1/3/2009These are still Easy. Solutions at the end:
1) White to play
2) Black to play
3) White to play
4) Black to play
5) White to play
6) Black to play
7) White to play
8) Black to play
9) White to play
10) Black to play
SOLUTIONS:
1) Palmer-Galloway, Chicago 12/26/91: 1. Rc6+ 1-0 (2. Rxc3).
2) Rosenberg-Palmer, Ann Arbor 8/20/88: 1 ... Qd4 wins material (2. Be3 Qxb2); the game went 2. Qf3 Qxe5 and Black won (0-1). A Ruy Lopez trap.
3) Palmer-Abbasi, Ann Arbor 8/20/88: 1. Qe6+ Kh8 2. Qxc6 and White won (1-0).
4) Stefanski-Palmer, Flushing 10/27/83: 1 ... Bc4 wins the exchange or a piece (2. Rxd8 Rxd8 3. Rb1 Bxb5 4. Rxb5? Rd1#).
5) Palmer-Garrison, Cadillac 9/6/99: 1. Rf3+ Kh4 2. Rf4+ 1-0 (3. Rxd4).
6) Sundeen-Palmer, Southfield 5/29/83: 1 ... Qc5+ 2. Kg2 Qxe5 and Black won (0-1).
7) Palmer-Yurschak, Saint Louis 7/24/88: 1. Bxc7! Kxc7 2. Re8 Bd5 3. Rxf8 and White won (1-0).
8) Baze-Palmer, Ann Arbor 12/8/92: 1 ... Bc5+ 2. Kh1 Bxb6 and Black won (0-1).
9) Palmer-McCarter, Ann Arbor 8/20/88: 1. Nd7+ Ke7 (1 ... Nxd7 2. Rxd7 Bb6 3. c5!) 2. Nxf6 gxf6 3. Rd7+ Kf8 4. Bh6+ Ke8 5. Rxc7+ and White won (1-0).
10) Cooper-Palmer, Saginaw 5/22/82: 1 ... Qh3+ 2. Ke2 Re7+ 3. Kd2 Qe3+ 0-1 (4 ... Qxf2). 12/28/2008
Note these are all White to play. Solutions at the end:
1) White to play
2) White to play
3) White to play
4) White to play
5) White to play
6) White to play
7) White to play
8) White to play
9) White to play
10) White to play
SOLUTIONS:
1) Palmer-Surlow, US Amateur Playoff 6/13/98: 1. g4+ 1-0 (1 ... Kxg4 2. Qh3#).
2) Palmer-Vukotic, Ann Arbor 6/25/91: 1. Qh8+ 1-0 (1 ... Kf7 2. Qf8#).
3) Palmer-Present, Providence 12/28/86: 1. Nb6+ 1-0 (1 ... Kb8 2. Rb7#).
4) Palmer-Wilson, Detroit 9/3/90: 1. Qg8 Kh1 2. Qg3 1-0 (2 ... h2 3. Qg2#).
5) Palmer-Lindsay, Ann Arbor 7/90: 1. Nf6+! 1-0 (1 ... gxf6 2. Qg3+ & 3. Qg7#).
6) Palmer-Sanyika, Kent 2/27/93: 1. Rxh6+! gxh6 (1 ... Kxh6 2. Qg6#) 2. Qxg8# 1-0.
7) Palmer-Smalz, Toledo 9/14/96: 1. Bxh7+ Kh8 2. Bg6+ Kg8 3. Qh7+ 1-0 (3 ... Kf8 4. Qxf7#).
8) Palmer-Gould, Flint 3/25/84: 1. Qg5+ Ke4 2. Re1+ Kd4 (2 ... Re2 3. Qg4+) 3. Qe5+ 1-0 (3 ... Kc4 4. Re4+).
9) Palmer-Burke, Southfield 5/2/82: 1. Rxh6+ Kg8 2. Qc8+ Kf7 3. Qe6+ Kf8 4. Rh8+ Rg8 5. Rxg8# 1-0.
