1nbqk2r/1p1p2bp/2r2p2/p3p1p1/PQP2Pn1/1P2P3/6PP/RNBK1BNR w k - 4 13
FEN state: 1nbqk2r/1p1p2bp/2r2p2/p3p1p1/PQP2Pn1/1P2P3/6PP/RNBK1BNR w k - 4 13 ; Best move: b4d2
The current state of the chess board is: Black knight at b8, black bishop at c8, black queen at d8, black king at e8 and black rook at h8. Black pawn at b7, black pawn at d7, black bishop at g7 and black pawn at h7. Black rook at c6 and black pawn at f6. Black pawn at a5, black pawn at e5 and black pawn at g5. White pawn at a4, white queen at b4, white pawn at c4, white pawn at f4 and black knight at g4. White pawn at b3 and white pawn at e3. White pawn at g2 and white pawn at h2. White rook at a1, white knight at b1, white bishop at c1, white king at d1, white bishop at f1, white knight at g1 and white rook at h1. Black kingside is the only castle move available. Half move number is 4. Full move number is 13. White to move.