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I've never seen it before

So I've played a good game and I got an outstanding final position, however the "engine bar" (sorry for my english) doesn't like the last move and it gives black the advantage. lichess.org/yUUPUQiz/white#83

Is it a bug?
There seems to be some major problem with the engine analysis right now.

Complete joke lines like 1. f3 Nc6 2. Kf2 d5 3. Kg3 Nh6 4. Kh4 (doing nothing but move the white king as far forward as possible) are given a +15 advantage by Stockfish 10 apparently.

Maybe they accidently switched chess for antichess in the last patch?

Hope it gets fixed soon.
@weetbix2 This is evaluated as +15 because you can win the White Queen in this position with 4. Nf5+ !

If you play 5. Kg5, then 5... e5+ followed by 6... Qh4#

If you play 5. Kh5, then 5... Qd6 6. Kg4 Qg6+ 7. Kh3 Qh5#

If you play 5. Kg4, then 5... e5 6. Qe1 Qg5+ 7. Kxg5 h5 8. g4 Be7#

If you play 5. Kh3, then 5... Ne3+ followed by Nxd1

The computer isn't stupid, this line is just terrible for White.

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