An Easy 9×9 Logic Puzzle, Solved in 9 Steps

This 9×9 board rates as easy (difficulty score 321). Solving it from scratch takes 9 logical steps, using 3 techniques: Single cell, Row/column exclusion, Adjacency clear. Every step below is forced: nothing here is a guess.

1. First, 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. Placing here also clears its 2 touching neighbours.
2. Next, place a marker at I3. Region has exactly one open cell left. Placing here clears the rest of row 3, column I, and its region.
3. Then, place a marker at A8. Region has exactly one open cell left. Placing here clears the rest of row 8, column A, and its region. Placing here also clears its 2 touching neighbours.
4. After 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. Placing here also clears its 1 touching neighbour.
5. Now, place a marker at F2. Region has exactly one open cell left. Placing here clears the rest of row 2, column F, and its region.
6. From there, place a marker at D5. Region has exactly one open cell left. Placing here clears the rest of row 5, column D, and its region. Placing here also clears its 2 touching neighbours.
7. Following that, place a marker at E7. Region has exactly one open cell left. Placing here clears the rest of row 7, column E, and its region.
8. First, place a marker at G6. Region has exactly one open cell left. Placing here clears the rest of row 6, column G, and its region.
9. Finally, place a marker at C9. Region has exactly one open cell left.

This was an easy solve: every step followed directly from placing a marker and clearing its row, column and region. ∎