(;FF[4]
CA[UTF-8]
GM[1]
GN[Basic Instinct Practice]
PC[https://online-go.com/review/1005264]
PB[Black]
PW[White]
BR[3p]
WR[3p]
OT[Error: time control missing]
RE[?]
SZ[19]
KM[6.5]
RU[Japanese]
C[

-- chat --
FireScourge: https://senseis.xmp.net/?BasicInstinct
dsnothing: 1. From move 0: 
]
(;B[pd]C[4-4 "Hoshi"]
(;W[qf]LB[nc:A]LB[nd:B]LB[qe:D]LB[pf:C]C[This is the most common approach to a 4-4 (aka "Hoshi") stone. A and D are the most common responses from black.]
(;B[qe]C[What should white's first instinct be when black plays the kick? Play at the triangle to see black's follow up if white plays away.]
(;W[pf]LB[nc:B]LB[nd:A]C[Correct! White's first instinct in response to the kick should be to block black from making the tiger's mouth on top and threatening to capture the stone. Play at the letters to continue this common joseki.]
(;B[nd]LB[pj:A]LB[qj:B]C[Black extends to prevent being sealed into the corner (this does not guarantee points in the corner).]
(;W[pj]C[White extends to make a base. Joseki complete.]
)(;W[qj]C[White extends to make a base. Joseki complete.]
))(;B[nc]LB[pj:A]LB[qj:B]C[Black extends to prevent being sealed into the corner (this does not guarantee points in the corner).]
(;W[pj]C[White extends to make a base. Joseki complete.]
)(;W[qj]C[White extends to make a base. Joseki complete.]
)))(;W[pp]C[White ignores black's kick...]
;B[pf]C[Black has severely weakened white's stone and made a very strong shape. Black's stones will continue affecting the rest of the board while white's stone will struggle to live.]
;W[qg]
;B[re]C[Black has a large corner with no cutting points and white's stones are weak and undercut, meaning it will be difficult for them to make eyes (or points) later in the game.]
)(;W[rf]LB[re:B]LB[pf:A]C[Incorrect. We do not want to play on the second line in the opening. This invites black to play at A to take a strong outside with good shape or B to take a large corner. In either case white still does not have a strong position in the R11 area.]
(;B[pf]LB[qi:A]
;W[qi]C[White is very small and black's corner is strong and influential toward the top side of the board.]
)(;B[re]LB[pf:A]
;W[pf]LB[pi:A]
;B[pi]C[Because black's corner is secured, black can play a severe pincer now and White's stones are in a lot of danger without any gain.]
)))(;B[pf]TR[pp]C[What should white's first instinct be? Play at the triangle to see what black's follow up will be.]
(;W[pp]
;B[qe]C[Black has severely weakened white's stone and made a very strong shape. Black's stones will continue affecting the rest of the board while white's stone will struggle to live.]
;W[qg]
;B[re]C[Black has a large corner with no cutting points and white's stones are weak and undercut.]
)(;W[pg]LB[of:A]TR[pp]C[Correct! White's first instinct should be to hane, damaging black's stone and projecting strength to the side. Play at the letters to see the rest of this common joseki or play at the triangle to see what happens if black plays away..]
(;B[of]C[Black extends to prevent white from wrapping around.]
;W[qe]LB[qd:A]C[White extends to poke at black's weakness and ask for the corner.]
;B[qd]LB[qh:C]LB[qi:B]LB[qj:A]C[Black blocks to defend the corner.]
(;W[qj]C[White extends to make a base. Common joseki complete.]
)(;W[qi]C[White extends to make a base and defend the R13 cut. Common joseki complete.]
)(;W[qh]C[White makes a tiger's mouth to defend the cut. Common Joseki complete.]
))(;B[pp]LB[pe:A]
;W[pe]C[When white plays this atari what should black's first instinct be?]
;B[of]LB[qe:A]C[Correct! Black should extend from atari to make this stone harder to capture. Unfortunately, playing away at Q4 has already put black in a very bad position. White has many options depending on the surrounding area, but the simplest is to play at A.]
;W[qe]C[White connects.]
;B[oe]LB[od:A]C[Black turns to try to connect all their stones.]
