

Puzzle 4

269174538
314895267
857632941
135467829
678329415
942518376
586241793
723956184
491783652

Puzzle 5

845692713
617435298
932781465
391248576
478563129
256179834
583927641
769814352
124356987

Puzzle 6

268713954
513964728
794285613
329146875
145897362
687352491
436529187
951478236
872631549

How to play sudoku

Fill the grid so every row, every column and every 3x3 box contains the numbers 1 to 9 with no repeats. Start with the rows and boxes that already have the most numbers.