That center looks to be impassable, what are all those Russians defending it for?
Grenadier: I guess the simple answer is the Saxons (I see you now know they are not Russians) are there because it is a historical battle and that is where they actually were.
But as you can hopefully see from the overview photo the Saxon/Poles were really quite packed in and so I am not sure there was any room for them anywhere else.
Also, as I believe also happened in the real battle, having 2 to 1 odds, massive artillery support and nice terrain to hide behind didn't save them. The Swedes stormed (in as far as you can over that terrain) over and were beating the defenders when the Saxon-Polish army failed their army morale test and fled the field
I can't claim any credit for the terrain/figures which were superb. The 6mm really make it look like a battle, which I am afraid it is difficult to do with 25mm. They are all made by one guy, Per a Swede living in exile in southern England, and he makes a new battle each year! Last year he did Fraustadt (1706) which was even more impressive. It was a snow battle and it loked cold - but then I guess a Swede should know about snow. Next year he will run Kalisz (1706) - Saxons, Russians, Poles (on both sides), Lithuanians (on both sides), Cossacks, Kalmucks and Swedes. Should be fun