Golden Knight Mission

Golden Knight Mission is a fun puzzle game where you have to make a check to the black king. You may play with the golden knight only; find the path to the black king so that the knight will not be captured on the way.

Instructions

The Goal: Move the golden knight so that the black king will be placed in check. Hint: the check may be given by another white piece, not necessary by the knight.
The Moves: Click on the fields where the golden knight should move. Black pieces will remain still unless they are forced or consider gainful to capture the golden knight. Once the golden knight is captured, black and white pieces may perform subsequent captures on that field only. If the black king is not under check at the end of captures, the goal is missed.
Black pieces are forced to capture the golden knight, if the black king is under check.
Black pieces consider gainful to capture the golden knight, if they may gain a material advantage. Hint: pawns are cheaper than the golden knight, regular knights are slightly cheaper; bishops and other pieces are costly.
The Missions: Each mission is generated randomly. It may be easy or not; the solution may be 1 move length or 20 moves, or may not exist at all.
If you believe the solution does not exist, press the button "Mission: Impossible". If you are right, the mission will be considered as solved.
The number of pieces on the board (i.e. position complexity) grows with the level number. The level number grows with solved missions count.
The Score: The score is earned by solving missions. Points are credited for low number of moves (shortest path), for bonus time left, for the solved mission itself.
The Timing: You have some time for each mission. If the time is over, do not worry: you can still solve the mission, you just won't get additional points for the time left.
Secret Hint: For careful readers of instructions!
If you capture all the black pieces, you can get a special bonus: an additional life.
Of course, it may be possible only on starting levels, when black pieces do not protect each other.