Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Game | January | Opponent | Score | Record |
| --- | --- | --- | --- | --- |
| 37.0 | 1.0 | @ Boston Bruins | 2 - 1 | 11-20-6 |
| 38.0 | 3.0 | Montreal Canadiens | 4 - 3 | 12-20-6 |
| 39.0 | 6.0 | Chicago Black Hawks | 4 - 3 | 13-20-6 |
| 40.0 | 10.0 | Toronto Maple Leafs | 4 - 1 | 14-20-6 |
| 41.0 | 13.0 | Detroit Red Wings | 3 - 1 | 14-21-6 |
| 42.0 | 14.0 | @ Chicago Black Hawks | 2 - 0 | 15-21-6 |
| 43.0 | 16.0 | @ Toronto Maple Leafs | 4 - 0 | 15-22-6 |
| 44.0 | 17.0 | @ Detroit Red Wings | 3 - 2 | 16-22-6 |
| 45.0 | 20.0 | Boston Bruins | 8 - 3 | 17-22-6 |
| 46.0 | 23.0 | @ Boston Bruins | 4 - 3 | 18-22-6 |
| 47.0 | 24.0 | @ Boston Bruins | 2 - 1 | 18-23-6 |
| 48.0 | 28.0 | @ Detroit Red Wings | 3 - 3 | 18-23-7 |
| 49.0 | 30.0 | @ Montreal Canadiens | 2 - 1 | 19-23-7 |
Question:
Who was the opponent with the record of 15-21-6?
Answer:
@ Chicago Black Hawks