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====== Spire ======

On your turn, either place a ball of your colour, or place a neutral ball and then a ball of your colour. No 2×2 of balls may include more than two of the same colour, and you cannot place a colour on a platform that already holds two balls of that colour. The first player who cannot move loses.

Inventor: Dieter Stein

===== Rules =====

See [[https://boardgamegeek.com/boardgame/113641/spire|BoardGameGeek: Spire]]. Played on a Shibumi pyramid.


===== Variants =====

==== Size 5 ====

5×5 Shibumi (''size-5'').

===== Further details =====

==== Version history ====

  * Current engine version: ''20240602'' (2024-06-02). On Abstract Play since 2024-06-08.

==== Abstract Play ====

  * One click places your colour; two clicks place neutral then yours. If the first cell allows only one of those, it commits automatically.

==== Links ====

  * [[https://boardgamegeek.com/boardgame/113641/spire]]