An Easy 7×7 Puzzle Solved with Shape Squeeze in 12 Steps

This 7×7 board rates as easy (difficulty score 787). Solving it from scratch takes 12 logical steps, using 7 techniques: Single cell, Row/column exclusion, Adjacency clear, Region confinement, Line confinement, Paired regions, Shape squeeze. Every step below is forced: nothing here is a guess.

1. First, every open cell left in this region sits in row 1, so its marker has to land there; that clears every other open cell in the row.
2. Next, every open cell in column G belongs to the same region, so that region's marker has to be somewhere in this column; that clears every other open cell in the region.
3. Then, together, two regions have open cells only in columns E and F; with one marker each, those two markers have to fill exactly those two columns, so every other region's open cells there can be cleared.
4. After that, together, two regions have open cells only in rows 2 and 3; with one marker each, those two markers have to fill exactly those two rows, so every other region's open cells there can be cleared.
5. Now, place a marker at D4. Region has exactly one open cell left. Placing here clears the rest of row 4, column D, and its region. Placing here also clears its 1 touching neighbour.
6. From there, place a marker at B5. Region has exactly one open cell left. Placing here clears the rest of row 5, column B, and its region. Placing here also clears its 1 touching neighbour.
7. Following that, place a marker at G6. Row 6 has exactly one open cell left. Placing here clears the rest of row 6, column G, and its region.
8. First, place a marker at C7. Column 3 has exactly one open cell left. Placing here clears the rest of row 7, column C, and its region.
9. Next, every remaining candidate in this region touches E2 and F2, so whichever candidate ends up marked will clear them, and they can be ruled out now regardless of which one wins.
10. Then, place a marker at F3. Region has exactly one open cell left. Placing here clears the rest of row 3, column F, and its region.
11. After that, place a marker at E1. Region has exactly one open cell left.
12. Finally, place a marker at A2. Region has exactly one open cell left.

The key move here was Shape squeeze. Once you can spot that, this board falls quickly. ∎