Imma just post my Eva Q info dump anyways in case anyone else also wants to look into it. I'll start with my favorite find from the movie: Professor Fuyutsuki foreshadowing Kaworu's death!
*Scene where Shinji and Fuyutsuki playing Shogi*
[1:05:19]Fuyutsuki: "You're overthinking, let your mind be still."
[1:05:20]Fuyutsuki: "You'll lose again in another 31 turns."
*31 minutes into the movie run-time later*
[1:36:00]Kaworu's head: *Splat*
Keep in mind the two were playing Shog: capturing the king of the opposite side (that's Kaworu & Gendo). Interesting is that Shogi doesn't necessarily mean "To execute" the captured pieces, but "Recruit" them. If Kaworu is indeed in Eva 13 and will be used by Gendo, Shinji lost his most valuable piece to his father.