3 7

4 3 7 1 3 8
9 8 7 2
9 5 1 5 2
7 9 5 9 8
6 1 8 7 4 3 5 6
8 6 1 9 7 3
5 6 1 5 2
7 2 5 4 1 4
#169501 Difficulty: harder #191359 Difficulty: harder

2 5 4 7 2
8 2 4
3 4 6 3
6 5 1 7 6 4 5
9 3 4 8 1 2
3 6 5 2 7 5 6
8 2 7 6 2 9 8 7
3 7 8 1 5
5 1 7 1
#85760 Difficulty: harder #166677 Difficulty: harder

8 7 3 9 4
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4 2 3
6 2 7 6 5
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5 4 6 1
1 7 7 8
7 2 6 5 3 7 3 4 5
9 1 8 5 3 9
9 8 1 2 6
4 3 5 7 1
#178684 Difficulty: harder #222241 Difficulty: harder
 7 8 6 8 3 7
5 1
2 9 5 1 2 1 8
8 3 3 5
7 4 8 7
6 2 1 9 6 9 2
4 1 7 9 2 4 3
6 9 8
5 3 2 7 7 8 1
#92594 Difficulty: harder #36433 Difficulty: harder

1 5 1 4 2
9 6 1 6 2 9
5 8 1
5 9 3 7 9 1
6 3 5 7 5 8 9 4
8 1 2 7
6 6 3
4 6 3 1 5 6
2 9 8 8 7 1
#63282 Difficulty: harder #51136 Difficulty: harder

4 2 8 1 6 3 8 5
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5 8 9 5 7 3
1 9 2
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7 9 3 1 5 9 8
1 6 7 7 3 6
6 2 9 2 6 4
7 6 5 8 5 8 7
9 4
3 7 2 7 1 4
#106017 Difficulty: harder #75756 Difficulty: harder
 9 1 7 6 5
5 9 5 4 9
7 6 4 7 2
8 4 8 7
8 3 1 5 9 3 5 1
5 4 2 6 8 2
3 6 1 2 3
2 1 4
7 8 4 3 6 6 9
#31358 Difficulty: harder #9206 Difficulty: harder

8 9 6 4 8
4 8 9 1
9 1 3 6
8 6 7 4 9
7 5 3 1 6 7
1 2 2 9 3 5
2 5 3 1 7 3 2 5
7 5 3
5 1 6 8 6 8 7
#186088 Difficulty: harder #229590 Difficulty: harder

4 8
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1 3 5 2
9 8 5 2 8 5 4
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8 3 7
2 7 9 4 5 4
6 5 2 2 7 6 5
1 8 5 3 8 9
2 9 6 9 7 1 3
4 6 1 7
#130494 Difficulty: harder #111440 Difficulty: harder
 7 1 4
2 1 6 5 8
9 5 8 2 1 9
5 1 3 2 8 1
6 6
2 5 6 9 5 3 7
7 4
3 1 9 5 2 1 6 9 2
4 5 9 3 3 4 2 7 5
#56236 Difficulty: harder #90471 Difficulty: harder

2 7 1 5 3
4 1 9 3 4
2 6 5 8 7 2
4 7 9 2 1 8
6 8 5 2 9 7 5 3
3 1 4 1 8 7
9 6 6 8
9 3 4 7 5 4
3 8 5
#98667 Difficulty: harder #87694 Difficulty: harder

9 2 1 2
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7 5 3 1 8
4 4 7 5
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3 7 4 8 7 4 2
2 9 3
8 1 6 5 6 9
1 2 3 5 2 6
8 6 2 9 6 7
5 4 3 5 8
#166412 Difficulty: harder #227277 Difficulty: harder
 8 7 8 5
1 6 3 9 1
6 4 5
8 9 4 1 2 3
3 8 2 9 7 4 6
2 5 6 5 6 1 7
7 8 9 5 4
5 9 8 5 6 9
4 8 2 5 6 7 4
#79012 Difficulty: harder #173375 Difficulty: harder

