White 66 vs Black 631
White plays from setup 66 (BNNRKBQR), Black from setup 631 (RNBKQRNB). Rank 295 of 10420 verified pairs; evaluation 0 cp (White's point of view) at stage 8, depth 56.
By engine checks, the start is close to equal.
How to play with different setups
White sets up the pieces by position No. 66, Black by position No. 631, mirrored on their own side; the pawns stand as usual.
Black · No. 631
White · No. 66
Moves as usual: White starts; everything else follows the Chess960 rules.
Evaluation by stage
| Stage | Eval, cp |
|---|---|
| S0 | -18 |
| S1 | -5 |
| S2 | -10 |
| S3 | -13 |
| S4 | -2 |
| S5 | -2 |
| S6 | 0 |
| S7 | 0 |
| S8 | 0 |
Engine's main line: d2d4 b8c6 b2b3 e7e5 d4e5 c6e5 f2f4 e5g4
FEN (Shredder, castling rights by rook files): rnbkqrnb/pppppppp/8/8/8/8/PPPPPPPP/BNNRKBQR w DHaf - 0 1
Mirror twin: White 887 vs Black 226 — a different position (castling squares are fixed), not evaluated by the search.