rnq1k1n1/p3p1br/8/1p1p2pp/5P2/NP5P/2PKP1P1/R1B2BNR w q - 0 21
FEN state: rnq1k1n1/p3p1br/8/1p1p2pp/5P2/NP5P/2PKP1P1/R1B2BNR w q - 0 21 ; Best move: e2e4
The current state of the chess board is: Black rook at a8, black knight at b8, black queen at c8, black king at e8 and black knight at g8. Black pawn at a7, black pawn at e7, black bishop at g7 and black rook at h7. Black pawn at b5, black pawn at d5, black pawn at g5 and black pawn at h5. White pawn at f4. White knight at a3, white pawn at b3 and white pawn at h3. White pawn at c2, white king at d2, white pawn at e2 and white pawn at g2. White rook at a1, white bishop at c1, white bishop at f1, white knight at g1 and white rook at h1. Black queenside is the only castle move available. Half move number is 0. Full move number is 21. White to move.