r1b1k1r1/p2pp3/1Bn4b/4P1pn/P4pP1/p6P/1PP2P1R/5KN1 w q - 3 23
FEN state: r1b1k1r1/p2pp3/1Bn4b/4P1pn/P4pP1/p6P/1PP2P1R/5KN1 w q - 3 23 ; Best move: b2a3
The current state of the chess board is: Black rook at a8, black bishop at c8, black king at e8 and black rook at g8. Black pawn at a7, black pawn at d7 and black pawn at e7. White bishop at b6, black knight at c6 and black bishop at h6. White pawn at e5, black pawn at g5 and black knight at h5. White pawn at a4, black pawn at f4 and white pawn at g4. Black pawn at a3 and white pawn at h3. White pawn at b2, white pawn at c2, white pawn at f2 and white rook at h2. White king at f1 and white knight at g1. Black queenside is the only castle move available. Half move number is 3. Full move number is 23. White to move.