Hi,
I have gone through your requirements and would like to assist you in creating you crossword puzzle app. I have expertise in WPF, UWP, C#, C/C++ and other related technologies. I can adjust my schedule with you timing, so availability is not an issue. I have a degree in Computer Science from Pennsylvania State University and have excellent mathematical and analytical skills.
I am new to this website and this project gives me a chance to share my talent and skills in this field. Dedication to the work is an asset in me which can be beneficial to the clients. Message me and we can discuss further details. Also i have added a screen shot of a Business Intelligence Software system that I recently developed for a client using C# and WPF with some number crunching routines written in C++.
Looking forward to work with you.
Thanks