White 121 vs Black 624
White plays from setup 121 (NQRBBNKR), Black from setup 624 (BBRNKQRN). Rank 481 of 10420 verified pairs; evaluation 0 cp (White's point of view) at stage 8, depth 61.
By engine checks, the start is close to equal.
How to play with different setups
White sets up the pieces by position No. 121, Black by position No. 624, mirrored on their own side; the pawns stand as usual.
Black · No. 624
White · No. 121
Moves as usual: White starts; everything else follows the Chess960 rules.
Evaluation by stage
| Stage | Eval, cp |
|---|---|
| S0 | -3 |
| S1 | -4 |
| S2 | -31 |
| S3 | -15 |
| S4 | +5 |
| S5 | -7 |
| S6 | 0 |
| S7 | 0 |
| S8 | 0 |
Engine's main line: b2b4 b7b6 a1b3 d8e6 c2c4 c7c5 b4c5 b6c5
FEN (Shredder, castling rights by rook files): bbrnkqrn/pppppppp/8/8/8/8/PPPPPPPP/NQRBBNKR w CHcg - 0 1
Mirror twin: White 841 vs Black 239 — a different position (castling squares are fixed), not evaluated by the search.