Fixing show solutions

script/show_solutions

@@ -15,7 +15,7 @@ function possible_solutions {
  echo "$sol exit the script"
  echo -e "\033[1;34;5mChoose the solution:\033[0m"
  if [ $sq -eq 1 ]; then
-   if [ -f cat default_choice ]; then
+   if [ -f default_choice ]; then
      choose=$(cat default_choice)
    else
      echo "No solution choosen, continue ... "