Ipswich will be involved in a straight fight with Wigan for automatic promotion after a draw at Leeds.
Shefki Kuqi put Ipswich ahead after 11 minutes when his shot took a deflection off Gary Kelly and wrong-footed keeper Neil Sullivan.
Leeds equalised almost immediately as Matthew Spring headed home from Frazer Richardson's cross.
Kuqi was just off target before Darren Currie somehow missed an open goal from Darren Bent's cross in injury-time.
Leeds boss Kevin Blackwell:
"The lads have shown a great attitude and I am proud of them, particularly as we knew Ipswich would take a gamble and come at us.
"I said to the lads at half time that at some stage Ipswich would go hell for leather to get the win they needed.
"Our two centre-half's Clarke Carlisle and Matthew Kilgallon were superb."
Ipswich boss Joe Royle:
"It's us to a tee because we dominated the game, yet they have had one real attempt at goal and scored.
"The biggest disappointment is their goal coming straight after we have scored, which has happened too often.
"When the opposition get the ball, we have a number that don't think it's in their contracts to get it back."
Leeds: Sullivan, Kelly, Carlisle, Kilgallon, Gray, Einarsson (Walton 67), Gregan, Spring, Richardson (King 89), Hulse, Moore, Walton (Wright 69).
Subs Not Used: Pugh, Lennon. Goals: Spring 12.
Ipswich: Price, Wilnis, De Vos, Naylor, Unsworth (Diallo 63), Miller, Horlock (Westlake 55), Magilton, Kuqi, Bent, Counago (Currie 71).
Subs Not Used: Supple, Scowcroft.
Booked: Bent.
Goals: Kuqi 11.
Att: 29,607
Ref: C Webster (Tyne & Wear).