On 20 March, the sun reaches the vernal equinox, heralding a symbolic revival of nature in the northern hemisphere of the planet. We, the authors of the book « Florilège de variantes de sudoku », have risen to the challenge of creating sudoku puzzles inspired by the theme of spring. Alternately playing with words (« spring » or « printemps » in French), date or trying to symbolize the fauna and flora in the different grids, alternating between classical grids, known variants or innovations to achieve this, we propose for the tournament a panel of varied grids . The process has requested to the authors an effort of imagination in order to create grids being interesting to solve and symbolizing the theme of spring. We hope you enjoy this double goal and you have as much fun to solve the grids as we had to create them.Authors

Sudoku Types
 Alphaframe sudoku
 Classic sudoku
 Consecutive sudoku
 Greater Than and Killer
 Sudokurve
 Arrow sudoku
 Sundoku
 Extraregions sudoku
 Jigsaw Wordoku
 Mixed sudoku
 Killer 08
 Double sum sudoku
Sudoku grids in this test are based on the theme of Spring season.
Timing
You may start "Springs" puzzle contest any time during the 48hour period listed below.
Your timer will start when you click "Start Test" — then you will have exactly 120 minutes minutes to solve and submit your answers. A timer will be shown the answer page with the remaining time.
Submission is not allowed after the specified end time — you must start early enough to permit yourself enough solving time.
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