10) Palmer-Roe, Ann Arbor 12/10/91: 1. hg! Bg7 (1 ... Bxe3 2. Qh8#; 1 ... Rxc2 2. Qh7+ Kf8 3. Qf7#) 2. Qh7+ Kf8 3. Bh6! Ke8 (3 ... Bxh6 4. Qf7#) 4. Qg8+ 1-0 (4 ... Bf8 5. Qxf8#). 12/13/2008
Discovered Check and Double Check run together, with Double Check easier to calculate since the King must move. Yet some of these examples demonstrate how "only" Discovered Check is better than any Double Check options. Solutions at the end:
1) White to play
2) Black to play
3) White to play
4) Black to play
5) White to play
6) Black to play
7) White to play
8) Black to play
9) White to play
10) Black to play
SOLUTIONS:
1) Palmer-Person, Flushing 11/3/82: 1. Nc6+ wins the Queen. A famous Petrov trap.
2) Baze-Palmer, Lansing 9/5/04: 1 ... Be2+ 0-1 (2. Qg3 Bxf1+). Here the Double Check 1 ... Bh3+! also wins due to 2. Kxh3 Rh8# or 2. Kf3 Qg4#.
3) Palmer-Levine, Chicago 8/8/89: 1. Nb5+ 1-0 (1 ... Rc7 2. Qxc7+ Ka8 3. Qc8#).
4) Davenport-Palmer, Saginaw 5/22/82: 1 ... Ng3+ (Double Check) 2. Kd3 Nxh1 3. Rxh1 h5 and Black won (0-1).
5) Palmer-Olivier, Flushing 10/27/82: 1. ed+ Be7 2. dxc6 and White won (1-0).
6) Riggins-Palmer, Detroit 11/25/83: 1 ... Nf4+! 2. gxf4 gf+ 3. Kf2 Rxg1 and Black won (0-1).
7) Palmer-Jagodzinski, Toledo 9/9/95: 1. Ng4+ Kg8 (1 ... f6 2. Qxf6+ Kg8 3. Nh6#) 2. Nh6# 1-0.
8) Harris-Palmer, Ann Arbor 4/90: 1 ... Nf3+! 2. gxf3 gf+ 3. Kh1? (3. Bg3 Bxd4+) Qg2# 0-1.
9) Palmer-Forrester, Flushing 1/13/83: 1. Nxf5 Bxd1?! (1 ... Bg5 +-) 2. Nxh4+ 1-0 (2 ... Kh8 3. Be5+).
10) Freedman-Palmer, Chicago 12/30/91: 1 ... R8f4+ 2. Kh5 Bf7+ 3. Kxh6 Rg4+ 0-1 (4. Kh7 Rxg2). 12/9/2008
Many of these examples feature a straightforward sacrifice to promote a Pawn (like returning the exchange) and/or simplifying to a won K&P endgame. Solutions at the end:
1) White to play
2) Black to play
3) White to play
4) Black to play
5) White to play
6) Black to play
7) White to play
8) Black to play
9) White to play
10) Black to play
SOLUTIONS:
1) Palmer-Johnson, Flushing 2/16/85: 1. Rxc4! bxc4 2. b5 1-0.
2) Ramas-Palmer, Detroit 9/2/90: 1 ... Nd5+ 0-1 (2. Nxd5 Kxd5 3. Kd2 Ke4; 2. Kd2 Nxf4 3. gxf4+ Ke4).
3) Palmer-Southern, Southfield 5/29/82: 1. Rxe7! Kxe7 2. h7 1-0.
4) Thompson-Palmer, Dearborn 7/17/82: 1 ... Rxg4+! (1 ... d1=Q?? 2. Re7+ Kd2 3. Rd7+) 2. Kxg4 d1=Q+ 3. Kg5?! Qd8+ and soon drawn (1/2-1/2).
5) Palmer-Fraser, Lapeer 2/23/85: 1. Rxe5! fxe5 2. Kxe5 a5 3. Kd4 1-0.
6) Speiran-Palmer, Clio 1/23/84: 1 ... c2 2. Rc5 Ra8 3. h3 (3. Rxc2? Ra1+ mates) Ra1+ 4. Kh2 c1=Q 5. Rxc1 Rxc1 and Black won (0-1).
7) Palmer-Tuth, Ann Arbor 7/2/91: 1. Qxf8+! Bxf8 2. b7 Be7 3. b8=Q+ 1-0.
8) Cunningham-Palmer, Saint Louis 7/23/88: 1 ... f3 2. gf g2 3. Rb1 Nxf3+ 4. Ke3 0-1.
9) Palmer-Brady, Flint 10/6/83: 1. d7 Nf6 2. Re8! 1-0 (2 ... Nxe8 3. dxe8=Q).
