rnb3nr/1p6/p1ppkpp1/2P4p/P1P1B3/R2QP1PN/1B1P2PP/1N2K2R w - - 4 21
FEN state: rnb3nr/1p6/p1ppkpp1/2P4p/P1P1B3/R2QP1PN/1B1P2PP/1N2K2R w - - 4 21 ; Best move: h3g5
The current state of the chess board is: Black rook at a8, black knight at b8, black bishop at c8, black knight at g8 and black rook at h8. Black pawn at b7. Black pawn at a6, black pawn at c6, black pawn at d6, black king at e6, black pawn at f6 and black pawn at g6. White pawn at c5 and black pawn at h5. White pawn at a4, white pawn at c4 and white bishop at e4. White rook at a3, white queen at d3, white pawn at e3, white pawn at g3 and white knight at h3. White bishop at b2, white pawn at d2, white pawn at g2 and white pawn at h2. White knight at b1, white king at e1 and white rook at h1. Both players have exhausted their castles. Half move number is 4. Full move number is 21. White to move.