How TactiDeck's Match Engine Works: A Manager's Guide

TactiDeck builds a match from football actions. It does not compare two squad ratings, pick a score, and invent statistics to explain it afterward. Players attempt passes, move the ball forward, create chances, defend, and shoot. Goals emerge from those actions.

Your job is to give those players a coherent plan. The strongest eleven cards are not always the best eleven for the football you want to play. Positions, roles, formation, tactics, and preparation all influence which opportunities the team creates and how well it handles them.

This guide describes the current engine from a manager’s perspective: what you control before kickoff, what happens during the simulation, and what the report can teach you.

When your decisions lock

A fixture appearing on the calendar does not immediately freeze your team. Your decisions become immutable when the actual match and its snapshots are created. The snapshot records the starting eleven, assigned positions and roles, player attributes and training form, formation, five tactical settings, preparation focus, and match instructions.

After that point, editing your squad cannot change that match. Check the fixture’s lock status and finish your setup before its deadline.

A league team without a valid saved lineup can receive an automatically selected eleven from eligible players, with a preparation penalty across their action capabilities. If there are not enough eligible players to fill a supported formation, the match cannot be prepared. Saving a complete, available lineup is therefore a meaningful part of preparation.

The same locked inputs and simulation seed produce the same result under the same engine implementation. A processing retry does not reroll your match. That consistency does not make the result predictable before kickoff; individual actions still involve uncertainty.

Attributes provide the tools

The six visible attributes—speed, defence, attack, passing, dribbling, and physical—feed several abilities: pass security, progression, chance creation, finishing, defensive duels, interceptions, recovery, pressing, and goalkeeping.

Each ability combines relevant attributes. Passing and dribbling help a player advance possession; defence, speed, and physical strength help them recover or win a duel. Goalkeeping currently draws mainly on defence, with support from other attributes. One headline number cannot describe every job.

Training form also matters. For league matches, the relevant week’s training performance adjusts the player’s action capabilities and is captured when the match locks. Strong or weak training changes execution rather than assigning a guaranteed performance rating.

Aggression contributes to defensive involvement and pressing, but it also raises disciplinary risk. A player who challenges more often may win more balls and accumulate more card risk. Judge that profile against the job and the pressure your plan creates.

Positions, roles, and formation work together

Position determines where a player participates. Role shapes the actions they attempt, their involvement, and the risks they take. A Deep-lying Playmaker supports build-up and progression; an Advanced Playmaker seeks more demanding creative actions. A Poacher concentrates on attacking movement and finishing, while a Pressing Forward contributes more without the ball.

Role proficiency runs from 1 to 5. It describes suitability for a particular role, rather than replacing the attributes with another overall rating. The engine compares a selected role with the player’s alternatives in that position and adjusts execution for the actions that role handles.

Position fit is a separate consideration. A natural position preserves full capability, a related position applies a small reduction, and an unfamiliar position applies a much larger reduction across actions. A talented attacker filling an unfamiliar defensive slot pays for both the mismatch in abilities and the unfamiliar position.

Formation gives those jobs a spatial structure. The engine evaluates build-up, progression, creation, finishing, pressing, transition defence, settled defence, and goalkeeping separately, weighting players according to their relevant involvement. Your goalkeeper’s attack does not drive team finishing, and your striker’s defence does not carry the same responsibility as a centre-back’s.

Build complementary jobs. Forward runners need players who protect the space they leave; creators need reliable support and finishers. Holding midfielders, Cover Defenders, and recovery speed can help a team survive its own attacking ambition.

Five tactical axes, five sets of trade-offs

Tactics change participation, risk, territory, and opportunity. They do not add a flat bonus to your players’ attributes. Their value depends on your lineup and the opponent.

Mentality

Attacking mentality increases forward involvement and attacking volume while exposing more space after possession is lost. Defensive mentality reduces some exposure but can surrender territory and opportunities. Balanced gives a useful reference when your team does not need either extreme.

Passing style

Short passing creates more circulation and demands dependable build-up under pressure. An opponent with strong pressing can turn failed actions into dangerous transitions.

