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arimaa-viewer
File:Http://pds.exblog.jp/pds/1/201101/27/59/e0221359 194917100.jpg
Arimaa is forbidden
Animals out of control
hanzack food
Camel Book
LISP
some game
1g Ra1 Rb1 Cc1 Rd1 Ce1 Rf1 Rg1 Rh1 Ra2 Hb2 Mc2 Dd2 Ee2 Df2 Hg2 Rh2
1s ra7 mb7 rc7 ed7 he7 rf7 hg7 rh7 ra8 cb8 rc8 dd8 de8 rf8 cg8 rh8
2g "Silver setup deters EH attack on either wing; Gold probably wants lone-E attack or EMHR attack in west." Ee2n Ee3n Ee4n Ee5w "Reasonable to get the gold E towards an M or R pull as part of a lone-elephant attack, while constraining the silver E." [ 2g Ee2n Ee3n Ee4n Hg2n "The standard 2g only really threatens the h7 rabbit. The gold horse can't go to g6 without danger of being framed." ] 2s "Silver has no way to stop a R pull and is thus very anxious for counterplay." @xa6=A @xb6=A ed7s dd8s hg7s hg6s 3g "Gold has radically divergent strategies available." Hg2n Hb2n Mc2n Cc1n "Gold improves four pieces and asks Silver to commit." [ 3g Ed5w Ec5w Eb5n Hg2n "Gold can secure g3 and attack with his elephant, insuring at least a rabbit pull." 3s @xg2=B @xb6=A ed6s dd7s rc7e mb7e 4g Eb6w Ea6s ra7s Hb2n ] [ 3g Ed5e Ee5e hg5s Ef5e "Tactical point: double threat to silver horse and rabbit doesn't work." 3s @xg3=A @xf6=A ed6e ee6s ee5s ee4s 4g "Silver's setup with rabbits behind traps has disadvantages but allows races like this." @xf1=A Eg5n Eg6n rf7s Eg7w 4s ee3s Df2n ee2e hg4s ] 3s "When both camels are on the same wing, both elephants usually want to be there too." ed6w ec6s ec5s cg8s "Silver fears a swarm against c6, so he commits his elephant to stop it." 4g "Big question throughout the game: Which wing does gold M want to be on? Silver M is committed; Gold M may choose. " Mc3e Md3e Me3e Rd1w "Fourth step should consider Ce1n as well as the rabbit shift." 4s "The gold M is now opposite the silver HH. Silver has achieved nothing but asymmetry and tension." ec4e ed4e ee4e de8w "Building a phalanx on d7 is not strictly necessary; Cg7s is a useful alternative." [ 4s ec4e ed4e ee4e cg7s 5g "Gold gains nothing by invading d7." Ed5n dd7n Ed6n Mf3w 5s ef4w ee4w Me3n mb7s 6g rc7s Ed7w Ec7w Dd2n 6s Me4n ed4e rc8s mb6w ] 5g "Diagonally opposite camels tend to create sharp positions where tactical races must be calculated. " Hg3e Mf3e Ed5e Ee5e 5s "Now Gold has the most force in the east and Silver in the west, racing to improve, struggling to preserve elephant mobility." ef4e hg5n mb7s ra7s "Silver now voluntarily advances the R to support the M because the position will be tactical/racing, not strategic/R-pulling."
