After playing for a bit, I started to wish for a way to mark cells as done. Then I soon realized it was already implemented, as a right click. Unfortunately, ri

After playing for a bit, I started to wish for a way to mark cells as done. Then I soon realized it was already implemented, as a right click. Unfortunately, right clicking on my Apple Magic Mouse is notoriously unreliable, so instead I developed an interesting new approach to solving. I force myself to fix each cell as I scan the board from top to bottom, left to right. I thus have to visualize how my choices unfold downward, in search of clues, or ideally proofs, for how best to proceed. This manner of play reminds me a bit of the "reading" one does in the game of Go to explore variations before placing one's stone. I hope other people find this more constrained version of interest as well...