[Event "1.p Polish Congress"]
[Site ""]
[Date "2024"]
[Round ""]
[White "Rusinek=J"]
[Black ""]
[Result "1/2-1/2"]
[SetUp "1"]
[FEN "8/n5RK/R6P/5ppk/1p2b1pp/q2B4/p4P2/6N1 w - - 0 1"]
[PlyCount "15"]
[EventDate "2024"]

1. Rag6 $1 {Thematic try is the exchange of a rook for the queen.} (1. Rxa3 $2
bxa3 2. Nh3 $1 gxh3 {There is a black pawn on g5 and it proves stronger than
the queen, as it will be able to take "en passant" in the future:} 3. Be2+ g4
4. f4 gxf3 $19) (1. f4 $2 gxf3 2. Rxa3 bxa3 $19) 1... Qc1 2. Nh3 $1 gxh3 3.
Rxg5+ {The rook prefers to be exchanged for a pawn instead of a queen!} Qxg5 {
On g5 square the queen proves weaker than the pawn, as it cannot take
en-passant.} 4. Be2+ Bf3 $1 {Black changes the plan and sacrifices the bishop
to block the f2-pawn. This is akin to a 50 percent pickabish.} (4... Qg4 $2 5.
f4 Bf3 6. Bxf3 Qxf3 7. Rg5# {Black even loses.}) 5. Bxf3+ Qg4 {No more move 6.
f4??, but you can play} 6. Bd5 Qg5 (6... Nc8 7. Bf7+ Qg6+ 8. Bxg6+ $18) (6...
Qxg7+ 7. hxg7 a1=Q 8. g8=Q) 7. Bf3+ Qg4 8. Bd5 {positional draw.} 1/2-1/2

[Event "2.p Polish Congress"]
[Site ""]
[Date "2024"]
[Round ""]
[White "Piliczewski=B Rusinek=J"]
[Black ""]
[Result "1-0"]
[SetUp "1"]
[FEN "8/3P4/8/K7/2b5/8/2N3kp/8 w - - 0 1"]
[PlyCount "31"]
[EventDate "2024"]

1. Ne3+ $1 (1. d8=Q $2 h1=Q 2. Ne3+ Kf2 {draw.}) 1... Kg3 (1... Kg1 2. d8=Q
h1=Q 3. Qd1+ Kh2 4. Qd6+ $1 Kg1 5. Qg3+ {win.}) (1... Kf2 2. Ng4+ {win.}) 2.
d8=Q h1=Q 3. Qb8+ $1 {Why only here will be explained soon.} (3. Qd6+ $2 Kf2 4.
Ng4+ Ke2 5. Qe5+ Kf3 {draw}) (3. Qc7+ $2 Kf2 4. Ng4+ Ke2 5. Qxc4+ Kd2 6. Qd4+
Kc2 {draw.}) 3... Kf2 4. Ng4+ $1 {The king has six free squares at his
disposal but despite this Black loses.} Kg2 {If the queen had played 3. Qc7+?
or 3. Qd6+?, he would not have had access to the b2-square and would have
drawn 4.... Ke2. And now after 4... Ke2 wins 5. Qb2+ with a mate or gaining
the queen.} 5. Qb7+ Kg1 6. Qb1+ Bf1 (6... Kg2 7. Ne3+ (7. Qe4+ Kg1 8. Qe1+ Kg2
9. Ne3+ Kh2 10. Qh4+ Kg1 11. Qg3+) 7... Kh2 8. Qb8+ Kg1 9. Qg3+) 7. Qb6+ {
The queen takes the stairs to the g3, but soon she will have to take a pause
for bringing the knight to f5. These actions must be properly spaced (as in a
loan repayment plan!) .} Kg2 8. Qc6+ ({The manoeuvre} 8. Ne3+ $2 Kf2 9. Nf5+
Ke1 10. Qb4+ Kd1 11. Qb1+ Kd2 {is too early}) 8... Kg1 9. Qc5+ Kg2 10. Ne3+ $1
{Half the steps are taken and now it is the right time for the knight
manoeuvre (i.e. it is the end of the first instalment!).} (10. Qd5+ $6 Kg1 11.
Qd4+ Kg2 {and it is too late for the knight manoeuvre} 12. Ne3+ $2 Kf2 13. Nf5+
Ke1 14. Qb4+ Kd1 15. Qb1+ Kd2) 10... Kf2 (10... Kh2 11. Qe5+ Kg1 12. Qg3+ Bg2
13. Qe1+ Kh2 14. Ng4+ Kh3 15. Nf2+ {fork.}) (10... Kg3 11. Qe5+ Kf2 12. Nd1+
Kg1 13. Qe3+ Kg2 14. Qg5+ Kh2 15. Qf4+ Kg2 16. Ne3+ {win.}) 11. Nf5+ $1 Kg2 (
11... Ke1 12. Qc1+ Kf2 13. Qe3+ Kg2 14. Qg3#) 12. Qd5+ {Now the queen takes
the rest of the steps (second instalment).} Kg1 (12... Kh2 13. Qe5+ Kg1 14.
Qe3+ Kg2 15. Qg3#) 13. Qd4+ Kg2 14. Qe4+ {After 14. Qb2+ or 14. Qd2+ White
must return to the same position.} Kg1 (14... Kh2 15. Qf4+ (15. Qe5+) 15... Kg1
16. Qe3+ Kg2 17. Qg3#) 15. Qe3+ Kg2 16. Qg3# {A model mate in the middle of
the chessboard with two active selfblocks.} 1-0

