Starting position #322
Back-rank setup: BNRQKBRN
SP-322 · 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 c1 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.
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 343.
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 91 Morozov Balance Index: 91 of 100 — class A — most balanced.
- Engine evaluation of the starting position: +13 centipawns for White (depth 47, 400 000 000 nodes).
- Rank 95 of 960 by balance — 1 is the most balanced start.
- Balance band S — slight edge · dynamics along the play-out: equalizing
- Evaluation along the engine's main line (70 half-moves): +17 → +30 → 0 → 0
- Deeper check (1 200 000 000 nodes, depth 54): +12 cp, -1 cp against the base run — verified
Position facts
- Mirror twin: position #343
- The king starts on e, the rooks on c and g
- It becomes the daily position in 26 days
Puzzles from this position
- Attack on the uncastled king: bishop to h5 (e2) — Chess960 specifics · 780
- Attack on the uncastled king: bishop to b5 (e2·2) — Chess960 specifics · 780
- Attack on the uncastled king: pawn to f4 (e3·22) — Chess960 specifics · 780
- Attack on the uncastled king: knight to h5 (g3·15) — Chess960 specifics · 780
- Attack on the uncastled king: bishop to f6 (a1·13) — Chess960 specifics · 780
- Winning blow: king to h1 (g1·8) — Chess960 specifics · 970
- Mate in 2: knight to f6 (h5·2) — Chess960 specifics · 1320
- Winning blow: knight to h6 (g4·3) — Chess960 specifics · 1470
- Mate in 3: king to g1 (f2) — Chess960 specifics · 1630
- Chess960 tactic on b1 (f1) — Chess960 specifics · 2120
This position appears in course day 45
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Commentary
Castling is ordinary in both directions from e1, with the queen on d1 next to her king. A knight sits in the corner on h1 with g3 as its only move, the second on b1. A bishop is shut into the corner on a1 with a single diagonal to h8; the second bishop is on f1. The pawns on a2 and h2 both begin with no defender at all. The engine keeps the edge small, +13 centipawns, and sends the queen out early: e3 e6 b3 b6 Qh5 h6.
Written from the measured facts above and checked against the board before publishing. All 960 positions have one.