Surviving a tactical nuclear bomb explosion is an incredibly challenging task, and the likelihood of survival depends on several factors such as the yield of the bomb, the distance from the blast, and the effectiveness of protective measures taken. Here are some general guidelines to increase your chances of survival:

1. Seek Immediate Shelter:

- If you witness a nuclear detonation, immediately seek shelter in the nearest substantial building or structure that can provide shielding. This could be a basement, underground parking lot, or a windowless room on the lower floors of a building.

2. Distance Matters:

- The farther you are from the blast site, the better. Even a few hundred meters can make a significant difference in reducing the effects of the explosion.

3. Stay Indoors:

- Unless you are in immediate danger from collapsing structures, it's generally safer to stay indoors rather than venturing outside, where you risk exposure to radiation and other hazardous effects.

4. Block Windows and Doors:

- Seal any gaps around windows and doors with tape, blankets, or other materials to prevent the entry of radioactive dust. Remove curtains or drapes that could catch fire.

5. Turn Off Appliances and Electronics:

- Switch off electrical appliances, including computers and televisions, as the electromagnetic pulse (EMP) from the explosion can damage electronics.

6. Stay Tuned to Emergency Broadcasts:

- If available, listen to local radio or television stations for emergency instructions and updates from civil authorities.

7. Avoid Panic and Stay Calm:

- In such situations, panic can lead to rash decisions. Stay calm and focused to make rational choices for survival.

8. Prepare an Emergency Kit:

- In advance, assemble an emergency kit that includes non-perishable food, water, first aid supplies, flashlights, batteries, and a battery-operated radio.

9. Be Prepared for Limited Resources:

- Understand that resources like power, water, and communication might be disrupted. Be prepared to be self-reliant for some time.

10. Stay Informed and Follow Instructions:

- Trust official sources for information and follow instructions from emergency responders. They will guide you on further actions and potential evacuation plans.

Remember, the effects of a nuclear explosion extend beyond the immediate blast zone, including the release of radioactive particles and long-term health risks. It's crucial to prioritize safety, shelter, and follow credible guidance to increase your chances of survival.