Arsenal got an ugly win here, but it is a welcome win nonetheless in their quest for a top-four spot.The starting line-up was similar to that of the 2-2 draw at Old Trafford. Stephan Lichtsteiner, the Swiss summer signing from Juventus, started and it was a retention of the back-three system that head coach Unai Emery is implementing currently. Another change was that both Aubameyang and Lacazette were starting, and with both high in the scoring charts, this can frighten any defense out there.Arsenal won the game via a strike from Lucas Torreira. It was his second in successive home games, following his winner vs. old enemies Tottenham Hotspur.However, his side was not in full flow. It was possibly a mix of tiredness, fatigue, and in fairness to Huddersfield Town their gameplan and tactics. David Wagner's team clearly were looking to contain Arsenal, and it worked in large part.Arsenal had chances in the first half - Aubameyang and Lacazette had substantial opportunities to score in this period but missed them both.Moreover, in the second half, Arsenal again looked slow, and while dominating possession, they didn't create many chances. Guendouzi was booked for simulation, while Mkhitaryan's introduction didn't really correct the attacking limpness.Huddersfield missed a good opening, as Leno had to save from a low cross in the six-yard box late on.The winning goal though was a product of a deft chip from Aubameyang, which Torreira dispatched via a well-worked overhead kick. Arsenal was able to see the game out, despite lengthy injury time, and while not at their fluent best gained three vital points in the hunt for a top-four spot.Chelsea defeated Manchester City 2-0 later in the day, while their "friends" Spurs won 2-0 at Leicester City. But it seems Arsenal has improved to the extent that they will give them both a run for their money, to get into the 2019/2020 Champions League group stage.#4 Wagner game planDavid Wagner, the Huddersfield Town manager, is heading a side near the bottom of the league. So it was telling that he would have some kind of game plan to try to contain and nullify Arsenal.It showed, since whilst Arsenal was as not sharp and fluid as normal, Wagner's game plan was working since Huddersfield was pressing Arsenal both in midfield and defence, and getting Arsenal to make mistakes at the back.They also were not very adventurous, but this is expected given their comparatively lesser player quality and the fact Arsenal is often very strong team at home.However, on this showing, Huddersfield can take heart that they can retain a Premier League placement for the 19/20 season.It should be noted though that both Arsenal and Huddersfield Town share a connection via Herbert Chapman, who was a legendary manager in the 1920s and 30s. He achieved great success with both sides, including numerous titles and cups, and maybe next season they can sustain another leg of the "Herbert Chapman Derby".