r1bq1bk1/1p6/p3p1p1/2pp2Np/PP3pn1/Q1P5/3RPPPP/N3KB1R w K - 2 20
FEN state: r1bq1bk1/1p6/p3p1p1/2pp2Np/PP3pn1/Q1P5/3RPPPP/N3KB1R w K - 2 20 ; Best move: h2h4
The current state of the chess board is: Black rook at a8, black bishop at c8, black queen at d8, black bishop at f8 and black king at g8. Black pawn at b7. Black pawn at a6, black pawn at e6 and black pawn at g6. Black pawn at c5, black pawn at d5, white knight at g5 and black pawn at h5. White pawn at a4, white pawn at b4, black pawn at f4 and black knight at g4. White queen at a3 and white pawn at c3. White rook at d2, white pawn at e2, white pawn at f2, white pawn at g2 and white pawn at h2. White knight at a1, white king at e1, white bishop at f1 and white rook at h1. White kingside is the only castle move available. Half move number is 2. Full move number is 20. White to move.