Region Cut
Draw borders to split the grid into regions that each hit the target sum.
Daily #100·Sep 15
Clean Trace
Split the grid into connected regions that each sum to 11.
hardTarget 11
0/1 regions valid
4
4
3
1
4
1
3
4
4
3
4
3
1
4
4
3
4
1
1
1
3
3
4
4
4
4
3
1
2
1
2
4
4
1
1
1
99 / 11
drag to draw bordersunprocessed regionvalid regioninvalid region