An injury-time equaliser from Henri Lansbury kept Forest in fifth place in the Championship and preserved their unbeaten run under Billy Davies.
Brighton, who moved into the play-off places with their point, went ahead as Leonardo Ulloa slotted in 12 yards out.
Substitute Lewis McGugan squeezed in the equaliser from a tight angle but Ulloa set up Will Buckley to put Albion ahead again with five minutes to go.
However, Lansbury earned a draw with a 25-shot that Casper Ankergren fumbled.
Having won six games in succession under Davies in his second spell at the helm, Forest had the better of things in the opening period, Lansbury's neat one-two with Simon Cox on the edge of the box forcing Ankergren into a parrying save after six minutes.
The Danish goalkeeper made a series of stops to thwart the home side, keeping out Radoslaw Majewski when he looked certain to score from just six yards out.
But the visitors were much improved after the break, Ulloa cutting infield from the left and curling a shot narrowly wide.
Ulloa then saw a volley headed off the line by Danny Collins after Forest keeper Karl Darlow failed to hold Andrea Orlandi's free-kick.
Davies inspires Forest revival
Forest are now unbeaten in seven matches under Billy Davies
The Argentine finally found the net when he converted a loose ball from a corner before Forest increased the pressure and McGugan conjured their first equaliser.
Three minutes later Brighton were ahead again as Ulloa controlled the ball on the penalty spot and laid it back to Buckley who placed a low shot past Darlow.
Ankergren blocked Billy Sharp's close-range effort but Lansbury's speculative effort squirmed underneath him as the points were shared.
Nottingham Forest manager Billy Davies:
"We got a break at the end with the second goal but we needed it in the first half when we were so much on top. Had it been a boxing match it would have been stopped.
"If we had gone in one or two goals up it wouldn't have flattered us but even though we were frustrated we kept driving on to the end. This team has many qualities but there is a great spirit in there and they were determined to get a result out of it. Even when we had got it to 2-2 we were still trying to win the game.
"We've not got the win we were looking for but we have put ourselves in a good position considering I was being asked to save the club from relegation when we came in.
"There have been a lot of strange results this weekend and they will continue in the coming weeks because that's what happens at this stage of a season."
Brighton boss Gus Poyet:
"To begin with I thought the [Lansbury] shot must have taken a deflection but when I've seen it again I nearly killed myself!
"When you are a keeper you pay the price and Casper has done that today. He was having a very, very good game, making two or three good saves, coming for crosses and kicking very well. In training he will save a 1,000 shots like that but we wanted him to save it today.
"Goalkeeper is a terrible position to play but we lose together and we win together - at least we got a point.
"At half-time we didn't look like getting that because we were very poor in the first half. I wasn't happy but we were much better in the second half and had a very good chance to win the game ... and almost did."
- 12 Darlow
- 02 Hutchinson (Jara - 68' )
- 05 Collins Booked
- 08 Cohen
- 32 Ward
- 07 Guedioura (Sharp - 79' )
- 11 Reid
- 22 Lansbury Booked
- 28 Majewski Booked (McGugan - 73' )
- 09 Henderson
- 19 Cox
- 31 Evtimov
- 15 Halford
- 36 Jara
- 06 Moussi
- 10 McGugan
- 23 Blackstock
- 24 Sharp
Brighton & Hove Albion
- 16 Ankergren Booked
- 03 Greer
- 14 Calderon
- 20 Upson
- 28 Bridge
- 08 Crofts
- 11 Orlandi (Dunk - 89' )
- 21 David Lopez
- 19 Ulloa
- 25 LuaLua Booked (Hammond - 46' )
- 30 Buckley
- 01 Brezovan
- 05 Dunk
- 22 Painter
- 04 Hammond
- 15 Vicente
- 18 Dicker
- 33 Barker
Live Text Commentary
