White 121 vs Black 609
White plays from setup 121 (NQRBBNKR), Black from setup 609 (BRNBQKRN). Rank 480 of 10420 verified pairs; evaluation 0 cp (White's point of view) at stage 8, depth 53.
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. 609, mirrored on their own side; the pawns stand as usual.
Black · No. 609
White · No. 121
Moves as usual: White starts; everything else follows the Chess960 rules.
Evaluation by stage
| Stage | Eval, cp |
|---|---|
| S0 | -20 |
| S1 | -1 |
| S2 | +6 |
| S3 | +2 |
| S4 | +10 |
| S5 | +10 |
| S6 | -10 |
| S7 | -6 |
| S8 | 0 |
Engine's main line: c2c4 b7b6 h2h4 e7e6 b2b4 f7f5 d2d4 h8g6
FEN (Shredder, castling rights by rook files): brnbqkrn/pppppppp/8/8/8/8/PPPPPPPP/NQRBBNKR w CHbg - 0 1
Mirror twin: White 841 vs Black 251 — a different position (castling squares are fixed), not evaluated by the search.