Starting position #934
Back-rank setup: RKBRNBQN
SP-934 · RampartScout — A knight in the corner and the king out on the wing (b/g); like every family, it is closed under mirror twins.
Move the pieces right on the board — full Chess960 rules, castle by dropping the king on the rook.
Position features
The king starts on b1, the rooks on a1 and d1, the queen on g1.
From b1 the king makes the longest journey Chess960 allows when castling short: five squares to g1.
The bishops stand on c1 and f1; their long diagonals reach h6 and a6 once the d- and e-pawns step aside.
Every pawn on the second rank is defended from the very first move.
The setup belongs to the RampartScout family; read right to left it becomes position 22.
The engine's main line opens with a4.
Every sentence here is computed from the setup itself and can be checked on the board.
Balance
MBI 7 Morozov Balance Index: 7 of 100 — class D — largest edge.
- Engine evaluation of the starting position: +47 centipawns for White (depth 46, 400 000 000 nodes).
- Rank 886 of 960 by balance — 1 is the most balanced start.
- Balance band L — large edge · dynamics along the play-out: stable
- Evaluation along the engine's main line (60 half-moves): +41 → +24 → +2 → 0
Position facts
- Mirror twin: position #22
- The king starts on b, the rooks on a and d
- King and rook are neighbours — castling from adjacent squares feels unusual
- It becomes the daily position in 816 days
Puzzles from this position
- Attack on the uncastled king: bishop to c3 (f6) — Chess960 specifics · 970
- Attack on the uncastled king: queen to b6 (g1·2) — Chess960 specifics · 1060
- Winning blow: rook to e8 (e1·8) — Chess960 specifics · 1150
- Winning blow: rook to b1 (e1·2) — Chess960 specifics · 1200
- Winning blow: king to a2 (b1·28) — Chess960 specifics · 1250
- Winning blow: rook to a7 (a1·5) — Chess960 specifics · 1290
- Winning blow: queen to a7 (c5·6) — Chess960 specifics · 1430
- Attack on the uncastled king: pawn to e6 (e5·9) — Chess960 specifics · 1610
- Mate in 3: queen to a6 (d3) — Chess960 specifics · 1630
- Winning blow: pawn to b3 (c2·14) — Chess960 specifics · 1870
This position appears in course day 265
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Commentary
The king begins on b1, and short castling takes him five squares across the board to g1. A rook occupies d1, the square a classical setup keeps for the queen, and the second rook stands in the corner on a1. The bishops are on c1 and f1, one on each colour. Every pawn on the second rank begins with a defender — this setup concedes nothing on move one. The queen is on g1, the knights on e1 and h1 — the cornered one has g3 as its only move. White's edge here is a wide one, +47 centipawns: a4 a5 e4 g5 d4 d5.
Written from the measured facts above and checked against the board before publishing. All 960 positions have one.