An Easy 9×9 Puzzle Solved with Paired Regions in 14 Steps

This 9×9 board rates as easy (difficulty score 672). Solving it from scratch takes 14 logical steps, using 5 techniques: Single cell, Row/column exclusion, Adjacency clear, Region confinement, Paired regions. Every step below is forced: nothing here is a guess.

1. First, every open cell left in this region sits in column F, so its marker has to land there; that clears every other open cell in the column.
2. Next, together, two regions have open cells only in rows 1 and 2; 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.
3. Then, every open cell left in this region sits in row 3, so its marker has to land there; that clears every other open cell in the row.
4. After that, every open cell left in this region sits in row 4, so its marker has to land there; that clears every other open cell in the row.
5. Now, 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.
6. From there, 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.
7. Following that, place a marker at B4. Region has exactly one open cell left. Placing here clears the rest of row 4, column B, and its region.
8. First, place a marker at C7. Region has exactly one open cell left. Placing here clears the rest of row 7, column C, and its region. Placing here also clears its 1 touching neighbour.
9. Next, place a marker at D9. Column 4 has exactly one open cell left. Placing here clears the rest of row 9, column D, and its region.
10. Then, place a marker at E5. Column 5 has exactly one open cell left. Placing here clears the rest of row 5, column E, and its region.
11. After that, place a marker at G3. Column 7 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.
12. Now, place a marker at F1. Region has exactly one open cell left. Placing here clears the rest of row 1, column F, and its region.
13. From there, place a marker at I2. Region has exactly one open cell left. Placing here clears the rest of row 2, column I, and its region.
14. Finally, place a marker at H8. Region has exactly one open cell left.

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