One Line Puzzle

Level map.

210 puzzles across 7 rounds. Every level is open to play.

Draw from the circle, cover each active square once, and reach the diamond last. The first round begins with compact boards; the second varies gaps and endpoints across 40 to 50 active squares, the third connects 50 to 56 squares on wider layouts, the fourth uses 52 to 58 squares with different passages to preserve, the fifth revisits 54 to 58 squares with new gaps and route choices, the sixth covers 56 to 60 squares with fewer gaps and longer routes, and the seventh varies 56 to 60 squares across new shapes and connections. Reverse tracing and retries are free.

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Back to level 1 →
LEVELS 1–30

Round 1

LEVEL 01Find your flow

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6 squares · 5 movesContinue playing →LEVEL 02A little room to think

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12 squares · 11 movesPlay level →LEVEL 03Outside, then inside

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16 squares · 15 movesPlay level →LEVEL 04Keep both sides connected

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22 squares · 21 movesPlay level →LEVEL 05Leave a way back

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26 squares · 25 movesPlay level →LEVEL 06Two ways across

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28 squares · 27 movesPlay level →LEVEL 07A narrow return

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28 squares · 27 movesPlay level →LEVEL 08Keep the bridge open

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28 squares · 27 movesPlay level →LEVEL 09Across the gap

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28 squares · 27 movesPlay level →LEVEL 10One last connection

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28 squares · 27 movesPlay level →LEVEL 11Thread the middle

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32 squares · 31 movesPlay level →LEVEL 12Three open corners

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32 squares · 31 movesPlay level →LEVEL 13Protect the crossing

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32 squares · 31 movesPlay level →LEVEL 14Turn before the pocket

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32 squares · 31 movesPlay level →LEVEL 15Room to return

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32 squares · 31 movesPlay level →LEVEL 16Side by side

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34 squares · 33 movesPlay level →LEVEL 17A winding passage

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34 squares · 33 movesPlay level →LEVEL 18Save the inner turn

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34 squares · 33 movesPlay level →LEVEL 19Through both halves

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34 squares · 33 movesPlay level →LEVEL 20Leave the gate open

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34 squares · 33 movesPlay level →LEVEL 21A wider crossing

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38 squares · 37 movesPlay level →LEVEL 22Loops and links

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38 squares · 37 movesPlay level →LEVEL 23Reach the far corner

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38 squares · 37 movesPlay level →LEVEL 24Before the last turn

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38 squares · 37 movesPlay level →LEVEL 25A path between rooms

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38 squares · 37 movesPlay level →LEVEL 26Plan the return

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40 squares · 39 movesPlay level →LEVEL 27Across the whole board

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40 squares · 39 movesPlay level →LEVEL 28The remaining pocket

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40 squares · 39 movesPlay level →LEVEL 29Hold the connection

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40 squares · 39 movesPlay level →LEVEL 30One continuous journey

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40 squares · 39 movesPlay level →
LEVELS 31–60

Round 2

LEVEL 31Between the pockets

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40 squares · 39 movesPlay level →LEVEL 32A crossing to keep

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40 squares · 39 movesPlay level →LEVEL 33Both sides of the gap

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40 squares · 39 movesPlay level →LEVEL 34Return through the middle

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40 squares · 39 movesPlay level →LEVEL 35One open passage

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40 squares · 39 movesPlay level →LEVEL 36Seven missing squares

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42 squares · 41 movesPlay level →LEVEL 37Connections through the middle

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42 squares · 41 movesPlay level →LEVEL 38The inner connection

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42 squares · 41 movesPlay level →LEVEL 39Keep room to turn

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42 squares · 41 movesPlay level →LEVEL 40Links across the board

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42 squares · 41 movesPlay level →LEVEL 41The far-side pocket

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44 squares · 43 movesPlay level →LEVEL 42Thread two openings

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44 squares · 43 movesPlay level →LEVEL 43Across the broken grid

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44 squares · 43 movesPlay level →LEVEL 44A careful crossing

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44 squares · 43 movesPlay level →LEVEL 45The last open corner

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44 squares · 43 movesPlay level →LEVEL 46Space for a return

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46 squares · 45 movesPlay level →LEVEL 47The winding center

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46 squares · 45 movesPlay level →LEVEL 48Before the final stretch

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46 squares · 45 movesPlay level →LEVEL 49A narrow connection