6 8 9 3
3 6 4 1
2 5 1 9 6 2 5
5 7 1 7 9
3 2 4 4 5
7 6 9 8 9 4
8
4 7 1 2 5 7
1 5 4 9 2 5 3 2 8 1
#46042 Difficulty: harder #191956 Difficulty: harder

2 4 8
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8 7 2 8
4 1 8 9 3 5 4
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8 5 6 3 7 6 3 1
2 1 6
3 7 5 2 4 8
5 1 6
6 8 3 5 4 6 7
4 9 1 4 9 1
#209916 Difficulty: harder #178076 Difficulty: harder
 9 4 1 9 5
2 6 4 7
1 5 7 2 7 4
6 1 9 4
2 6 9 8 3 2 8
8 5 1 3
8 7 2 5 3 7 5
3 1 1 6
4 8 9 4 8 6
#89655 Difficulty: harder #14574 Difficulty: harder

5 2 3 1 4
9 3 1 7 4 3 6
4 6 9 2
8 2 3 1 7
7 9 1 9
5 2 3 8 5
9 4 1 9 6 4
6 7 2 7
8 3 7 5 3 9
#12155 Difficulty: harder #94930 Difficulty: harder

7 4 6 5 3
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3 6 4 5 9 7
5 1 2 7 9 6
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4 8 4 6 2
9 1 7
4 7 8 5 2 8
5 7 3 1
4 9 6 2 1 6 8
1 7 8 5 6 3 4
#82595 Difficulty: harder #15626 Difficulty: harder
 9 5 9
6 8
9 4 8 1 7 5 8 3
4 7 3 6 7
4 8 3 5 1 9 3
1 7 3 5 2
8 9 5 6 2 3 1 7
2 8 4 6 4 2 8
7 1 9 9 6
#134982 Difficulty: harder #210875 Difficulty: harder

7 8 2 6 2 7 5 3
5 9 7 6
1 2 7 1 9
1 3 5
9 4 1 5 4 7 2
2 3 3 2 1
7 2 4 9 6 8 3
4 3 8 5 7 1
6 2 6
#52411 Difficulty: harder #70960 Difficulty: harder

6 8 8 4 5
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3
8 3 5 7 1 8 1 2
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8 2 1 7 9
7 4 6 5 7
8 6 4 5 2 4 6 5
3 7 5 3 2
8 4 5 6 8
2 6 1 6 9 5 3 4
#111696 Difficulty: harder #136845 Difficulty: harder
 9 2
4 6 7 8
9 8 2 8 3 4 2
6 2 8 7 9 3
5 1 6 3 5 2
8 4 1 8 4 9
1 5 9 4
1 3 9 8 5 4 9 6
4 2 6 5 9 6 2
#92052 Difficulty: harder #227419 Difficulty: harder

4 1 9 6 8
7 8 8 5 4 7
3 5 1
3 4 2 8 9 5 4
4 5 7 3 6
6 5 9 7 1 8
6 3 5 7 2 5 1 3
6
2 1 6 4 4 2
#189232 Difficulty: harder #3927 Difficulty: harder

3 1 8 6 4 8
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9 6
7 4 2 3
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6 3 5 4
9 5 7 1
7 1 5 8 1 2
9 5 8 2 3 2
4 8 1 9 8 7
1 4 9 3 7 5 6 4
#138021 Difficulty: harder #174434 Difficulty: harder
 6 4 4 2
5 1 7 6
4 8 7 5 7 9 4
3 7 8 9 2
2 4 3 9
6 3 9 5 8 6
1 3 4 2 5
5 6 1 4
2 3 1 8 3 6 9 8 7
#151401 Difficulty: harder #205972 Difficulty: harder

9 6 9 5
3 5 3 8 4
1 5 7 2 1
9 7 8 5 8 7
2 4 6 2
2 8 4 1 8 3 6
1 6 2 4
8 2 6 1
2 3 8 9 5
#14662 Difficulty: harder #200363 Difficulty: harder

