remove bounds check for first neighbour.

day-04/internal/one/solve.go

@@ -20,10 +20,6 @@ func Solve(buf []byte) (int, error) {
 			current := newPoint(j, i)
 			if graph.valueAt(current) == 'X' {
 				for _, n := range neighbours(current) {
-					if graph.isOutOfBounds(n) {
-						continue
-					}
-
 					if checkNeighbours(graph, n, "MAS") {
 						sum++
 					}