Leicester moved within two points of leaders Portsmouth at the top of the First Division as Brian Deane`s header secured a 1-0 win at Brighton.
Deane, back after a two-game suspension, was left unmarked to nod home Alan Rogers` free-kick in the 72nd minute and make amends for a host of earlier misses.
The defeat extended Brighton`s winless run to seven matches and kept them in the bottom two.
The Seagulls made one change from the side beaten by Derby with Paul Watson returning from suspension to replace youngster Adam Hinshelwood.
Deane was restored to the Foxes forward line alongside Paul Dickov and the in-form James Scowcroft as manager Micky Adams opted for a three-pronged attack on his return to his former club.
Kick-off was delayed by 15 minutes with some fans unable to get to the ground on time following a road accident nearby, and when the action did get under way the visitors were immediately on the attack, as Dickov tested Brighton goalkeeper Michels Kuipers with a shot from the edge of the box in the second minute.
City continued to apply early pressure, and Deane got on the end of a Scowcroft cross but his header lacked power and Kuipers gathered.
Brighton responded through defender Robbie Pethick but his audacious free-kick attempt from 35 yards was easily stopped by Foxes keeper Ian Walker.
Leicester thought they had scored after 22 minutes. Dickov burst through, went round Kuipers and hit the post from six yards.
The loose ball was clipped goalwards by Deane but was desperately hacked away by a covering Brighton defender.
City players were adamant the ball had crossed the line, only for referee Tony Bates to wave away their appeals.
Deane was causing havoc in the Seagulls` penalty area and was guilty of wasting another good chance just before the half hour as he headed wide from close range.
The home side felt they should have had a penalty shortly after the restart.
Bobby Zamora played a neat backheel through to strike partner Graham Barrett, who went down under challenge of a Leicester defender, but the referee waved play on.
Brighton were enjoying their best spell as thick fog set in, and they came agonisingly close to breaking the deadlock on the hour.
Barrett`s curling free-kick from 25 yards took a wicked deflection that had Walker scrambling, but the former England international managed to turn the ball round the post.
Leicester hit back, however, and finally went ahead from a set-piece. Rogers picked out Deane, and the towering forward was left with the simple task of powering home his eighth goal of the season.
City were happy to protect their lead, and did so with ease, with Watson and Barrett failing to trouble Walker with shots from distance.