r1bq1b2/3p2rp/1pp1pk1n/p1n3p1/3P1pPP/BP2PQ2/P3KP1R/RN3BN1 w - - 2 20
FEN state: r1bq1b2/3p2rp/1pp1pk1n/p1n3p1/3P1pPP/BP2PQ2/P3KP1R/RN3BN1 w - - 2 20 ; Best move: h4g5
The current state of the chess board is: Black rook at a8, black bishop at c8, black queen at d8 and black bishop at f8. Black pawn at d7, black rook at g7 and black pawn at h7. Black pawn at b6, black pawn at c6, black pawn at e6, black king at f6 and black knight at h6. Black pawn at a5, black knight at c5 and black pawn at g5. White pawn at d4, black pawn at f4, white pawn at g4 and white pawn at h4. White bishop at a3, white pawn at b3, white pawn at e3 and white queen at f3. White pawn at a2, white king at e2, white pawn at f2 and white rook at h2. White rook at a1, white knight at b1, white bishop at f1 and white knight at g1. Both players have exhausted their castles. Half move number is 2. Full move number is 20. White to move.