rnbk2nr/pp1p3p/4pb2/2p3q1/3N2p1/BP1P3N/PQP1P1PP/R3KBR1 b Q - 0 12
FEN state: rnbk2nr/pp1p3p/4pb2/2p3q1/3N2p1/BP1P3N/PQP1P1PP/R3KBR1 b Q - 0 12 ; Best move: g5e5
The current state of the chess board is: Black rook at a8, black knight at b8, black bishop at c8, black king at d8, black knight at g8 and black rook at h8. Black pawn at a7, black pawn at b7, black pawn at d7 and black pawn at h7. Black pawn at e6 and black bishop at f6. Black pawn at c5 and black queen at g5. White knight at d4 and black pawn at g4. White bishop at a3, white pawn at b3, white pawn at d3 and white knight at h3. White pawn at a2, white queen at b2, white pawn at c2, white pawn at e2, white pawn at g2 and white pawn at h2. White rook at a1, white king at e1, white bishop at f1 and white rook at g1. White queenside is the only castle move available. Half move number is 0. Full move number is 12. Black to move.