Direct passing uses fewer passes per sequence and accepts a lower baseline completion chance, but can gain more ground when successful. Fast runners and suitable forward roles give those actions a destination, especially behind a high line. A lower completion percentage can be an acceptable cost if the team reaches useful positions.

Tempo

High tempo increases action volume, technical mistakes, transitions, duels, and physical risk. Low tempo offers a more controlled approach with fewer actions. Choose a pace your players can execute, rather than assuming more attempts always mean better football.

Defensive line

A high line compresses space and supports earlier pressure, while leaving room behind the defence. Recovery speed, transition protection, a Cover Defender, and a Sweeper Keeper can help manage that exposure.

A deep line protects space behind it but gives the opponent more territory and can make progression harder after a recovery. It still needs players capable of stopping attacks around the box.

Team width

Narrow width supports central combinations and compact central defending while conceding room on the wings. Wide width supports wing progression and coverage while increasing space through the centre.

Role distribution matters alongside the setting. Wide players, central creators, and inward-moving roles change where your team participates. A width choice works best when those jobs support it.

There is no universal counter. Direct attacks may threaten a high line; pressing may disrupt short build-up; wide attacks may exploit a narrow defence. Those advantages depend on execution, phase strengths, and the space the opponent actually leaves.

Read the opponent before choosing preparation

Opponent analysis uses completed league matches. It summarizes observed formations, tactical tendencies, results, and performers. For human opponents, that history can include previous leagues; AI history stays with the relevant league participant.

It does not reveal a private upcoming lineup or plan. A frequent high line is evidence of a tendency, not confirmation that the opponent will use it again. Always consider the size of the sample.

Completed analysis opens the choice of one preparation focus:

• Balanced: the neutral option when evidence or squad suitability is weak.
• Exploit high line: improves opportunities behind an opponent’s high defence; offers little against deeper lines.
• Resist press: supports passing security and resistance to dangerous losses when the opponent creates meaningful pressing pressure.
• Defend wide: makes wide progression and creation harder while leaving a little more central space.
• Protect centre: limits central progression and creation while accepting more exposure outside.
• Counter-attack: supports progression, creation, and transitions against committed opponents, at the cost of build-up security and control.
• Control possession: supports safer circulation and ball control while reducing some transition volume and rapid attacking progress.

These are contextual adjustments, not replacements for a suitable lineup. They do not change the opponent’s tactics or your players’ raw attributes.

Match instructions add a specific emphasis

Completed opponent analysis also unlocks match instructions. You do not need to save a preparation focus first. Offensive and defensive choices are independent: use either, both, or leave both neutral.

The offensive options are:

• Play Through Player: select a player from your starting eleven to receive more progression and creation involvement. Other producers receive a smaller share. It does not give the target an automatic finishing boost or extra shooting priority.
• Exploit Area: select the central or wide channel to shift more attacks there. The other channel receives fewer attacks. This does not change your team’s width or guarantee successful actions in the selected area; there is currently no separate left/right choice.
• Midfield Runners: increases midfielders’ creation and shooting involvement, with a small reduction in transition protection when eligible players are active. It does not simply generate extra possessions.

The defensive options are:

• Press Selected Player: select an observed opponent to make their build-up and passing progression harder, while giving other opponents a little more freedom. It does not apply a general penalty to the target’s creativity or shooting.
• Get Stuck In: increases tackle attempts during progression, with less restriction on opposition progression and creation passes. Additional challenge workload feeds the existing card-risk calculation.
• Screen Passing Lanes: makes progression and creation passes harder to complete, with fewer tackle attempts against progression. Consider what you give up against opponents who carry the ball.

Opponent targets come from the last completed league lineup, rather than the opponent’s current private squad. A player they used previously may not start this time. If a selected target is absent at kickoff, that instruction stays passive; the engine does not choose a replacement. A targeted pressing instruction also becomes passive after its target is sent off, including its trade-off against other players.

Pick an instruction because you want that distribution of responsibility. Funneling attacks through one creator concentrates both opportunity and reliance on that player.

