What’s the goal in the lighthouse puzzle (and how to achieve it)

So here's how it works:

• V blocks make a block in the direction of the V
• T block make a block above
• <3 blocks power up all adjacent blocks
• ---> blocks move the row below along one
• | blocks move the row to the left up one
• # indicates how many charges a block has

The first few clicks should be:

1. Click the V/T block, then expand out the chain of Vs to get the --->.
2. Make a T block by clicking the centre block
3. Move the T block along to be one block to the left underneath the ?? block
4. Click it, and expand to get a <3
5. Click the <3 to charge
6. Move it along one again and expand. You now have two adjacent <3 blocks to make an 'engine'

You can now expand out the rest of the area using the same method. You should end up with two ---> blocks, and one |. You can use these blocks to move around the movement blocks so you can move an engine underneath the ?? block.

Power it up to win.