Starting position #610
Back-rank setup: BRNQKBRN
SP-610 · ThroneScout — A knight starts on the edge (a/h) and the king sits centrally on d or e; the mirror twin stays in this family too.
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 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: h2.
The setup belongs to the ThroneScout family; read right to left it becomes position 247.
The engine's main line opens with e3.
Every sentence here is computed from the setup itself and can be checked on the board.
Balance
MBI 80 Morozov Balance Index: 80 of 100 — class A — most balanced.
- Engine evaluation of the starting position: +17 centipawns for White (depth 49, 400 000 000 nodes).
- Rank 192 of 960 by balance — 1 is the most balanced start.
- Balance band S — slight edge · dynamics along the play-out: stable
- Evaluation along the engine's main line (60 half-moves): +38 → +24 → +12 → 0
Position facts
- Mirror twin: position #247
- The king starts on e, the rooks on b and g
- It becomes the daily position in 791 days
Puzzles from this position
- Attack on the uncastled king: pawn to d4 (e3·13) — Chess960 specifics · 780
- Attack on the uncastled king: pawn to f4 (e3·14) — Chess960 specifics · 780
- Attack on the uncastled king: pawn to d7 (e6) — Chess960 specifics · 780
- Attack on the uncastled king: bishop to g6 (d3·2) — Chess960 specifics · 920
- Attack on the uncastled king: rook to f1 (h1·2) — Chess960 specifics · 970
- Winning blow: queen to e7 (g5) — Chess960 specifics · 1010
- Winning blow: rook to f1 (g1·2) — Chess960 specifics · 1250
- Winning blow: knight to c6 (d4·14) — Chess960 specifics · 1290
- Mate in 3: queen to f6 (g7·4) — Chess960 specifics · 1760
- Winning blow: pawn to c8 (c7·4) — Chess960 specifics · 2060
This position appears in course day 32
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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 bishop is on f1. Among the pawns, h2 is the one that begins without a defender. The knights are on c1 and h1 — the cornered one has g3 as its only move — and the rooks are on b1 and g1. The engine sends the queen out on the third half-move: e3 e6 Qh5 h6 f4 b6.
Written from the measured facts above and checked against the board before publishing. All 960 positions have one.