1 3 4
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4 2 1 3 8 5 2
2 4 8 1 9 8
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2 7 6 4 9 5
7 9 8 1 3 6
9 6 7 2
3 1 2 9 7
6 3 4 2
8 9 3 1
#180215 Difficulty: harder #14430 Difficulty: harder
 2 5 6 9 3
7 6 7 5
2 6 3 9 1 3
2 7 1
1 7 9 3 4
5 8 2 8 7 2
5 8 3 1
9 7 1 3 6 8 4
4 6 2 9
#38271 Difficulty: harder #10253 Difficulty: harder

2 3 8
8 5 6 3
6 9 1 5 9
6 3 8 5 3 4
1 4 2 2 5
1 8 6
3 5 4 2 8 9
7 6 8 8 7 9 1 6
3 8 5 7 1 4 6
#66823 Difficulty: harder #58908 Difficulty: harder

4 9 6
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6 3 1
5 9 1 3 8 3 5 4
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3 7 4 5 9 6 7
8 7 4
2 9 8 3 7 2 4
7 1 2 9 8 8 5 7
9 8
7 2 1 2 4 6
#108832 Difficulty: harder #52206 Difficulty: harder
 3 1 6 7 2
2 8 5 3
6 1 4 6 1 7
9 2 9 1 8 7 4
6 1 3 7 2 7
5 1 4 8 5
1 9 3 4 8 6
5 8 2 3
4 6 3 4 5
#1910 Difficulty: harder #71249 Difficulty: harder

5 8 3 1 8
9 8 9 1 4
7 2 5 6
8 7 4 8 9
5 4 6 1 6 2 1
3 5 5 7
4 9 2 4 3
1 5 8 7 2
6 7 3 2 8 7
#223742 Difficulty: harder #40169 Difficulty: harder

9 7
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3 8 1 6 5 2
4 3 5 3 9 5
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1 2 6 5 6
8 5 9 6 8 4 1
6 9 7 4 7 2
7 1 7 6
5 3 2 8
5 8 6 7 4 3 2
#214068 Difficulty: harder #118521 Difficulty: harder
 6 3 8 6 1 4
8 6 1 2 3
7 1 5 3
8 5 7 8 3 7
8 2 9 2
7 2 6 4 5 6
3 1 4 7 6 1
6 2 4 1 8
7 6 4 5 7 2
#141704 Difficulty: harder #178388 Difficulty: harder

4 3 5 2
5 3 9 1 6 5 7
1 9 9 1
4 6 5 4
2 5 3 2 8
9 1 6 9
2 4 6 8 9 2 7
6 8 6 3
5 7 1 2 7 8 4 9 5
#133362 Difficulty: harder #217449 Difficulty: harder

6 9 8
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4 5
2 5 9 4 3
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4 5 3 7 4 1 6
6 7 5 8
7 3 8 6 3 5
6 9 7 3
3 2 1 8 6 2 8 4
1 3 5 8 5 1 9 2 6
#96035 Difficulty: harder #78687 Difficulty: harder
 8 2 5 1 3
3 5 2 7 6
9 6 8 2 4
4 9 1 9 7
7 1 6 3 5 8 7 9
9 3 4 3
1 4 3 6 5
9 8 7 5 9 8 2
2 5 6 5
#177607 Difficulty: harder #223528 Difficulty: harder

1 5 2
3 8 6 9 5
5 7 5 9 1 6
8 1 7 3
1 9 5 2 6 6 1 4 7 3
5 3 4 9 1 8 6 2
9 1 6 4 7 3 6
2 6 4
5 2 6 1 4
#206035 Difficulty: harder #62425 Difficulty: harder

