diff --git a/src/main/c/Minesweeper/minesweeper_start.c b/src/main/c/Minesweeper/minesweeper_start.c
index 9122211..f9131fb 100644
--- a/src/main/c/Minesweeper/minesweeper_start.c
+++ b/src/main/c/Minesweeper/minesweeper_start.c
@@ -163,7 +163,7 @@ Minesweeper_Board initialize_minesweeper(){
     board.tiles = (int*) malloc(width * height * sizeof(int));
     for(int i = 0; i < width * height; i++){board.tiles[i] = BLOCK;}
     board.marked = (int*) malloc(width * height * sizeof(int));
-    for(int i = 0; i < width * height; i++){board.marked[i] = 0;}
+    for(int i = 0; i < width * height; i++){board.marked[i] = -1;}
     board.num_bombs = num_bombs;
     board.bombs = (int*) malloc(board.num_bombs * sizeof(int));
     for(int i = 0; i < num_bombs; i++){board.bombs[i] = -1;}
@@ -239,7 +239,7 @@ void open_empty_space(Minesweeper_Board *board, int tile, int index){
         if(check_tile == -1){continue;}
         int sum = open_tile(board, check_tile);
         if(sum != 0){board->tiles[check_tile] = sum + 48;}
-        else if(!array_contains_value(board->marked, check_tile, index + 1)){open_empty_space(board, check_tile, index + 1);}
+        else if(!array_contains_value(board->marked, check_tile, board->height * board->width)){open_empty_space(board, check_tile, index + 1);}
     }
 }
 
@@ -250,7 +250,7 @@ int is_Valid_tile(Minesweeper_Board *board, int tile, int i){
     else{check_tile -= 1;}}
     if(i > 4){if(tile % board->width + 1 == board->width){return -1;}
     else{check_tile += 1;}}
-    if(i % 3 == 0){if(i != 0 && tile / board->width == 0){return -1;}
+    if(i % 3 == 0){if(tile / board->width == 0){return -1;}
     else{check_tile -= board->width;}}
     if(i % 3 == 1){if(tile / board->width + 1 == height){return -1;}
     else{check_tile += board->width;}}