rnb1kb2/p4prp/2pp2pn/1p2p3/NP5q/B1PP1P2/PQ2P1PP/RK3BNR w q - 2 13
FEN state: rnb1kb2/p4prp/2pp2pn/1p2p3/NP5q/B1PP1P2/PQ2P1PP/RK3BNR w q - 2 13 ; Best move: g2g3
The current state of the chess board is: Black rook at a8, black knight at b8, black bishop at c8, black king at e8 and black bishop at f8. Black pawn at a7, black pawn at f7, black rook at g7 and black pawn at h7. Black pawn at c6, black pawn at d6, black pawn at g6 and black knight at h6. Black pawn at b5 and black pawn at e5. White knight at a4, white pawn at b4 and black queen at h4. White bishop at a3, white pawn at c3, white pawn at d3 and white pawn at f3. White pawn at a2, white queen at b2, white pawn at e2, white pawn at g2 and white pawn at h2. White rook at a1, white king at b1, white bishop at f1, white knight at g1 and white rook at h1. Black queenside is the only castle move available. Half move number is 2. Full move number is 13. White to move.