4 8
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8 5 9 6 1 7
3 1 7 9 1 6
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4 8 7 5 8
1 2 8
8 1 2 7 6 1 9
8 5 6 1 4 5 2 3
7 1 3 4
9 5 6 5 3 1 2
#80265 Difficulty: harder #96937 Difficulty: harder
 9 5 1 4 5
3 1 6 4
1 2 5 3 7
4 2 1 9 6 5
9 3 8 2 7
5 4 8 2
6 7 7 3 9
8 2 8 6 7 2
6 8 3 9 9 3 4
#63722 Difficulty: harder #98017 Difficulty: harder

4 1 3 3 8 6
1 2 1
5 8 9 8
8 7 2 8
3 6 8 1 2
5 3 4 1 5 4 3
3 9 5 4 4 1 6
4 2 6 7 1
8 7 9 5 8 3
#174136 Difficulty: harder #75728 Difficulty: harder

4 9 1 5 9
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2 2 8
7 3 4 4 6 3
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1 8 7 4 6
9 4 2 8 7 9 4 1
6 2
2 5 5 8 4
7 1 3 7 5
9 4 6 1 8 4 7 3
#91730 Difficulty: harder #20726 Difficulty: harder
 5 9
1 4 7
7 1 3 8 7 1 9
4 2 7 8 5
3 9 8 6 6 1 9
1 5 7 9 6 1
7 2 6 2 8 1
4 9 8 1 2 3 6
1 9 5 3 4
#124767 Difficulty: harder #104373 Difficulty: harder

5 6 5 2
8 9 1 3 7
6 8 8 1
6 9 3
1 2 4 8 3 4 6 7
5 4 7 2
8 3 6 1 8 2 5
3 5 2 7 6 8
2 9 7 4 5 4
#215214 Difficulty: harder #75207 Difficulty: harder

8 9 7 2
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8 2 5 6 5 1 7
3 2 7 4 8
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6 1 2 3 6
4 5 7 2 4
3 7 6 1 8 7 6 3
9 6 3 3
7 4 5 3 9 8
5 1 4 4
#159410 Difficulty: harder #57923 Difficulty: harder
 9 5 5 8
1 2 3
7 8 3 2 9 2
2 8 7 4 2 3 1 6 4
5 1
7 1 9 7 5
7 6 4 7 6 4
8 1 1 8 2 7 9
6 9 3 4 1
#107724 Difficulty: harder #173993 Difficulty: harder

4 7 8 5 3
1 2 6
2 6 6 3 8 7 4
2 8 6 3 1
9 6 5 4 2
3 7 8 7
1 8 4 3 6 4 1 9
7 5 2 4 8
2 6 1 5 9
#105805 Difficulty: harder #192342 Difficulty: harder

9 5 6 9 5
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7 1
2 9 8 7 3 2
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9 5 9 4
3 1 2 3 4 7
2 4 1 1 2 3
7 1 9 3 8 6
5 4 7 4
6 8 2 8 6 5 9
#219920 Difficulty: harder #201290 Difficulty: harder
 1 4 4 9 1
4 8 2 2 5
3 5 9 8 4
7 1 6 2 4 1
9 3 5 7 5 1 3
4 4 6 3
7 3 9 9 6 3
2 4 7 2 7
5 1 7 8
#82829 Difficulty: harder #11316 Difficulty: harder

5 6 4 9 7 8 1
2 5 8
6 7 9 3 1 9
3 9 4
5 6 8 9 6 4
3 2 8 7 5
5 9 3 6 6
7 1 9 8 7 2 3
6 7 2 1 3 7
#97175 Difficulty: harder #173084 Difficulty: harder

6 7 4
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8 5 1 3 6 8
5 4 9 2 1 2 9
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3 8 1 6 7 4 1
6 2 8
7 8 5 2
5 6 4 3 1 9 5
1 9 8 6 5
2 3
#94495 Difficulty: harder #215 Difficulty: harder
 4 5 8 1 2
1 9 5 1 2
6 7 4 8 4
9 5 2 3
5 4 2 8 6 3 1
2 1 9
2 3 5 2 4 7
1 4 2 8 3 1 7 8 9
6 7 6 7 4
#95294 Difficulty: harder #101243 Difficulty: harder

