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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