Chess Level 13: 2017

Friday, June 9, 2017

What is the strongest line for Black?

?, ?
Analysis of Troy8 (1988) vs. john2001plus (1854)


1
2
3
4
5
6
7
8

(black to move)

1.	c4	e6
2.	g3	d5
3.	Bg2	Nf6
4.	Nf3	c6
5.	Qc2	Bd6
6.	d4	O-O
7.	Nbd2	Nbd7
8.	e4	dxe4
9.	Nxe4	Nxe4
10.	Qxe4	Nf6
11.	Qh4	Qa5+
12.	Bd2	Bb4
13.	Qf4	Rd8
14.	O-O	Bxd2
15.	Nxd2	e5
16.	dxe5	Qxd2
17.	Qxd2	Rxd2
18.	exf6	Rxb2
19.	Rfe1	Be6
20.	fxg7	Bxc4
21.	Rab1	Rxb1
22.	Rxb1	Bxa2
23.	Rxb7	Bd5
24.	Bxd5	cxd5
25.	Rd7	a5
26.	Rxd5	a4
27.	Rd2	a3
28.	Ra2	Kxg7
29.	Kf1	Kf6
30.	Ke2	Ke5
31.	Kd3	Kd5
32.	f3	Kc5
33.	Kc3	f5
34.	g4	fxg4
35.	fxg4	Kd5
36.	Kd3	Ke5
37.	Ke3	Ra4
38.	h3	Re4+
39.	Kf3	Rf4+
40.	Kg3	Ra4
41.	Kf3	Kd4
42.	Kf4	Kc3+
43.	Kg5	Kb3
44.	Rf2	a2
45.	Rf1	a1=Q
46.	Rxa1	Rxa1
47.	h4	Kc4
48.	h5	Kd5
49.	Kh6	Rg1
50.	g5	Ke6
51.	Kxh7	Rxg5
52.	h6	Kf7
53.	Kh8	Rg8+
54.	Kh7	Rg6

Friday, June 2, 2017

What is the strongest line for White?

Live Chess, Chess.com
Analysis of john2001plus (1847) vs. pkengsoo (1508)


8
7
6
5
4
3
2
1

(white to move)

1.	Nf3	d5
2.	d4	c6
3.	c4	e6
4.	e3	dxc4
5.	Bxc4	Nd7
6.	Nc3	Nb6
7.	Bd3	Nf6
8.	O-O	Bd7
9.	e4	Be7
10.	e5	Nfd5
11.	Qe2	O-O
12.	Qe4	f5
13.	exf6 e.p.	Nxf6
14.	Qe2	Re8
15.	Re1	Bd6
16.	Ne4	Bc7
17.	Bg5	Nbd5
18.	Ne5	h6
19.	Nxf6+	Nxf6
20.	Bxf6	Qxf6
21.	Nxd7	Qxd4
22.	Rad1	Qh4
23.	g3	Qg5
24.	Qe4	Kf7
25.	h4	Qf5
26.	Qe2	Qa5
27.	Qg4	Kg8
28.	Qg6	Qd5
29.	Qh7+	Kf7
30.	Bg6+	Ke7
31.	Qxg7+	Kd6
32.	Rxd5+	cxd5
33.	Nf8	Rxf8
34.	Qe5+	Kc6
35.	Rc1+	Kb5
36.	Bd3+	Ka4
37.	Qd4+	Ka5
38.	Qc3+	Kb6
39.	Qxc7#

Monday, May 29, 2017

Black to play for a winning advantage.

ICC tourney 1264 (12 3), Internet Chess Club
Analysis of lagarto300 (1769) vs. yoshi (1604)


1
2
3
4
5
6
7
8

(black to move)

1.	d4	e6
2.	c4	Nf6
3.	Nf3	b6
4.	g3	Bb7
5.	Bg2	Bb4+
6.	Bd2	Bxd2+
7.	Qxd2	O-O
8.	Nc3	d6
9.	Qc2	c5
10.	O-O	Nc6
11.	Rfd1	Qe7
12.	a3	Rac8
13.	Rac1	cxd4
14.	Nxd4	Nxd4
15.	Rxd4	e5
16.	Rh4	Bxg2
17.	Kxg2	h6
18.	Kg1	Qe6
19.	Qd3	d5
20.	cxd5	Nxd5
21.	e4	Nxc3
22.	Rxc3	Rxc3
23.	Qxc3	Rc8
24.	Qd2	Qc4
25.	Rh5	f6
26.	Qd7	Qc6
27.	Qd3	Qc2
28.	Qd5+	Kh7
29.	Rf5	Rc5
30.	Qb7	Qxb2
31.	Kg2	Qc2
32.	Rf3	Rc4
33.	Re3	Rd4
34.	h4	Rd1
35.	h5	Qc4
36.	Kf3	Qe6
37.	Kg2	Qg4
38.	Qf7	b5

Saturday, May 20, 2017

White to play and win.

