Is there a chance to extend part 2 for 1 additional day?

Done. Please check the contest page for exact timing.

Thanks for the nice tests, Riad.
I always love the fresh new challenges you come up with.

However it seems your IB's are always quite difficult to read.
Language barrier may be to blame.
Perhaps you might want to consider having the test solvers go through some of the IB wording next time?

Sometimes good IB examples come to the rescue when wording seems unclear.
Unfortunately some examples here don't help much either. (Circles, Pentominoes, Sudoku without Sums, Off-Road were too trivial I thought).
The cube Samurai (a great puzzle) had yellow-circled cells that applied to three puzzles - which wasn't clear if that was the case or whether
you had to figure out which two (out of three) grids it applied to.

These are minor observations and does not take away the nice puzzles you provided us.
Thanks again. 🙏

Thanks for really nice test, Riad! As always, puzzles are "unusual" and challenging.

Congratulations to Hideaki, Ken and Zimi!



Thanks to all participants!