-- Recursive function to dig a line
function digLine(blocks)
    if blocks == 0 then
        return
    else
        -- Check if there is a block to dig
        if turtle.detect() then
            turtle.dig()
        end
        -- Move forward
        if turtle.forward() then
            digLine(blocks - 1)  -- Recurse for the next block
        else
            -- If the turtle can't move forward, it might be because it needs to dig or because it's out of fuel
            if not turtle.dig() then
                print("Turtle is unable to move forward and can't dig. Check for obstacles or refuel.")
                return
            end
            -- Try to move forward again after digging
            if turtle.forward() then
                digLine(blocks - 1)
            else
                print("Turtle is really stuck and can't move forward after digging. Check for obstacles.")
                return
            end
        end
    end
end

-- Recursive function to dig the entire field
function digField(length, width)
    if width == 0 then
        return
    else
        -- Dig a line
        digLine(length)
        -- Turn around to start the next line
        if width % 2 == 0 then
            turtle.turnLeft()
            if turtle.forward() then
                turtle.turnLeft()
            else
                return -- End if the turtle cannot move to start a new line
            end
        else
            turtle.turnRight()
            if turtle.forward() then
                turtle.turnRight()
            else
                return -- End if the turtle cannot move to start a new line
            end
        end
        -- Recurse for the next line
        digField(length, width - 1)
    end
end

-- Start the digging process
digField(6, 6)