rn1k1br1/7p/1p3np1/pPp1ppq1/3pPNQP/RP4P1/2PP1PB1/1NBK3R w - a6 0 20
FEN state: rn1k1br1/7p/1p3np1/pPp1ppq1/3pPNQP/RP4P1/2PP1PB1/1NBK3R w - a6 0 20 ; Best move: g4g5
The current state of the chess board is: Black rook at a8, black knight at b8, black king at d8, black bishop at f8 and black rook at g8. Black pawn at h7. Black pawn at b6, black knight at f6 and black pawn at g6. Black pawn at a5, white pawn at b5, black pawn at c5, black pawn at e5, black pawn at f5 and black queen at g5. Black pawn at d4, white pawn at e4, white knight at f4, white queen at g4 and white pawn at h4. White rook at a3, white pawn at b3 and white pawn at g3. White pawn at c2, white pawn at d2, white pawn at f2 and white bishop at g2. White knight at b1, white bishop at c1, white king at d1 and white rook at h1. Both players have exhausted their castles. Half move number is 0. Full move number is 20. En Passant Target Square: a6. White to move.