rnb1kbr1/1p1pn3/1P3pp1/p1p1p3/P5N1/2P1qP2/2RPB2P/1NBQKR2 b q - 0 20
FEN state: rnb1kbr1/1p1pn3/1P3pp1/p1p1p3/P5N1/2P1qP2/2RPB2P/1NBQKR2 b q - 0 20 ; Best move: e3g5
The current state of the chess board is: Black rook at a8, black knight at b8, black bishop at c8, black king at e8, black bishop at f8 and black rook at g8. Black pawn at b7, black pawn at d7 and black knight at e7. White pawn at b6, black pawn at f6 and black pawn at g6. Black pawn at a5, black pawn at c5 and black pawn at e5. White pawn at a4 and white knight at g4. White pawn at c3, black queen at e3 and white pawn at f3. White rook at c2, white pawn at d2, white bishop at e2 and white pawn at h2. White knight at b1, white bishop at c1, white queen at d1, white king at e1 and white rook at f1. Black queenside is the only castle move available. Half move number is 0. Full move number is 20. Black to move.