5 6 7
9 4 9 2
9 6 4 8
4 7 5 1
5 7 9 8 4
2 9 3 1 4 1 2 6
3 9 8 4
2 5 1 6 6 5 7
6 4 2 5 3 8 5 6 2
#208813 Difficulty: harder #84641 Difficulty: harder

4 7 2 3 2
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5 3 6 4 9
2 8 1 2 5
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8 5 1 8 4 5 3
2 4 5 8
3 6 8 1
7 1 8 2 5 4 3
4 5 7 2 6 1
5 8 6 7 9 6
#216106 Difficulty: harder #179942 Difficulty: harder
 1 9 9 4
2 6 8 9
7 8 3 4 2 7 4 3
6 8 9
2 8 3 9 4 5 3 4 7 9
9 3 1 7 1 2
1 2 1 4 5
4 6
5 4 6 1 3 5 9 1
#176777 Difficulty: harder #142800 Difficulty: harder

2 5 9 7 6 9 2
5 9 6 1
7 8 5 3 6
3 8 1 8 4 7
9 2 4 9
6 4 8 1
2 3 6 1 5 3 2
7 1 7 3 5
4 5 7
#8715 Difficulty: harder #23766 Difficulty: harder

7 3 9 7 8
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5 4 1 5
4 1 7 3 8 6
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3 6 8 5 9 3 4
2 1 3 7
5 3 7 9 1 2
9 2 5
9 6 2 3 1 2 6
6 8 5 4 6
#217701 Difficulty: harder #198641 Difficulty: harder
 5 8 4 2 6 1
1 5
4 3 7 9 8 9 2 7
4 7 1 5 8 2 4
5 6 4 3
9 2 1 2 3 7
2 8 9
9 2 3 7
6 8 3 1 5 8
#214002 Difficulty: harder #205528 Difficulty: harder

2 6
3 7 5 6 5 7
6 3 1 3 4
9 4 1 1 7
8 5 3 9 5 6
4 7 6 8 9 2
5 2 8 5 6 9
6 4 1 2 4
4 9 6 8 7 1
#61265 Difficulty: harder #210912 Difficulty: harder

2 8 3 4 1
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1 9 5
3 5 1
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7 3 1 6 8 1 2
6 7 9 3
8 6 8 7 2 6 4
8 5 7 7 6 4
4 1 2 3 9 8
1 3 5 3 4 2
#179241 Difficulty: harder #205018 Difficulty: harder
 4 2 8
3 5 1 7
3 8 1 4 7 2 6 3
9 6 9 6
4 7 8 5
2 5 9 7 5 9 7 4
8 6 1 3 1 6 9 2
1 5 7 7 1 3
6 5 8
#109147 Difficulty: harder #125350 Difficulty: harder

8 5 4 1
5 3 8 9 9 3 6
2 4 7
8 3 9 8 7 5
6 2 8
5 2 1 4 9 2
7 6 8 5
7 6 9
5 1 8 9 5 2 4 6 3
#147959 Difficulty: harder #169505 Difficulty: harder

1 8 2 9
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1 9 7 2 8
9 3 9 2 3
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4 8 7 4 8 1
6 3 8 4 8 3 7
6 5 6
7 3 6 4 6 5
5 1 6 7 4
2 1 1
#81757 Difficulty: harder #173028 Difficulty: harder
 5 8 3 2 9
4 2 3 8
2 6 5 1 6
8 2 5
3 9 7 9 8
7 1 1 4 7
1 4 2 1 3 7 4
8 1 5 4 6
9 3 8 2
#129475 Difficulty: harder #42991 Difficulty: harder

