What happens when a pool miner's solution meets the full network difficulty?

When a pool miner's solution happens to be strong enough to satisfy Kaspa's global difficulty threshold, the pool publishes the completed block to the network and distributes the block reward to all miners who were searching at that time. Normally, the pool gives each miner a lower, easier difficulty target so that solutions come in frequently and the pool can measure each miner's contribution. By probability, some of those solutions will far exceed even the network's harder threshold — those are the actual valid blocks. Because the pool handles the submission, the reward goes to the pool first and is then split among participating miners according to the pool's stated rules. This is why choosing a pool with transparent payout rules matters: your share of every block the pool wins depends on those rules.