diff --git a/examples/tetris/tetris.v b/examples/tetris/tetris.v
index 1c7c6724e8..baf87ed3b4 100644
--- a/examples/tetris/tetris.v
+++ b/examples/tetris/tetris.v
@@ -179,11 +179,9 @@ fn (mut g Game) init_game() {
 		row[field_width + 1] = -1
 		g.field << row
 	}
-	mut first_row := g.field[0]
-	mut last_row := g.field[field_height + 1]
 	for j in 0 .. field_width + 2 {
-		first_row[j] = -1
-		last_row[j] = -1
+		g.field[0][j] = -1
+		g.field[field_height + 1][j] = -1
 	}
 	g.score = 0
 	g.lines = 0
@@ -284,8 +282,7 @@ fn (mut g Game) delete_completed_lines() {
 
 fn (mut g Game) delete_completed_line(y int) {
 	for x := 1; x <= field_width; x++ {
-		f := g.field[y]
-		if f[x] == 0 {
+		if g.field[y][x] == 0 {
 			return
 		}
 	}
@@ -294,9 +291,7 @@ fn (mut g Game) delete_completed_line(y int) {
 	// Move everything down by 1 position
 	for yy := y - 1; yy >= 1; yy-- {
 		for x := 1; x <= field_width; x++ {
-			mut a := g.field[yy + 1]
-			b := g.field[yy]
-			a[x] = b[x]
+			g.field[yy + 1][x] =  g.field[yy][x]
 		}
 	}
 }
@@ -361,9 +356,8 @@ fn (g &Game) draw_block(i int, j int, color_idx int) {
 fn (g &Game) draw_field() {
 	for i := 1; i < field_height + 1; i++ {
 		for j := 1; j < field_width + 1; j++ {
-			f := g.field[i]
-			if f[j] > 0 {
-				g.draw_block(i, j, f[j])
+			if g.field[i][j] > 0 {
+				g.draw_block(i, j, g.field[i][j])
 			}
 		}
 	}