177. You waste your time deciding which pawn to push.

178. Your pawn reaches the back rank and you proudly proclaim, "King me!"

180. White plays 1. e4 and you resign, thinking you're in zugzwang.

181. Your online chess rating is still 1200.

182. You don't play any chess because you're afraid of losing
183. You think Bughouse is a game where you put as many bugs as you can on a chessboard
184. You insist on promoting your pawn to a pawn
185. When your opponent says "check", you move the queen.
186. You put the knights on the c and f files, and put the bishops on the b and g files
187. You don't know what a file is
188. You don't know what a rank is
189. You insist on making a 9x9 chessboard because you need more pieces to win
190. You think that kings can't capture pieces
191. When your opponent says "checkmate", you call another player to check the board
192. You think chess is a card game
193. You spell Bobby Fischer as Bobby Fisher
194. You think Bobby Fischer was a fisherman

195. You think your rating is your ranking, so you think you're the best in the world

196. You think that a fork is when you put the piece on a fork
197. When you create a skewer, you start grilling the pieces on a skewer

198. You think that capturing a piece en prise means you get a prize
199. You think that the king is a regular piece that can be captured
200. You think that castling means to bring out your rooks, since you think they're called castles

201. You, as white, don't know how to mate in this position

When white claims check mate

202. You only play chess on rainy days to entertain yourself
203. You don't bother playing--you just watch other people's games
204. You always put your knights on the rim
205. You fianchetto your king
206. You think fianchetto is an Italian food
207. You don't know Karpov's first name
208. You don't know the difference between Kasparov and Karpov
209. You pronounce FIDE as fy-d

210. You play the King-pawn endgame with a Bishop. 

211. You castle Queenside by switching the Rook's and the Queen's places. 

212. You play Nh9 on the 57th move. 

213. You think you can't move the King unless it's in Check or all of your pieces are captured. 

214. You're calling the squares on your board as White and Black. 

215. Your king and queen are forked, and you don't know which piece to save
216. You think the white pieces only go on white squares
217. You think the black pieces only go on black squares
218. You think bishops are the most mobile in the corner with open diagonals

219. You think that when a piece goes through one corner/edge of the board, it emerges from the opposite one. 

220. You think that only Philidor played the French Defense

221. You don't think that the coordinates on the board matter, so sometimes you set up your white pieces on the 7 & 8 rank, and then other times you put the black pieces on the 1 & 2 rank.
222. You try triple-jumping 3 pieces with your knight, like people do in checkers
223. You just can't wrap your mind around how the knight moves
224. You don't get the point of stalemate--if you trapped the king, it should be a win for you