Live Chess, Chess.com
Analysis of john2001plus vs. Gustafsson21


8
7
6
5
4
3
2
1

(white to move)

1.	Nf3	d5
2.	d4	Nf6
3.	c4	c6
4.	Nc3	dxc4
5.	Ne5	Bf5
6.	f3	e6
7.	e4	Bg6
8.	Bxc4	Bb4
9.	O-O	Nbd7
10.	Qb3	Bxc3
11.	bxc3	O-O
12.	Bg5	Rb8
13.	Nxd7	Qxd7
14.	Bxf6	gxf6
15.	a4	f5
16.	d5	e5
17.	Rad1	c5
18.	d6	a6
19.	a5	f4
20.	Qb6	Rfd8
21.	Rd5	Kg7
22.	Rfd1	f6
23.	Rxc5	Rbc8
24.	Rc7	Rxc7
25.	Qxc7	Bf7
26.	Kf2	Bxc4
27.	Qxc4	Rc8
28.	Qb4	Rc6
29.	c4	Rc8
30.	c5	Qc6
31.	g3	fxg3+
32.	hxg3	Rf8
33.	g4	h6
34.	Rb1	Kg6
35.	Kg3	Rf7
36.	Qd2	Rh7
37.	Qd5	Qc8
38.	f4	Rg7
39.	fxe5	fxe5
40.	Qxe5	Kh7
41.	Qf5+	Qxf5
42.	exf5	h5
43.	Rb4	Rf7
44.	gxh5	Kh6
45.	Kf4	Kxh5
46.	Re4	Rg7
47.	Re7	Rg4+
48.	Ke5	Rg8
49.	d7	Rd8
50.	Rg7	Kh6
51.	f6

Friday, March 31, 2017

White to play and win.

Greenwood, Indiana Chess Club, ?
Analysis of McCorkle, Bob vs. Nelms, Al


8
7
6
5
4
3
2
1

(white to move)

1.	d4	Nf6
2.	Nf3	e6
3.	Bg5	Be7
4.	e3	b6
5.	Bd3	Bb7
6.	Nbd2	d5
7.	c3	Nbd7
8.	O-O	Ne4
9.	Bxe7	Qxe7
10.	Qc2	Ndf6
11.	c4	c6
12.	Rac1	O-O
13.	Ne5	Qb4
14.	Nxe4	Nxe4
15.	Bxe4	dxe4
16.	b3	f6
17.	Ng4	h5
18.	Qxe4	hxg4
19.	Qxe6+	Rf7
20.	Qxg4	Qd6
21.	Qf5	g6
22.	c5	Qc7
23.	Qxg6+	Rg7
24.	Qxf6	Rf8
25.	Qe6+	Rff7
26.	Qe8+	Kh7
27.	Qe5	Qd7
28.	f4	Re7
29.	Qh5+	Kg8
30.	Rf3	Bc8
31.	Re1	Qd8
32.	Rg3	b5
33.	Rxg7+	Rxg7
34.	h3	Be6
35.	Re2	Qd7
36.	g4	Bf5
37.	Kh2	Be4
38.	Rf2	a5
39.	f5	Bd5
40.	f6	Rf7
41.	Qg5+	Kf8
42.	Qh6+	Ke8
43.	Qf4	Qc7
44.	e4	Be6
45.	g5	Qxf4+
46.	Rxf4	Rh7
47.	g6	Rxh3+
48.	Kg2	Rh8
49.	f7+	Kf8
50.	Rf6	Bg4
51.	Kg3	Bh5
52.	Kf4	Kg7
53.	Kg5	Bd1
54.	Rxc6	Rh5+
55.	Kf4	Rh4+
56.	Ke5	Rh5+
57.	Ke6	Rh8
58.	Ke7	Ra8
59.	Ra6	Rb8
60.	Rb6	Ra8
61.	c6	Rc8
62.	d5	Bf3
63.	d6	Bxe4
64.	d7

Sunday, February 12, 2017

What is the best plan for White?

