Problems by Piotr Rudnicki

Name
Fastest
Shortest
Total
Acc.
Ratio
Difficulty
Languages
A Flea on a Chessboard0.01287203040020%6.2Harden
Antiarithmetic?0.01258322159719%6.8Harden
Ants0.001047890368047%2.3Easyen
Bachet's Game0.041976090227837%4.1Mediumen
Basic Remains0.0171171471842%3.4Mediumen
Brownie Points I0.01147111762056%2.2Easyen
Brownie Points II0.1113361122926%6.9Harden
Closest Sums0.0022810170364136%2.4Easyen
Cutting a polygon0.0020533245417%7.3Harden
Ferry Loading IV0.002976152240239%2.0Easyen
Grid Speed0.0424531321411%6.3Harden
How many 0's?0.00127186788347%3.4Mediumen
Knights in Fen0.001454574149033%3.6Mediumen
Magic Bitstrings0.00792058541%5.2Mediumen
Marbles On A Tree0.002463174118137%3.1Mediumen
Persistent Numbers0.00126153455336%4.1Mediumen
Rectilinear Polygon0.016032007136%5.7Harden
Three Powers0.00814187193846%2.3Easyen
Tri Tiling0.00603781148539%2.7Easyen
Watering Grass0.012699663205221%3.9Mediumen