1nbqkb1r/1ppp1ppn/r7/4p3/1p5p/3PPB1P/PBP2PP1/RN2QKNR w k - 0 10
FEN state: 1nbqkb1r/1ppp1ppn/r7/4p3/1p5p/3PPB1P/PBP2PP1/RN2QKNR w k - 0 10 ; Best move: b2e5
The current state of the chess board is: Black knight at b8, black bishop at c8, black queen at d8, black king at e8, black bishop at f8 and black rook at h8. Black pawn at b7, black pawn at c7, black pawn at d7, black pawn at f7, black pawn at g7 and black knight at h7. Black rook at a6. Black pawn at e5. Black pawn at b4 and black pawn at h4. White pawn at d3, white pawn at e3, white bishop at f3 and white pawn at h3. White pawn at a2, white bishop at b2, white pawn at c2, white pawn at f2 and white pawn at g2. White rook at a1, white knight at b1, white queen at e1, white king at f1, white knight at g1 and white rook at h1. Black kingside is the only castle move available. Half move number is 0. Full move number is 10. White to move.