Reading this maze
Quiet interlock starts at row 3, column 4. Of the 42 grid positions, 34 are paintable and 8 are walls. The start is already painted; the other 33 tiles remain to be reached.
Diamonds A at row 2, column 1 and row 1, column 7 toggle the gate marked A. Start right and stop at row 3, column 5. Either A diamond flips the same gate; use a return visit to change the next stopping point. The first slide covers 2 of 34 target tiles.
The verified opening crosses 1 tiles before stopping. A breadth-first search proves a 24-slide finish from this exact starting board; that is a reference target, not a move limit. You may revisit any painted tile.
Switch A is a diamond; gate A has bars when closed and a dashed outline when open. Entering the switch toggles it immediately, including during a slide. If you get trapped, undo or restart; Hint checks the current gate and painted-floor state.