To return to the Chess Tournament during the Investigate the Blond Man quest in 007 First Light (Chapter 3: “All the Time in the World”), you need to infiltrate a restricted area through a window to bypass the blocked path.
Chess Tournament Return Path details
How to Return to the Chess Tournament
Step 1: Make Your Way to the Climbable Structure
Head toward the building section with a climbable ledge near where you lost the blond man.

Outside, look for a pipe you can climb up on.

Step 2: Climb Up and Enter Through the Window
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Climb up onto the pipe.
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Go through the open window into the building.

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You’ll immediately enter trespassing status.

Step 3: Eliminate or Distract the Guards
Once inside, you’ll encounter guards you need to deal with:
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You can distract them or fight them directly
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If they catch you, you must take them out
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Use environmental cover and tactics as much as possible
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Reinforcements will arrive, so be prepared to fight multiple waves

Step 4: Head to the Door and Return
After clearing all enemies (including reinforcements):
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Head toward the door at the end of the area.

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Go through it to return to the Chess Tournament
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The objective will complete
Critical Mistakes to Avoid
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Don’t ignore reinforcements — they will spawn and can overwhelm you
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Don’t try to sneak past if caught — if guards spot you, you must eliminate them
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Don’t skip clearing the area — the door won’t progress the mission until enemies are dealt with
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Use your environment — cover and tactical positioning make the fight much easier
This shortcut is the only way to progress if you’ve lost track of the blond man or need to bypass the blocked main entrance. The fight is straightforward if you use cover and deal with reinforcements systematically.