Irupu
Place 1×3 blocks around the circles so they form one continuous loop.
Controls
Drag across three cells in a row or column to place a 1×3 block. Every circle must be covered by exactly one block, and every block must contain one circle. Each block must touch exactly two other blocks, and all blocks must join into a single loop. Tap a block to remove it.
Logic · Deduction · Grid · Loops · Placement
Brain training · PuzGo