Starting position #828
Back-rank setup: RBKNQRBN
SP-828 · BastionScout — King off-centre on c or f with a knight starting on the rim (a/h).
Move the pieces right on the board — full Chess960 rules, castle by dropping the king on the rook.
Position features
The king starts on c1, the rooks on a1 and f1, the queen on e1.
The king already stands on c1, so castling long moves only the rook, from a1 to d1.
The bishops stand on b1 and g1; their long diagonals reach h7 and a7 once the c- and f-pawns step aside.
One second-rank pawn starts with no defender at all: g2.
The setup belongs to the BastionScout family; read right to left it becomes position 140.
The engine's main line opens with e4, putting a pawn straight into the centre.
Every sentence here is computed from the setup itself and can be checked on the board.
Balance
MBI 13 Morozov Balance Index: 13 of 100 — class D — largest edge.
- Engine evaluation of the starting position: +41 centipawns for White (depth 47, 400 000 000 nodes).
- Rank 833 of 960 by balance — 1 is the most balanced start.
- Balance band L — large edge · dynamics along the play-out: stable
- Evaluation along the engine's main line (60 half-moves): +29 → +27 → +19 → +11
Position facts
- Mirror twin: position #140
- The king starts on c, the rooks on a and f
- It becomes the daily position in 131 days
Puzzles from this position
- Attack on the uncastled king: queen to h7 (h6) — Chess960 specifics · 780
- Attack on the uncastled king: knight to a7 (b5·7) — Chess960 specifics · 920
- Winning blow: queen to b7 (a8·2) — Chess960 specifics · 970
- Attack on the uncastled king: queen to g8 (c4·3) — Chess960 specifics · 1090
- Winning blow: queen to f3 (h3) — Chess960 specifics · 1280
- Winning blow: rook to e1 (d1·6) — Chess960 specifics · 1390
- Attack on the uncastled king: knight to g7 (f5·24) — Chess960 specifics · 1610
- Mate in 3: queen to e7 (h4) — Chess960 specifics · 1630
- Winning blow: queen to a8 (a7·12) — Chess960 specifics · 1870
- Chess960 tactic on b6 (e3·2) — Chess960 specifics · 2400
This position appears in course day 122
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Commentary
The king already stands on c1 and the rook already occupies f1, so each castling sends a single piece — the rook one way, the king the other. The bishops are on b1 and g1, one on each colour. The pawn on g2 is the one that begins without a defender. The queen is on e1, the knights on d1 and h1 — the cornered one has g3 as its only move, and the second rook is on a1. White's edge here is a wide one, +41 centipawns: e4 e5 c3 Ne6 Bc2 f6.
Written from the measured facts above and checked against the board before publishing. All 960 positions have one.