Starting position #150
Back-rank setup: NRBNQBKR
SP-150 · RampartScout — King on the wing (b/g) with a knight on the rim (a/h) — the rarest 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 g1, the rooks on b1 and h1, the queen on e1.
The king already stands on its castled square, so castling short moves only the rook, from h1 to f1.
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: a2.
The setup belongs to the RampartScout family; read right to left it becomes position 806.
The engine's main line opens with e4, 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 37 Morozov Balance Index: 37 of 100 — class C — noticeable edge.
- Engine evaluation of the starting position: +30 centipawns for White (depth 46, 400 000 000 nodes).
- Rank 614 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): +37 → +31 → +30 → 0
Position facts
- Mirror twin: position #806
- The king starts on g, the rooks on b and h
- King and rook are neighbours — castling from adjacent squares feels unusual
- It becomes the daily position in 240 days
Puzzles from this position
- Attack on the uncastled king: knight to f5 (e3) — Chess960 specifics · 780
- Attack on the uncastled king: queen to d5 (e5) — Chess960 specifics · 780
- Attack on the uncastled king: bishop to d5 (e4·4) — Chess960 specifics · 920
- Winning blow: rook to f4 (h4) — Chess960 specifics · 920
- Winning blow: rook to c1 (a1·2) — Chess960 specifics · 920
- Winning blow: rook to a1 (f1) — Chess960 specifics · 1060
- Winning blow: rook to f1 (f2·2) — Chess960 specifics · 1200
- Winning blow: rook to g7 (g3·10) — Chess960 specifics · 1470
- Attack on the uncastled king: rook to e8 (e1·22) — Chess960 specifics · 1610
- Winning blow: queen to g6 (e6·4) — Chess960 specifics · 1870
This position appears in course day 70
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Commentary
A knight starts in the corner on a1 with b3 as its only move, outside a rook that begins on b1. The king is already on g1, so short castling moves the rook alone. On the second rank, a2 begins with no defender at all. The queen is on e1, the bishops on c1 and f1. The engine's main line opens e4 e5, then Nb3 Nb6 d4 exd4.
Written from the measured facts above and checked against the board before publishing. All 960 positions have one.