The contest consists of 11 puzzles created by Alexei Oleshov. Daily puzzles of all even dates from 2nd September 2023 till 22nd September 2023 are included to the contest scores.
Puzzle score is calculated based on the solving time for each puzzle. Puzzle scoring for particular solver is proportional to solving time and the puzzle difficulty.
Scores for individual puzzles are summarized to produce the total contest score.

Full results of the contest see at the results page

#	Puzzle	Best time
1 (2023-09-02)	Double Block (4x4)	9 s
2 (2023-09-04)	Alternate Loop (6x8)	10 s
3 (2023-09-06)	Battleships Minesweeper (6x6)	22 s
4 (2023-09-08)	Kropki (6x6)	36 s
5 (2023-09-10)	ABC Division (5x6)	13 s
6 (2023-09-12)	Queens (4x7)	24 s
7 (2023-09-14)	Yin Yang (9x9)	18 s
8 (2023-09-16)	Knight Battleships (6x6)	19 s
9 (2023-09-18)	Norinori (7x7)	14 s
10 (2023-09-20)	Chat Room (7x5)	8 s
11 (2023-09-22)	Clouds (10x10)	13 s

Click at the puzzle name to solve the selected puzzle. Puzzles which are older than 5 days are non-competitive and can be attempted without registration.
Click at the best solving time value to see the score table for the selected puzzle.