Two players, \(A\) (first player) and \(B\), take alternate turns in playing a game using 2016 chips as follows: [i]the player whose turn it is, must remove \(s\) chips from the remaining pile of chips, where \(s \in \{ 2,4,5 \}\)[/i]. No one can skip a turn. The player who at some point is unable to make a move (cannot remove chips from the pile) loses the game. Who among the two players can force a win on this game?
To determine which player can force a win, we need to analyze the game using the concept of winning and losing positions. A winning position is one where the player whose turn it is can force a win, while a losing position is one where the player whose turn it is will lose if the opponent plays optimally.

1. **Base Cases:**
   - If there are 0 chips left, the player to move loses because they cannot make a move. Thus, 0 is a losing position.
   - If there are 2, 4, or 5 chips left, the player to move can take all the chips and win. Thus, 2, 4, and 5 are winning positions.
   - If there are 1 or 3 chips left, the player to move cannot take a valid number of chips (since they must take 2, 4, or 5 chips). Thus, 1 and 3 are losing positions.

2. **Inductive Step:**
   - Assume we know the winning and losing positions up to some number \( n \). We need to determine the status of \( n+1 \).
   - If \( n+1 \) is a losing position, then the player to move cannot force a win. This means that for all possible moves \( s \in \{2, 4, 5\} \), the resulting position \( n+1-s \) must be a winning position.
   - Conversely, if \( n+1 \) is a winning position, then there must be at least one move \( s \in \{2, 4, 5\} \) such that the resulting position \( n+1-s \) is a losing position.

3. **Pattern Recognition:**
   - By examining the positions modulo 7, we can identify a pattern:
     - \( 0 \mod 7 \) is a losing position (as shown by the base case).
     - \( 1 \mod 7 \) is a losing position (as shown by the base case).
     - \( 2 \mod 7 \) is a winning position (as shown by the base case).
     - \( 3 \mod 7 \) is a losing position (as shown by the base case).
     - \( 4 \mod 7 \) is a winning position (as shown by the base case).
     - \( 5 \mod 7 \) is a winning position (as shown by the base case).
     - \( 6 \mod 7 \) is a winning position (as shown by the base case).

4. **Generalization:**
   - We can generalize this pattern to all numbers:
     - \( 7k \) and \( 7k+1 \) are losing positions.
     - \( 7k+2, 7k+3, 7k+4, 7k+5, 7k+6 \) are winning positions.

5. **Application to 2016 Chips:**
   - We need to determine the position of 2016 modulo 7:
     \[
     2016 \mod 7 = 0
     \]
   - Since 2016 is equivalent to 0 modulo 7, it is a losing position.

6. **Conclusion:**
   - Since 2016 is a losing position, the first player \( A \) will lose if both players play optimally. Therefore, player \( B \) can force a win.

The final answer is \( \boxed{ B } \) can force a win.