How to fit beadboard under cabinets

[gromit42x]

Hello

I'm installing beadboard on the kitchen wall in the cabin where there are already existing cabinets in place. I want to get the beadboard a bit under the cabinets and avoid using moldings to hide seams.

What's the easiest way to slide the beadboard a bit under the right cabinets when installing from left to right?

It's difficult to get the last board under the cabinet and then slide it back into the groove of the previous board.

Can I remove the back tongue on the last board and lay it on top, nailing it "from the front"?

 

[useless]

Can you remove the rear spring of the last board and lay it on top and nail it "from the front"?

Yes.

 

[gromit42x]

I removed the spring from the short piece that mostly ends up behind the window trim. I assembled the last three boards in advance and nailed everything from the front.