Full Time The referee brings the game to a close.90:00 +3:15
Andy Reid produces a cross, save by Casper Ankergren.90:00 +2:14
The ball is crossed by Chris Cohen, Casper Ankergren makes a save.90:00 +1:44
Corner taken left-footed by Andy Reid, clearance by Gordon Greer.90:00 +1:21 Booking
Booking Henri Lansbury goes into the book.90:00 +0:09
The assist for the goal came from Andy Reid.90:00 +0:09 Goal scored
Goal! - Henri Lansbury - Nott'm For 2 - 2 Brighton Goal scored by Henri Lansbury from outside the box low into the middle of the goal. Nottm Forest 2-2 Brighton.88:56 Substitution
Substitution Lewis Dunk replaces Andrea Orlandi.87:07
Billy Sharp takes a shot. Save by Casper Ankergren.86:49
Inswinging corner taken from the right by-line by Andy Reid.85:45
Lewis McGugan takes a inswinging corner.84:17
Assist on the goal came from Jose Ulloa.84:17 Goal scored
Goal! - Will Buckley - Nott'm For 1 - 2 Brighton A goal is scored by Will Buckley from inside the box to the bottom left corner of the goal. Nottm Forest 1-2 Brighton.81:36
Assist on the goal came from Andy Reid.81:36 Goal scored
Goal! - Lewis McGugan - Nott'm For 1 - 1 Brighton A goal is scored by Lewis McGugan from inside the penalty area to the top left corner of the goal. Nottm Forest 1-1 Brighton.79:01
Effort on goal by Andy Reid from long distance goes over the crossbar.78:12 Substitution
Substitution Billy Sharp is brought on as a substitute for Adlene Guedioura.77:36
Andy Reid takes a inswinging corner from the right by-line played to the near post, Simon Cox has a header from close range and clears the crossbar.77:22
Darius Henderson takes a shot. Casper Ankergren makes a save.76:17
Simon Cox produces a right-footed shot from deep inside the area which goes wide of the left-hand post.
Corner taken by Lewis McGugan from the left by-line to the near post.73:43
A cross is delivered by Andy Reid.73:18
Short corner worked by Lewis McGugan.72:11 Substitution
Substitution Radoslaw Majewski leaves the field to be replaced by Lewis McGugan.70:14
Radoslaw Majewski takes the inswinging corner, clearance by Will Buckley.66:51
Free kick taken by Karl Darlow.66:51 Substitution
Substitution Gonzalo Jara Reyes comes on in place of Sam Hutchinson.66:51
Danny Collins fouled by Jose Ulloa, the ref awards a free kick.66:24
Will Buckley takes a outswinging corner to the near post, clearance made by Adlene Guedioura.66:10
Dean Hammond takes a shot. Karl Darlow makes a save.65:38
Moreno David Lopez takes a outswinging corner to the near post, clearance by Elliott Ward.64:42
Direct free kick taken by Moreno David Lopez.64:42 Booking
Booking Radoslaw Majewski goes into the referee's book for unsporting behaviour.64:28
Foul by Radoslaw Majewski on Will Buckley, free kick awarded.63:06
Simon Cox is adjudged to have handled the ball. Casper Ankergren takes the indirect free kick.61:59
Jose Ulloa gives away a free kick for an unfair challenge on Elliott Ward. Free kick taken by Sam Hutchinson.61:27 Booking
Booking Casper Ankergren goes into the referee's book for time wasting.60:59
Simon Cox concedes a free kick for a foul on Gordon Greer. Direct free kick taken by Gordon Greer.60:28
Free kick awarded for a foul by Will Buckley on Andy Reid. Karl Darlow takes the free kick.59:06
Andy Reid takes a corner.56:55 Goal scored
Goal! - Jose Ulloa - Nott'm For 0 - 1 Brighton Jose Ulloa finds the back of the net with a goal from deep inside the penalty box to the bottom left corner of the goal. Nottm Forest 0-1 Brighton.56:42
Outswinging corner taken from the right by-line by Will Buckley,55:13
Chris Cohen concedes a free kick for a foul on Inigo Calderon. Andrea Orlandi shoots direct from the free kick, save made by Karl Darlow.53:23
Unfair challenge on Dean Hammond by Henri Lansbury results in a free kick. Gordon Greer restarts play with the free kick.53:00
Radoslaw Majewski challenges Inigo Calderon unfairly and gives away a free kick. Andrew Crofts restarts play with the free kick.51:12
