LITS


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LITS is a logic puzzle with simple rules and challenging solutions.

The rules of LITS are simple:
You have to place one tetromino* in each region in such a way that:
- 2 tetrominoes of matching types cannot touch each other horizontally or vertically. Rotations and reflections count as matching.
- The shaded cells should form a single connected area.
- 2x2 shaded areas are not allowed.

* Tetromino is a shape made of 4 connected cells. There are 5 types of tetrominoes, which are usually named L, I, T, S and O, based on their shape. The O tetromino is not used in this puzzle because it is a 2x2 shape, which is not allowed.

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LITS


6x6 Normal LITS | 6x6 Hard LITS | 8x8 Normal LITS | 8x8 Hard LITS | 10x10 Normal LITS | 10x10 Hard LITS | 15x15 Normal LITS | 15x15 Hard LITS | 20x20 Normal LITS | 20x20 Hard LITS

This Month
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Today
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MO3
1.anonymous
124
01:25.77
2.anonymous
129
12:23.99
3. Make
269
16:26.47
4. Douglas Shamlin Jr.
687
18:00.84
5. MIMI CHIEN
70
21:39.43
6. Icay
187
28:17.54
7. huffpuff1337
137
32:59.30
8. summernight
205
35:11.07
9. adam eve
215
35:22.84
10. a979453451
182
36:10.54
AO5
1.anonymous
124
01:36.24
2.anonymous
129
14:23.75
3. Make
269
15:52.14
4. Douglas Shamlin Jr.
687
19:38.44
5. Icay
187
27:26.85
6. adam eve
215
35:22.84
7. a979453451
182
37:21.59
8. summernight
205
37:57.04
9. huffpuff1337
137
40:05.34
10. qqwref
259
40:59.44
AO12
1. Make
269
18:42.75
2. Douglas Shamlin Jr.
687
25:39.71
3. Icay
187
33:08.20
4. adam eve
215
41:48.47
5. qqwref
259
45:56.83
6. haramey
228
46:28.23
7. yufei ma
126
50:03.05
8. 星尘_自然选择
158
54:42.20
9. pair_T
128
1:11:28.44
10. pap
157
1:12:49.01
Robots / programmatic solversinfo  
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* MO3 - Mean of 3. The average of 3 consecutive times.
AO5 - Average of 5. The average of 5 consecutive times ignoring the highest and the lowest.
AO12 - Average of 12. The average of 12 consecutive times ignoring the highest and the lowest.
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2025-05-11 20:51:39

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