r1bq2nr/2pp1k1p/1pn2p1b/p1P1PPp1/1P6/4BN2/P1QKP1PP/4RBNR b - - 2 15
FEN state: r1bq2nr/2pp1k1p/1pn2p1b/p1P1PPp1/1P6/4BN2/P1QKP1PP/4RBNR b - - 2 15 ; Best move: g5g4
The current state of the chess board is: Black rook at a8, black bishop at c8, black queen at d8, black knight at g8 and black rook at h8. Black pawn at c7, black pawn at d7, black king at f7 and black pawn at h7. Black pawn at b6, black knight at c6, black pawn at f6 and black bishop at h6. Black pawn at a5, white pawn at c5, white pawn at e5, white pawn at f5 and black pawn at g5. White pawn at b4. White bishop at e3 and white knight at f3. White pawn at a2, white queen at c2, white king at d2, white pawn at e2, white pawn at g2 and white pawn at h2. White rook at e1, white bishop at f1, white knight at g1 and white rook at h1. Both players have exhausted their castles. Half move number is 2. Full move number is 15. Black to move.