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46 squares · 45 movesPlay level →LEVEL 50The other side

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46 squares · 45 movesPlay level →LEVEL 51Eight islands

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48 squares · 47 movesPlay level →LEVEL 52Connect the outer rooms

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48 squares · 47 movesPlay level →LEVEL 53A turn between gaps

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48 squares · 47 movesPlay level →LEVEL 54Keep a way through

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48 squares · 47 movesPlay level →LEVEL 55Keep the regions connected

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48 squares · 47 movesPlay level →LEVEL 56Across the whole canvas

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50 squares · 49 movesPlay level →LEVEL 57A path around six gaps

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50 squares · 49 movesPlay level →LEVEL 58Hold the middle open

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50 squares · 49 movesPlay level →LEVEL 59Leave no pocket behind

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50 squares · 49 movesPlay level →LEVEL 60One line to the finish

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50 squares · 49 movesPlay level →
LEVELS 61–90

Round 3

LEVEL 61Across both open edges

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50 squares · 49 movesPlay level →LEVEL 62Leave the middle connected

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50 squares · 49 movesPlay level →LEVEL 63An exit for each pocket

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50 squares · 49 movesPlay level →LEVEL 64Around the broken border

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50 squares · 49 movesPlay level →LEVEL 65Meet at the inner turn

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50 squares · 49 movesPlay level →LEVEL 66Three links to preserve

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52 squares · 51 movesPlay level →LEVEL 67Return beside the diamond

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52 squares · 51 movesPlay level →LEVEL 68The long outside passage

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52 squares · 51 movesPlay level →LEVEL 69Separate paths to connect

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52 squares · 51 movesPlay level →LEVEL 70One link still open

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52 squares · 51 movesPlay level →LEVEL 71Across the narrow middle

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54 squares · 53 movesPlay level →LEVEL 72Connections across the open regions

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54 squares · 53 movesPlay level →LEVEL 73Keep the far edge free

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54 squares · 53 movesPlay level →LEVEL 74Keep the inner crossings open

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54 squares · 53 movesPlay level →LEVEL 75Connect the last pocket

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54 squares · 53 movesPlay level →LEVEL 76Eight rows to connect

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52 squares · 51 movesPlay level →LEVEL 77A passage between islands

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52 squares · 51 movesPlay level →LEVEL 78Both sides need an exit

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52 squares · 51 movesPlay level →LEVEL 79Return through the open gap

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52 squares · 51 movesPlay level →LEVEL 80Protect the central link

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52 squares · 51 movesPlay level →LEVEL 81A route across the gaps

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54 squares · 53 movesPlay level →LEVEL 82Leave a way around

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54 squares · 53 movesPlay level →LEVEL 83The inner edge first

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54 squares · 53 movesPlay level →LEVEL 84Follow the open border

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54 squares · 53 movesPlay level →LEVEL 85A link to the far side

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54 squares · 53 movesPlay level →LEVEL 86Across the widest board

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56 squares · 55 movesPlay level →LEVEL 87Thread the last passages

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56 squares · 55 movesPlay level →LEVEL 88Keep the diamond reachable

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56 squares · 55 movesPlay level →LEVEL 89The final pocket to fill

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56 squares · 55 movesPlay level →LEVEL 90One continuous return

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56 squares · 55 movesPlay level →
LEVELS 91–120

Round 4

LEVEL 91Read the scattered spaces

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52 squares · 51 movesPlay level →LEVEL 92Keep two passages open

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52 squares · 51 movesPlay level →LEVEL 93Across the upper pocket

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52 squares · 51 movesPlay level →LEVEL 94A link around the centre

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52 squares · 51 movesPlay level →LEVEL 95Return beside the outer gap

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52 squares · 51 movesPlay level →LEVEL 96An exit from each side

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54 squares · 53 movesPlay level →LEVEL 97Join the divided edges

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54 squares · 53 movesPlay level →LEVEL 98Through the middle passage

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54 squares · 53 movesPlay level →LEVEL 99Leave the corner connected

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54 squares · 53 movesPlay level →LEVEL 100Past the narrow opening

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54 squares · 53 movesPlay level →LEVEL 101Weave around both spaces

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56 squares · 55 movesPlay level →LEVEL 102The far edge still waits

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56 squares · 55 movesPlay level →LEVEL 103An unfinished inner turn