;W[od]C[This cut is very severe. Now black's stone at Q16 is in danger of being captured in a ladder with A and black's stones in the center are also very weak. There are many ways to continue from this point so we will end this study here.]
))(;W[qe]C[This move is fine. It should not be white's first instinct to extend here, but if they do, what should black's first instinct be?]
;B[pe]C[Correct! White is peeping at black's one space jump so it is most natural to block white from punching through black's shape.]
)(;W[qg]LB[qe:A]C[Incorrect. This keeps white's stones strong, but does not take advantage of black's weakness at Q15. Black can now play at A to fix the weakness and take a strong corner.]
;B[qe]C[Black's corner is large and the shape is very difficult to attack. White's stones are pressed down against the side and lack eye shape.]
))(;B[nd]LB[oe:A]
;W[oe]TR[pp]C[What should black's first instinct be when white plays the peep? Play at the triangle to see what happens if black ignores this move.]
(;B[od]LB[rd:A]LB[pj:B]C[Correct! When white plays the peep. threatening to cut through black's 2 stones, the first thought should be to connect. White can play at A or B to finish the joseki.]
(;W[pj]C[Joseki complete.]
)(;W[rd]LB[qc:A]C[White slides to ask for some of the corner.]
;B[qc]LB[pi:B]LB[qi:A]C[Black blocks the corner.]
(;W[qi]C[White makes a base to settle the group. Joseki complete.]
)(;W[pi]C[White extends to strengthen the group, aiming for influence. Joseki complete.]
)))(;B[pp]C[What should white play now?]
;W[od]TR[nq]C[Correct! White should push through black's shape, splitting the square marked stones. What should black play now? Play at the triangle to see what happens if black plays away again.]
(;B[oc]C[Correct! Although black has 2 cutting points, when white cuts, white will also be disconnected, and so black will still have a fight.]
)(;B[nq]
;W[oc]SQ[nd]SQ[pd]C[White slices through black's shape completely. Now there is no chance of black connecting the square marked stones.]
)))(;B[nc]LB[rd:A]
;W[rd]LB[qc:A]C[White asks for a share of the corner.]
;B[qc]LB[qi:A]C[Black defends the corner.]
(;W[qi]LB[pj:A]C[White extends to make a base.]
;B[pj]C[How should white respond to this shoulder hit?]
(;W[qj]C[Correct! When you are shoulder hit it should your first instinct to extend toward the opponent's stone to strenghten your own while weakening your opponent. How should black respond to white's extension?]
(;B[pk]C[Correct! Black should extend in the same direction. This makes the exchange of strength relatively even.]
)(;B[pi]TR[ph]TR[pk]C[Incorrect. If black extends along white's stones it leaves 2 powerful hanes that will give white an advantage in the local fight.]
))(;W[pi]C[Good! This is the correct instinct and sometimes this is a better move, but on an open board there is a better direction. Go back a move and see if you can find it.]
))(;W[rc]C[While this move may be your first instinct to take some of the corner away, it is too early in the game to play here. Black's group is still strong after this move and so S17 is considered endgame. Moves on the outside like R11 or R12 are better in the opening.]
)))(;W[qd]C[When white attaches directly to black's stone what should black's first instinct be?]
(;B[qe]C[This move is good instinct but there is a better direction. Go back one move and see if you can find it! Sometimes this is correct, but it depends on surrounding stones.]
)(;B[qc]C[Correct! Black's hane here puts a lot of pressure on white by reducing the stone to 2 liberties. What should white's instinct be?]
;W[qe]LB[rc:A]C[Correct! While there are many other moves possible such as the crosscut at Q17, a natural response is to extend to increase liberties and avoid an atari. Click the letters to continue the joseki.]
;B[rc]LB[pe:A]C[Black undercuts white's position on the side.]
;W[pe]LB[od:A]C[White turns to make a wall projecting strength along the side.]
;B[od]LB[qi:A]C[Black extends to prevent white from atariing to force black into the corner.]
;W[qi]C[White extends to make a base along the side. Joseki complete. Joseki complete.]
)(;B[pc]C[This is a good instinct as well, but reverts to the common 3-3 invasion which will not be discussed in this demo.]
