Starting position #466
Back-rank setup: BRNNKBRQ
SP-466 · ThroneGuard — A centre-file king with no knight on the edge; a position and its mirror twin always share this family.
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 h1.
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 679.
The engine's main line opens with g4.
Every sentence here is computed from the setup itself and can be checked on the board.
Balance
MBI 24 Morozov Balance Index: 24 of 100 — class D — largest edge.
- Engine evaluation of the starting position: +35 centipawns for White (depth 42, 400 000 000 nodes).
- Rank 732 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 (37 half-moves): +24 → 0
Position facts
- Mirror twin: position #679
- The king starts on e, the rooks on b and g
- It becomes the daily position in 53 days
Puzzles from this position
- Attack on the uncastled king: queen to f6 (f4) — Chess960 specifics · 780
- Winning blow: queen to d5 (d7) — Chess960 specifics · 780
- Attack on the uncastled king: pawn to f5 (g4·18) — Chess960 specifics · 780
- Winning blow: queen to g1 (h1·3) — Chess960 specifics · 920
- Winning blow: knight to e2 (c3·3) — Chess960 specifics · 970
- Attack on the uncastled king: knight to c7 (a6) — Chess960 specifics · 1060
- Winning blow: king to d2 (e1·18) — Chess960 specifics · 1280
- Winning blow: rook to b1 (g1·2) — Chess960 specifics · 1610
- Winning blow: bishop to c4 (d3·9) — Chess960 specifics · 1870
- Chess960 tactic on d8 (d1·2) — Chess960 specifics · 2400
This position appears in course day 54
In your browser or in the Android app. Nothing to install · Free, no ads
Commentary
Castling is ordinary in both directions from e1, with the rooks on b1 and g1. A bishop is shut into the corner on a1 with a single diagonal to h8; the second bishop is on f1. Among the pawns, c2 has no defender, and d2 leans on the king alone. The queen begins in the far corner on h1, the knights on c1 and d1. The engine pushes the g-pawn twice in six half-moves: g4 h5 g5 g6 b3 Bg7.
Written from the measured facts above and checked against the board before publishing. All 960 positions have one.