I found this explnation of "Go" on the Bicycle cards website https://bicyclecards.com/how-to-play/cribbage/
"THE GO During play, the running total of cards may never be carried beyond 31. If a player cannot add another card without exceeding 31, he or she says "Go" and the opponent pegs 1. After gaining the Go, the opponent must first lay down any additional cards he can without exceeding 31. Besides the point for Go, he may then score any additional points that can be made through pairs and runs (described later). If a player reaches exactly 31, he pegs two instead of one for Go. The player who called Go leads for the next series of plays, with the count starting at zero. The lead may not be combined with any cards previously played to form a scoring combination; the Go has interrupted the sequence. The person who plays the last card pegs one for Go, plus one extra if the card brings the count to exactly 31. The dealer is sure to peg at least one point in every hand, for he will have a Go on the last card if not earlier."
So my understanding is...
1) Non-dealer lays for first round of Play and cards are layed, counting as play proceeds. 2) If a player cannot add another card without exceeding 31, he or she says "Go" and the opponent pegs 1
What happens if the opponent can't lay a card to bring the score to either 31 or under 31? What happens if the oppponent lays a card and brings the total to under 31? What happens if the oppponent lays a card and brings the total to 31?
3) Spent cards are turned over as these can not count towards the next round of Play 4) The player who previously called Go leads for the next series of plays, with the count starting at zero.
What would happen if for example, the player who previously called "Go" has no cards to put down to lead?
Or what would happen if for example, the player who previously called "Go" is the only player with cards left?
Lead's cards to play = A,7,A,6/K Opponent's cards to play = 5,k,Q,Q
Lead A (1), Opp 5 (6), Lead 7 (13), Opp K (23), Lead A (24), Opp Go.
If Lead 6 (30) then lead pegs 1. Lead now has no cards to play. What happens at this point, as opponent has two Qs left?
However, say where Lead has a K to play instead of a 6, then
Lead A (1), Opp 5 (6), Lead 7 (13), Opp K (23), Lead Go.
At this point, the Opponent can't lay either Q. So are any points given?