1nbqk2r/2ppppb1/rp3n1p/p5p1/NP4P1/4KP2/P1PPP2P/R1BQ1BNR w k - 0 8
FEN state: 1nbqk2r/2ppppb1/rp3n1p/p5p1/NP4P1/4KP2/P1PPP2P/R1BQ1BNR w k - 0 8 ; Best move: b4b5
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 c7, black pawn at d7, black pawn at e7, black pawn at f7 and black bishop at g7. Black rook at a6, black pawn at b6, black knight at f6 and black pawn at h6. Black pawn at a5 and black pawn at g5. White knight at a4, white pawn at b4 and white pawn at g4. White king at e3 and white pawn at f3. White pawn at a2, white pawn at c2, white pawn at d2, white pawn at e2 and white pawn at h2. White rook at a1, white bishop at c1, white queen 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 0. Full move number is 8. White to move.