Problems by Piotr Rudnicki

Name
Fastest
Shortest
Total
Acc.
Ratio
Difficulty
Languages
A Flea on a Chessboard0.01287178036320%6.2Harden
Antiarithmetic?0.01258303556519%6.9Harden
Ants0.001047234340347%2.2Easyen
Bachet's Game0.042885745222039%4.2Mediumen
Basic Remains0.0171156665742%3.5Mediumen
Brownie Points I0.0114798355056%2.2Easyen
Brownie Points II0.111336802835%6.7Harden
Closest Sums0.002289545338936%2.7Easyen
Cutting a polygon0.0020532705019%7.5Harden
Ferry Loading IV0.002985345200938%2.4Easyen
Grid Speed0.0424531051312%6.4Harden
How many 0's?0.00127164979148%3.7Mediumen
Knights in Fen0.001454369143233%3.6Mediumen
Magic Bitstrings0.00791737342%5.7Harden
Marbles On A Tree0.002642744102137%3.0Mediumen
Persistent Numbers0.00126136349436%4.2Mediumen
Rectilinear Polygon0.016031666539%7.0Harden
Three Powers0.00813921178646%2.3Easyen
Tri Tiling0.00603538135138%3.0Mediumen
Watering Grass0.022919063190821%4.3Mediumen