| NIM | Ancient game of mathematical strategy, commonly using matchsticks (3) |
| TAG | Primarily the ancient game of chase (3) |
| BATTLEDORE | A hornbook; an old paddle for washing clothes etc; or, a racquet for striking a shuttlecock in an ancient game of the same name (10) |
| SET | Ready for collection of mathematical entities (3) |
| QED | Letters near the end of mathematical proofs |
| SPT | Type of mathematical graph |
| MEN | Featured star's 2003 movie, "Matchstick -" |
| CON | Crime in "Matchstick Men" and "Catch Me If You Can" |
| TINKERTAILORSOLDIERSPY | Rascal adapts ancient game without hesitation in book (6,6,7,3) |
| FARO | Said to be a royal and ancient game |
| GO | Which ancient game uses a grid board with black and white counters? (2) |
| REALTENNIS | Remarkably silent, near ancient game |
| GOLDFISHBOWLS | Good angle, taking in ancient game where all can see (8,5) |
| CATSCRADLE | Tom's crib was remodelled for an ancient game (4,6) |
| OLYMPIA | Scene of ancient games (7) |
| CHESS | Ancient game which originated in India and is now an international sport - Viswanathan Anand is the |
| BACKGAMMONBOARD | What ancient game is played on used to keep spine straight around cured limb (10,5) |
| NEMEA | Site of ancient games |
| LOCUS | From "place", the site or scene of any happening or crime; the position of a gene on a chromosome; a set of mathematical points; a passage in writing; or, whereabouts generally (5) |
| EQUATION | End of line and circle in quaint sort of mathematical statement (8) |
