Castling allowed

White mates in 4.

White mates in 2.

Puzzle #1 is brilliant! #2 is wrong because the black king escapes to g2. #3 is also brilliant but the solution given is wrong.

Here is a brilliant version of #2 (probably how it was originally composed):

Thankyou Arisktotle for that correction; there is indeed a knight on f4.

You don't need it. The queen/rook covers it.

After the 2nd move, yes. After the first move, no. So you need it.

Rh6 Kg2#

The truth hurts

I really like your puzzles INwinl

Just see my correction in comment #4 is wrong because 1. Qa2 works. Here is the repair - note that the pawns on b2 and b3 are technically better than those on c2 and c3 in the original!

In the third puzzle 1 Qd4 is given.  After 1. Qd4 Bb1 (preventing 0-0-0) there are five potential white checks:

a) Bxd5+ (answered by Rxd5)

b) Qxd5+ (answered by Rxd5)

c) Qe4+ (answered by Qxe4)

d) Rg1+ (answered by hg)

e) Nt3+ (answered by Kg2)

If the h7 B is replaced by a P in the initial diagram then there is nothing to prevent 2. 0-0-0# or 2 Kd2#

No need to replace the bishop. 1. Qd4 is simply not the solution but a "try".

Btw, here's a version with the same content but saving 1 full piece which is worth $1,000,000 in compositions. Checkmate in 2 moves.

Thanks,

It would have been nice if the original puzzle did not reject the correct move while giving Qd4 the Solved status.

Actually No3 revised; i accidently yup after qd4 forgot bb1 nice spot/

I hope you don't revise cars. A few nuts and bolts missing on the king side!