How possession becomes chances and goals

Both teams play on one shared chronological timeline. A sequence includes circulation, progression, creation, and a possible shot. Defensive actions can interrupt it earlier. Progression may use a pass or a carry, so advancing the ball does not always add a progressive pass to the statistics.

A genuine interception or won tackle gives the next opportunity to the team that recovered the ball and opens a transition context. A dangerous turnover is a risky subset of possession losses; not every failed pass qualifies, and a recovery does not need that label to transfer the opportunity.

Reported possession comes from the time teams actually control the ball during simulated sequences. Completed passes, carries, and shots contribute to control duration; restart gaps do not. The two control-time shares are normalized to total 100%. Possession is therefore an outcome of the played actions, rather than a preassigned percentage.

This remains a sequence-based simulation, rather than a model of every physical touch and pass recipient. Its statistics nevertheless come from the same action chain that creates the score.

Every shot has its own outcome. Expected goals (xG) measures the chance before finishing, using shot location, distance, angle, and positional context. The shooter’s finishing and the goalkeeper’s ability then affect whether the shot hits the target and becomes a goal. Similar xG does not require identical finishing or identical scores.

A successful carry can lead to the carrier shooting. When creation produces a key pass and that shot becomes a goal, the creator receives an assist. Some goals have no assist.

Cards and injuries change different things

Disciplinary risk accumulates during the match from actual tackling and pressing workload, aggression, elapsed time, and tactical context. Cards are evaluated along the shared timeline.

A direct red card removes the player from later actions, weakens the remaining team’s execution, and improves the opponent’s conditions. That effect reaches subsequent sequences even if their displayed minute is the same. The current engine can produce a yellow followed by a direct red, but does not model dismissal for a second yellow.

League injury risk depends on injury proneness and physical workload, including recovery demands and tactical settings. An injury is recorded for availability after the match; it does not remove the player from the remaining actions of that match.

Friendlies produce no injury events, and their card events do not update persistent suspension or availability status.

Ratings measure responsibility and opportunity

Match ratings run from 3 to 10, separate from the 1-to-5 role proficiency scale. They start from a common baseline and reflect actual contributions against the responsibilities of the selected position and role.

The engine considers both action volume and success, with expectations built from the opportunities available while the player is active. A tiny number of successful actions does not automatically outweigh a busy, productive performance. Creators, defenders, and goalkeepers have different responsibilities.

Goals, assists, key passes, defensive work, and saves contribute. Finishing a harder chance carries different value from finishing an easier one. Dangerous turnovers and cards cost rating; team victory and an injury do not directly add or subtract points. Completing many safe passes alone is insufficient for an outstanding rating.

Use the report as evidence

The report evaluates preparation, the tactical plan, lineup decisions, and instructions through relevant match outputs. Examine progression and creation success, shot quality, channel usage, dangerous turnovers, defensive recovery load, and individual contributions alongside possession and the score.

An effective instruction verdict describes execution in the opportunities that occurred. It does not prove that the instruction caused a win or that another choice would have lost. Cards and recovery workload are observed context, not proof that a particular instruction caused them. A target absent from the lineup or a choice with no applicable opportunities offers limited evidence.

Look for repeated patterns over several matches. Ask whether your team reached the areas you intended, whether the right players were involved, and whether the accepted trade-off became costly.

Before the next kickoff

1. Save a complete starting eleven of eligible players before the match locks.
2. Check position fit, training form, and the jobs each role performs.
3. Balance build-up, creation, finishing, pressing, and transition protection.
4. Match the five tactical settings to those players and responsibilities.
5. Read the opponent’s history and judge how much evidence it contains.
6. Choose preparation and instructions with their conditions and trade-offs in mind.
7. Afterward, compare the intended plan with the actions recorded in the report.

There are currently no substitutions, user-driven tactical changes during a match, or minute-by-minute fitness decay. Set pieces, penalties, offside, and second-yellow dismissals are not separately simulated. Account for those limits when interpreting the football you see.

Strong cards give you better tools. A coherent plan gives those tools useful jobs—and the match report helps you decide what to improve next.

You can explore TactiDeck at tactideck.com.