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
1. picarat
55
02:57.01
2. czar519 03:07.00
3. Avalon 04:02.26
4. Psychic 04:31.92
5. randomflyintaco
120
04:38.03
6. erichiro 04:40.11
7. DdBbon 06:04.76
8. choroba 06:22.80
9. OSHMKUFA
22
06:31.29
10. NBGalli 06:31.85
11. Dereham
51
06:33.01
12. urzsiraf 06:52.03
13. NanogramFreak 07:00.32
14. Paracosmic
34
07:09.24
15. DenoCFH
9
07:57.73
16. Bhaskar 11:47.41
17. La22y 12:17.24
18. Xiongqi ZHANG
21
12:33.59
19. bsk5941 13:22.48
20. xilli 14:32.24
This Week
1. picarat
55
02:57.01
2. DdBbon 06:08.70
3. choroba 06:22.80
4. urzsiraf 06:52.03
5. Paracosmic
34
07:09.24
6. Bhaskar 11:47.41
7. cratic
22
19:50.49
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Today
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MO3
1. Make
274
01:09.48
2. Icay
191
01:45.01
3. numbrr
300
02:10.03
4. vortressovortex#0
40
02:13.49
5. scott851028
88
02:38.26
6. summernight
215
02:51.62
7. GoldChoco36
136
02:53.85
8. 孤单心事
146
02:57.99
9. jb082005
45
03:07.48
10. haramey
231
03:12.52
AO5
1. Make
274
01:14.46
2. Icay
191
01:51.68
3. numbrr
300
02:03.47
4. vortressovortex#0
40
02:17.33
5. scott851028
88
02:50.75
6. 孤单心事
146
02:59.33
7. GoldChoco36
136
03:00.56
8. summernight
215
03:07.70
9. jb082005
45
03:18.47
10. haramey
231
03:20.39
AO12
1. Make
274
01:25.29
2. Icay
191
02:11.57
3. vortressovortex#0
40
02:48.99
4. numbrr
300
02:53.09
5. scott851028
88
03:12.41
6. GoldChoco36
136
03:30.80
7. haramey
231
03:49.07
8. -完颜彩虹兔-
29
03:51.49
9. vowels
216
03:53.98
10. jb082005
45
03:57.88
Robots / programmatic solversinfo  
1.tlstyer
127
00:00.020
2.4s4f400:00.535
3.Paul Bismuth
1
00:13.581

* 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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2025-09-15 22:03:47

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