1n1qkbnr/r1p5/8/pP1pPpp1/RP2PN1p/2P2P1P/4K3/1NB2BRb b - - 0 21
FEN state: 1n1qkbnr/r1p5/8/pP1pPpp1/RP2PN1p/2P2P1P/4K3/1NB2BRb b - - 0 21 ; Best move: g5f4
The current state of the chess board is: Black knight at b8, black queen at d8, black king at e8, black bishop at f8, black knight at g8 and black rook at h8. Black rook at a7 and black pawn at c7. Black pawn at a5, white pawn at b5, black pawn at d5, white pawn at e5, black pawn at f5 and black pawn at g5. White rook at a4, white pawn at b4, white pawn at e4, white knight at f4 and black pawn at h4. White pawn at c3, white pawn at f3 and white pawn at h3. White king at e2. White knight at b1, white bishop at c1, white bishop at f1, white rook at g1 and black bishop at h1. Both players have exhausted their castles. Half move number is 0. Full move number is 21. Black to move.