Centre by Andy Reid, Casper Ankergren makes a save.50:32
The ball is crossed by Chris Cohen, Casper Ankergren makes a save.49:10
Shot from just outside the area by Jose Ulloa misses to the right of the target.47:34
Henri Lansbury gives away a free kick for an unfair challenge on Andrew Crofts. Direct free kick taken by Gordon Greer.45:17
Centre by Will Buckley, clearance made by Sam Hutchinson.45:01
The second half kicks off.45:01 Substitution
Substitution Dean Hammond on for Kazenga LuaLua.45:00 +3:19 Half time
Half Time The referee blows for half time.45:00 +1:43 Booking
Booking Kazenga LuaLua is given a yellow card.45:00 +1:06
Sam Hutchinson gives away a free kick for an unfair challenge on Kazenga LuaLua. Wayne Bridge restarts play with the free kick.44:55
Darius Henderson crosses the ball, save made by Casper Ankergren.43:04
A cross is delivered by Simon Cox, Casper Ankergren makes a comfortable save.42:28
Unfair challenge on Henri Lansbury by Kazenga LuaLua results in a free kick. Henri Lansbury takes the free kick.41:08
Kazenga LuaLua crosses the ball, save made by Karl Darlow.40:40
Free kick awarded for an unfair challenge on Kazenga LuaLua by Henri Lansbury. Direct free kick taken by Moreno David Lopez.39:05
Sam Hutchinson concedes a free kick for a foul on Will Buckley. Free kick taken by Casper Ankergren.37:53
Free kick awarded for an unfair challenge on Radoslaw Majewski by Moreno David Lopez. Free kick taken by Adlene Guedioura.37:09
Moreno David Lopez produces a drilled right-footed shot from 20 yards. Danny Collins gets a block in.36:24
Short corner taken by Radoslaw Majewski from the left by-line, Centre by Chris Cohen, Gordon Greer makes a clearance.34:14
The ball is crossed by Radoslaw Majewski, Casper Ankergren makes a save.33:43
Inswinging corner taken right-footed by Radoslaw Majewski from the left by-line to the near post, clearance by Gordon Greer.32:54
Jose Ulloa gives away a free kick for an unfair challenge on Danny Collins. Direct free kick taken by Sam Hutchinson.32:14
A cross is delivered by Kazenga LuaLua.30:54
Andy Reid takes a inswinging corner to the near post, Matthew Upson manages to make a clearance.30:18
Darius Henderson takes a shot. Casper Ankergren makes a save.27:12
Free kick awarded for an unfair challenge on Gordon Greer by Darius Henderson. Casper Ankergren restarts play with the free kick.20:15
Free kick awarded for a foul by Sam Hutchinson on Kazenga LuaLua. Andrea Orlandi restarts play with the free kick.19:52
Free kick awarded for an unfair challenge on Will Buckley by Adlene Guedioura. Direct free kick taken by Moreno David Lopez.19:01
Simon Cox challenges Inigo Calderon unfairly and gives away a free kick. Casper Ankergren takes the direct free kick.17:36 Booking
Booking Danny Collins booked.17:00
Free kick awarded for an unfair challenge on Jose Ulloa by Danny Collins. Andrew Crofts takes the direct free kick.15:18
Andy Reid takes a shot from just inside the penalty box which clears the crossbar.14:22
Darius Henderson has an effort at goal from 25 yards. Save made by Casper Ankergren.12:42
Andrea Orlandi produces a cross, Chris Cohen makes a clearance.12:00
Adlene Guedioura produces a right-footed shot from just outside the box that goes wide right of the goal.11:34
Sam Hutchinson decides to take the corner short.10:23
A cross is delivered by Sam Hutchinson.7:37
The ball is sent over by Andy Reid, Casper Ankergren makes a save.6:51
Foul by Henri Lansbury on Wayne Bridge, free kick awarded. Gordon Greer takes the direct free kick.5:59
Henri Lansbury produces a volleyed right-footed shot from 18 yards. Casper Ankergren makes a save.1:49
Andy Reid crosses the ball, Andrew Crofts makes a clearance.0:06
Andrew Crofts challenges Adlene Guedioura unfairly and gives away a free kick. Free kick taken by Sam Hutchinson.0:00
The referee gets the match started.
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