Question 90
On an island there are 2023 people standing in single file, each of whom is either a knave or a knight: knights always tell the truth, while knaves always lie. If $i$ is odd, the person in the $i$-th position exclaims: "There are at least $i$ knaves"; if $i$ is even, the person in the $i$-th position exclaims: "There are exactly $i$ knaves". How many knaves are there?