Editing Endgame study (section)

===Early example===
{{Chess diagram
|tleft
|al-Adli (~800–870), <br />''Arabic manuscript'' 1140<ref>Müller & Lamprecht, p. 257</ref>
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|kd|nd|  |  |  |  |  |
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|  |kl|  |  |  |  |  |
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|White wins with either side to move
}}
Most old [[shatranj]] studies are not valid in modern chess because of changed rules. However, the moves of the king, rook, and knight are unchanged.  In this Arabic study White wins because the black knight is poorly placed. With White to move the best move is '''1. Rd1''', but it is not the only winning move. If Black is to move, '''1... Kb8! 2. Kc6! Na5+! 3. Kb6! Nc4+ 4. Kb5! Ne5 5. Re1! Nd7 6. Kc6!''' wins.
{{clear}}