My Puzzle Rush - 1000 Jubilee!
Wow, just received this gift a realized how much time and effort I spent on this amazing stuff Puzzle Rush! 
Just some figures for statistic-lovers:
- 1000 sessions for 5 minutes per each took me 5000 minutes or 83,33 hours (since launch in autumn, 2018)
- My average score was 30,17 so I solved 30 170 (!) puzzles
- My best result was 41 which I repeated 5 times
Obviously, Puzzle Rush is the greatest tactics trainer ever.
Army of chess fans from amateurs to super-GMs were hit by this virus.
Personally for me it helped to hold my blitz and bullet level without any other training.
Not so bad for man at 43 who finished his chess career in 1990 (being a candidate master of former USSR).
Unfortunately I hit a wall and plateaued on the level of 41 but still hoping to overcome myself.
Philosophers say Quantity sooner or later must turn into Quality! 
