diff --git a/tetris/modes/big_a2.lua b/tetris/modes/big_a2.lua
index 3d69caf..86c5317 100755
--- a/tetris/modes/big_a2.lua
+++ b/tetris/modes/big_a2.lua
@@ -136,15 +136,16 @@ function MarathonA2Game:onLineClear(cleared_row_count)
 end
 
 function MarathonA2Game:updateScore(level, drop_bonus, cleared_lines)
+    if self.grid:checkForBravo(cleared_lines) then self.bravo = 4 else self.bravo = 1 end
     cleared_lines = cleared_lines / 2
     self:updateGrade(cleared_lines)
 	if cleared_lines > 0 then
 		self.score = self.score + (
-			(math.ceil((level + cleared_lines) / 4) + drop_bonus) *
-			cleared_lines * (cleared_lines * 2 - 1) * (self.combo * 2 - 1)
+			(math.ceil((level + cleared_lines) / 4) + 2 * drop_bonus) *
+			cleared_lines * self.combo * self.bravo
 		)
 		self.lines = self.lines + cleared_lines
-		self.combo = self.combo + cleared_lines - 1
+		self.combo = self.combo + 2 * (cleared_lines - 1)
 	else
 		self.drop_bonus = 0
 		self.combo = 1