Vincent Kompany believes going all-out attack is the best way to take on Paris Saint-Germain after Bayern Munich were edged out by the European champions in a nine-goal thriller.

PSG and Bayern served up a Champions League all-timer at the Parc des Princes, where the Champions League holders came out on top 5-4 in the first leg of their semi-final tie.

It marks the most goals in a single Champions League semi-final match, and when counting for the European Cup era, it is the joint-highest goals tally in a last-four game, along with Rangers 3-6 Eintracht Frankfurt in the 1959-60 season.

This was the first time in a European semi-final (in any competition) that both teams scored 4+ goals, and just the second Champions League knockout-stage match after Chelsea 4-4 Liverpool in the 2008-09 quarter-finals.

PSG scored with all five of their shots on target, while Bayern created better opportunities according to the expected goals figures (2.51 xG to their hosts' 1.91).

Bayern conceded five goals in a match for the first time since December 2023 (1-5 vs Eintracht Frankfurt), and for the first time in European competition since the 1994-95 Champions League semi-final second leg against Ajax (2-5).

But Kompany, who was watching on from the stands due to a touchline suspension, believes his team, who fell 5-2 down early in the second half, showed that going all-out attack is the best way to combat PSG's qualities.

"What do you want? I think you’ve seen a lot of good, intense defending today, it's just the margins are so, so little, and you only have two ways," he told Amazon Prime.

"The first one is to go full [attack], or the second one is to retreat fully. The in-between doesn't work against [PSG's] level of player, and it doesn't work against our level of player."

Asked what is to come in next week's second leg in Munich, Kompany added: "More. Even more.

"We're at home. We'll have 75,000 people in that stadium. The city will live it for an entire week.

"We don't just want noise – we want a mass in the stadium, that weight to be there, and we need it. Then, it's a place where anything can happen. It's not a ground that is shy of successful moments for this team."

Bayern have conceded 3+ goals in consecutive European Cup or Champions League matches for the first time since a run of three in October and November 1973. They went on to win the trophy for the first time that season.

And even at 5-2 down, Kompany did not feel Bayern were ever out of the contest, and his faith was rewarded by quickfire goals from Dayot Upamecano and Luis Diaz.

"It's one thing to look at the goals conceded – normally, concede five goals in a Champions League semi-final, away from home, you're out – but if you look at the chances we created, we could have scored more," he said.

"If you've got nothing in the game, it's hard to make a case to say you could turn it around, but if you're as dangerous as we were during this game, then I feel like it's just about getting your head back in the game and trying to put the chances away."