====== Obstruction ======
In a game of [[en:patterns:competition|competition]], co-players may employ a strategy of **obstruction** in order to gain an advantage. **Obstruction** happens in the  [[en:patterns:interaction_with_the_physical_world|physical domain]], for example by blocking an opponent's access to a **QR tag**.

**Obstruction** may occur without it having been planned for. If it is not designed into the game, it may emerge depending on the profile [[en:patterns:target_group|players]] and on the level of competition [[en:patterns:competition|competition]].

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===Example===
In [[en:CarnivalScrabble]], the organizers feared that players would remove **QR tags** completely after they have scanned them in order to prevent opposing teams from finding and scanning them. During the initial phase of the game this behaviour was actually observed, despite warnings that have been issued prior to the game that this behaviour would lead to either disqualification or not counting the specific tag in the final score calculation. In the specific game the level of competition was very high though. 

In the case of [[en:games:museumscrabble]], where the [[en:patterns:target_group|players]] were kids aged 10-12 years, players blocked opponents from scanning **RFID tags** by placing themselves in front of the exhibits.


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=== Related patterns ===
[[en:patterns:spatial_structure|spatial structure]]

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=== Related heuristics ===
[[en:heuristics:heuristics#3.4]]

[[en:heuristics:heuristics#3.5]]

{{tag>non-pattern}}
{{tag>challenge}}

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=== Backlinks ===
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