White 66 vs Black 258
White plays from setup 66 (BNNRKBQR), Black from setup 258 (BNRKNBQR). Rank 294 of 10420 verified pairs; evaluation 0 cp (White's point of view) at stage 8, depth 51.
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. 258, mirrored on their own side; the pawns stand as usual.
Black · No. 258
White · No. 66
Moves as usual: White starts; everything else follows the Chess960 rules.
Evaluation by stage
| Stage | Eval, cp |
|---|---|
| S0 | -10 |
| S1 | +4 |
| S2 | +9 |
| S3 | -3 |
| S4 | +13 |
| S5 | +1 |
| S6 | -4 |
| S7 | +8 |
| S8 | 0 |
Engine's main line: b2b3 b7b6 e2e3 h7h5 h2h4 c7c5 c1e2 e7e6
FEN (Shredder, castling rights by rook files): bnrknbqr/pppppppp/8/8/8/8/PPPPPPPP/BNNRKBQR w DHch - 0 1
Mirror twin: White 887 vs Black 599 — a different position (castling squares are fixed), not evaluated by the search.