How do I convert being a soldier up in the endgame?
These answers restate the rules implemented by our open-source engine, which follows the WXF laws and is regression-tested against the official 110-diagram repetition casebook. Where an answer refers to a specific position, that position lives on the linked reference page, where the build verifies it against the engine before publishing.
Direct answer
Do not expect the soldier to win the game by itself; use it to create a second problem for the defence. A lone extra soldier is often not enough to force a win against intact material, but pushed toward the palace and supported, it can pin down a defender or eventually cover a mating point that turns another piece's check into checkmate.
Push toward the palace, not the edge
Since a soldier never retreats, the direction it advances is a permanent decision. A soldier steered toward the centre threatens to become a genuine attacking piece, exactly as described in winning with a crossed soldier; one pushed to the corner is close to useless for the rest of the game.
Use it to tie the defence down
Even without immediately winning material, a soldier deep in enemy territory forces the opponent to keep a piece nearby watching it. That is a real gain, freeing your other pieces to build a second threat elsewhere with one fewer defender to face.
Related questions
Is a soldier up always winning?
No, particularly against an intact defence of two advisors and two elephants. Check the material table before assuming.
Should I trade pieces while a soldier up?
Usually yes, since simplifying brings you closer to a position where the extra soldier's value is undiluted.
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