Dens · Devilish
Dens Devilish Level 412
Exactly the board of Devilish level 412 in the app: 10×10 cells, 10 dens, 10 monsters to place. Step through the solution one monster at a time, each with the reason why, or open the full solution.
Pro levelDevilish comes with Beasties Pro in the app, a one-time purchase with no subscription. The solution here is free. How Free and Pro work
Rows count from the top, columns from the left. Tap Next monster to see where the first one goes, and why.










All 10 monsters as a list
Rows count from the top, columns from the left. Each line says where the next monster goes and why.
- row 6, column 4. The orange den has only one free spot left. Its monster moves in there.
- row 1, column 8. The pink den fits only into row 1. Whichever spot its monster takes, that line is used: cross out the rest of it. The red den fits only into column 10. Whichever spot its monster takes, that line is used: cross out the rest of it. The yellow den fits only into column 9. Whichever spot its monster takes, that line is used: cross out the rest of it. The pink den has only one free spot left. Its monster moves in there.
- row 9, column 6. Row 5: a monster on a marked spot would see or touch all of its free spots. Nothing would be left there, so cross the marked spots out. Column 7: a monster on a marked spot would see or touch all of its free spots. Nothing would be left there, so cross the marked spots out. Column 10: a monster on a marked spot would see or touch all of its free spots. Nothing would be left there, so cross the marked spots out. The blue den: a monster on a marked spot would see or touch all of its free spots. Nothing would be left there, so cross the marked spots out. The turquoise den: a monster on a marked spot would see or touch all of its free spots. Nothing would be left there, so cross the marked spots out. The red den, the lilac den and the turquoise den fit only into rows 8, 9 and 10. Together they fill these lines, so every other spot there is out. The purple den fits only into column 7. Whichever spot its monster takes, that line is used: cross out the rest of it. The green den: a monster on a marked spot would see or touch all of its free spots. Nothing would be left there, so cross the marked spots out. Try a monster on the marked spot and follow it through: row 2 ends up without a spot. So no monster goes there. Try a monster on the marked spot and follow it through: row 2 ends up without a spot. So no monster goes there. Column 6: a monster on a marked spot would see or touch all of its free spots. Nothing would be left there, so cross the marked spots out. The lilac den fits only into row 9. Whichever spot its monster takes, that line is used: cross out the rest of it. Try a monster on the marked spot and follow it through: row 5 ends up without a spot. So no monster goes there. Try a monster on the marked spot and follow it through: row 2 ends up without a spot. So no monster goes there. Try a monster on the marked spot and follow it through: row 2 ends up without a spot. So no monster goes there. Try a monster on the marked spot and follow it through: row 2 ends up without a spot. So no monster goes there. Column 6 has only one free spot left, so a monster goes there.
- row 2, column 3. Try a monster on the marked spot and follow it through: the mint den ends up without a spot. So no monster goes there. The blue den has only one free spot left. Its monster moves in there.
- row 7, column 2. The green den has only one free spot left. Its monster moves in there.
- row 3, column 9. The yellow den has only one free spot left. Its monster moves in there.
- row 10, column 1. The turquoise den has only one free spot left. Its monster moves in there.
- row 4, column 5. The mint den has only one free spot left. Its monster moves in there.
- row 5, column 7. The purple den has only one free spot left. Its monster moves in there.
- row 8, column 10. The red den has only one free spot left. Its monster moves in there.
Every player gets the same levels in the same order, so this board matches your app. Every Dens level has exactly one solution, and you can always reach it by logic. How to play Dens