Live Chess, Chess.com
Analysis of john2001plus (1769) vs. joanapita (1738)


8
7
6
5
4
3
2
1

(white to move)

1.	Nf3	c6
2.	e4	d5
3.	Nc3	dxe4
4.	Nxe4	Bf5
5.	Ng3	Bg6
6.	h4	h6
7.	Ne5	Qd6
8.	d4	Nd7
9.	Nxg6	Qxg6
10.	Bd3	Qd6
11.	Nf5	Qe6+
12.	Ne3	Qd6
13.	O-O	e6
14.	Re1	Be7
15.	Nc4	Qc7
16.	g3	Ngf6
17.	Bf4	Qd8
18.	Nd6+	Bxd6
19.	Bxd6	Nb6
20.	Bc5	Qd7
21.	a4	Nc8
22.	a5	Ne7
23.	g4	Nfd5
24.	Qf3	Qc7
25.	Re5	Nf6
26.	Qg3	Qb8
27.	Bb4	Nd7
28.	Re2	Qxg3+
29.	fxg3

Click here for 26... O-O
Click here for 26... Nd7
Click here for 26... O-O

Saturday, January 7, 2017

Black to play and win.

Live Chess, Chess.com
Analysis of ThadStevens (1631) vs. Putz57 (1435)


1
2
3
4
5
6
7
8

-3

(black to move)

1.	d4	Nf6
2.	c4	g6
3.	Nc3	c6
4.	e4	Bg7
5.	Nf3	d6
6.	Be2	O-O
7.	O-O	Nbd7
8.	Re1	Qc7
9.	Bf1	Re8
10.	Qc2	e5
11.	d5	Nc5
12.	b4	Ncd7
13.	Ba3	a6
14.	Rac1	Nf8
15.	Bb2	Bg4
16.	Nd2	Bh6
17.	f3	Bd7
18.	Nd1	Qb6+
19.	Kh1	cxd5
20.	cxd5	Rac8
21.	Nc3	Nh5
22.	a3	Nf4
23.	Qb3	Bb5
24.	Nxb5	axb5
25.	g3	Nh5
26.	Qd3	Bxd2
27.	Qxd2	Kg7
28.	Qe2	Nf6
29.	Bh3	Rxc1
30.	Rxc1	h6
31.	Bf1	Nf8h7
32.	Rc2	Ng5
33.	h4	Ngh7
34.	Bc1	Nh5
35.	Kh2	Qd8
36.	Qg2	Qb6
37.	Rc3	Qd4
38.	Qd2	Qb6
39.	Qe3	Qd8
40.	Bxb5	Re7
41.	Qxh6+	Kg8
42.	Bg5	Nh5f6
43.	Bxf6	Nxf6
44.	Qg5	Kg7
45.	g4	Nh7
46.	Qc1	Qh8
47.	Rc8	Nf8
48.	Qe1	Qh6
49.	Qg3	Qd2+
50.	Kh3	Qb2
51.	h5	g5
52.	h6+	Kxh6
53.	Rxf8	Qxa3
54.	Rh8+	Kg7
55.	Rh5	Kg6
56.	Kg2	Rc7
57.	Be2	Rc2
58.	Kf2	Qb2
59.	Qh3	Rxe2+
60.	Kf1	Rf2+
61.	Kg1	Rc2
62.	Rh6+	Kg7
63.	Rh7+	Kf8
64.	Qh6+	Ke8
65.	Rh8+	Kd7
66.	Rd8+	Kxd8
67.	Qxd6+	Ke8
68.	Qb8+	Ke7
69.	d6+	Kd7
70.	Qxb7+	Kxd6
71.	Qb6+	Ke7
72.	Qb7+	Kf8
73.	Qa8+	Kg7

Options:
	- allow legal moves only;
	- use short algebraic notation;
movement/animation speed: (slow) (fast)
	- show legal moves;

Pawn promotion:
	- Queen
	- Rook
	- Bishop
	- Knight

Options:
	- allow legal moves only;
	- use short algebraic notation;
movement/animation speed: (slow) (fast)
	- show legal moves;

Pawn promotion:
	- Queen
	- Rook
	- Bishop
	- Knight

Options:
	- allow legal moves only;
	- use short algebraic notation;
movement/animation speed: (slow) (fast)
	- show legal moves;