Brazil's front three broke Haiti open twice either side of the half-hour mark: Cunha turned scorer twice, in the 23rd and 36th minutes, both goals built inside the pocket he and Guimarães shared between Haiti's lines, before Vinícius Jr added a third right on the stroke of half-time to make it 3-0 at the break. Brazil controlled the rest of the game without needing to press for it — Haiti actually out-pressed Brazil by volume (294 pressures to 195) in search of a way back in, but the door stayed shut. A comfortable opening win, and the match where the Guimarães-Cunha role-exchange experiment paid off in front of goal.

Bruno Guimarães wasn't a conventional central midfielder here. He pushed up to forward height into the space Cunha vacated by dropping, and the two met in the same pocket — centre-circle to half-space — collapsing Haiti's marking references. Sometimes Guimarães received and drove while Cunha ran; sometimes the reverse, so Haiti could never predict who would do what. With both sitting between the lines, the gap between Haiti's centre-backs and midfield opened, and Vinícius and Raphinha attacked in behind through it. Read Guimarães as a midfielder and Cunha is free; read him as a forward and Guimarães is free — the inability to close both at once is what produced 1.42 xG (Haiti 0.26).

Brazil's short counter was defined by the clarity of its rehearsed routes: the instant the ball was won, each player moved along a pre-set path. Cunha sat lower as the connecting hub; Vinícius and Raphinha started deeper, primed for the run in behind. On the turnover Cunha spun to lead the line while Vinícius and Raphinha broke through the half-spaces into the box — no collisions, each into his own clear space. That clarity is why Haiti could press more than Brazil and still concede no counters; Haiti's 0.26 xG is the proof.

Brazil ran the same three-step trap on Haiti's 5-4-1 all night. First, Vinícius and Raphinha stretched wide to drag Haiti's wing-backs toward the touchline; when a wing-back followed, one of the five defenders was already out of position. Second, Guimarães read the gap and stepped into the half-space while the ball was on the far side, out of the defense's sightline. Third, the resulting dilemma had no clean answer for a Haitian centre-back: track Guimarães and the middle opens for Cunha; hold the line and Guimarães turns and drives. Either choice favoured Brazil, and the pattern repeating for ninety minutes is what produced 105 completed line breaks — Haiti was made to guess correctly, over and over, with no correct guess available.

Haiti pressed 294 times to Brazil's 195 — 99 more actions trying to break the build-up by volume — and it didn't work, because Cunha absorbed it. Despite starting as the centre-forward, he dropped to central-midfield height to receive as a relay node, already turned before the press arrived, releasing the ball first-time rather than holding it. The pattern didn't slow Brazil down under pressure; it sped them up, and the space that opened as a result flowed the other way. The result: 88% pass completion and 551 total passes against 294 opposition pressures — proof that pressing volume doesn't automatically convert into disruption if the receiving structure is built to absorb it.

When Haiti switched from a back five to a back four to be more aggressive, Brazil responded immediately, bringing on Martinelli and shifting to a 4-2-4: a front line of Vinícius, Martinelli (left), and Endrick (right), with a Guimarães–Casemiro double pivot holding defensive stability behind. Martinelli was more than a winger — he joined the build-up and combined penetration with on-ball play, rotating roles so Haiti couldn't read the next move. A compact central block, two banks up front, screened the space.

The trigger of the whole match was Casemiro. When he stepped from anchor to the top of a diamond, Brazil mutated from a 4-3-3 into a diamond build-up: Marquinhos and Gabriel gained forward passing options, Guimarães and Paquetá formed a central overload, and Cunha at the base compressed the circulation as a hub. The key effect was the removal of Haiti's press trigger — a front press normally fires on the CB-to-GK back-pass, but with Casemiro's move diversifying the build-up exits, Haiti pressed 294 times without ever producing an effective ball-win. One movement, three simultaneous effects — press nullified, central overload, centre-backs freed to step in. That is the economy of a mutation: 551 passes at 88% completion, structure held under 294 pressures.

The four concepts chain into each other rather than sitting side by side. Mutation (Casemiro's move) opens the stage for Variable — Cunha, Guimarães and Danilo all doubling roles at once, so marking one frees another. Variable is what makes Lure possible — with multiple threats live, Haiti's back five can never step to one without exposing a different gap. And Buffering is the safety net underneath all of it: Cunha's one-touch relay is what let the structure survive 294 pressures without the previous three mechanisms ever breaking down. Shots finished level at 7–7; the 5.5× gap between 1.42 and 0.26 xG is the actual scoreboard of this framework, and it's also a glimpse of Ancelotti's answer to not having a classic number 9 — Cunha dropping and Guimarães advancing to share one pocket rather than forcing a like-for-like replacement.