rnb1k1nr/2pp3p/p1q3p1/1p2pp2/NbPPP1P1/2N5/PP2BP1P/1RB1K2R b Kkq - 4 13
FEN state: rnb1k1nr/2pp3p/p1q3p1/1p2pp2/NbPPP1P1/2N5/PP2BP1P/1RB1K2R b Kkq - 4 13 ; Best move: e5d4
The current state of the chess board is: Black rook at a8, black knight at b8, black bishop at c8, black king at e8, black knight at g8 and black rook at h8. Black pawn at c7, black pawn at d7 and black pawn at h7. Black pawn at a6, black queen at c6 and black pawn at g6. Black pawn at b5, black pawn at e5 and black pawn at f5. White knight at a4, black bishop at b4, white pawn at c4, white pawn at d4, white pawn at e4 and white pawn at g4. White knight at c3. White pawn at a2, white pawn at b2, white bishop at e2, white pawn at f2 and white pawn at h2. White rook at b1, white bishop at c1, white king at e1 and white rook at h1. White kingside, black kingside and black queenside castles are available. Half move number is 4. Full move number is 13. Black to move.