Problems by Piotr Rudnicki

Name
Fastest
Shortest
Total
Acc.
Ratio
Difficulty
Languages
A Flea on a Chessboard0.01287188836719%6.4Harden
Antiarithmetic?0.01258306457919%6.9Harden
Ants0.001047353346747%2.3Easyen
Bachet's Game0.042885772222539%4.3Mediumen
Basic Remains0.0171160467442%3.6Mediumen
Brownie Points I0.01147100756356%2.3Easyen
Brownie Points II0.111336802835%6.9Harden
Closest Sums0.002289696345536%2.8Mediumen
Cutting a polygon0.0020532705019%7.5Harden
Ferry Loading IV0.002985667219039%2.1Easyen
Grid Speed0.0424531041312%6.4Harden
How many 0's?0.00127167280348%3.8Mediumen
Knights in Fen0.001454377143633%3.7Mediumen
Magic Bitstrings0.00791947740%6.0Harden
Marbles On A Tree0.002642949111538%3.1Mediumen
Persistent Numbers0.00126136949636%4.3Mediumen
Rectilinear Polygon0.016031696639%7.2Harden
Three Powers0.00813943179746%2.4Easyen
Tri Tiling0.00603590138639%3.0Mediumen
Watering Grass0.022699335196321%4.3Mediumen