r1bq1bnr/p1ppk3/1p3p1p/1N2p1p1/P1Pn3P/3PPN1R/1P3PP1/R1BQKB2 b Q - 0 11
FEN state: r1bq1bnr/p1ppk3/1p3p1p/1N2p1p1/P1Pn3P/3PPN1R/1P3PP1/R1BQKB2 b Q - 0 11 ; Best move: d4b5
The current state of the chess board is: Black rook at a8, black bishop at c8, black queen at d8, black bishop at f8, black knight at g8 and black rook at h8. Black pawn at a7, black pawn at c7, black pawn at d7 and black king at e7. Black pawn at b6, black pawn at f6 and black pawn at h6. White knight at b5, black pawn at e5 and black pawn at g5. White pawn at a4, white pawn at c4, black knight at d4 and white pawn at h4. White pawn at d3, white pawn at e3, white knight at f3 and white rook at h3. White pawn at b2, white pawn at f2 and white pawn at g2. White rook at a1, white bishop at c1, white queen at d1, white king at e1 and white bishop at f1. White queenside is the only castle move available. Half move number is 0. Full move number is 11. Black to move.