Spain go into the game level on points with Croatia at the top of Group C, which means a point will guarantee their progress into the next round, whilst a 2-2 draw will see both sides go through at the expense of Italy.
However, Del Bosque has claimed the Spanish are only interested in another three points after a convincing 4-0 win over Ireland.
He told Marca:"I was happy because our objective was to win and we have done that.
"Moreover, we have managed to pass the margin by which Croatia beat Ireland and we did so by playing well. It is also important for the morale that this victory gives the group."We are sportsmen and the Croatians are as well, therefore we will go out to win.
"There is no possibility of planning a draw that favours us, I haven't even done the calculations. The only thing that interests us is winning."
The 62-year-old manager called Fernando Torres into his starting line-up ahead of Cesc Fabregas against the Irish and was delighted his decision was vindicated after the Chelsea striker scored twice.
Del Bosque says the Spanish are blessed with quality of the squad they possess, and also reiterated that Fabregas remains an integral part of his squad.
He continued: "The other day we had confidence in Cesc and he rewarded us with a goal, but Fernando [Torres] could also have played for precisely the reason of what he did against Ireland.
"We are delighted to be able to have such great resources.
"We intend to take advantage of all the possibilities. We have 23 players and all of them could play. We have to choose and leave out people for every game and this will create debate if you don't win.
"I have the same confidence in Cesc that I had four days ago, but we have other options.
"Against Ireland we looked to dominate and have the initiative and for that reason we went for the speed and movement of Torres."