Both predicted score and centipawns evaluation can be calculated from the Lc0 formula:

Technical Explanation of Leela Chess Zero

Code: Select all

```
cp = 111.714640912 * tan(1.5620688421 * Q)
score = (Q + 1)/2 // 0 =< score =< 1
Q = 2*score - 1 // -1 =< Q =< 1
pawns = cp/100 = 1.11714640912 * tan(1.5620688421 * Q)
pawns = 1.11714640912 * tan(1.5620688421 * (2*score - 1))
score = 0.5 + (0.5/1.5620688421)*atan(pawns/1.11714640912)
```

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```
pawns ~ 1.745059597*(2*score - 1) // When score is close to 50%
score ~ 0.5 + 0.2865231655*pawns // When pawns are close to 0
```

------------------------

Once said that, I am curious about Zaitsev (9. ... Bb7), Chigorin (9. ... Na5) and Breyer (9. ... Nb8) variations of the Spanish Opening:

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 d6 8.c3 O-O 9.h3

Current analysis of chessdb.cn Chess Cloud Database Query Interface returns the following evals:

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```
Move Evals from white POV
9. ... Bb7 +14 cp
9. ... Na5 +16 cp
9. ... Re8 +16 cp
9. ... h6 +23 cp
9. ... Bd7 +27 cp
9. ... a5 +34 cp
9. ... Nb8 +36 cp
9. ... Be6 +38 cp
9. ... Nd7 +38 cp
```

Regards from Spain.

Ajedrecista.