rnq3nb/p1pkp3/P2p1p1r/3NP2p/1pP1QPpP/R2P4/1P4bR/2B1K1N1 b - - 4 21
FEN state: rnq3nb/p1pkp3/P2p1p1r/3NP2p/1pP1QPpP/R2P4/1P4bR/2B1K1N1 b - - 4 21 ; Best move: g2e4
The current state of the chess board is: Black rook at a8, black knight at b8, black queen at c8, black knight at g8 and black bishop at h8. Black pawn at a7, black pawn at c7, black king at d7 and black pawn at e7. White pawn at a6, black pawn at d6, black pawn at f6 and black rook at h6. White knight at d5, white pawn at e5 and black pawn at h5. Black pawn at b4, white pawn at c4, white queen at e4, white pawn at f4, black pawn at g4 and white pawn at h4. White rook at a3 and white pawn at d3. White pawn at b2, black bishop at g2 and white rook at h2. White bishop at c1, white king at e1 and white knight at g1. Both players have exhausted their castles. Half move number is 4. Full move number is 21. Black to move.