Today’s chess tactics quiz!

Part I: Montcada International Open

(Click on any diagram to find out information about who is to play. Good luck! Solutions later)
- MONTCADA 2016.6.25 Oliva Castaneda, Kevel–Guetas Sanchez, Hugo. Position after 17 moves of play. Black’s last move (17…Rb8) was a serious mistake. WHITE TO PLAY AND CRUSH!
- MONTCADA 2016.7.1 Swayams, Mishra–Yashas, D. Position after 31 moves. WHITE TO PLAY AND WIN!
- MONTCADA 2016.6.26 Teichmann, Erik–Cruz, Cristhian. Position before Black’s 19th move. BLACK TO PLAY AND CRUSH!
- MONTCADA 2016.6.28 Prince, Bajaj–Swayams, Mishra. Position after 20 moves. WHITE TO PLAY AND CRUSH!
- MONTCADA 2016.7.1 Grigoryan, Karen –Vera Siguenas, Deivy. Position after White’s 49th move (Nc4). A serious mistake that is all the more unfortunate because simply 49.b6 would have quickly won the game. Now Black has a second lease on life and can hold the game with creative play. WHAT IS BLACK’S SAVING CLAUSE?
Part II: World Seniors Team Championship

- World Senior Teams +50 Radebeul GER 2016.6.28 Bartsch, Berthold–Anastasian, Ashot. White’s last move was 16.c3, attacking the Knight. BLACK TO PLAY AND CRUSH!
- World Senior Teams +50 Radebeul GER 2016.6.27 Krebs, Johann–Enders, Peter. Position before Black’s 20th move. BLACK TO PLAY AND CRUSH!
- World Senior Teams +50 Radebeul GER 2016.6.27 Nunn, John –Denk, Adolf. Position after 22 moves. White is obviously on top. WHITE TO PLAY AND CRUSH!
- World Senior Teams +65 Radebeul GER 2016.6.28 Vasiukov, Evgeni–Stebbings, Anthony . Position after 22 moves. WHITE TO PLAY AND CRUSH!
Part III: Russian Higher League

- 69th Russian Higher League Kolomna 2016.6.28 Kokarev, Dmitry–Alekseenko, Kirill. Position after 33 moves. WHITE TO PLAY AND CRUSH!
- 69th Russian Higher League Kolomna 2016.6.25 Vavulin, Maksim–Oparin, Grigoriy. Position before Black’s 32nd move. Black to play and CRUSH!
- 69th Russian Higher League Kolomna 2016.6.27 Oganian, Miran–Khairullin, Ildar. Position before Black’s 28th move. Black has an obvious edge, but at first sight it is not clear if he can make progress. BLACK TO PLAY AND CRUSH!
- 69th Russian Higher League Kolomna 2016.6.24 Riazantsev, Alexander–Bocharov, Ivan. Position after 17 moves. The position looks normal, but there is a trick in the position, carefully hidden. WHITE TO PLAY AND CRUSH!
- 69th Russian Higher League Kolomna 2016.6.25 Bocharov, Ivan–Kurbedinov, Ramis. Position after 16 moves. White to play and CRUSH!