6g "Gold is unhappy to have neither H nor R threatened in the east." Mg3w Mf3w Ef5w Ce1n 6s "Gold will now have an easier time threatening the a-rabbit than before, so Silver must act fast to occupy gold E." @xa5=A eg4e eh4w Hh3n ra8s "Silver tries to create an elephant deadlock in the east despite a potential deficit of material, ergo swarm danger." [ 6s eg4w ef4w Me3w ee4s "Pushing M aside with eye to EH attack fails." 7g Md3n Md4e Me4e Ee5s ] [ 6s eg4s eg3s eg2n Rg1n "Pulling g1-rabbit puts silver elephant on a terrible square." 7g Ee5e Ef5e Eg5s Rf1e 7s @xg2=A Hh3n eg3e Hh4n eh3n 8g Eg4n Hh5n Hh6s rh7s ] 7g "Gold E can't now leave and abandon H." Me3w Md3w Ee5e Ce2n 7s "Same-side camels tend to create slow positions with rabbit pulls and hostages, i.e. no threats to take over an opposing trap. DLE." @xa5=A hg6e he7s he6e hf6e "Silver prepares a hostage basket on g5." 8g "A more committal Silver EHH setup would have put horses on g7 and h7 in anticipation of this position." @xh3=A @xg4=C Ef5e Eg5e Hh4s Eh5w 8s "The gold E in g5 slows down any Silver attack to a crawl, making Silver's eastern material advantage impotent." eg4w ef4w ee4e Ce3n 9g "Gold has no threat worth more than a cat, and must therefore defend." @xe3=A Eg5w Ef5w Ce4s Hh3w "The elephant clears g5, giving the silver HH room to advance." [ 9g Dd2n Dd3n Ce4s Dd4s "Defending the cat with small pieces is an ultimately futile attempt to keep the gold E on the nice g5 square." 9s ef4w ee4w ed4e Dd3n 10g Mc3n Dd4s Mc4s Ce3s [ 10g Eg5w hg6s hg5s Ef5e 10s Ce3w ee4s dd7s dd8s ] 10s ee4s Dd3n ee3w dd7s 11g Mc3n Dd4e De4s Mc4s 11s De3n ed3e De4n ee3n ] 9s "Silver must make something happen in the east before the a6-rabbit becomes a liability." ef4e hh6s hh5s hh4s 10g "Triple threat: rabbit pull, horse hostage, control g3." @xh1=A @xg2=A Rh2w Ce3s Mc3e Md3e "Only the gold camel can save the day." 10s "Suddenly silver doesn't want a hostage because it would invite a swarm." @xh2=A eg4w Hg3n hh3w ef4s "Occupying g3 with the silver horse despite the near gold camel is extremely sharp." [ 10s eg4w ef4w Me3w ee4s "Trying to keep away the gold camel to open the way for an EH attack fails again." 11g Md3n Md4e Me4e Ee5s ] 11g "Gold can't let his M be pushed west, or else the g3-horse gives Silver the clear positional upper hand." Dd2n Ee5s Hg4e Hh4s 11s "Dual phalanxes force the silver E to retreat." @xf1=C @xe2=C ef3n hg3n Rg2n rh8w "Pulling a rabbit to g3 is to keep the gold M out of g3 more than to threaten the rabbit, since an eastern gold swarm is possible." 12g "Unless Gold can persecute the over-bold silver horse, it will get away leaving Silver at least equal." Ee4n Ee5e Ef5e Hh3n 12s "The g4-horse is in grave danger of being passed off to the gold camel." @xg3=A ef4w ee4e Me3n mb6s 13g "Gold could trade three steps for one, but what is his one useful step? " Dd3e Me4w Md4w Mc4w "Defending the west with the gold M concedes too much in the east." [ 13g Dd3n Me4s Me3e Dd4e "Committing completely to taking H hostage with M leads into an extremely sharp position." 13s mb5s Hb3w mb4s dd7s 14g Ce2w Cd2n Rg3e Mf3e 14s dd6s dd5s Cd3s dd4s "The attack on c3 looks strong, but Silver's incipient swarm isn't close enough to make it work." [ 14s Ha3n mb3w ra6e rb6s "Taking hostage for hostage seems to balance the position" 15g Mg3w hg4s hg3s Mf3e "Completing the hostage plan." [ 15g Eg5w Ef5w Ee5w Ed5w "Giving up on a horse hostage to pursue the silver camel loses a dog; too much material" 15s Ha4e ma3n ma4n ma5n [ 15s hg4n hg5w Ha4e ma3n 16g Ec5s rb5n Hb4n Ec4w 16s De4n ef4w De5n hf5w 17g ma4s Eb4w Cc2n Cc3n 17s ee4w Cc4n ed4w dd6s 18g Mg3n Mg4n hg6e Mg5n 18s Cc5n dd5w De6n he5n ] 16g Mg3w hg4s hg3s Mf3e ] 15s Ha4n ma3n Ha5n ma4n 16g Eg5w Ef5w Ee5w Ed5w 16s Ha6e ma5n Hb6n ma6e ] 15g Eg5w Ef5w Ee5w Ed5s 15s mb3s Cc2n mb2e hg4n 16g Ha3e dd3e Ed4s Rb1n ] [ 13g Dd3n Me4s Hb3e Hc3e "Clearing the b3 horse seems to give Gold the advantage." 