10) Sena-Palmer, Boston 12/30/90: 1 ... b2! 2. Rb7 (2. Rxc2 Qxf1+ 3. Kxf1 b1=Q+) Bd3! 0-1 (3. Qxa1 bxa1=Q+). 12/7/2008
The Knight Fork tactic is common enough to deserve its own section. An Extended Knight Fork is when the Knight moves twice in a row (usually involving a check) to reach another forking square. Solutions at the end:
1) White to play
2) Black to play
3) White to play
4) Black to play
5) White to play
6) Black to play
7) White to play
8) Black to play
9) White to play
10) Black to play
SOLUTIONS:
1) Palmer-Johnson, Lapeer 2/24/85: 1. Nc6 wins the exchange.
2) Brandon-Palmer, Flint 12/8/83: 1 ... Nf4+ wins the Qe2.
3) Palmer-Day, Flushing 11/17/82: 1. Bxc5 wins the exchange after 1 ... Bxc5 2. Nxc7. The game went 1 ... Re4?! 2. Bxb6 axb6 3. Nxc7 and White won (1-0).
4) Miller-Palmer, Birch Run 1/26/83: 1 ... Nf3+ 2. Kf1 (2. Kg2 Ne1+; 2. Kh1 Neg5 & 3 ... Ne1+) Bb5+ 0-1 (3. Kg2 Ne1+).
5) Palmer-Fraser, Lapeer 2/23/85: 1. Nd6 wins a Pawn (1 ... Re7 2. Nxb7) but Black played 1 ... Qe7!? (1 ... Bxd3 2. Nxf7?! c4!) 2. Bxg6 hxg6 3. Nxe8 Rxe8 4. dc Nxc5 5. Qc2 and White won (1-0).
6) Day-Palmer, Flushing 2/24/83: 1 ... g5 2. Bg3 g4 3. Bd5?! (3. Nh4 Nd2) Nc3 4. Rbc1?? Nxd5 and Black won (0-1).
7) Palmer-Johnson, Flint 11/8/84: 1. Nxf7! Qxf7 2. Ng5 Qd7 3. Nxe6 and White won (1-0).
8) Day-Palmer, Flushing 1/29/83: 1 ... Nf3+ 2. Kf1? (2. Kh1 Nd2 3. Rg4) Nd2+ 3. Ke2 Nxc4 and Black won (0-1).
9) Palmer-Rombauer, Saint Louis 7/22/88: 1. Rxc6! g6 (1 ... Qxc6 2. Ne7+) 2. Rfc1 gxf5 3. Qa5 Kb8 4. Rxa6 1-0.
10) McAuliffe-Palmer, Chicago 8/7/89: 1 ... Rxe5! 0-1 (2. dxe5 Nb2). 12/5/2008
The technique of trapping is not readily categorized, since each situation is quite different. Yet the material gain is significant and often decisive. Solutions at the end:
1) White to play
2) Black to play
3) White to play
4) Black to play
5) White to play
6) Black to play
7) White to play
8) Black to play
9) White to play
10) Black to play
SOLUTIONS:
1) Palmer-Banta, Trenton 8/22/82: 1. Bg4 traps the Qh3.
2) Armbruster-Palmer, Flushing 2/2/83: 1 ... g3 traps the Bh2. The game ended 2. Kh1!? Bxf2 3. Rf1? g2# 0-1.
3) Palmer-Brattin, Ann Arbor 11/20/83: 1. Rg8 Bg7 (1 ... Be7/Rf7 2. Kg6) 2. Kg6 Rh8 3. Kxg7 Rxg8+ 4. Kxg8 1-0.
4) Day-Palmer, Flushing 1/12/83: 1 ... Kd7 2. Nd8 Rhxd8 3. Bxd8 Kxd8 and Black won (0-1).
5) Palmer-Wheeler, Woodhaven 7/4/82: 1. Bxg6 Bxg6 2. Rf8 Bxh5 3. gxh5 Bf6? 1-0.
6) Riggins-Palmer, Detroit 11/25/83: 1 ... Qxf1+! 2. Qxf1 Rxf1+ 3. Kxf1 Nxe4 0-1. The Rf5 is trapped.
7) Palmer-Thompson, Dearborn 9/25/82: 1. Bxf7+! Rxf7 (1 ... Kxf7 2. Ne6! Kxe6? 3. Qd5+) 2. Ne6 1-0. A stock opening trap.
