Thanks for the new red and black squares at the top!  Almost like a chess board!    Do you know how chess was introduced according to an old legend? A wise man came with the game to a king asking for a "small" donation: One grain of rice for the  first  square. Two grains of rice for the second square. Four grains for the third square. And so forth. Before long all the rice is in world would have been spent in this way!
This may also explain "Martingale"!!

Chess! Another game we could play on the felt?...sort of.

I thought the black and red was a tribute to the great cross word method From chrisbis. Very similar to the excel look

Maybe it is not chess after all! Chess might be too dangerous! It requires too much concentration; and you may devolop paranoia . It is a game of fight or flight, you know!
Apart from that: I know A COMPULSIVE GAMBLER who is now playing chess instead of losing money.