
This expensive addition is described as a “custom preflop solver for up to 9 players” that “lets you study the game you actually play.” But it doesn’t allow for overcalls.
If, for example, UTG opens and LJ flats, the multiway solver doesn’t allow anyone from HJ through to the SB to flat as well. Not only is this not ‘the game we actually play’ – as we see overcalls all the time – it isn’t even GTO. In a rakeless tournament enviroment with antes, if UTG opens and LJ flats, HJ has calls, CO has calls, BTN has calls, SB has calls. It’s bizarre to have a multiway preflop solver limited to HU in SRPs. More than bizarre – it simply isn’t a multiway solver.

It’s not limited to HU, but to 3-way flops, since the solver can currently simulate postflop situations with up to three players only.

Yes, but one one of those players has to be the BB. If I want to have UTG open, have LJ flat much wider than they should, and then see how that should change HJ through SB’s action I can’t because none of those positions have the ability to call once there’s been an RFI and a single call.
So no, it’s not literally limited to HU in 2bet pots, but it’s certainly not a 9-player customizable multiway preflop solver when you can’t even have a person other than the BB overcall in a 2bet pot.
Postflop, yeah, you can solve for any 3-way combination, but that isn’t what I’m talking about.
The same thoughts. I hope they will add overcalls.

Adding 2-3 calls would make the tree much much larger but I still think it is important to add at some point.