Problems by Piotr Rudnicki

Name
Fastest
Shortest
Total
Acc.
Ratio
Difficulty
Languages
A Flea on a Chessboard0.01287202239920%6.3Harden
Antiarithmetic?0.01258320759719%6.8Harden
Ants0.001047878367247%2.3Easyen
Bachet's Game0.042406047227138%4.1Mediumen
Basic Remains0.0171171471842%3.4Mediumen
Brownie Points I0.01147110861455%2.2Easyen
Brownie Points II0.1113361122926%6.8Harden
Closest Sums0.0022810163364036%2.5Easyen
Cutting a polygon0.0020533205417%7.2Harden
Ferry Loading IV0.002986135239739%2.0Easyen
Grid Speed0.0424531321411%6.3Harden
How many 0's?0.00127186788347%3.5Mediumen
Knights in Fen0.001454574149033%3.6Mediumen
Magic Bitstrings0.00792018341%5.8Harden
Marbles On A Tree0.002463173118037%3.1Mediumen
Persistent Numbers0.00126153455336%4.1Mediumen
Rectilinear Polygon0.016031967036%6.3Harden
Three Powers0.00814187193846%2.3Easyen
Tri Tiling0.00603777148339%2.7Easyen
Watering Grass0.012699651204921%3.9Mediumen