[Event "3/4.p Polish Congress"]
[Site ""]
[Date "2024"]
[Round ""]
[White "Kwiatkowski=M"]
[Black ""]
[Result "1-0"]
[SetUp "1"]
[FEN "2b5/R1P4k/5rp1/p4p1p/1q2p2P/1B6/5PP1/3Q1K2 w - - 0 1"]
[PlyCount "27"]
[EventDate "2024"]

1. Ra8 (1. Qd7+ $2 Bxd7 2. c8=Q Rf7 $19) 1... Rf8 (1... Rd6 2. Bg8+ $18) 2.
Rxc8 $1 (2. Qd8 $2 Qxb3 3. Rxc8 Qb1+) 2... Qb5+ $1 3. Bc4 $1 Qxc4+ 4. Kg1 Rxc8
(4... Rf7 5. Rh8+ $18) 5. Qd7+ Kh6 6. g4 $1 (6. Qxc8 $2 Qc1+ 7. Kh2 Qf4+) 6...
Qc1+ 7. Kg2 $1 (7. Kh2 $2 Qf4+) 7... hxg4 8. Qxc8 Qc3 9. Qf8+ (9. Qd8 $2 g3 $1
10. fxg3 Qf3+) 9... Kh7 (9... Kh5 10. Qd8 $1 $18) 10. Qe7+ $1 (10. c8=Q $2 Qf3+
11. Kg1 Qd1+ 12. Kh2 g3+) (10. Qd6 $2 g3 $1 $11) 10... Kh6 11. Qd6 $1 a4 (11...
g3 12. Qxg3 $18) 12. Kh2 $3 (12. Qg3 $2 Qc6 $1 13. Qe5 Qa8 $1 14. Qc3 e3+ 15.
Kh2 (15. Kg1 e2 16. Qe3+ f4 $1 17. Qxe2 a3 $11) 15... exf2 16. c8=Q Qh1+ $1)
12... a3 (12... Qc2 13. Kg3 $18) (12... g3+ 13. Qxg3 $18) 13. Qf8+ Kh7 14. c8=Q
1-0

[Event "3/4.p Polish Congress"]
[Site ""]
[Date "2024"]
[Round ""]
[White "Rusinek=J"]
[Black ""]
[Result "1/2-1/2"]
[SetUp "1"]
[FEN "3n2K1/8/b7/6N1/1b4k1/5R2/8/8 w - - 0 1"]
[PlyCount "21"]
[EventDate "2024"]

{Two bishops win against the knight, and the bishop and knight 'only' draw.
White will be forced to exchange the rook for a light piece. Black will aim to
give away the knight for the rook and White will aim to get the bishop for his
rook. This is the motive behind the whole game.} 1. Rf6 {First thematic try:} (
1. Nf7 $2 Kxf3 2. Nxd8 {for the rook, White gained 'only' the knight.}) 1...
Bc4+ 2. Nf7 {The knight is pinned and the rook is chained to its defence.} Bc3
({main B} 2... Be7 3. Rf2 Kg3 4. Rf5 Be6 5. Rf1 Kg2 6. Rf4 Kg3 7. Rf1 Bc4 8.
Rf5 Kg4 9. Rf2 Bc5 10. Kg7 $1 (10. Rf6 $2 Bd4 11. Kf8 Bxf6 12. Nxd8 Bxd8 $19)
10... Bd4+ (10... Bxf2 11. Ne5+ $10 {fork with 12. Nxc4 - for the rook White
gains a bishop.}) 11. Kf8 $1 ({Third thematic try:} 11. Kg6 $2 Bd3+ 12. Kh6 Kg3
13. Nxd8 Kxf2 $19 {for the rook White has 'only' knight.}) 11... Bc5+ 12. Kg7
$1 ({Fourth thematic try:} 12. Ke8 $2 Bb5+ 13. Kxd8 Bxf2 $19 {for the rook
White gains a bishop.}) 12... Bxf2 13. Ne5+ {fork} Kf5 14. Nxc4 $10) 3. Rf2 $1
(3. Kf8 $4 Bxf6 4. Nxd8 Bxd8 $19) 3... Kg3 4. Rf5 Be6 {Black tries to push the
rook off the f-line.} 5. Rf1 Kg2 6. Rf4 ({Second thematic try:} 6. Kf8 $2 Kxf1
7. Nxd8 {For the rook, White gained 'only' the knight.}) 6... Be5 {Black seems
to have achieved the aim as all the squares on the f-line are attacked, but
follows} 7. Rf5 $1 Bc3 (7... Bxf5 8. Nxe5 {for the rook White has a bishop!}) (
7... Bb2 8. Rf4 Bc3 9. Kf8) 8. Rf4 Kg3 9. Rf1 Bc4 10. Rf5 Kg4 11. Rf2 {
positional draw.} 1/2-1/2

