Starting position #688
Back-rank setup: BBRQKNNR
SP-688 · 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 c1 and h1, the queen on d1.
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: g2.
The setup belongs to the ThroneGuard family; read right to left it becomes position 463.
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 34 Morozov Balance Index: 34 of 100 — class C — noticeable edge.
- Engine evaluation of the starting position: +31 centipawns for White (depth 47, 400 000 000 nodes).
- Rank 634 of 960 by balance — 1 is the most balanced start.
- Balance band M — moderate edge · dynamics along the play-out: equalizing
- Evaluation along the engine's main line (60 half-moves): +50 → -4 → 0
Position facts
- Mirror twin: position #463
- The king starts on e, the rooks on c and h
- It becomes the daily position in 1396 days
Puzzles from this position
- Attack on the uncastled king: queen to h8 (g7) — Chess960 specifics · 620
- Attack on the uncastled king: bishop to d4 (b2) — Chess960 specifics · 780
- Attack on the uncastled king: pawn to d6 (c5·24) — Chess960 specifics · 780
- Winning blow: knight to e6 (g5·9) — Chess960 specifics · 1060
- Winning blow: queen to c6 (c3) — Chess960 specifics · 1150
- Winning blow: pawn to e3 (f2·5) — Chess960 specifics · 1200
- Attack on the uncastled king: queen to d2 (a5) — Chess960 specifics · 1340
- Mate in 3: knight to g6 (h4) — Chess960 specifics · 1630
- Winning blow: pawn to b8 (a7) — Chess960 specifics · 1870
- Attack on the uncastled king: queen to g7 (d4·4) — Chess960 specifics · 2170
This position appears in course day 7
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 queen on d1 next to her king. A bishop is shut into the corner on a1 with a single diagonal to h8; the second works the light squares from b1. Among the pawns, g2 has no defender, and f2 leans on the king alone. The knights stand side by side on f1 and g1, the rooks on c1 and h1. The main line of the run opens b3 Nf6, then e4 b5 c4 bxc4.
Written from the measured facts above and checked against the board before publishing. All 960 positions have one.