13s mb5e mc5e md5w Dd4n 14g Hd3n Dd5e De5s Hd4s ] 13s "Opposite camels could restore a rabbit-pulling game, but the g3-square is more important. Silver is now leading positionally." @xg2=A @xa5=A Rg3w hg4s dd7e mb5n 14g "Gold has three objectives: retake g3, keep the f3-rabbit alive, and pull the a6-rabbit" Hh4s Hb3w Ha3n Rc1e 14s @xg2=C ef4n Rf3n hg3s mb6s 15g "Gold is hard pressed not to lose R for no positional compensation." Eg5s Rf4w Ha4s Eg4w 15s "The Silver Hg2 isn't threating anything, but is strategically very annoying to Gold, because only the M can deal with it properly." ef5w ee5w Re4n mb5n 16g "The e5-rabbit is no longer worth saving." Hh3w Mb4s Ef4w Ee4w 16s Re5n ed5e Re6e de7s 17g Ha3n Ha4n Ha5s ra6s 17s "With the Gold camel on b3, it would be a nightmare for Silver to try to save the a5 rabbit." @xa4=A ee5s De3w ee4s dd8s 18g "Silver tries to force the gold E back to defending f3, so that the silver M can come to life again." @xf1=A Ha4s ra5s ra4e Ha3n "Gold sacrifices time and position in the east to clear the western silver R, also making the silver M vulnerable again." 18s "With Gold declining the elephant deadlock around f3, the race is on again!" @xb3=A Df2n hg2w Df3n hf2n 19g "Gold can't bear the loss of a dog with no attack to make up for it." @xf3=A Ed4e Df4e Ee4e Ra2n 19s "The Gold elephant has been forced back to f3 after all, allowing Silver to plot how to save the Rb4 or get compensation with M." hg6s hg5n Dg4n hf3s "Renewing threat to gold D keeps silver R alive one more turn." 20g "Gold elephant does not want to stay tied to defending f3. A swarm will come if he plays passively." @xg4=A Ef4n Dg5s Dg4w Rg1n 20s "Silver can no longer make a useful threat in the east, so the b4-rabbit is doomed." mb6s mb5w ma5e Ha4n 21g "The b4-rabbit uses its dying breath to protect the silver camel on a hostage-grabbing foray." Mb3s rb4s rb3e Mb2n 21s "With no rabbit protection, the silver camel isn't strong enough to single-handedly secure the horse hostage." Ha5n mb5w dd7s cb8s 22g Ef5w Ee5w Ed5w Ec5w 22s "Gold wisely stops the hostage-taking at the last minute; after the silver M is pulled away the gold H is strong for counterplay." hf2n Df4n hf3n hg6s "Silver secures at least a D for his camel hostage, with the potential to race depending on Gold's move." [ 22s hg6s hg5s Df4n hg4w "Chessandgo suggested the stronger move of committing to the race immediately." 23g Eb5n ma5e mb5s Eb6s [ 23g Hg3n Hg4n Df5w Ra3n 23s ee3n Dd3e De3e ee4s 24g Eb5e ma5e mb5s Ec5w 24s ee3w hf4n cg7s rh7s ] 23s ee3e ef3w Hg3w de6s 24g mb4e Eb5s mc4s Eb4e 24s Df5n hf4n de5s hf5s 25g Ec4e Dd3s Ce2s Rf1e 25s hf2s Rg2w Rf2n hf1n 26g de4n Ed4e hf4n Ee4e 26s rh7s rh6s rh5s rh4s ] 23g Eb5e ma5e Rf1n Ha6e 23s "Silver must now choose between a race and a safe capture of D for M hostage." hf4s Rf2s hf3s ra7s 24g "Gold can't now delay taking the M hostage or the a6-rabbit will free it." Ra3n Ra4n mb5s Ec5w 24s "The race is on! Silver will win material, three pieces for camel, but goal is more important and a5-rabbit is close." ee3e ef3w Hg3w rh7s "Note Silver's 4th step of rabbit to h6, bringing it within four steps of g3; it's critical to Silver winning the race." 25g "Camel capture is forced." mb4e Eb5s mc4s Eb4e 25s "Silver can maximize material by pulling D through f3 with E to f4, but that may lose the goal race!" rh6s rh5s rh4s rh3w 26g @xg0=C Ec4e Dd3s Rd1e Rf1e 26s "Whew! Gold can't race all out, must return with E. That gives Silver