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56 squares · 55 movesPlay level →LEVEL 104Across the quiet border

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56 squares · 55 movesPlay level →LEVEL 105Connect the remaining sides

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56 squares · 55 movesPlay level →LEVEL 106A different way around

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54 squares · 53 movesPlay level →LEVEL 107Two pockets to revisit

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54 squares · 53 movesPlay level →LEVEL 108Cross the open centre

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54 squares · 53 movesPlay level →LEVEL 109Keep the lower passage

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54 squares · 53 movesPlay level →LEVEL 110Return across the upper edge

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54 squares · 53 movesPlay level →LEVEL 111The route between gaps

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56 squares · 55 movesPlay level →LEVEL 112Leave the inner door open

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56 squares · 55 movesPlay level →LEVEL 113One more region to join

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56 squares · 55 movesPlay level →LEVEL 114Around the final bend

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56 squares · 55 movesPlay level →LEVEL 115Both edges need a link

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56 squares · 55 movesPlay level →LEVEL 116Read the widest shape

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58 squares · 57 movesPlay level →LEVEL 117An exit beyond the corner

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58 squares · 57 movesPlay level →LEVEL 118Thread the outer connections

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58 squares · 57 movesPlay level →LEVEL 119Keep one passage for last

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58 squares · 57 movesPlay level →LEVEL 120A fourth continuous journey

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58 squares · 57 movesPlay level →
LEVELS 121–150

Round 5

LEVEL 121Leave the inner passage

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54 squares · 53 movesPlay level →LEVEL 122An open way to the centre

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54 squares · 53 movesPlay level →LEVEL 123Return around the side pocket

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54 squares · 53 movesPlay level →LEVEL 124The border still connects

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54 squares · 53 movesPlay level →LEVEL 125Keep the inner square reachable

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54 squares · 53 movesPlay level →LEVEL 126Between three open regions

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56 squares · 55 movesPlay level →LEVEL 127Read the edge before crossing

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56 squares · 55 movesPlay level →LEVEL 128A passage beneath the gap

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56 squares · 55 movesPlay level →LEVEL 129Join the two far corners

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56 squares · 55 movesPlay level →LEVEL 130Return through the middle

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56 squares · 55 movesPlay level →LEVEL 131Along the wider border

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58 squares · 57 movesPlay level →LEVEL 132Leave room for the last turn

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58 squares · 57 movesPlay level →LEVEL 133Connect the farthest pocket

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58 squares · 57 movesPlay level →LEVEL 134The open edge comes later

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58 squares · 57 movesPlay level →LEVEL 135One region at a time

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58 squares · 57 movesPlay level →LEVEL 136A new order through the gaps

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54 squares · 53 movesPlay level →LEVEL 137Keep the short link open

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54 squares · 53 movesPlay level →LEVEL 138Across the split middle

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54 squares · 53 movesPlay level →LEVEL 139Return beside the narrow edge

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54 squares · 53 movesPlay level →LEVEL 140The pocket beyond the bend

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54 squares · 53 movesPlay level →LEVEL 141A path around the empty centre

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56 squares · 55 movesPlay level →LEVEL 142Join both sides before leaving

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56 squares · 55 movesPlay level →LEVEL 143Save the inner passage

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56 squares · 55 movesPlay level →LEVEL 144The far corner needs a return

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56 squares · 55 movesPlay level →LEVEL 145Connect the lower edge last

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56 squares · 55 movesPlay level →LEVEL 146Through the final open regions

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58 squares · 57 movesPlay level →LEVEL 147A return beside the diamond

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58 squares · 57 movesPlay level →LEVEL 148Leave the last connection free

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58 squares · 57 movesPlay level →LEVEL 149The fifth round takes shape

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58 squares · 57 movesPlay level →LEVEL 150One line through every region

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58 squares · 57 movesPlay level →
LEVELS 151–180

Round 6

LEVEL 151Keep the upper passage connected

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56 squares · 55 movesPlay level →LEVEL 152A return around the small gap

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56 squares · 55 movesPlay level →LEVEL 153The side region waits

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56 squares · 55 movesPlay level →LEVEL 154Across the open square

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56 squares · 55 movesPlay level →LEVEL 155Bring the edges together

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56 squares · 55 movesPlay level →LEVEL 156Between the inward turns

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58 squares · 57 movesPlay level →LEVEL 157Keep a route to the far side

