A most instructive game demonstrating the pitfalls of poisoned pawns. Black's Q grabs one and white through a series of good moves traps her.

misslead    --    Spassky2
Bad Bishops-Veggies clan match   Red Hot Pawn
2003.09.24     1-0     B23d


1.e4 c5 2.Nc3 d6 3.g3 a6 4.Bg2 Nf6 5.Nge2 g6 6.d3 Bg7 7.Be3 O-O 8.h3 Nc6 9.O-O Bd7 10.Qd2 Qb6
not a bad move in itself, but it inspires white to set up a little trap. The most obvious continuation for white now is to put a rook on b1 and go for queenside initiative, but white plays a psychologically fine move, tempting black to grab a pawn. The White player, knows (by training and experience) very well the danger of taking poisoned moves, especially the b2/7 pawn, and sees an opportunity to try that here.
11.f4!? Qxb2? (D)

BR :: :: BR BK ::
:: BP :: BB BP BP BB BP
BP :: BN BP BN BP ::
:: BP :: ::
:: :: WP WP ::
:: WN WP WB WP WP
WP BQ WP WQ WN :: WB ::
WR :: :: WR WK

This is wrong. You can only take with an undefended Knight at c3, not if you don't have that tempo. Here, the Queen is defending Nc3. A better move for black was Rad8, still leaving white with an advantage. Now white takes strong advantage immediately
12.e5! dxe5 13.fxe5 Nxe5 14.Bxc5 Rac8 15.Rab1 Qxb1 16.Rxb1 Rxc5 17.Rxb7? (D)

:: :: BR BK ::
:: WR :: BB BP BP BB BP
BP :: :: BN BP ::
:: BR BN ::
:: :: :: ::
:: WN WP :: WP WP
WP :: WP WQ WN :: WB ::
:: :: :: WK

Not that good. With 17. ... Bxh3!? 18.Rxe7 Bxg2 19.Kxg2 Rfc8 black would have reduced whites advantage and still have fighting chances. White should have played immediately 17.Qe3!
17...Rfc8?
But black doesn't take that chance and let's white restore full advantage.
18.Qe3! Kf8 19.Ra7 a5 20.Ra8 Ne8 21.Rxc8 Rxc8 22.Qa7 a4 23.Kf2 Rc7 24.Qb6 Bf6 25.Qb4 Nd6
Another attempt would be 25. ...h6. But after 26.d4 Nc6 Rxc6 27.Qxa4 white would still win
26.d4 Rb7??
Black was desperate, and knowing it was a clan match, he went on hoping to force something to get out of a lost position. Mistakes come easily then. The rest is history, white makes the kill flawlessly
27.Bxb7 Bxh3 28.dxe5 Bxe5 29.Nxa4 Nxb7 30.Qxb7 (D)

:: :: BK ::
:: WQ :: BP BP :: BP
:: :: :: BP ::
:: :: BB ::
WN :: :: :: ::
:: :: :: WP BB
WP :: WP :: WN WK ::
:: :: :: ::

A fine game, with an important lesson on move 11. ... Qxb2?. Pawns on b2/7 are often poisoned.
1-0