8) Frohman-Palmer, Woodhaven 7/4/83: 1 ... Ba4! 2. Kd2 Ke7 3. Kc3 Bd7 4. Kc4 Kd6 5. Nb5+ Bxb5+ 6. Kxb5 Kd5 0-1.
9) Palmer-Day, Flushing 10/13/83: 1. Rf3 traps the Qe3. The game continued 1 ... Qxf3 (1 ... Bg4!) 2. Qxf3 Rxf7?! 3. Bb3 and White won (1-0).
10) Levadi-Palmer, Detroit 5/24/98: 1 ... Bd1! 0-1 (2. Qxd1 Qxd1 3. Rxd1 Rxd1 forks the Bishops; 2. Qb1 Bxf2 traps the Re1). 11/24/2008
The Pin is a versatile and effective tactic which often wins material. An Absolute Pin means it can't move, a Relative Pin means it shouldn't move, and a Terminal Pin is against a mate threat. Solutions at the end:
1) White to play
2) Black to play
3) White to play
4) Black to play
5) White to play
6) Black to play
7) White to play
8) Black to play
9) White to play
10) Black to play
SOLUTIONS:
1) Palmer-Yehle, Flushing 11/17/83: 1. Bg5 Qd6 2. Nxf6+ wins a piece.
2) Miller-Palmer, Birch Run 1/12/83: 1 ... Rc1 2. Ra7 Be4 3. Ra5+ (3. Rxa2 Rxc2+ 4. Rxc2 Bxc2 5. Kxc2 Kxf5) Kf4 0-1.
3) Palmer-Kenney, Flint 1/27/85: 1. Nxe6+ fxe6 2. Rc3 Rd4 3. b3 a5 4. Rxc4! wins a piece.
4) Koteles-Palmer, Flint 3/1/83: 1 ... Qc5+ 2. Kf1 (2. Kf3 g4+ mates) Rd1 wins the Queen.
5) Palmer-Tamo, Flushing 2/16/85: 1. Nxc5 bxc5 2. Rd1 Rxe5 3. c4 wins a piece.
6) Anthony-Palmer, Lapeer 2/24/85: 1 ... Nf3! 2. Qg2 (2. Qxe3? Qxh2#) Nxh2 3. Qxh3 Rxh3 0-1.
7) Palmer-Skidmore, Flint 11/9/82: 1. Re1+ Kd8 2. Qf6+ Kc7 3. Re7 1-0. Note 1. Qe5+ (Fork) also wins.
8) Dickens-Palmer, Flint 5/12/84: 1 ... Bf3+ 2. Be2 (2. Ke1? Qg1#; 2. Kc2 Nxe3+) Qf1+! 3. Qe1 Bxe2+ 4. Kd2 Qxe1+ 5. Rxe1 Bxc4 and Black won (0-1).
9) Palmer-Kinzie, Dearborn 1984: 1. Rg3+ Kf8 2. Rf3 wins the Queen.
10) Darmofal-Palmer, Dearborn 1984: 1 ... Ng3 2. Rg1 Nxd4 3. Nxd4 Qxd4 4. Qxd4 Bxd4 0-1 (5. Rf1 Bxc3+ 6. bxc3 Rxe2+). 11/21/2008I like the term Mating Net for games ending with a mating combination, first because announcing "Mate in N" helps reveal the answer, second as N is sometimes prolonged by the defender hopelessly giving away material, and third so the solver can figure out how the pieces work together to create mate. So everyone find your ten favorite mates and post a puzzle set! Solutions at the end:
1) White to play
2) Black to play
3) White to play
4) Black to play
5) White to play
6) Black to play
7) White to play
8) Black to play
9) White to play
10) Black to play
SOLUTIONS:
1) Palmer-Lawrence, Flint 10/5/82: 1. Qxf6+ Rg7 2. Qxg7# 1-0.
2) Wygrecki-Palmer, Flint 2/27/83: 1 ... Ba5# 0-1.
3) Palmer-Ballger, Flint 12/7/82: 1. Rg7+ Kh8 2. Nf7# 1-0 (1 ... Kf8 2. Nxh7#).
4) Brandon-Palmer, Flint 12/8/83: 1 ... Bf3+ 2. Kf1 Qc1# 0-1.
