Wednesday, July 2, 2008

Errors in Chess Tactics for Beginners

This is a list of all the errors in chess tactics for beginners (Thanks, Blue Devil Knight)

Phase 2
180 Also correct 1. Qd6
275 Also correct 1. Ne7+ Kh8, 2. Ng6#
353 Also correct 1. Qe8+ Nxe8, 2. Nf7#
379 Also correct 1. Rh5+ gxh5, 2. Qg7#, Qb7# not listed as an alternative
389 - Rh2+ is a blunder pure and simple.

Phase 3
430 - Also correct in first sideline is 2. Bf7#.
519 - Ne7# not listed as an alternative
632 Also correct 1. Qxf5 Kd5 2. Nc5+

Phase 4
838 Also correct 1. Bc6+ Qxc6, 2. Qxe7#
1013 Also correct 5. Kd3 or 5. Kd1


Phase 5
1108 Also correct 1. Nc8 Ka8, 2. Nc6 c1=Q, 3. Nc6#
1110 Also correct 1. Bxf5 g2 2. Bc8 g1=Q 3. Bxb7#
1126 Also correct 1. Rh8+ Kg6, 2. Rxh6+ gxh6 3. Qh5+ Kh7 4. Qxf7#
1159 3 Qf1# is also correct.
1160 - 3...Kb8 4. Nd7+ Ka8 6. Rh6 seems like an interesting line to include
1163 - 1. Qe3 is also good.
1185 Side variation 3. *. That is, pretty much any move works. Just need to stop that pawn from castling, and king doesn't even need to move to do that!
1194 1. Qe3 also works.
1196 Refutation 1 Qg4 Qc6
1202 Major error in variation: 2. Qxh7# is overlooked to gain a Knight!?? Perhaps black is supposed to have a rook at h8.
1211 Refutation 1. Qb4 Rb3
1219 3...Qxd2 is better.
1236 In variation, 2 Qe8# isn't given credit!
1245 2. Qc3 also works.
1249 First subvariation 3. Nxf7+ is also good (probably better than their Nf5). Note that 1. Qe5 is refuted by 1...Qxe5+ (in between check), so the first move of the program is the best.
1254 1 c4 is fine.
1258 - 1. Bg8+ Kh8 2. Be6! seems like it should be included.
1259 - 10 g5 is fine.
1260 Better and correct is 6. Kf5 (mate in 9 instead of 10)
1262: every single move for white is a win! Not just 1. c7+, Moves after that have too many alternatives to list.
1264 - Kc4 should be listed as an alternative.
1268 Tons of alternative good first moves.Any forward move of any piece works, but it only gives credit for 1 Kg4. True for most of the moves in this problem. Awful.
1269 2. K*, where * is any legal King move, also wins. 3. Ka3 or Kc3 also work! 4. K* again. I'm not gonna bother listing any more in this problem which is a breach of contract between teacher and student.
1271 Sideline 5 Qa8+ also works.
1272 Move 3.Ke5 works, and 3. Ke4 also wins, but not as quickly; 4: Kd5 works, but not as quickly.
1277 - 6. Kg6 also works.
1278 In both main and side variation, any move by the K wins, not just Kd2.
1286 3. Ke6 also works in main line. Probably other mistakes.
1289 - Kc7 should not be listed as an alternative because it loses in any reasonable line.
1290 - there is no draw for black. he loses.
1292 1. h4 also works for draw.
1296 6. Many other K moves work (e.g., Kf3 or Kh3).
1299 1. Kd5 also works. 2. Ke5 also works.
1302 1. Ke5 and 1. Ke6 are also fine. 2. b5 also works, as does 3. Kxg5.
1309 Any queen check works here on move 3, not just 3. Qg2+
1312 2. Kc3 mates next move, so it really isn't bad.

I personally got very angry at problem 1159, where I got everything perfect until I chose the "wrong" checkmate.

No comments: