Extreme logical puzzle playing with 〇 and × 

Simple but addictive! The Stick-out of brain training puzzle playing only with ? and ×!

Simple logical puzzle with easy rules, filling ? and× in the cells !
There are 1000 quiz in 4 difficulties levels, try gradually the more difficult one, then fully enjoy the depth of LOGIC PUZZLE !

?Rules for ?× LOGIC PUZZLE?
?Fill the same numbers of ? and ×in columns and rows.
?No more than 2 same symbols,
?No same filling patterns with other columns/rows.