Sort:  
  1. Nb5 Nxb5
  2. Rb7+ Kc8
  3. Kb6 Bd4+ And black wins.

Why not just 1. Na8 as you suggested first?

Coin Marketplace

STEEM 0.04
TRX 0.32
JST 0.082
BTC 59780.31
ETH 1576.77
USDT 1.00
SBD 0.42