"It is tough to be a plumber."@en . "(1)" . . . "It is tough to be a plumber." . . . "5"^^ . . "0"^^ . . . "Sgall, Ji\u0159\u00ED" . "0"^^ . . . "Tich\u00FD, Tom\u00E1\u0161" . . . . "Praha" . "2"^^ . "Majerech, V." . "Charles University" . . . "In the Linux computer game {tt KPlumber/}, the objective is to rotate tiles in a ~ raster of squares so as to complete a~ system of pipes. We give a~complexity classification for the original game and various special cases of it that arise from rest" . . "RIV/67985840:_____/02:05020118!RIV/2003/AV0/A05003/N" . "649831" . "In the Linux computer game {tt KPlumber/}, the objective is to rotate tiles in a ~ raster of squares so as to complete a~ system of pipes. We give a~complexity classification for the original game and various special cases of it that arise from rest"@en . "It is tough to be a plumber."@en . "P(GA201/01/1195), P(LN00A056), P(ME 476), Z(AV0Z1019905), Z(MSM 113200005)" . "Kr\u00E1l, D." . "combinatorial games%computational complexity"@en . "18"^^ . . "It is tough to be a plumber." . . . "Woeginger, G." . "[557D4D31A18D]" . "RIV/67985840:_____/02:05020118" . .