Bprijadi

I believe this is my best purchase on a chess app on IOS. I spent $7.99 in Feb of 2013 for this and after 10 years and many IOS version updates Shredder chess still is my go-to chess app for puzzles, playing, and learning. 1000 puzzles is a lot, and the best thing is I can continue playing against the engine at the position where the puzzle is solved for endgame practice.