Instruction Booklet has been published and is available on the link (its the same IB for both parts so you can just go to one of the links to download it).

The start has been postponed as I want some more checking done. The end will also be proportionally adjusted.

Pulled it back since the checking is done.

Also, password protected Puzzle Booklet is now available to download.

Excellent+contest%2C+thank+you+Riad%2E+%F0%9F%91%8C%0D%0A%0D%0AI+can%27t+remember+the+last+time+I+solved+a+set+longer+than+100+minutes%2E+I+wish+there+were+more+longer+sets%2C+for+me+it%27s+the+ultimate+pleasure%2E

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%2C+Riad%2E%0D%0AI+always+love+the+fresh+new+challenges+you+come+up+with%2E%0D%0A%0D%0AHowever+it+seems+your+IB%27s+are+always+quite+difficult+to+read%2E%0D%0ALanguage+barrier+may+be+to+blame%2E%0D%0APerhaps+you+might+want+to+consider+having+the+test+solvers+go+through+some+of+the+IB+wording+next+time%3F%0D%0A%0D%0ASometimes+good+IB+examples+come+to+the+rescue+when+wording+seems+unclear%2E%0D%0AUnfortunately+some+examples+here+don%27t+help+much+either%2E+%28Circles%2C+Pentominoes%2C+Sudoku+without+Sums%2C+Off%2DRoad+were+too+trivial+I+thought%29%2E%0D%0AThe+cube+Samurai+%28a+great+puzzle%29+had+yellow%2Dcircled+cells+that+applied+to+three+puzzles+%2D+which+wasn%27t+clear+if+that+was+the+case+or+whether%0D%0Ayou+had+to+figure+out+which+two+%28out+of+three%29+grids+it+applied+to%2E%0D%0A%0D%0AThese+are+minor+observations+and+does+not+take+away+the+nice+puzzles+you+provided+us%2E%0D%0AThanks+again%2E+%F0%9F%99%8F%0D%0A

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

Congratulations to Hideaki, Ken and Zimi!

Thanks to all participants!