Marked Column: Open Sky
Game details
The Open Sky board asks you to protect column 1. Two fixed route shapes now differ from the earlier crossing. Row 1 starts with 6 occupied squares and column 1 with 7. Clear 5 lines within 7 placements using the fixed trays; set 2 includes a 4-block route piece. The highlighted column 1 must clear at least once; other line clears still free space.
TARGET 5 LINES · LIMIT 7 MOVES
MARKED COLUMN 1: CLEAR TO WIN
Colors can mix. Fill any row or column to clear it.
FIXED SET 1 OF 3
Next move unlocks after one failed attempt.
Walkthrough unlocks after two failed attempts.
Exact help marks this attempt as assisted. Replay without it to earn an independent clear.
Use each set of three pieces to receive the next fixed set. Full rows and columns clear together, regardless of color.
Play endless mode →1–3 select · Arrows move · Enter/Space place · R restart · M sound
How to solve this puzzle
Clear 5 complete rows or columns in no more than 7 moves. Colors can mix; filled rows and columns clear at the same time.
Main challenge: clear the highlighted column 1 at least once. Other clears still count toward the total and open space, but cannot replace this target.
Estimated difficulty: Hard. Board: 8 × 8. Move limit: 7. A verified route uses 7 placements; this is not claimed as the shortest route.
Planning tip
Include the marked line in your plan. Clearing other lines may open space, but can also remove blocks needed by the target. Use the in-game next-move button when you want an exact placement.