rn2k2r/pb1pn3/Rp3p1b/6p1/1P2PP2/N1P3Pp/Q2PN1BP/2B1K2R w K - 0 18
FEN state: rn2k2r/pb1pn3/Rp3p1b/6p1/1P2PP2/N1P3Pp/Q2PN1BP/2B1K2R w K - 0 18 ; Best move: g2h3
The current state of the chess board is: Black rook at a8, black knight at b8, black king at e8 and black rook at h8. Black pawn at a7, black bishop at b7, black pawn at d7 and black knight at e7. White rook at a6, black pawn at b6, black pawn at f6 and black bishop at h6. Black pawn at g5. White pawn at b4, white pawn at e4 and white pawn at f4. White knight at a3, white pawn at c3, white pawn at g3 and black pawn at h3. White queen at a2, white pawn at d2, white knight at e2, white bishop at g2 and white pawn at h2. White bishop at c1, white king at e1 and white rook at h1. White kingside is the only castle move available. Half move number is 0. Full move number is 18. White to move.