[Event ".hm Polish Congress"]
[Site ""]
[Date "2024"]
[Round ""]
[White "Babiarz=A"]
[Black ""]
[Result "1-0"]
[SetUp "1"]
[FEN "k1K2N2/p7/1P6/8/8/8/7N/8 b - - 0 1"]
[PlyCount "16"]
[EventDate "2024"]

{The position of the study, but without the white knights, is the well-known
task of Albert Heinrich Kniest - Deutsche Maerchenschachzeitung 09.1932, h#2.
The Author decided to use the item in a study realising the Troitzky theme,
for which two white knights are necessary. Retro. There must be Black on the
move.} 1... axb6 {According to the theory, in order to win after Troitzky the
pawn on line b must be blocked on b6 (then the win is always), and if the
black king is locked in the square a8-c8-c6-a6, it is enough block on b5 or b4.
It turns out that here this is impossible. But White can instead exploit the
position of the black king ‘in the cage’ and win without stopping the pawn.
} 2. Nd7 $1 ({Tries:} 2. Ne6 $2 Ka7 3. Kc7 Ka6 4. Nd4 Ka5 ({But not} 4... b5 $2
5. Nb3 b4 6. Kc6 {and the pawn is blocked on b5 or b4 and the king closed in
the key square}) 5. Kc6 b5 $1 {draw}) ({or} 2. Nf3 $2 Ka7 3. Nd4 Ka6 4. Kc7 Ka5
{draw.} ({But not} 4... b5 $2 5. Nb3)) {In both tries the pawn is blocked too
far away.} 2... Ka7 $1 3. Nb8 $1 b5 $1 4. Kc7 $1 (4. Nf3 $2 Kb6) 4... b4 5. Nf3
$1 b3 6. Nd4 $1 {White rightly gives up blocking the black pawn because it is
already too advanced.} b2 7. Nb5+ $1 {The interference b line.} (7. Ndc6+ $2
Ka8) 7... Ka8 8. Nd7 $1 {Switchback} b1=Q 9. Nb6# {A model mate.} 1-0

[Event "1.c Polish Congress"]
[Site ""]
[Date "2024"]
[Round ""]
[White "Wojcik=P"]
[Black ""]
[Result "1-0"]
[SetUp "1"]
[FEN "2b1k2b/1r4RB/4q3/1P1N4/8/8/K7/Q7 w - - 0 1"]
[PlyCount "13"]
[EventDate "2024"]

1. Re7+ $1 (1. Bg6+ $2 Qxg6 2. Rxg6 Bxa1 3. Rg8+ Kf7 4. Rxc8 Rxb5 {draw.}) 1...
Rxe7 2. Qxh8+ Kd7 (2... Kf7 3. Qg8#) 3. Bf5 $1 {An interesting position: the
bishop pins the queen, which pins the knight. The order of sacrifices cannot
be changed:} (3. Qxc8+ Kxc8 4. Bf5 Ra7+) 3... Qxf5 4. Qxc8+ $1 Kxc8 {and final
checkers motive:} 5. Nxe7+ Kc7 6. Nxf5 Kb6 7. Nd4 1-0

[Event "2.c Polish Congress"]
[Site ""]
[Date "2024"]
[Round ""]
[White "Silakowski=A"]
[Black ""]
[Result "1-0"]
[SetUp "1"]
[FEN "3k4/1p6/7B/bBp5/P6p/2Nb3q/8/4R1K1 w - - 0 1"]
[PlyCount "21"]
[EventDate "2024"]

1. Re8+ Kc7 2. Bf4+ Kb6 3. Nd5+ Ka7 4. Bb8+ Ka8 {A battery with the rook as a
rear piece and with the bishop as a front piece was created.} 5. Bd6+ Ka7 6.
Bxc5+ b6 (6... Bb6 7. Bxb6#) 7. Re7+ Kb8 8. Bd6+ Kc8 9. Rc7+ Kb8 (9... Kd8 10.
Be7#) {Now we have a new battery - the white pieces have swapped roles: the
bishop is a rear piece and the rook is a front piece.} 10. Rd7+ Kc8 11. Ne7# {
Three checkmates on different squares.} 1-0