;W[qc]
(;B[pe]
(;W[qe]
;B[qf]C[Joseki complete.]
)(;W[rf]C[Joseki complete.]
))(;B[qe]LB[re:A]
;W[re]LB[qf:A]
;B[qf]LB[rf:A]
;W[rf]LB[qg:A]
;B[qg]LB[pb:A]LB[rg:B]
(;W[pb]LB[ob:A]
;B[ob]LB[qb:A]
;W[qb]LB[nc:A]
;B[nc]C[Old fashioned. Joseki complete.]
)(;W[rg]
;B[qh]C[Joseki complete.]
))))(;W[pf]LB[qf:A]C[1 space high approach. This move is not common because it does not threaten the corner points.]
;B[qf]C[What should white's first instinct be when black attaches here?]
(;W[qg]C[Correct! White's first instinct should be to hane, weakening black's stone and projecting strength toward the outside. What should black's first instinct be?]
;B[qe]C[Correct! When white hane's black's first instinct should be to extend back, strengthening the R14 stone by extending its liberties. How should white continue?]
;W[pg]LB[nc:A]C[Correct! White should fix the weakness in their shape by connecting the cut! Play the letter moves to finish the joseki.]
;B[nc]LB[qk:A]C[Black prevents themself from being sealed into the corner.]
;W[qk]C[White extends to make a base for eyespace. Joseki complete.]
)(;W[qe]LB[pe:A]C[Incorrect. While responding to an attachment with a hane is good, in this case black has a powerful cutting move at A. Black's cutting stone has been strengthened before the cut has even happened!]
;B[pe]C[This is a crosscut fight where black is one move ahead.]
)(;W[pg]C[Incorrect. This move is too passive and will allow black to play at A, taking more points while strengthening white's group which does not yet have a base.]
)(;W[pe]LB[qe:A]C[Incorrect. White threatens to cut, but once black plays at A there is not much more white can do.]
;B[qe]LB[od:A]
;W[od]LB[pc:A]
;B[pc]MA[oe]MA[pg]TR[pp]C[White has strengthened black's corner too much and still has weaknesses on the outside. This is disastrous for white. Play at the triangle to see what happens if white plays away.]
;W[pp]LB[pg:A]
;B[pg]LB[og:A]
;W[og]MA[oc]MA[oe]MA[of]MA[oh]C[White has too many weaknesses to deal with and black is taking too many points.]
)(;W[of]LB[qg:A]C[Incorrect. This move does not affect the contest between Q14 and R14. Black can now play at A and white's stones are doing nothing]
;B[qg]LB[qe:A]C[White can't even cut at A.]
;W[qe]LB[pe:A]
;B[pe]C[White's stone at R15 has nowhere to go]
)))(;B[qd]LB[oc:A]LB[od:B]C[3-4 "Komoku"
A and B are approaches on the "wider side" and are the most common approaches to the 3-4.]
(;W[oc]LB[mc:B]LB[pe:A]C[1 space low approach.]
(;B[pe]C[A calm response from black. Play at the triangle to see what black can do if white plays elsewhere.]
(;W[lc]LB[pc:B]LB[nd:A]
(;B[nd]C[Black is pressing on white, what should white's first instinct be?]
;W[nc]C[Correct! White should block black by extending in the direction of black's stone. This strengthens white, weakens black, and works toward connecting the stones.]
)(;B[pc]C[What should white's first instinct be in response to the kick?]
;W[od]C[Correct! White's first instinct should be to stand up, preventing black from making a strong shape. Joseki complete.]
))(;W[pp]LB[nd:A]
;B[nd]LB[mc:A]LB[nc:B]C[White's first instinct should be to play at O17, but we can treat our stone lightly and play at A as well.]
(;W[mc]LB[nc:A]C[Pushing through at A is considered a bad exchange at this point in the game, but what if they do?]
;B[nc]C[What should white's first instinct be?]
;W[nb]TR[mb]TR[ob]C[Correct! If your opponent tries to push through a 1 space jump your first instinct should always be to block. You can worry about the cuts later: if black gets to play O18 then you're already cut completely!]
)(;W[nc]C[White's first instinct should be to play the extension toward black's pressing stone. What should black's first instinct be?]
