r2q1bnr/p1pb3p/1pn3k1/1P1pp3/N2P4/3K2PN/PBP1PPpP/3R2R1 w - - 2 21
FEN state: r2q1bnr/p1pb3p/1pn3k1/1P1pp3/N2P4/3K2PN/PBP1PPpP/3R2R1 w - - 2 21 ; Best move: g3g4
The current state of the chess board is: Black rook at a8, black queen at d8, black bishop at f8, black knight at g8 and black rook at h8. Black pawn at a7, black pawn at c7, black bishop at d7 and black pawn at h7. Black pawn at b6, black knight at c6 and black king at g6. White pawn at b5, black pawn at d5 and black pawn at e5. White knight at a4 and white pawn at d4. White king at d3, white pawn at g3 and white knight at h3. White pawn at a2, white bishop at b2, white pawn at c2, white pawn at e2, white pawn at f2, black pawn at g2 and white pawn at h2. White rook at d1 and white rook at g1. Both players have exhausted their castles. Half move number is 2. Full move number is 21. White to move.