White to play and checkmate in two moves

1.Nh4!
1...Nd1 2.Rxe4#
1...Nh1 2.Rxe4#
1...Nh3 2.Rxe4#
1...Ng4 2.Rxe4#
1...Nd3 2.Rxe4#
1...Re1 2.Qg7#
1...Re2 2.Qg7#
1...Re3 2.Qg7#
1...Rxd4 2.Ng6#
1...Rxf4 2.Rd5#
1...Kxd4 2.Nf3#
1...Kxf4 2.Qxc7#

Date added: 1/8/2021

1.Bd8! ~ 2.Bb6#
1...Kxe3 2.Nc2#
1...Kc5 2.Na6#
1...Qxe3+ 2.Nd3#

Date added: 1/8/2021

1.Qd8!
1...Ka6 2.Nc5#
1...Kxc6 2.Na5#

compare to #820

Date added: 1/8/2021

1.Na1! zz
1...Kc3 2.Qd4#
1...Kb5 2.Qb4#

compare to #819

Date added: 1/8/2021

1.Nb1! (2.Nc3#)
1...Bb2 2.a4#
1...Bb4 2.Nd4#
1...Qxc2 2.Nxa3#
1...Qxb1/Qb2 2.Qc4#
1...Qd2/Qe3 2.Nxa3#/Qc4#

Date added: 1/8/2021

1.Ne5! (2.Qd7#)
1...Qh7/Qg7/Qf8 2.Qd1#
1...c2 2.Qa1#
1...fxe5 2.Rd8#
1...Nf4 2.Nf3#
1...Rf4+/Rf3+/Rxf2+/Rg5+ 2.Ncd7#
1...Rxe5+ 2.Ne6#
1...Ne4 2.Nb3#

Date added: 1/8/2021

1.Bg2!
1...Rxb4 (R~4) 2.Ne5#
1...Rd4
2.Ne5#
2.Nxd4#
1...Rxe7 (R~e) 2.Nd4#
1...Re5
2.Nxe5#
2.Nd4#
1...Rd1 (R~d) 2.Ne5#
1...Rd4
2.Ne5#
2.Nxd4#
1...Rd6
2.Qxd6#
2.Ne5#
1...Rh5 (R~5)
2.Qd6#
2.Nd4#
1...Re5
2.Qd6#
2.Nxe5#
2.Nd4#
1...Ba6 2.Qb6#
1...Bc8
2.Qb6#
2.Qxc8#
1...Ba8
2.Qb6#
2.Qc8#
1...Ne6 (Nf7) 2.Qxb7#

Date added: 1/8/2021

1.Ra6!
1...Ke5 2.Nd3#
1...Ng4 (N~) 2.Bg3#
1...Qa7 2.Qd6#
1...Qe5 2.Ne2#
1...Qd6+ 2.Qxd6#
1...Qc7 2.Qxc7#
1...Qb7 2.Qd6#
1...Qa8
2.Qc7#
2.Qd6#
1...Bxa6 (Bb7) 2.Qxb8#
1...Be6 (Bd7) 2.Qxb8#

Date added: 2/8/2021

1.f8=N+! Kf6 2.Qg7#

compare to #826 & #827 & #828

Date added: 2/8/2021

1.f8=B! Kf6 2.Qf5

compare to #825 & #827 & #828

Date added: 2/8/2021

1.f8=R! Kd6 2.Rf

compare to #825 & #826 & #828

Date added: 2/8/2021

1.f8=Q! Kd7 2.Qcc8#

compare to #825 & #826 & #828

Date added: 2/8/2021