Starting position #630
Back-rank setup: RNBKQBRN
SP-630 · 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 d1, the rooks on a1 and g1, the queen on e1.
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.
One second-rank pawn starts with no defender at all: h2.
The setup belongs to the ThroneScout family; read right to left it becomes position 230.
The engine's main line opens with d4, 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 3 Morozov Balance Index: 3 of 100 — class D — largest edge.
- Engine evaluation of the starting position: +51 centipawns for White (depth 47, 400 000 000 nodes).
- Rank 931 of 960 by balance — 1 is the most balanced start.
- Balance band L — large edge · dynamics along the play-out: equalizing
- Evaluation along the engine's main line (60 half-moves): +56 → +35 → +15 → +8
Position facts
- Mirror twin: position #230
- The king starts on d, the rooks on a and g
- It becomes the daily position in 1024 days
Puzzles from this position
- Attack on the uncastled king: pawn to d4 (e3·12) — Chess960 specifics · 780
- Attack on the uncastled king: king to c2 (d1·3) — Chess960 specifics · 780
- Attack on the uncastled king: pawn to e5 (d4·83) — Chess960 specifics · 780
- Attack on the uncastled king: knight to g4 (e3·7) — Chess960 specifics · 920
- Winning blow: rook to h7 (h8·2) — Chess960 specifics · 1010
- Winning blow: king to a2 (b1·19) — Chess960 specifics · 1110
- Winning blow: knight to d4 (e2·2) — Chess960 specifics · 1250
- Attack on the uncastled king: queen to a8 (b7·6) — Chess960 specifics · 1280
- Winning blow: rook to f4 (c4·2) — Chess960 specifics · 1870
- Chess960 tactic on a5 (a4) — Chess960 specifics · 2400
This position appears in course day 26
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Commentary
The king begins on d1 with the queen beside him on e1, and castling is ordinary in both directions. The bishops are on c1 and f1, the knights on b1 and h1 — the cornered one has g3 as its only move. The pawn on h2 has no defender, and c2 leans on the king alone. The rooks are on a1 and g1. White's edge here is a wide one, +51 centipawns: d4 e6 e4 Nc6 Be3 d5.
Written from the measured facts above and checked against the board before publishing. All 960 positions have one.