Russian Grammar Cheat Sheet (DRAFT) by Lammmas

Gender is determined by the subject (I was speaking, She was eating)

If the stem ends in г, ж, к, х, ч, ш, or щ, you add и, not ы

If the stem ends in ж, ц, ч, ш, or щ, any unstressed o in an ending is instead written as e

If the word ends in -ний, such as синий (dark blue)

Accusative adjectives are direct objects of the verb, ex. 'I wrote a long letter'.

If the modified masculine noun is a person or animal, then use ого/его.
If the modified plural noun is a person or animal, then use ых/их.

If the adjective has the soft ending or ends in the 5-letter rule (ш, щ, ч, ж, ц), it ends in -его.