Sand Blocks level guide
Sand Blocks: Drop Puzzle Level 309 Walkthrough
Level 309 is the batch's only three-tube board, with a red tube over c1, a cyan tube over c4 that turns yellow as it falls and a green tube over c6. A U-shaped notch cuts c3-c5 away from r8 downward, and the wide yellow counter bar at r4 c3-c5 reads 15 on the opening frame and acts as the level's spine.
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How to Solve Sand Blocks Level 309 — Full Solution
- Take the red bar first. The counter across r1 c1-c2 reads 5 on the opening frame, 2 by t=7.5s and 1 by t=15s; the purple 1x1s at r2c1 and r2c2 and the yellow 1x1 at r3c1 are what feed it, and they clear before the red vertical at r3-r4 c2 can take sand.
- Feed the central yellow bar. It reads 15 at t=0, 12 at t=7.5s, 11 from t=10s to t=20s, 10 at t=30s, 9 from t=40s to t=70s, 7 at t=80s, 6 from t=90s to t=100s, 3 at t=107.5s and 2 at t=109.5s before it clears; the cyan tube's sand has to come down c4 into the yellow L at r5-r6 c4-c5 first.
- Drain the left pink checkered bar at r6-r7 c1: 12 at t=0, 8 at t=10-20s, 7 at t=30s, 6 from t=40s to t=70s and 3 at t=90s with the white drag highlight on it, then it clears. The cyan 1x1 at r8c1 and the blue L at r9-r10 c1-c2 are the receivers below it.
- Drain the right pink checkered bar at r9-r10 c7 on its own clock: 9 at t=0, 5 at t=10-20s, 4 at t=30s, 3 from t=40s to t=70s and 1 at t=80s, cleared by t=90s. The yellow vertical at r9-r10 c6 and the green vertical at r6-r8 c6 feed that lane.
- Keep both bomb receivers alive: the purple 1x1 at r7c2 and the one at r8c7 each carry a 5 badge and have to stay reachable, so do not fill r7c1, r8c2, r8c6 or r8c7 around them.
- Work the middle. The blue L across r6-r7 c4-c5 and the yellow L across r5-r6 c4-c5 sit directly over the U-notch, so they must be filled and cleared before anything is parked at r7c4 or r8c4. The red 1x1 at r10c2 and the red vertical at r3-r4 c2 are the last red pieces.
- Finish the legs. By t=114.5s the yellow bar is gone and the board is down to the c1 and c6 legs, with a bare cyan funnel showing at the top of the middle tube around t=118-126s; the cyan and blue receivers in those legs are the final pair and the board empties at about t=130s before the SAND BLOCKS transition.
Colors in this level:
Red, Yellow, Green, Cyan, Blue, Purple, Pink
Common Mistakes to Avoid
- Parking the yellow L at r5-r6 c4-c5 into r7c4 or r8c4, which puts it over the U-notch edge and freezes the central yellow bar at 6.
- Filling r7c1 or r8c2 so the bomb-badged purple receiver at r7c2 is stranded at 5.
- Treating the two pink checkered bars as one clock - the left one holds at 6 for thirty seconds while the right one runs 9, 5, 4, 3, 1.
Quick Tips for Sand Blocks Level 309 (quick clues)
- The two pink checkered bars never share a schedule, so the right bar's 1 is the signal that the c7 lane is nearly done.
- Treat the central yellow bar's 6 as the warning that the U-notch legs are about to open.
- Keep r7c1, r8c2, r8c6 and r8c7 clear so both bomb receivers keep their contact.
Board notes 5 details
- Layout
- A 7-column by 11-row grid (r1 top) with a U-notch: c3, c4 and c5 stop at r8 and purple background shows from r8 to r11. Tubes stand over c1 (red), c4 (cyan, turning yellow) and c6 (green). A red counter bar spans r1 c1-c2 reading 5, a wide yellow counter bar spans r4 c3-c5 reading 15, a pink checkered bar sits at r6-r7 c1 reading 12, a second pink checkered bar sits at r9-r10 c7 reading 9, and purple 1x1 bomb-badged receivers reading 5 sit at r7c2 and r8c7.
- Goal
- Drain the central yellow bar at r4 c3-c5 (15) before the r5-r6 c4-c5 yellow L can take sand, clear both pink checkered bars on their own schedules, and keep the two bomb-badged purple receivers at r7c2 and r8c7 in contact until the c1 and c6 legs finish.
- Opening
- The red bar at r1 c1-c2 is fastest - 5 at the opening, 2 by t=7.5s and 1 by t=15s. The central yellow bar falls 15 to 12 by t=7.5s and holds at 11 from t=10s to t=20s while the purple 1x1s at r2c1 and r2c2 and the yellow 1x1 at r3c1 clear. The left pink bar falls 12 to 8 in the first ten seconds and the right pink bar falls 9 to 5 in the same window.
- Danger Zone
- The wide yellow bar at r4 c3-c5 is the only receiver under the middle tube and the U-notch starts immediately below at r8, so parking the r5-r6 c4-c5 yellow L into r7c4 or r8c4 puts it over the notch edge where no sand can reach and freezes the yellow bar at 6. On the left, filling r7c1 or r8c2 leaves the r7c2 bomb receiver stranded at 5.
- Mechanics
- Three feed tubes (red over c1, cyan-over-yellow over c4, green over c6), a U-shaped bottom notch that cuts c3-c5 from r8 to r11, a wide yellow spine counter at r4 c3-c5, two movable pink checkered counter bars that drain on independent clocks, and purple 1x1 receivers with bomb badges reading 5 at r7c2 and r8c7.
Frequently Asked Questions
Why is the middle yellow bar so much slower than the others?
It is the level's spine. The middle tube pours straight into it, it opens at 15, and everything above it - including the yellow L at r5-r6 c4-c5 - has to drain through c4 before it can take sand, so it holds at 11, 9 and 6 for long stretches.
Do the two pink checkered bars drain together?
No. The left bar at r6-r7 c1 runs 12, 8, 7, 6, 3 and the right bar at r9-r10 c7 runs 9, 5, 4, 3, 1, so they reach their final values at different times.
What is the U-shaped gap at the bottom?
Columns c3, c4 and c5 are cut away from r8 down to r11, leaving purple background. It splits the bottom of the board into a c1-c2 leg and a c6-c7 leg joined only at r7, which is why receivers parked near r7c4 or r8c4 lose contact.