1rbq1rk1/2pp2pp/n4p1n/pp6/PbPPpP1P/NP2P1P1/3Q3R/R1B1KBN1 b Q - 0 13
FEN state: 1rbq1rk1/2pp2pp/n4p1n/pp6/PbPPpP1P/NP2P1P1/3Q3R/R1B1KBN1 b Q - 0 13 ; Best move: b5c4
The current state of the chess board is: Black rook at b8, black bishop at c8, black queen at d8, black rook at f8 and black king at g8. Black pawn at c7, black pawn at d7, black pawn at g7 and black pawn at h7. Black knight at a6, black pawn at f6 and black knight at h6. Black pawn at a5 and black pawn at b5. White pawn at a4, black bishop at b4, white pawn at c4, white pawn at d4, black pawn at e4, white pawn at f4 and white pawn at h4. White knight at a3, white pawn at b3, white pawn at e3 and white pawn at g3. White queen at d2 and white rook at h2. White rook at a1, white bishop at c1, white king at e1, white bishop at f1 and white knight at g1. White queenside is the only castle move available. Half move number is 0. Full move number is 13. Black to move.