Hi everyone,
WICA says:
You cannot make a river turn twice in a row in the same direction (a U-turn), as this risks that the following tile will be impossible to place
And also:
Question: With the U-turn rule when making rivers, does that mean no U-turn ever, or just no immediate U-turns because it will complicate the placement of subsequent river tiles?
Answer: Only immediate U-turns are explicitly forbidden. Naturally, there can also be problems if a straight river tile lies between. Turning river the same way three times should also be considered prohibited.
This seems quite clear. On the picture below, I did always play that A and C are allowed (they're not direct u-turns), but B and D are forbidden (direct u-turns).
But asmodee's mobile app forbids situation A too and allows B, C and D. No matter the situation, the app doesn't allow the river to go back in the direction of the river source (see screenshot, the last tile shown can only be placed to make the river go down, it can't be placed so that the river go back up).
Is this an unofficial restriction used by asmodee that you cannot make direct u-turns AND you cannot make the river go back in direction of the source ?
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