1 1 2
5 3 4 5
9 6 6 7 8
6 5 1 2 6 2 5
4 3 7 1 3 4
1 8 3 7
5 8 4 6 2 8 4 5
9 4
3 6 5 6 9 1
#91596 Difficulty: harder #179223 Difficulty: harder

9 8 4 1 2 4
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8 5 7
6 4 9 7 2
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8 2 5 8 2
1 6 7 3 1
2 7 9 1 3 8 7 6
7 6 2 6 7 5 3
6 1 8 9 6
2 3 8 4
#152098 Difficulty: harder #154700 Difficulty: harder
 8 7 7 6 1
4 8 3 6 8
3 5 6 7 6 5 4 3
7 5 8
1 2 9 8 3 2
5 9 3 4 7
6 3 8 9 2 7 9 6
2 4 7 5
9 5 1 6 4
#223472 Difficulty: harder #39359 Difficulty: harder

2 4 6 2
3 8 7 2 3 1
7 5 5 8
5 3 6 9 4 5
3 7 9 8 9
1 2 6 1 2
2 7 1 9 7
4 3 9 2 2 6 5
3 5 4 4 1
#133421 Difficulty: harder #162820 Difficulty: harder

1 9 7 8 4 9
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6 1 1
5 2 7 8 3 5 1 2
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9 2 8 6 5 6 3
1 9 2
4 3 8 7 4
5 8 2 7
3 9 5 1 2 8
7 4 2 4 3 5
#140154 Difficulty: harder #202123 Difficulty: harder
 8 2 4 5
1 2 6 7 8
4 6 5 6 1
8 3 1 5 2
1 5 6 8 6
4 6 8 7 1 1 4 6
2 9 3 8 1 9 4 1 2
3 2 5 3 1 9
5 4 7 7 3
#188234 Difficulty: harder #67815 Difficulty: harder

3 6 4 7
2 1 9 8 4
6 9 3 8 5 3
5 2 9 6 3 6 5
4 3 7 9
9 1 5 2 2
5 4 1 6 7 8
7 2 6 5 4 9
1 2 8 8 3 7
#124240 Difficulty: harder #143186 Difficulty: harder

6 3
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3 1 5 4 6
2 7 6 9 1 5
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3 4 6 1 4 8
8 9 7 2 8
2 1 3 7 6 1
8 4 2 4 6 3 7
9 1 5
7 6 4 5 9 8 3 4
#144240 Difficulty: harder #194241 Difficulty: harder
 6 2 9
8 5 7
9 3 6 1
9 8 1 3 9 7
6 4 5
4 7 2 8 6
5 7 6 4 8 9 3 1
8 2 5 6 2 3
4 3 7 1 6 5 8
#199385 Difficulty: harder #92426 Difficulty: harder

5 7 2 4
2 1 5 3 6 8 7
8 5 7
8 5 1 6 8 9
4 6 8 9 5 1
3 6 8 2
4 2 9 6 5 9 3 4
3 9 1 3 2 4 7
7 9 1
#75667 Difficulty: harder #112717 Difficulty: harder

1 4 5 6 1 2
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6 8 1 7 9
2 1 8 5
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1 5 4 3 2 8 5
4 6 2 3
5 3 8 7 6
9 7 1 4
8 6 6 7 3
4 3 9 5 1 9
#44420 Difficulty: harder #12608 Difficulty: harder
 8 2 9 1
1 5 4
4 3 7 2 3 8 9
3 8 4 6
6 3 9 2 8
7 8 2 7 6 3
4 7 9 6 3
5 6 8 4 1 9
1 2 5 1 3
#169338 Difficulty: harder #156030 Difficulty: harder

7 4
1 4 8 6 8 9 7
7 9 5 3 4 5
4 5 2 8
2 3 6 2
8 2 1 7 3 1 4
5 2 5
2 3 9 4
8 6 1 4 3 4 9 5 2
#175257 Difficulty: harder #109450 Difficulty: harder