5) Palmer-Skidmore, Flint 11/15/83: 1. Be5+ Bg7 2. Qf7! 1-0 (2 ... Bxe5 3. Qf8#).
6) Len-Palmer, Trenton 8/22/82: 1 ... g2+ 2. Kg1 h3 3. Bf2 (3. Bg3!? Be3+!) h2# 0-1. Full credit for 2 ... Be3+ 3. Kh2 g1=Q+ 4. Kh3 Qh1#.
7) Palmer-Labrecque, Flint 5/12/84: 1. Re7+! 1-0 (1 ... Kg8/Kxg6 2. Rxg7#).
8) Bosnic-Palmer, Flint 1/12/85: 1 ... Qe4 2. f4 Qf3! 3. Re1 Rxe3! 0-1 (4. Qxe3 Qg2#; 4. Rxe3 Qf1#).
9) Palmer-Jackson, Plymouth 9/2/84: 1. Rxh5! Rh8 (1 ... gxh5 2. Qg5+ Kh8/Kf8 3. Qh6#; 2 ... Kh7 3. Qxh5+) 2. Nf5+! gxf5 3. Qg5+ 1-0 (3 ... Kf8 4. Rxh8#).
10) Anthony-Palmer, Flint 1/27/85: 1 ... Bc3! 2. Qe3 (2. bxc3 Qxd2#) Rxd2+ 3. Qxd2 (3. Kc1 Rc2+ 4. Kd1 Rd8+; 4. Kb1 Rxb2+ 5. Kc1 Qc2#) Qxd2# 0-1. 11/19/2008Students of every level are encouraged to review your games for instructive tactics, then create puzzle sets by theme. This first set of ten demonstrates Forks and they are all Easy. Solutions at the end:
1) White to play
2) Black to play
3) White to play
4) Black to play
5) White to play
6) Black to play
7) White to play
8) Black to play
9) White to play
10) Black to play
SOLUTIONS:
1) Palmer-Zink, Ann Arbor 9/21/83: 1. Nf6+ wins the Qd7.
2) Meier-Palmer, Clio 2/13/82: 1 ... Bf3+ & 2 ... Bxe4.
3) Palmer-Jones, Flint 10/11/83: 1. Nxf7! Kxf7 2. Qb3+ & 3. Qxb7.
4) Lang-Palmer, Flint 6/29/82: 1 ... Bxf3 2. Qxf3 Qh4+ 3. g3 Qxa4.
5) Palmer-Helms, Ann Arbor 9/3/83: 1. Nxc8 1-0 (1 ... Rdxc8 2. Rd7).
6) Swathell-Palmer, Dearborn 7/18/82: 1 ... Qxf2+ 2. Kh1 Nf6! 3. Qf3 Qxb2.
7) Palmer-Ghantous, Flint 3/1/83: 1. Nxe5+! dxe5 2. Bxe5 & 3. Bxf6.
8) Lehotzky-Palmer, Flint 11/16/82: 1 ... Rdxd2! wins a piece due to 2. Rxd2 Nf3+. The game ended 2. Rf8+ Kg7 3. Rxf5? Nd3+ 0-1.
9) Palmer-Taddei, Ann Arbor 9/5/83: 1. Re7+ Kc6 2. Rxc7+! Kxd5 3. c4+ Qxc4+ 4. Rxc4 Kxc4 5. b3+ and White won.
10) Bemben-Palmer, Ann Arbor 11/20/83: 1 ... Qd4+ 2. Ke2 Qxe4+ 3. Kf2 Rxf7+ 4. Qxf7 Qxa4 5. Qe6+ (5. Rxb2? Qd4+) Kb8 6. Qe3? 0-1. 10/20/2008
The Tarrasch Trap is a variation of the Ruy Lopez, Steinitz Defense, where White wins material through a direct tactical sequence straight out of the opening. It is also called the Dresden Trap since the seminal game was played there (Tarrasch-Marco, Dresden 1892). This Trap is particularly instructive because it combines many tactical elements: Remove the Guard, Pin, Skewer, Fork and Weak Back Rank.
