Problems by Piotr Rudnicki

Name
Fastest
Shortest
Total
Acc.
Ratio
Difficulty
Languages
A Flea on a Chessboard0.01287137930922%6.0Harden
Antiarithmetic?0.01326264048919%7.2Harden
Ants0.001046276294547%2.3Easyen
Bachet's Game0.042405024201140%3.8Mediumen
Basic Remains0.0171143662644%3.4Mediumen
Brownie Points I0.0123981547558%2.3Easyen
Brownie Points II0.111336562545%7.1Harden
Closest Sums0.002288821312435%2.5Easyen
Cutting a polygon0.0020532604618%7.8Harden
Ferry Loading IV0.002984754172636%2.9Mediumen
Grid Speed0.042453941314%6.3Harden
How many 0's?0.00127144269748%4.2Mediumen
Knights in Fen0.007203333110133%3.7Mediumen
Magic Bitstrings0.00791607044%6.0Harden
Marbles On A Tree0.00264230590839%3.1Mediumen
Persistent Numbers0.00126137650437%4.4Mediumen
Rectilinear Polygon0.01603954042%6.0Harden
Three Powers0.00813635169847%2.4Easyen
Tri Tiling0.00602744111441%3.6Mediumen
Watering Grass0.022917089150621%5.0Mediumen