;B[md]C[Correct! Black should also extend in the same direction to stay ahead of white's stones.]
)))(;B[mc]C[A and B are moves white can play to avoid being sealed into the corner.]
(;W[pe]LB[pd:A]LB[qe:B]C[Black's first instinct should be to play at B to prevent white from sealing black into the corner, however because of the pincer stone at N17 black can play at A to start a fight.]
(;B[pd]C[What should white's first instinct be when black pushes here?]
;W[od]LB[oe:A]C[Correct! White should block, trying to connect the P17 stone to the Q15 stone. Connections are one of the most important concepts in go.]
;B[oe]LB[ne:A]
;W[ne]C[What should black's first instinct be?]
;B[of]C[Correct! Black should extend from the atari. If black plays anything else then white will capture the P15 stone and be completely connected, ending the fight. What should white do next?]
(;W[md]C[Correct! White should defend this cutting point. The rest of the joseki is complicated and therefore beyond the scope of this demonstration, so we will end this line here.]
)(;W[nd]C[Protecting the O16 cutting point is a good idea, however we can do it with better shape. Go back one move and try again.]
))(;B[qe]C[Black's first instinct should be to extend in the direction of white's stone. What should white's first instinct be?]
(;W[pf]LB[qf:A]C[Correct! White should continue extending in the same direction to prevent black from getting ahead.]
;B[qf]LB[pg:A]
;W[pg]LB[qg:A]
;B[qg]LB[ph:A]
;W[ph]C[Joseki complete. This is a bit old fashioned, but still playable. Black has taken 3rd line territory in exchange for white's 4th line influence.]
)(;W[pd]C[Incorrect. If white changes direction then black has a chance to severely damage white's shape. How should black respond?]
;B[pf]C[Correct! When black plays the hane at the head of 2 stones it reduces white's liberties and changes the direction that the stones are flowing. Black is beginning to block white's stones from affecting the right side of the board at all.]
)))(;W[oe]LB[pf:A]
;B[pf]C[What should white's first instinct be when black presses?]
;W[of]C[Correct! White should extend along toward black's stone, strengthening white and weakening black. How should black respond?]
(;B[pg]LB[og:A]C[Correct! Black should continue in the same direction, preventing white from curling around to seal black into the corner (try Q15 on the previous move to see white's follow up). Click through the letters to see the rest of the joseki.]
;W[og]LB[ph:A]C[Extend for strength.]
;B[ph]LB[jc:A]C[Extend to prevent white from curling the shape up.]
;W[jc]C[White goes back to damage the N17 stone. Joseki complete.]
)(;B[pe]LB[pg:A]MA[rr]C[Incorrect! This is a bad move for black, allowing white to curl up black's shape.]
;W[pg]C[White's stones wrap around black, facing more of the board and prevent black from extending along the right side. Black can still cut, but this is a fight we could have avoided.]
))))(;W[od]C[B is very uncommon, but we should know the strongest response to it because this shape could appear anywhere on the board.]
(;B[oc]C[What should white's first instinct be when black attaches here?]
(;W[nc]C[Correct! White should hane, weakening black's stone and projecting strength along the side. How should black respond?]
;B[pc]TR[pp]C[Correct! Black should pull back, strengthening and connecting their stones. What should white's instinct be? Play at the triangle to see what happens if white plays away.]
(;W[nd]LB[qf:A]C[Correct! White should connect these stones to defend the cutting point! Click through the letters to see the rest of the joseki.]
;B[qf]LB[jc:B]LB[jd:A]C[Black extends to prevent being sealed into the corner.]
(;W[jc]C[White extends along the side to create a base and eyespace. Joseki complete.]
)(;W[jd]C[White extends along the side to create a base and eyespace. Joseki complete.]
))(;W[md]C[Good! White should defend the cut at O16. This is considered old fashioned and suboptimal these days. Go back a move and see if you can find the modern move.]
)(;W[pp]TR[nd]
;B[nd]MA[nc]MA[od]C[Here black will cut and because P17 was already strengthened with Q17 there is a double threat to capture either of white's stones!]
