Ladders

Slide the blocks to free the target through the opening. Work up through numbered puzzles, one at a time.

Shade one L, I, T or S tetromino in each region so all shaded cells connect, no 2×2 is filled, and matching shapes never touch.

Place one crown in each row, column and colored region so that no two crowns ever touch — not even diagonally.

Place two stars in each row, column and colored region so that no two stars ever touch — not even diagonally.

Divide the grid into rectangles so that each one holds exactly one number — equal to that rectangle's area.

Fill the grid with two symbols so no three sit in a line, each row and column is balanced, and every = and × mark is obeyed.

Place bulbs so every square is lit. No two bulbs may see each other along a row or column, and each numbered wall touches exactly that many. Work up through numbered puzzles, one at a time.

Draw a single closed loop along the edges between the dots. Each number says exactly how many of its four sides the loop uses — and the loop may never branch or cross itself.

Fill the grid from the run-length clues down each row and column. Every board is solvable by pure deduction — no guessing, ever — one numbered puzzle at a time.

Link the numbered islands with horizontal and vertical bridges — at most two between a pair, none crossing — so each island has exactly its number of bridges and all connect into one network.

Pick a colour, then tap any region to fill it. Unify the board in as few moves as you can — one numbered puzzle at a time.