a is true.
10 Statements

==Round 13==
a) Only the rook can control a fixed number of squares when placed on ay square on an empty board.
b) A bad bishop is a bishop which it's controlling squares are limited due to begin blocked by friendly pawns.
c) Chess960 is named like this as there are 960 possible starting positions of the back-rank pieces.
d) The famous double bishop sacrifice involves hammering f7 with both bishops.
e) Max Euwe was a German grandmaster, and also a world champion.
f) The Saavedra position is an endgame study including pawn and King for White and rook and King for Black in the starting position.
g) Chess.com currently uses chess algebraic notation in chess games.
h) John Denis Martin Nunn is a chess grandmaster and a chess writer and publisher.
i) The fastest way to mate for White (if both sides cooperate) is a mate in 3.
j) A back rank mate normally ends with a rook or Queen.
==Leaderboard==
1. KM101 -- 10 points
2. WBFISHER - 7 points
3. MuhammadAreez10 -- 6 points
4. bendzsa12 -- 5 points
5. alekspachalov99 -- 3 points
6. mahesh_r01 -- 1 point
6. fltsrymy -- 1 point
6. catirene -- 1 point
6. JQuChess -- 1 point
6. jdfam7 -- 1 point

:( statement i) is not true so statements after don't count? Anyway mine is statement g) is true
You're wrong. Statement i) is true!

All correct for now, but there's more, keep going! ;)
@alekspachalov99 -- Consider this variation, 1. e4 e5 2. Qh5 Ke7 3. Qxe5#

All correct for now, but there's more, keep going! ;)
@alekspachalov99 -- Consider this variation, 1. e4 e5 2. Qh5 Ke7 3. Qxe5#
You can even consider 1.e4 f6?! 2.d4 g5????????????????? 3.Qh5#.

==Round 14==
a) The Endless Quiz in chess.com contains 65,535 questions only.
b) Skewer attacks are either absolute or relative.
c) Flight squares are squares which any piece can retreat to when attacked.
d) X-Ray is a synonym for skewer.
e) Artificial castling does not involve the castling move itself when played.
f) A fianchetto involves square clearance.
g) The Cambridge Springs Defence involves a variation called the Colombian Variation.
h) When playing the Mexican Defense, you must first reach the Indian Game.
i) 1. Na3 is the Paris Opening.
j) Users with free memberships can only play 5 tactics a day at the Tactics Trainer in chess.com.
==Leaderboard==
1. KM101 -- 13 points
2. WBFISHER - 7 points
2. MuhammadAreez10 -- 7 points
4. bendzsa12 -- 6 points
5. alekspachalov99 -- 5 points
6. mahesh_r01 -- 1 point
6. fltsrymy -- 1 point
6. catirene -- 1 point
6. JQuChess -- 1 point
6. jdfam7 -- 1 point
6. soupram -- 1 point
@fltsrymy -- You answered statement d on the previous round, right? However, that statement was already posted about 2 posts before yours by WBFISHER.