2rq1k1r/p1pnp2p/n2p2p1/4Ppb1/2P2P1R/3P4/PP3KP1/RNB2BN1 w - - 4 21
FEN state: 2rq1k1r/p1pnp2p/n2p2p1/4Ppb1/2P2P1R/3P4/PP3KP1/RNB2BN1 w - - 4 21 ; Best move: f4g5
The current state of the chess board is: Black rook at c8, black queen at d8, black king at f8 and black rook at h8. Black pawn at a7, black pawn at c7, black knight at d7, black pawn at e7 and black pawn at h7. Black knight at a6, black pawn at d6 and black pawn at g6. White pawn at e5, black pawn at f5 and black bishop at g5. White pawn at c4, white pawn at f4 and white rook at h4. White pawn at d3. White pawn at a2, white pawn at b2, white king at f2 and white pawn at g2. White rook at a1, white knight at b1, white bishop at c1, white bishop at f1 and white knight at g1. Both players have exhausted their castles. Half move number is 4. Full move number is 21. White to move.