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 | Date | Team | Score | High points | High rebounds | High assists | Location Attendance | Record |
| --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1.0 | April 18 | Chicago | L 103–105 (OT) | Rajon Rondo (29) | Rajon Rondo (9) | Rajon Rondo (7) | TD Banknorth Garden 18,624 | 0–1 |
| 2.0 | April 20 | Chicago | W 118–115 (OT) | Ray Allen (30) | Rajon Rondo , Kendrick Perkins (12) | Rajon Rondo (16) | TD Banknorth Garden 18,624 | 1–1 |
| 3.0 | April 23 | @ Chicago | W 107–86 (OT) | Paul Pierce (24) | Rajon Rondo (11) | Glen Davis , Stephon Marbury (6) | United Center 23,072 | 2–1 |
| 4.0 | April 26 | @ Chicago | L 118–121 (2OT) | Paul Pierce (29) | Glen Davis (12) | Rajon Rondo (11) | United Center 23,067 | 2–2 |
| 5.0 | April 28 | Chicago | W 106–104 (OT) | Rajon Rondo (28) | Kendrick Perkins (19) | Rajon Rondo (16) | TD Banknorth Garden 18,624 | 3–2 |
| 6.0 | April 30 | @ Chicago | L 127–128 (3OT) | Ray Allen (51) | Kendrick Perkins (13) | Rajon Rondo (19) | United Center 23,430 | 3–3 |
Question:
What team(s) did they play on april 23?
Answer:
@ Chicago