Starting position #594
Back-rank setup: BRQNKBRN
SP-594 · 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 e1, the rooks on b1 and g1, the queen on c1.
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.
The second rank carries 2 pawns with no defender at all: a2, h2.
The setup belongs to the ThroneScout family; read right to left it becomes position 263.
The engine's main line opens with f4.
Every sentence here is computed from the setup itself and can be checked on the board.
Balance
MBI 47 Morozov Balance Index: 47 of 100 — class C — noticeable edge.
- Engine evaluation of the starting position: +27 centipawns for White (depth 42, 400 000 000 nodes).
- Rank 502 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): +31 → +31 → +14 → +1
Position facts
- Mirror twin: position #263
- The king starts on e, the rooks on b and g
- It becomes the daily position in 38 days
Puzzles from this position
- Attack on the uncastled king: pawn to c5 (b4·8) — Chess960 specifics · 780
- Winning blow: rook to g5 (g4) — Chess960 specifics · 1010
- Winning blow: bishop to e5 (a1·10) — Chess960 specifics · 1200
- Winning blow: king to b1 (c1·24) — Chess960 specifics · 1250
- Mate in 2: queen to h8 (e8·2) — Chess960 specifics · 1320
- Castling-960 to the rescue on b8 (e8·2) — Castling-960 · 1340
- Mate in 3: queen to f5 (e4) — Chess960 specifics · 1630
- Mate in 3: rook to f6 (f1·4) — Chess960 specifics · 1630
- Winning blow: rook to f8 (f1·22) — Chess960 specifics · 1870
- Mate in 3: queen to f7 (g6·2) — Chess960 specifics · 1990
This position appears in course day 139
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Commentary
Castling is ordinary in both directions from e1, with the rooks on b1 and g1. A bishop is shut into the corner on a1 with a single diagonal to h8; the second bishop is on f1. Two pawns begin with no defender at all: a2 and h2. The queen is on c1, the knights on d1 and h1 — the cornered one has g3 as its only move. The engine's main line opens f4 e6, then c4 b5 c5 a5.
Written from the measured facts above and checked against the board before publishing. All 960 positions have one.