10 strokes
Kentei exam level 1

obstruct

On'yomi

Main Radical

(KanXi)

Character Breakdown

obstruct
 (Kentei 1)
mountain
やま サン セン (1st, N5)
grow late, night watch, sit up late
さら コウ ふ.ける (7th, N3)
one, one radical (no.1)
イチ いっ ひと- (1st, N5)
day, sun, Japan
ひ にっ ニチ (1st, N5)
mow, cut grass, subdue
ガイ ゲ おさ.める (Kentei 1)

References

Unicode hex code 5CFA
JIS X 0208 1-54-24
Haig, J. New Nelson Japanese-English Character Dictionary 1468
Morohashi Daikanwajiten 8115
Tuttle Dictionary Descriptor Code 3o7.3
Four corner code 2174.6