Starting position #450
Back-rank setup: BRNNKBQR
SP-450 · ThroneGuard — King on a central file (d/e) with both knights on inner files — the classic-type setup.
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 h1, the queen on g1.
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.
A bishop starts in the corner on a1: it has a single diagonal, which the b-pawn unlocks, running out to h8.
One second-rank pawn starts with no defender at all: c2.
The setup belongs to the ThroneGuard family; read right to left it becomes position 695.
The engine's main line opens with f3.
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 49, 400 000 000 nodes).
- Rank 706 of 960 by balance — 1 is the most balanced start.
- Balance band M — moderate edge · dynamics along the play-out: stable
- Evaluation along the engine's main line (60 half-moves): +31 → +33 → +28 → 0
Position facts
- Mirror twin: position #695
- The king starts on e, the rooks on b and h
- It becomes the daily position in 203 days
Puzzles from this position
- Attack on the uncastled king: pawn to e5 (d4·2) — Chess960 specifics · 780
- Attack on the uncastled king: knight to a2 — Chess960 specifics · 780
- Attack on the uncastled king: pawn to f3 (g2·21) — Chess960 specifics · 780
- Attack on the uncastled king: queen to h8 (g7·4) — Chess960 specifics · 920
- Attack on the uncastled king: knight to g7 (f5·13) — Chess960 specifics · 920
- Winning blow: knight to d6 (e4·5) — Chess960 specifics · 1060
- Winning blow: pawn to e5 (d4·22) — Chess960 specifics · 1200
- Winning blow: queen to h7 (f7) — Chess960 specifics · 1280
- Mate in 3: rook to b6 — Chess960 specifics · 1630
- Winning blow: pawn to f8 (f7·3) — Chess960 specifics · 1870
This position appears in course day 26
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Commentary
Castling is ordinary in both directions from e1, with the rooks on b1 and h1. A bishop is shut into the corner on a1 with a single diagonal to h8; the second bishop is on f1. The pawn on c2 has no defender, and d2 leans on the king alone. The queen is on g1, the knights on c1 and d1. Both sides mirror each other for six half-moves: f3 f6 e4 e5 b4 b5.
Written from the measured facts above and checked against the board before publishing. All 960 positions have one.