rnbqkr2/3p4/1p2p1p1/p3Pp1p/P1Bp1P1b/7P/NPP3PR/1RB1QKN1 w q - 4 18
FEN state: rnbqkr2/3p4/1p2p1p1/p3Pp1p/P1Bp1P1b/7P/NPP3PR/1RB1QKN1 w q - 4 18 ; Best move: g2g3
The current state of the chess board is: Black rook at a8, black knight at b8, black bishop at c8, black queen at d8, black king at e8 and black rook at f8. Black pawn at d7. Black pawn at b6, black pawn at e6 and black pawn at g6. Black pawn at a5, white pawn at e5, black pawn at f5 and black pawn at h5. White pawn at a4, white bishop at c4, black pawn at d4, white pawn at f4 and black bishop at h4. White pawn at h3. White knight at a2, white pawn at b2, white pawn at c2, white pawn at g2 and white rook at h2. White rook at b1, white bishop at c1, white queen at e1, white king at f1 and white knight at g1. Black queenside is the only castle move available. Half move number is 4. Full move number is 18. White to move.