diff --git a/day16/floorWillBeLava.go b/day16/floorWillBeLava.go
index b5bfd4e..7862176 100644
--- a/day16/floorWillBeLava.go
+++ b/day16/floorWillBeLava.go
@@ -12,7 +12,7 @@ import (
 func Run() int {
 	fmt.Println("hello from day 16")
 	log.Println("starting")
-	filename := "day16/example"
+	filename := "day16/input"
 	field := ReadField(filename)
 	startPoints := StartPoints(&field)
 
@@ -194,7 +194,7 @@ func (f *Field) CountEnergized() (result int) {
 func (f *Field) RecordVisits(reportedPoints <-chan MovementPoint) {
 	for point := range reportedPoints {
 		cell := f.cells[point.Row][point.Col]
-		log.Printf("recording visit %+v to %+v at row %d col %d\n", point, cell, point.Row, point.Col)
+		// log.Printf("recording visit %+v to %+v at row %d col %d\n", point, cell, point.Row, point.Col)
 		cell.KnownBeams[point.Direction] = struct{}{}
 	}
 }
@@ -203,7 +203,7 @@ func (f *Field) RecordVisits(reportedPoints <-chan MovementPoint) {
 // move (concurrently if required) into next points
 // ends - when out of the field, or if encountering a cycle
 func (f *Field) TraverseFrom(current MovementPoint, reportVisits chan<- MovementPoint, wg *sync.WaitGroup) {
-	log.Printf("> starting traverse through %+v", current)
+	// log.Printf("> starting traverse through %+v", current)
 	if !f.isValid(current) {
 		log.Println("invalid current ", current, " should be impossible")
 		wg.Done()
@@ -212,7 +212,7 @@ func (f *Field) TraverseFrom(current MovementPoint, reportVisits chan<- Movement
 	cell := f.cells[current.Row][current.Col]
 	_, knownDirection := cell.KnownBeams[current.Direction]
 	if knownDirection {
-		log.Printf("found cycle at %+v in %+v", current, cell)
+		// log.Printf("found cycle at %+v in %+v", current, cell)
 		wg.Done()
 		return
 	}
@@ -220,7 +220,7 @@ func (f *Field) TraverseFrom(current MovementPoint, reportVisits chan<- Movement
 	reportVisits <- current
 
 	nextPoints := NextPoints(f, current)
-	log.Printf("for current %+v next are: %+v\n", current, nextPoints)
+	// log.Printf("for current %+v next are: %+v\n", current, nextPoints)
 	switch len(nextPoints) {
 	case 0:
 		wg.Done()