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Solutions to Chad and Shakti Problems

Problem 1: White checkmates in 6 moves.

Chad Problem 1 Solution

1. D7-H7
threatening 2. H7xH9 ++
    ... I8-H8
on H9xH7 follows 2. G3-G9 and then on ... H7-H9 3. G9xH9 Q++ and on ... I9-I10
3. E5-E9 checkmating next move on H9 or I9 as the case may be. But Black can postpone the inevitable.
2. H7xH8 Q+; I9-J9
on I9-I10 follows 3. G3-G10 and then on ... H9-H10 4. H8-I8 ++ and on ... I10-J9 4. G10xJ10 Q++
3. G3-G9
threatening G9xH9 Q++
    ... J10-I10
4. G9xH9 Q+; I10-I9
5. H8-I8 +; J9-J10
6. I8-K10 ++

Problem 2: White checkmates in 6 moves.

Chad Problem 2 Solution

​1. C8-H8 Q+; I9xH8
2. C7-H7 +; H8-I9
or H8-I10, but not H8-J9
because of 3. H7xH9 Q+
3. G4-G10
threatening G10xH10 Q+
    ... H10xG10

4. H7xH9 Q+; I9-J10
5. H12-H10 Q+; I8-I10
6.H9-I9 ++ ​

Problem 3: White checkmates in 7 moves.

Chad Problem 3 Solution

1. H3-H7; H8xH7
2. C8-H8 Q+
Not J3-J10 because after I9xJ10, 3. C8-H8 Q+ the King can move to J9, attacking the Queen in relative safety.
     ... I9xH8
3. J3-J10 Q+
on ... I8-I9 or I10-I9 comes 4. D6-D8 ++
     ... H9-I9
4. J10-J6 +
it's crucial to bring the Queen to a safe spot while giving check and keeping control of the three rightmost castle squares.
     ... I5-I7
or I8-I7 or H7-I7.
5. D6-D8 +; H8-H9
6. E5-E9 +; H9-H10
7.D8-D10 ++

Problem 1: White checkmates in 3 moves.

Shakti Problem 1 Solution

1. B4-D6 +; C7-B6
Not C7xD6 because of 2. E4-C6 ++
2. D6-C6 +; B6-A5
3. E4-B4 ++ ​

Problem 2: White checkmates in 2 moves.

Shakti Problem 2 Solution

Note that Black threatens:
1 ... C1-D1 +
2. E2-F1; B3-F3 ++
White moves:
1. F6-B2 +; A3-A4
Or A3-B4
2. G5-B5 ++ ​

Problem 3: White checkmates in 3 moves.

Shakti Problem 3

Note that Black threatens:
1 ... E4-E1 +
2. F2-G2; E1-G3 +
3. G2-F1; C3-E1 ++
White moves:
1. F4-F7 +; B3-A2
On B3-A3 follows B6-B3 ++
2. B6-B3 +; A2-B1
3. B3-B2 ++ 

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