Problems by Piotr Rudnicki

Name
Fastest
Shortest
Total
Acc.
Ratio
Difficulty
Languages
A Flea on a Chessboard0.01287201639620%6.3Harden
Antiarithmetic?0.01258320659619%6.8Harden
Ants0.001047788363547%2.4Easyen
Bachet's Game0.042405975225538%4.1Mediumen
Basic Remains0.0171170771342%3.4Mediumen
Brownie Points I0.01147110061156%2.2Easyen
Brownie Points II0.1113361122926%6.8Harden
Closest Sums0.0022810147363236%2.5Easyen
Cutting a polygon0.0020533205417%7.2Harden
Ferry Loading IV0.002986108238239%2.0Easyen
Grid Speed0.0424531321411%6.3Harden
How many 0's?0.00127186288047%3.5Mediumen
Knights in Fen0.001454562148833%3.5Mediumen
Magic Bitstrings0.00792018341%5.8Harden
Marbles On A Tree0.002463152117937%3.0Mediumen
Persistent Numbers0.00126153155136%4.2Mediumen
Rectilinear Polygon0.016031936735%7.1Harden
Three Powers0.00814179193446%2.4Easyen
Tri Tiling0.00603763147239%2.8Mediumen
Watering Grass0.012699582203821%4.0Mediumen