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58 squares · 57 movesPlay level →LEVEL 158The pocket beside the circle

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58 squares · 57 movesPlay level →LEVEL 159Link the upper and lower regions

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58 squares · 57 movesPlay level →LEVEL 160A passage through the centre

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58 squares · 57 movesPlay level →LEVEL 161Read the nearly full board

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60 squares · 59 movesPlay level →LEVEL 162An opening around four gaps

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60 squares · 59 movesPlay level →LEVEL 163Leave the corner connected

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60 squares · 59 movesPlay level →LEVEL 164The long way to the diamond

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60 squares · 59 movesPlay level →LEVEL 165Return before closing the edge

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60 squares · 59 movesPlay level →LEVEL 166New gaps along the border

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56 squares · 55 movesPlay level →LEVEL 167Keep both exits available

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56 squares · 55 movesPlay level →LEVEL 168Through the opposite region

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56 squares · 55 movesPlay level →LEVEL 169Around the interrupted middle

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56 squares · 55 movesPlay level →LEVEL 170The outer connection remains

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56 squares · 55 movesPlay level →LEVEL 171Connect the narrow regions

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58 squares · 57 movesPlay level →LEVEL 172A turn beside the last pocket

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58 squares · 57 movesPlay level →LEVEL 173Leave a link across the board

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58 squares · 57 movesPlay level →LEVEL 174The centre connects both sides

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58 squares · 57 movesPlay level →LEVEL 175Reach the far edge and return

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58 squares · 57 movesPlay level →LEVEL 176Across the final four gaps

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60 squares · 59 movesPlay level →LEVEL 177Keep the inward passage open

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60 squares · 59 movesPlay level →LEVEL 178One last return to the border

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60 squares · 59 movesPlay level →LEVEL 179The sixth round comes together

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60 squares · 59 movesPlay level →LEVEL 180Every region in one line

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60 squares · 59 movesPlay level →
LEVELS 181–210

Round 7

LEVEL 181A new order through the open board

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58 squares · 57 movesPlay level →LEVEL 182Keep a way around the inner gap

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58 squares · 57 movesPlay level →LEVEL 183The far region stays connected

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58 squares · 57 movesPlay level →LEVEL 184Join the borders before the finish

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58 squares · 57 movesPlay level →LEVEL 185Return between the open edges

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58 squares · 57 movesPlay level →LEVEL 186Read the breaks in the grid

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56 squares · 55 movesPlay level →LEVEL 187Leave both regions reachable

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56 squares · 55 movesPlay level →LEVEL 188Across the border and back

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56 squares · 55 movesPlay level →LEVEL 189Keep the small pocket open

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56 squares · 55 movesPlay level →LEVEL 190A route between the gaps

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56 squares · 55 movesPlay level →LEVEL 191Four gaps and a longer line

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60 squares · 59 movesPlay level →LEVEL 192Connect the nearly full square

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60 squares · 59 movesPlay level →LEVEL 193A turn before the final region

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60 squares · 59 movesPlay level →LEVEL 194Leave space for the return

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60 squares · 59 movesPlay level →LEVEL 195Bring the last regions together

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60 squares · 59 movesPlay level →LEVEL 196Around a different centre

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58 squares · 57 movesPlay level →LEVEL 197The open side needs a return

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58 squares · 57 movesPlay level →LEVEL 198Keep the distant edge reachable

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58 squares · 57 movesPlay level →LEVEL 199Across the middle connection

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58 squares · 57 movesPlay level →LEVEL 200A passage for the remaining squares

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58 squares · 57 movesPlay level →LEVEL 201Between the interrupted rows

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56 squares · 55 movesPlay level →LEVEL 202The next region can wait

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56 squares · 55 movesPlay level →LEVEL 203Keep a link beside the gap

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56 squares · 55 movesPlay level →LEVEL 204A return through the outer region

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56 squares · 55 movesPlay level →LEVEL 205Connect the two sides in order

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56 squares · 55 movesPlay level →LEVEL 206One line around the last gaps

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60 squares · 59 movesPlay level →LEVEL 207The far border comes next

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60 squares · 59 movesPlay level →LEVEL 208Return through the open middle

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60 squares · 59 movesPlay level →LEVEL 209The seventh round connects

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60 squares · 59 movesPlay level →LEVEL 210All regions on a single line

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60 squares · 59 movesPlay level →