ENLACES

https://www.jaapsch.net/puzzles/eightcub.htm

http://www.lcv.ne.jp/~hhase/memo/m04_06a.html

https://www.jaapsch.net/puzzles/crosstsr.htm

https://www.cs.brandeis.edu/~storer/JimPuzzles/ZPAGES/zzzRollingCubes.html

https://erikdemaine.org/papers/DiceRolling_CCCG2007/paper.pdf

https://www.logicmazes.com/rc/precdnts.html

https://www.youtube.com/watch?v=NdBA6HCI1kM