))(;W[pd]LB[pc:A]C[This move is possible but can be very dangerous because black will play at A to connect and it will be as if black already got to play the hane at the head of 2 stones with R16. This leads to a complicated joseki called the "avalanche" and we will not be investigating it in this study.]
;B[pc]TR[qd]C[Black tries to connect back with Q17 and now the R16 stone is in an ideal position.]
)(;W[nd]LB[nc:A]C[Incorrect. This move is not severe enough. While it keeps white strong, black can now play at A to make more territory while also strengthening the P17 stone. There is a better move for white. Go back one move and try to find it.]
))(;B[pd]C[This is a very uncommon move, but what should white's first instinct be when black bumps like this?]
(;W[oc]C[Correct! White should extend perpendicular to the bump to prevent black from playing a hane on one side. Which side you pick depends on the whole board position and location of other stones.]
)(;W[oe]C[Correct! White should extend perpendicular to the bump to prevent black from playing a hane on one side. Which side you pick depends on the whole board position and location of other stones.]
)(;W[pc]MA[oc]C[This hane is too dangerous! Black's stones are strong and by leaving a cutting point we are inviting them to split us apart!]
)(;W[pe]MA[oe]C[This hane is too dangerous! Black's stones are strong and by leaving a cutting point we are inviting them to split us apart!]
))(;B[pc]C[When black plays this diagonal ("kosumi") against white's stone what should white's first instinct be?]
(;W[oc]LB[pf:B]LB[qf:A]C[Correct! White should extend toward black's stone to block. Click through to see the continuation.]
(;B[pf]LB[kc:A]LB[kd:B]C[Black extends to prevent being sealed into the side.]
(;W[kd]C[White extends to make a base. Joseki complete.]
)(;W[kc]C[White extends to make a base. Joseki complete.]
))(;B[qf]LB[kc:B]LB[kd:A]C[Black extends to avoid being sealed into the corner.]
(;W[kd]C[White extends to make a base. Joseki complete.]
)(;W[kc]C[White extends to make a base. Joseki complete.]
)))(;W[pd]LB[oc:A]LB[qc:B]LB[qe:C]C[Incorrect. Black can now play at A, B, or C and the cut at R17 is not so dangerous because it is so close to the edge of the board. If black plays A black has an ideal shape with a "hane at the head of 2 stones".]
)(;W[pe]C[This move is playable as a "special case" move. One should consider this move only when there are external factors affecting their choice in this corner. What is black's most natural response?]
(;B[qe]C[Good! Black should extend toward white's stones, threatening to wrap around the outside.]
)(;B[oc]C[Good! Black should extend toward white's stones, threatening to wrap around the outside.]
)))))(;B[qc]LB[pd:A]C[3-3 "San-san"
There are several approach joseki involving the 3-3 point, but in this study we will only investigate the Q16 shoulder hit.]
;W[pd]C[What should black's first instinct be?]
;B[qd]C[Correct! Black should extend to damage white's stone and strengthen black's own. What should white's first instinct be now?]
(;W[pe]LB[ob:A]C[Correct! White should extend this way to keep the strength of the stones in balance. Click the letters to continue one common path in this joseki.]
;B[ob]LB[qe:A]C[Black slides along the side to undercut white and prevent being sealed into the corner.]
;W[qe]C[White turns to prevent black from further weakening white and to project strength along the side. Joseki complete.]
)(;W[pc]C[Incorrect! We have made our stones equal to black's stones, but it is black's turn! This is black's opportunity to seize the advantage: what should black's first instinct be?]
;B[pe]LB[oe:A]C[Correct! Hane at the head of 2 stones. Black has seized the initiative and curled white's shape up. Playing the hane back at A will be dangerous for white. Click through to see the continuation.]
;W[oe]LB[of:A]
;B[of]LB[ne:A]
;W[ne]LB[pf:A]
;B[pf]C[Black repairs his weaknesses. In this situation black has maintained control of the corner and is now projecting massive strength across the right side of the board. White's shape has weaknesses at the marked points due to the shortage of liberties and the cutting point that black may take advantage of later. This result is very good for black.]
)(;W[qe]C[Incorrect. Leaving the cutting point here is too dangerous. Black has already strengthened the stones in the corner so cutting will be advantageous for black.]
)))