View Compilation Error

0_0_27020417_3874.cpp: In function 'bool CHECK()':
0_0_27020417_3874.cpp:29:18: error: 'kin' was not declared in this scope
  return a[3][3]==kin&&a[3][4]==kin&&a[3][5]==kin&&a[4][5]==kin&&a[5][5]==kin&&a[5][4]==kin&&a[5][3]==kin&&a[4][3]==kin;
                  ^
0_0_27020417_3874.cpp: In function 'void dfs(int, char, int)':
0_0_27020417_3874.cpp:48:14: error: too many arguments to function 'bool CHECK()'
  if(CHECK(kin)){
              ^
0_0_27020417_3874.cpp:28:6: note: declared here
 bool CHECK(){
      ^