user13147: Sam Loyd, 1860 
[fen "8/8/8/8/B6n/7p/6k1/4K3 w - - 0 1"]

1.Bd7!! h2 2.Bc6 Kg1 3.Bh1!! Kxh1 4.Kf2.

(Ke1, Ba4; Kg2, Nh4, h3) says mate in 54  after 1.Bd7!! h2 2.Bc6 Kg1 3.Bh1!! Kxh1 4.Kf2.
This is a textbook draw, as the king is on the same square as the knight (with Black to move). For example, in some moment 1...Nf4+ 2.Kf1 Ng3+ 3.Kf2 Ne2 4.Kf1. (No. 205, BCE. Fine.)
Mate in 54? What's up with that?


user12873: Mmm that's not mate in 54, just a -52.40 evaluation (equivalent of being "52.4 pawns" down).
The engine is calculating far ahead and can't find a forced win, but sees Black's up a pawn and knight so it evaluates based off that. I'm surprised the engine wasn't smart enough to evaluate as a draw though, especially if you're using current Stockfish?

user18143: Stockfish 10 of lichess @ depth 74 says it's draw. Only if you can give more details about the version of Stockfish you used


13147: <p>Sam Loyd, 1860 </p>

<pre><code>[fen "8/8/8/8/B6n/7p/6k1/4K3 w - - 0 1"]

1.Bd7!! h2 2.Bc6 Kg1 3.Bh1!! Kxh1 4.Kf2.
</code></pre>

<p>(Ke1, Ba4; Kg2, Nh4, h3) says mate in 54  after 1.Bd7!! h2 2.Bc6 Kg1 3.Bh1!! Kxh1 4.Kf2.</p>

<p>This is a textbook draw, as the king is on the same square as the knight (with Black to move). For example, in some moment 1...Nf4+ 2.Kf1 Ng3+ 3.Kf2 Ne2 4.Kf1. (No. 205, BCE. Fine.)</p>

<p>Mate in 54? What's up with that?</p>

<p><img src="https://i.stack.imgur.com/7gLoa.jpg" alt="enter image description here"></p>
 12873: <p>Mmm that's not mate in 54, just a -52.40 evaluation (equivalent of being "52.4 pawns" down).</p>

<p>The engine is calculating far ahead and can't find a forced win, but sees Black's up a pawn and knight so it evaluates based off that. I'm surprised the engine wasn't smart enough to evaluate as a draw though, especially if you're using current Stockfish?</p>
 18143: <p>Stockfish 10 of lichess @ depth 74 says it's draw. Only if you can give more details about the version of Stockfish you used</p>

<p><a href="https://i.stack.imgur.com/d9pl0.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/d9pl0.png" alt="enter image description here"></a></p>
