rnb1qbr1/5ppn/p1pN3B/3Pk3/1PP5/p7/2R1P1PP/3QKBNR b K - 4 20
FEN state: rnb1qbr1/5ppn/p1pN3B/3Pk3/1PP5/p7/2R1P1PP/3QKBNR b K - 4 20 ; Best move: e5d6
The current state of the chess board is: Black rook at a8, black knight at b8, black bishop at c8, black queen at e8, black bishop at f8 and black rook at g8. Black pawn at f7, black pawn at g7 and black knight at h7. Black pawn at a6, black pawn at c6, white knight at d6 and white bishop at h6. White pawn at d5 and black king at e5. White pawn at b4 and white pawn at c4. Black pawn at a3. White rook at c2, white pawn at e2, white pawn at g2 and white pawn at h2. White queen at d1, white king at e1, white bishop at f1, white knight at g1 and white rook at h1. White kingside is the only castle move available. Half move number is 4. Full move number is 20. Black to move.