Open A6s UTG, but on 2s5d6s multiway we should mostly check; once BU bets turn, folding is reasonable but calling is defensible given the price.
Flop 2s5d6s in a multiway pot is very dynamic and favors the callers’ suited and connected holdings. Solver prefers a lot of checking here, with a small c-bet mix. Our 4.3BB bet is a bit too big and polarizes us on a board where we don’t have a huge range advantage; a small stab or check would be more efficient.
Note: C-bet sizing is too large on a multiway, draw-heavy board; prefer a small bet or check with this hand.
The Js on the turn is a big draw card: it improves BU’s range (Jx, sets, overpairs, spade draws) while our hand is just a medium-strength bluff-catcher. With SPR ≈1, checking turn is standard—our hand doesn’t want to face a raise, and we don’t gain much by betting into BU’s strong, condensed range.
Facing BU’s 17.2BB bet into 16.6BB, we’re getting about 3:1 and need ~25% equity; A6s has roughly that versus a range that includes a lot of bluffs and thin value. Solver leans toward folding, but calling is defensible given the price.