Here's Tarrasch defeating Marco with the Tarrasch Trap: 1. e4 e5 2. Nf3 Nc6 3. Bb5 d6 4. d4 Bd7 (Black avoids giving up the center with 4 ... exd4 5. Nxd4) 5. Nc3 Nf6 6. 0-0 Be7 7. Re1:
Black's position with the centralized minor pieces is known as the Blackburne Formation. Here the move 7. Re1 sets up the Tarrasch Trap, since the Pe4 is now defended twice. Black does best to play 7 ... exd4 which gives White a distinct spatial advantage (8. Nxd4 Nxd4 9. Bxd7+ Qxd7 10. Qxd4), but doesn't lose any material. Instead 7 ... 0-0? falls into the Trap: 8. Bxc6 (not 8. dxe5!? Nxe5 and the Trap is off) Bxc6 (if 8 ... bxc6 9. dxe5 dxe5 10. Nxe5 wins a Pawn, a typical motif in the Ruy Lopez) 9. dxe5 dxe5 10. Qxd8 (10. Nxe5!? Qxd1 forces the Re1 or the Nc3 off the Pe4 and Black holds the balance) Raxd8 (we'll examine 10 ... Rfxd8 later) 11. Nxe5 Bxe4?! (+1.71 versus 11 ... Bd7 +0.84 per Junior 8):
This appears to win back the Pawn, compared to 11 ... Nxe4?? 12. Nxc6 (Remove the Guard) and White wins a piece (12 ... bxc6 13. Nxe4). But after 11 ... Bxe4?! White plays 12. Nxe4 Nxe4 13. Nd3 blocking the d file (13. Rxe4?? Rd1+ mates) with a Skewer on the Ne4 and the Be7. The game continued 13 ... f5 14. f3 Bc5+ 15. Nxc5 (not 15. Kf1!? Bb6 holds) Nxc5 16. Bg5 Rd5 (if 16 ... Rde8 17. Be7 wins the Exchange; on 16 ... Rd7 17. Be7 Na4 18. Bxf8 Kxf8 +2.21/15 [50M] per Crafty) and White finished it off with 17. Be7 Re8 18. c4 1-0:
White wins the exchange (18 ... Rxe7 19. Rxe7 or 19. cxd5), otherwise Black loses the Nc5 if the Rd5 moves.
Now let's evaluate 10 ... Rfxd8 instead, to see how it alters the Tarrasch Trap theme. White would still play 11. Nxe5 Bxe4?! (Black should bail out down a Pawn with 11 ... Bd7 or 11 ... Be8) 12. Nxe4 Nxe4 13. Nd3 f5 14. f3 Bc5+ 15. Kf1! (not 15. Nxc5 Nxc5 16. Bg5 Rd7 =) Rf8 16. Ke2 (not 16. fxe4!? fxe4 regains the piece):
Both the Bc5 and the Ne4 are under attack, so White wins a piece.
Here's a training game I played against a student: 1. e4 e5 2. Nf3 Nc6 3. d4 d6!? 4. Bb5 (transposing to the Ruy Lopez) Bd7 5. Nc3 Nf6 6. 0-0 a6? 7. Bxc6 Bxc6 8. dxe5 dxe5 9. Qxd8+ Rxd8 10. Nxe5:
This game resembles the Tarrasch Trap, with the added benefit that Black hasn't castled yet so the open e file might cause real problems (like 10 ... Bxe4?! 11. Re1 Bf5 12. Ng6+). Play continued 10 ... Nxe4?! (10 ... Bd7 is better) 11. Nxc6 (Remove the Guard) Nxc3 12. Nxd8 and here Black slipped up with 12 ... Kxd8?? allowing 13. bxc3 and White won a Rook and the game. Instead the Zwischenzug 12 ... Ne2+ 13. Kh1 Kxd8 leaves Black down the exchange, although the Ne2 will be hard to extricate after 14. Be3.
Another game I recently played as White on the Internet, where the Steinitz Defense to the Ruy Lopez seems to be fairly popular: 1. e4 e5 2. Nf3 Nc6 3. Bb5 d6 4. d4 Bd7 5. 0-0 Nf6 6. Nc3 Be7 7. Re1 0-0? 8. Bxc6 Bxc6 9. dxe5 dxe5 10. Qxd8 Raxd8 11. Nxe5 Bb4 12. Nxc6 bxc6 13. f3 Rfe8 14. Be3 c5 15. Red1:
And White won the endgame (1-0).
Tarrasch published his analysis of this variation in the February 1891 issue of "Deutsche Shachzeitung" one year before his game against Marco, and reportedly he only spent four minutes on the entire game. Be prepared! :-)
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