Match ends, Nottingham Forest 0, Brighton and Hove Albion 0.
Nottingham Forest lost their place at the top of the Championship as Brighton earned a deserved point in an entertaining game of few chances.
The hosts began encouragingly but struggled against a resolute Seagulls side, who defended superbly.
Forest's Michael Mancienne came closest to scoring in second-half injury time when his downward header went over.
At the other end, Craig Mackail-Smith was unlucky not to score with a glancing header before the break.
But neither side were able to create much in the way of clear openings and Norwich's 3-1 victory over Blackpool means Forest slip down to second in the table - a point behind the leaders - following a second successive scoreless draw.
Brighton also played out a second 0-0 draw in a row but will take more from the score than the hosts, who failed to find their fluent best on a frustrating afternoon.
They had the better of the first half, with Henri Lansbury heading a good chance wide from a Danny Cox cross and top-scorer Britt Assombalonga firing wide after a defensive lapse.
Robert Tesche also went close with three decent chances, the third of which produced a fine save from Brighton goalkeeper David Stockdale.
Adrian Colunga shot straight at Reds keeper Karl Darlow for Brighton, while Mackail-Smith went close with chances either side of the interval.
But although Mackail-Smith then also saw a deflected shot go wide, Forest, who remain unbeaten in the league, had the better of things in the second period.
Substitute Lars Veldwijk hit the side netting when well placed and Mancienne, who almost put through his own net early in the second half, should have won it in stoppage time.
But the defender powered a free header from Ben Osborn's corner into the turf and over the bar from six yards.
Nottingham Forest manager Stuart Pearce: "The players know that the performance levels need to be improved on massively.
"We did not do enough going forward to hurt the opposition and we have to learn that lesson. Brighton had a passing game and kept possession well - for far too long, in my opinion."
Brighton manager Sami Hyypia: "I am very happy with the clean sheet, but if you want to win games, you have to score goals and today, we could not create enough.
"The players are still understanding what we want from them. We need to work with them and hopefully it will soon be working better than it was."
- 13FoxBooked at 40mins
- 32TescheBooked at 55minsSubstituted forPatersonat 61'minutes
- 10LansburySubstituted forVeldwijkat 77'minutes
- 18AntonioSubstituted forGrantat 88'minutes
- 29de Vries
- 30BennettBooked at 52mins
- 22HollaSubstituted forInceat 64'minutesBooked at 85mins
- 18Forster-CaskeySubstituted forGardnerat 88'minutes
- 7ColungaBooked at 79minsSubstituted forMcCourtat 87'minutes
- 25Lua Lua
- 17Vilaca Teixeira
- Robert Madley
- Shots on Target
Second Half ends, Nottingham Forest 0, Brighton and Hove Albion 0.
Offside, Brighton and Hove Albion. Paddy McCourt tries a through ball, but Craig Mackail-Smith is caught offside.
Attempt blocked. Gary Gardner (Brighton and Hove Albion) right footed shot from outside the box is blocked. Assisted by Paddy McCourt.
Attempt missed. Michael Mancienne (Nottingham Forest) header from the left side of the box is too high. Assisted by Ben Osborn with a cross following a corner.
Corner, Nottingham Forest. Conceded by Joe Bennett.
Attempt blocked. Jamie Paterson (Nottingham Forest) right footed shot from a difficult angle and long range on the left is blocked. Assisted by Jorge Grant.
Offside, Brighton and Hove Albion. Joe Bennett tries a through ball, but Craig Mackail-Smith is caught offside.
Substitution, Nottingham Forest. Jorge Grant replaces Michail Antonio.
Substitution, Brighton and Hove Albion. Gary Gardner replaces Jake Forster-Caskey.
Lewis Dunk (Brighton and Hove Albion) wins a free kick in the defensive half.
Foul by Michail Antonio (Nottingham Forest).
Substitution, Brighton and Hove Albion. Paddy McCourt replaces Adrián Colunga.
Attempt missed. Daniel Fox (Nottingham Forest) left footed shot from outside the box is high and wide to the right from a direct free kick.
Rohan Ince (Brighton and Hove Albion) is shown the yellow card for a bad foul.
Foul by Rohan Ince (Brighton and Hove Albion).
Chris Burke (Nottingham Forest) wins a free kick in the attacking half.
Attempt missed. Craig Mackail-Smith (Brighton and Hove Albion) right footed shot from the left side of the box is close, but misses to the right. Assisted by Jake Forster-Caskey with a through ball.
Attempt missed. Andrew Crofts (Brighton and Hove Albion) header from the centre of the box misses to the right. Assisted by Joe Bennett with a cross.
Kazenga Lua Lua (Brighton and Hove Albion) wins a free kick in the attacking half.