6 1
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9 4 5 3 9 6
1 8 8 4 5
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6 7 1 5
2 5 1 6 9 1
3 6 8 4 2 7
4 3 8 9
7 2 3 6 9 3 4 6
1 5 2 9 2 7
#171500 Difficulty: harder #85090 Difficulty: harder
 2 1 7 9 8 6
1 3 9 3 1
9 7 2 4
3 2 1 9 1 9 7
5 8 6 3
9 6 2 5 6 2 4
6 7 9 1 8
2 3 6 8 5 8
5 2 4 2 7 5
#101431 Difficulty: harder #204665 Difficulty: harder

7 5 3 2 7 3
4 8 5 8 2 7 5 4
9
2 4 6 6 7 4
1 9 3 7 4 1 9 4
9 5 8 2 6
2 3 7 6 5 1
9 5 1 8
1 6 2 7
#50092 Difficulty: harder #138529 Difficulty: harder

8 9 3 4
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7 3 8 2 9 2 5
1 7 6 7
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6 5 1 2 7 9
9 2 1 5
5 1 6 3 2 4 1
2 8 1
2 5 3 9 2 4 5
1 6 5 4 3 8
#57884 Difficulty: harder #20455 Difficulty: harder
 3 6 5 7 4 6 5 7
2 5
8 9 7 6 8
5 7 3 9
1 9 5 1 2
6 8 6 3 2 4 8
9 2 6 8 4
4 2 4 1 7 9
3 5 5 1 3
#24759 Difficulty: harder #77790 Difficulty: harder

5 2 7 8 6
3 9 5 8 6 9 7
1 4
9 9 1
1 8 2 6 7 9 3
7 4 3 7 5 3
7 5 8 2 8 1
4 7 3 3 1 8 6
2 8 1 4 9 2
#70215 Difficulty: harder #204295 Difficulty: harder

9 7 4 2
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3 2 6 2 5 8 4
8 3 9 3 8 7
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5 8 1 9 4 3
2 7 6 3 2 1
7 2 5 5
8 6 3 1 1
7 9 4 6 8 3 9
7 3 6 1 4
#124524 Difficulty: harder #97606 Difficulty: harder
 6 8 2
2 1 7
8 9 1 3 6 3 4 5
5 2 4
9 7 3 1 3 8 5
4 9 7 8 2 9
6 7 2 4 5 3 8
4 3 6 3
7 8 4 2 6
#91634 Difficulty: harder #133183 Difficulty: harder

4 2 1 7 5
7 6 8 9 8 2
3 7 7 4
1 2 7 6 3
2 8 6 5 2
7 4 1 7 5
1 3 5 1
5 3 2 2 6 1 4 7
8 5 4 9 9 6
#171800 Difficulty: harder #149565 Difficulty: harder

1 9 5 7 9 2
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3 4 6 3 6
2 5 8
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3 5 2 8 1
2 6 9 2 9 6 5
1 7 4
5 7 3 4 8 2
6 8 2 4 7 4 5 1
7 9 8 7
#104707 Difficulty: harder #184648 Difficulty: harder
 2 1 2 4
1 3 9 3 8 6 5
4 5 9 3
4 2 5 6 2
8 3 1
9 8 5 6 4 5 8
1 3 6 1 5 3 7
5 7 8 4 1
3 6 8 9 6 9
#166098 Difficulty: harder #10580 Difficulty: harder

3 6 6 3 8
1 4 7 2 6
5 7 8 4
7 1 8 9 3
9 5 4 6 7 5 6 1
3 2 7 2
8 4 1 4 5
2 1 7 5 3 4 6 7
4 5 7 8 6
#197417 Difficulty: harder #144343 Difficulty: harder

3 2 1 9
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9 7 4 5
8 1 5 7 1
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5 8 4 2 8 1 3
3 9 5 4 6 4 5 2 8
6 7
6 3 7 9 5
7 2 1 8 8 6
4 9 3
#55938 Difficulty: harder #12335 Difficulty: harder