rn2kb1r/1p2p2p/5p1n/3p2p1/P1p5/2PPP1PP/4K1b1/RQB2BNR w k - 0 21
FEN state: rn2kb1r/1p2p2p/5p1n/3p2p1/P1p5/2PPP1PP/4K1b1/RQB2BNR w k - 0 21 ; Best move: f1g2
The current state of the chess board is: Black rook at a8, black knight at b8, black king at e8, black bishop at f8 and black rook at h8. Black pawn at b7, black pawn at e7 and black pawn at h7. Black pawn at f6 and black knight at h6. Black pawn at d5 and black pawn at g5. White pawn at a4 and black pawn at c4. White pawn at c3, white pawn at d3, white pawn at e3, white pawn at g3 and white pawn at h3. White king at e2 and black bishop at g2. White rook at a1, white queen at b1, white bishop at c1, 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 21. White to move.