[L is as odd about the way he decides to like or dislike someone as he is odd in every other way.]

I think it could well be the chipping.

[He glances up, listening to Oscar's reasoning and nodding his encouragement when the shrike proceeds. He watches, remembering the safe tiles as they're stepped on, and then a pattern does start to emerge.]

Good... that's good; thank you for clearing those! I see it, now.

[He stands, picking his way toward Oscar, choosing some of the same tiles; others are different and also do not result in an arrow firing.]

It's by row, and by color, and the chipped corners rotate counter-clockwise. It's staggered; if the last white one that fired an arrow was in the lower left-hand corner, in that row, then the next one will be in the upper-left. So... two to the left, kokichi, then four forward, step over the grey and proceed three right, two forward, then you can clear the rest with a jump, I'm sure.

[He tilts his chin to Oscar, brows raised, as if to ask if he'd like an easier path from where he stands, as well.]