Reading Problem 1
This problem comes from a very nice book by Segoe Kensaku, The Book to Increase your Fighting Strength at Go ( 囲碁の力を強くする本). Typically the problems involve not only tesuji, but reading to a fair depth.
At first glance the Black stones in the middle appear to be captured. However, Black can capture some white stones by finding the flaw. If White resists, it may take at least 15 plays.
Enjoy!
-- Bill Spight