Ratkomme arvoitusta yhdessä.

Ratkomme is the 1st person plural present tense form of ratkoa.

• ratkoa = to work on solving, to figure out, to solve
• -mme = we

So ratkomme means we solve or we are solving.

Finnish present tense often covers both English simple present and present progressive, so the same form can mean either depending on context.

This is a very natural question, because both verbs are related.

• ratkaista = to solve, to resolve
• ratkoa = to work through solving, to solve bit by bit, often used for things like puzzles, riddles, crosswords, problems

So ratkoa has a more process-oriented feel. It often suggests that someone is actively trying to figure something out, not just stating the final result.

In a sentence about a riddle, ratkoa sounds very natural because a riddle is something you typically work on.

Because Finnish verbs already show the subject clearly.

In ratkomme, the ending -mme already means we, so the pronoun me is usually unnecessary.

You can say:

• Ratkomme arvoitusta yhdessä.
• Me ratkomme arvoitusta yhdessä.

Both are grammatical, but the version without me is very normal. The pronoun me is often added only for emphasis, contrast, or clarity.

Because it is the object of the verb, and here it is in the partitive singular.

The basic form is:

• arvoitus = riddle

In the sentence, it becomes:

• arvoitusta = riddle, in the partitive singular

So the sentence is not using the plain dictionary form of the noun, but an object form required by the meaning and structure.

The partitive often shows that the action is ongoing, incomplete, or seen as a process.

So:

• Ratkomme arvoitusta = we are working on the riddle / solving the riddle
• a total-object form such as arvoituksen would sound more like the whole riddle is treated as a completed result

Because ratkoa already emphasizes the process of solving, the partitive fits very naturally here.

This is a very common Finnish pattern:

• Luen kirjaa = I am reading a book / the book, in progress
• Luen kirjan = I will read the whole book through

It is singular.

Even though the form may look unfamiliar, arvoitusta means a riddle / the riddle in the partitive singular, not plural.

A plural partitive would be:

• arvoituksia = riddles

So in your sentence, there is just one riddle being worked on.

This is just a normal noun inflection pattern in Finnish.

The dictionary form is:

• arvoitus

Its partitive singular is:

• arvoitusta

Many Finnish nouns change their stem when endings are added, so you cannot always just attach an ending directly to the dictionary form.

Useful forms are:

• arvoitus = nominative
• arvoituksen = genitive
• arvoitusta = partitive

So this is something you gradually get used to as you learn noun types.

Yhdessä is an adverb meaning together.

It tells you how the action is done:

• Ratkomme arvoitusta yhdessä. = We are solving the riddle together.

It does not mark the subject or object; it simply adds the idea that the action is shared.

Yes. Finnish word order is more flexible than English word order.

This sentence is perfectly natural:

• Ratkomme arvoitusta yhdessä.

But you could also say:

• Ratkomme yhdessä arvoitusta.
• Yhdessä ratkomme arvoitusta.

The basic meaning stays the same, but the emphasis can shift slightly depending on which word comes first or where yhdessä is placed.

Finnish does not have a separate form exactly like English are solving.

The form ratkomme is just present tense, and context tells you whether it means:

• we solve
• we are solving

In this sentence, the combination of the context and the partitive object arvoitusta strongly suggests an ongoing action, so English often translates it as we are solving.

Finnish has no articles, so there is no separate word for a or the.

That means arvoitusta can correspond to:

• a riddle
• the riddle

The exact meaning comes from context.

So Finnish learners need to get used to the idea that article information is usually understood from the situation rather than marked directly in the noun.