Well.... snooker is very much a game of adjustments (since I'm not a pro) and thus play the positions available. I originally thought playing on the red to the left of the pink in the yellow pocket after the green (open up the pink and the two reds near it) but left the perfect angle to take the red next to the black and open up the black spot. I was once again trying to get on that red after the second black but ended up straight so all I had was the stun run through to the tough red along the cushion. Once again I left myself a straight black so I play for the red by the side cushion into the side pocket and leaving myself indeed on the blue to split the pack. The cue ball bounces a little far, so the centre pocket shot is out and I have to take it long. Playing to the blue ball would leave the cueball near the side cushion, making it a lot harder to split the reds, so I opt for a hard stun screw to the black thinking I could probably get on a red to one of the baulk pockets. I did, but missed the shot. Next would have been the pink with a cannon on the red left of it and perhaps run the table. Alas, it wasn't meant to be.
Hope that helps explaining my decision making process