Logic Masters Deutschland e.V.

[This puzzle was set with my friends on stream. You can find a video of its creation here . ]

Normal ubahn rules apply. Draw a totally connected loop network through the centers of some cells, which may branch or turn, but may not have any dead ends.

A clue outside the grid indicates how many times the corresponding line shape (i.e. a cross, branch, straight line, or turn) appears in the corresponding row or column, irrespective of the line shape's rotation.

An arrow inside the grid indicates that another cell in that direction has the same line type (i.e. empty, cross, branch, straight line, or turn), and also that every other cell of the same line type within its row and column is strictly further away than the nearest cell in the direction.

Note this IS a negative constraint. For example, if r1c1 was a turn, then if r3c1 is a turn, (but r2c1 is not), r1c2 and r1c3 cannot be turns.

Have fun, leave a comment if you enjoy the puzzle!

Play this puzzle on SudokuPad

Play this puzzle on penpa

PS: I stream solving sudoku like puzzles two days a week, as well as posting Let's Plays of puzzle games like Blue Prince. You can check out the channel, as well as some videos I have made about setting puzzles, at my YouTube channel here.