Starting position #582
Back-rank setup: QRBNKBRN
SP-582 · ThroneScout — King on a central file (d/e) 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 e1, the rooks on b1 and g1, the queen on a1.
Castling ends where it always does: king to g1 and rook to f1 on the short side, king to c1 and rook to d1 on the long one.
The bishops stand on c1 and f1; their long diagonals reach h6 and a6 once the d- and e-pawns step aside.
The second rank carries 2 pawns with no defender at all: c2, h2.
The setup belongs to the ThroneScout family; read right to left it becomes position 278.
The engine's main line opens with b3.
Every sentence here is computed from the setup itself and can be checked on the board.
Balance
MBI 26 Morozov Balance Index: 26 of 100 — class C — noticeable edge.
- Engine evaluation of the starting position: +34 centipawns for White (depth 44, 400 000 000 nodes).
- Rank 703 of 960 by balance — 1 is the most balanced start.
- Balance band M — moderate edge · dynamics along the play-out: volatile
- Evaluation along the engine's main line (60 half-moves): +35 → 0 → 0
Position facts
- Mirror twin: position #278
- The king starts on e, the rooks on b and g
- It becomes the daily position in 56 days
Puzzles from this position
- Attack on the uncastled king: bishop to a6 (c4) — Chess960 specifics · 780
- Winning blow: queen to c3 (a1) — Chess960 specifics · 780
- Attack on the uncastled king: bishop to f3 (e2·3) — Chess960 specifics · 780
- Attack on the uncastled king: rook to b8 (b5) — Chess960 specifics · 920
- Winning blow: king to d1 (e1·10) — Chess960 specifics · 970
- Winning blow: knight to a8 (c7·3) — Chess960 specifics · 1200
- Winning blow: knight to f6 (d7·5) — Chess960 specifics · 1340
- Attack on the uncastled king: queen to g8 (b3·4) — Chess960 specifics · 1630
- Winning blow: rook to d8 (d4·10) — Chess960 specifics · 1650
- Mate in 3: queen to f6 (e5·6) — Chess960 specifics · 1990
This position appears in course day 18
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Commentary
Castling is ordinary in both directions from e1, with the rooks on b1 and g1. Two pawns begin with no defender at all: c2 and h2. The bishops are on c1 and f1, the knights on d1 and h1 — the cornered one has g3 as its only move. The queen begins in the far corner on a1. Both sides put a bishop on the long diagonal in the line: b3 Ng6 Ng3 b6 Bb2 Bb7.
Written from the measured facts above and checked against the board before publishing. All 960 positions have one.