An Easy 8×8 Puzzle Solved with Shape Squeeze in 13 Steps

This 8×8 board rates as easy (difficulty score 783). Solving it from scratch takes 13 logical steps, using 6 techniques: Single cell, Row/column exclusion, Adjacency clear, Region confinement, Paired regions, Shape squeeze. Every step below is forced: nothing here is a guess.

1. First, together, two regions have open cells only in columns G and H; 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.
2. Next, place a marker at F7. Region has exactly one open cell left. Placing here clears the rest of row 7, column F, and its region. Placing here also clears its 2 touching neighbours.
3. Then, place a marker at E4. Region has exactly one open cell left. Placing here clears the rest of row 4, column E, and its region. Placing here also clears its 2 touching neighbours.
4. After that, place a marker at G3. Region has exactly one open cell left. Placing here clears the rest of row 3, column G, and its region. Placing here also clears its 1 touching neighbour.
5. Now, place a marker at H1. Region has exactly one open cell left. Placing here clears the rest of row 1, column H, and its region.
6. From there, every open cell left in this region sits in row 2, so its marker has to land there; that clears every other open cell in the row.
7. Following that, every open cell left in this region sits in row 5, so its marker has to land there; that clears every other open cell in the row.
8. First, every open cell left in this region sits in row 6, so its marker has to land there; that clears every other open cell in the row.
9. Next, every remaining candidate in this region touches B6 and C6, 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 A6. Region has exactly one open cell left. Placing here clears the rest of row 6, column A, and its region. Placing here also clears its 1 touching neighbour.
11. After that, place a marker at C5. Region has exactly one open cell left. Placing here clears the rest of row 5, column C, and its region.
12. Now, place a marker at D2. Region has exactly one open cell left. Placing here clears the rest of row 2, column D, and its region.
13. Finally, place a marker at B8. Region has exactly one open cell left.

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