2018/12a: solve
2018/11: solve
2018/10: solve
2018/9: solve
2018/8: solve
2018/7b: solve
2018/7a: solve
2018/6: solve
2018/5: solve
2018/4: solve
2018/3: solve
2018/2: solve
2018/1: solve
2018/*: move old stuff aside
2017/25: solve :)
2017/24: solve :)
2017/21: solve :)
2017/23b: solve :)
2017/23a: solve
2017/22: solve :)