Name changed, posting for traffic.
So the history is A + B are getting married, A has 3 school age children (A1, A2, A3), B has two adult children (B1 and B2)
B moves in with A and A children into A house.
Fast forward 10 years A + B are getting divorce.
In meantime
B1 got 2 bed flat after B moved to A and still lives there
B2 bought own 1 bed flat and is paying mortgage
A1 got 2 bed flat from A
A2 got 1 bed flat from A
A3 got 5% towards the house deposit and is paying mortgage
Now A wants to sell the house which A owns plus A children have shares in it.
Now B is saying B wants a share of the house which legally B doesnt have but lived in the house 10years and also wants something for B children.
The split of flats is already not equal before A + B were even getting divorce.
How would you share it?
This is not UK.