This may be a short discussion but I wanted to ask this anyway as I'm not sure myself.

So let's say we have a set of GTO opening ranges for various blind sizes and various positions taken from GTO Wizard.

If we are playing in a Turbo tournament should that affect our boundary hands?

Part of me thinks that the round times are irrelevant since our ranges will change when the blinds change.

However another part of me thinks that if the blinds are increasing quickly then we should maybe be widening our opening ranges.

Which is correct?

I've wondered about this myself. I think some players would argue that +EV is +EV, but here's a real world example where I think a "-EV" play is likely the best play due to the time factors, meaning its expectation is likely higher than the alternatives.

You are UTG+1. You have a 6 BB stack. You are dealt A7o, which according to the chart I referenced is a marginal fold. On average it is likely losing a small fraction of a BB each time you shove this hand: perhaps -.03 BB or something. I don't have the exact number, but according to a push fold chart A8o is a shove and A7o is a fold. So it should be a fold right? But also consider the following:

As I said you have 6 BBs. There is less than one minute remaining before the blind level goes up. In two hands you will be in the big blind, at a higher blind level, and almost half of your stack will be going in blind between the BB and BB ante, leaving you with something like 2 BB.

I would think shoving with A7o and utilizing the last little bit of leverage you have in addition to the hand value likely has a higher expectation compared to folding, knowing you are about to be in the BB. A slight -EV option is preferable to a more extreme -EV option of just waiting and blinding out.

This might be an extreme example, but if true it would suggest that the optimal strategy could be effected by the time structure.

I don't have any proof, but I suspect that if you simulated millions of tournaments between bots that an extreme turbo structure might lead to the bots slightly widening their ranges, similarly to the example given above.

Time pressure might cause you to take a -EV option because there is a low probability of a better option arising before you blind out.

Anyway those are my thoughts, but I have no mathematical proof. I'm interested to read any other perspectives.

Future hands and blinds definitely affect how we should play our current hand.

https://www.icmizer.com/en/blog/how-...culator-works/