Problems by Piotr Rudnicki

Name
Fastest
Shortest
Total
Acc.
Ratio
Difficulty
Languages
A Flea on a Chessboard0.01287182636320%6.2Harden
Antiarithmetic?0.01258303656619%6.9Harden
Ants0.001047259341647%2.3Easyen
Bachet's Game0.042885765222439%4.2Mediumen
Basic Remains0.0171157866142%3.5Mediumen
Brownie Points I0.0114799255356%2.2Easyen
Brownie Points II0.111336802835%6.7Harden
Closest Sums0.002289615341335%2.7Easyen
Cutting a polygon0.0020532705019%7.5Harden
Ferry Loading IV0.002985360201938%2.4Easyen
Grid Speed0.0424531051312%6.4Harden
How many 0's?0.00127165679748%3.7Mediumen
Knights in Fen0.001454370143333%3.6Mediumen
Magic Bitstrings0.00791877641%5.5Harden
Marbles On A Tree0.002642775103137%3.0Mediumen
Persistent Numbers0.00126136449536%4.2Mediumen
Rectilinear Polygon0.016031696639%7.1Harden
Three Powers0.00813927179046%2.3Easyen
Tri Tiling0.00603563137539%3.0Mediumen
Watering Grass0.022919082191521%4.3Mediumen