Near the end of a game of Fish, Celia is playing against a team consisting of Alice and Betsy. Each of the three players holds two cards in their hand, and together they have the Nine, Ten, Jack, Queen, King, and Ace of Spades (this set of cards is known by all three players). Besides the two cards she already has, each of them has no information regarding the other two's hands (In particular, teammates Alice and Betsy do not know each other's cards). 

It is currently Celia's turn. On a player's turn, the player must ask a player on the other team whether she has a certain card that is in the set of six cards but [i]not[/i] in the asker's hand. If the player being asked does indeed have the card, then she must reveal the card and put it in the asker’s hand, and the asker shall ask again (but may ask a different player on the other team); otherwise, she refuses and it is now her turn. Moreover, a card may not be asked if it is known (to the asker) to be not in the asked person's hand. The game ends when all six cards belong to one team, and the team with all the cards wins. Under optimal play, the probability that Celia wins the game is $\frac{p}{q}$ for relatively prime positive integers $p$ and $q$. Find $100p+q$.

[i]Proposed by Yannick Yao[/i]
1. **Initial Setup**: Celia, Alice, and Betsy each hold two cards from the set {9, 10, J, Q, K, A} of Spades. Celia's goal is to collect all six cards by asking Alice or Betsy for cards she does not have. The game ends when one team has all six cards.

2. **Case Analysis**: We start by assuming Celia has the 9 and 10. Celia will ask Alice for the Jack (J).

3. **Case 1: Alice does not have the Jack (J)**:
   - Probability: \( \frac{1}{2} \)
   - If Alice does not have the J, Betsy must have it. It is now Alice's turn.
   - Alice must guess Celia's cards correctly to prevent Celia from winning. Alice has a \( \frac{1}{3} \) chance of guessing correctly.
   - Therefore, the probability that Celia wins in this case is:
     \[
     \frac{1}{2} \times \left(1 - \frac{1}{3}\right) = \frac{1}{2} \times \frac{2}{3} = \frac{1}{3}
     \]

4. **Case 2: Alice has the Jack (J)**:
   - Probability: \( \frac{1}{2} \)
   - Celia now has the J and must decide whether to ask Alice or Betsy next.
   - If Celia asks Betsy and fails, Alice's remaining card will be known, and Betsy can use this information to win. If Celia succeeds, she must guess the remaining cards correctly.

5. **Subcase 2a: Celia guesses Alice's remaining card correctly**:
   - Probability: \( \frac{1}{3} \)
   - Celia wins immediately.
   - Contribution to Celia's winning probability:
     \[
     \frac{1}{2} \times \frac{1}{3} = \frac{1}{6}
     \]

6. **Subcase 2b: Celia guesses Alice's remaining card incorrectly**:
   - Probability: \( \frac{2}{3} \)
   - Betsy now has the Queen (Q), and Alice must guess Betsy's remaining card correctly.
   - Alice has a \( \frac{1}{3} \) chance of guessing correctly.
   - Contribution to Celia's winning probability:
     \[
     \frac{1}{2} \times \frac{2}{3} \times \left(1 - \frac{1}{3}\right) = \frac{1}{2} \times \frac{2}{3} \times \frac{2}{3} = \frac{2}{9}
     \]

7. **Combining Probabilities**:
   - Total probability of Celia winning:
     \[
     \frac{1}{3} + \frac{1}{6} + \frac{2}{9} = \frac{6}{18} + \frac{3}{18} + \frac{4}{18} = \frac{13}{18}
     \]

The final answer is \( \boxed{ 100p + q = 100 \times 13 + 18 = 1318 } \)