time to consolidate material advantage" ee3e Ce2n ef3n Ce3e 27g Mb3e Mc3e Md3e Me3s 27s "Gold camel makes yet another wing switch, slowing down both goal attacks." Df5n hg5w ef4w ee4s 28g hf2s Me2e Ed4e Ee4e 28s "Gold is poised to retake g3 with a rabbit, and the silver cat is not advanced enough to interfere." ee3e Mf2w ef3s cg7s 29g cb7n Hb6n rc7e Hb7e 29s cg6s hf5w he5w hd5w 30g "The silver horse arrives just in time. Piece alignments now favor Silver." Me2n Me3n Me4n Me5w 30s "The gold camel switches wings yet again, but this time the silver elephant will be able to afford to chase it." ef2n ef3w hf1n cb8s 31g "Silver has just enough defense to prevent goal and just enough attack to prevent capture." hc5s Md5w Dd2n Re1e 31s "Gold's goal attack could easily win a live game, but postally Silver has time to find the safe lines." Dd3w ee3w ra6e cb7w 32g "The game is now strategically over. Silver will consolidate and win barring blunder." Rb1n Rb2n Rf1w Ra5e 32s ed3n ed4n Mc5n ed5w 33g Dc3e Dd3e Re1n Ra1n 33s de6s dd6s Mc6e ec5n 34g Ef4w Ee4w hc4s Ed4w 34s hf2n hf3s De3e ca7s 35g Ec4e Ed4e Ee4e Rb3n 35s cg5n Md6e ec6e dd5w 36g Hc7w rc8s rb6e Hb7s 36s Rb5w dc5w rc6s rc7w 37g ca6n Hb6w ca7n Ha6n 37s ed6w Me6w ec6w Md6w 38g Ra2n Ra3n Ra5n Ra4n 38s rb7e eb6n Ra6e rd7s 39g Ef4e Eg4w rg3n Rg2n 39s "Retaking g3 earlier would have changed the nature of the race, but now it is meaningless." rd6s rd5s de5s de4s 40g Rh1n Rh2n Rh3n Cc2e 40s rd4s rc5s rc4s rc3w 41g Rh4n Rh5n Ef4n Ef5e 41s rb3s rb2s
some other game
1g Ra1 Rb1 Cc1 Rd1 Ce1 Rf1 Rg1 Rh1 Ra2 Hb2 Mc2 Dd2 Ee2 Df2 Hg2 Rh2 1s ra7 mb7 rc7 ed7 he7 rf7 hg7 rh7 ra8 cb8 rc8 dd8 de8 rf8 cg8 rh8 2g "Silver setup deters EH attack on either wing; Gold probably wants lone-E attack or EMHR attack in west." Ee2n Ee3n Ee4n Ee5w "Reasonable to get the gold E towards an M or R pull as part of a lone-elephant attack, while constraining the silver E." [ 2g Ee2n Ee3n Ee4n Hg2n "Standard opening only really targets h7 rabbit pull, not EH attack." ] 2s "Silver has no way to stop a R pull and is thus very anxious for counterplay." @xa6=A @xb6=A ed7s dd8s hg7s hg6s 3g "Gold has radically divergent strategic choices." Hg2n Hb2n Mc2n Cc1n "Gold improves four pieces and asks Silver to commit." [ 3g Ed5w Ec5w Eb5n Hg2n "Gold can secure g3 while insuring a western rabbit pull." 3s @xg2=B @xb6=A ed6s dd7s rc7e mb7e 4g Eb6w Ea6s ra7s Hb2n ] [ 3g Ed5e Ee5e hg5s Ef5e 3s ed6e ee6s ee5s ee4s ] 3s "When both camels are on the same wing, both elephants usually want to be there too." ed6w ec6s ec5s cg8s "Silver fears a swarm against c6." 4g "Big question throughout the game: Which wing does gold M want to be on? Silver M is committed; Gold M may choose. " Mc3e Md3e Me3e Rd1w "Fourth step should consider Ce1n as well as the rabbit shift." 4s "The gold M is now opposite the silver HH. Silver has achieved nothing but asymmetry and tension." ec4e ed4e ee4e de8w "Building a phalanx on d7 is not strictly necessary; Cg7s is a useful alternative." [ 4s ec4e ed4e ee4e cg7s 5g Ed5n dd7n Ed6n Mf3w 5s ef4w ee4w Me3n mb7s 6g rc7s Ed7w Ec7w Dd2n 6s Me4n ed4e rc8s mb6w ] 5g "Diagonally opposite camels tend to create sharp positions where tactical races must be calculated. " Hg3e Mf3e Ed5e Ee5e 5s "Now Gold has the advantage in the west and Silver in the east, racing to improve, struggling to preserve elephant mobility." ef4e hg5n mb7s ra7s 6g Mg3w Mf3w Ef5w Ce1n 6s "Gold will now have an easier time threatening the a-rabbit than before, so Silver must act fast to occupy gold E." @xa5=A eg4e eh4w Hh3n ra8s "Silver tries to create an elephant deadlock in the west despite a potential deficit of material, ergo swarm danger." [ 6s eg4w ef4w Me3w ee4s 7g Md3n Md4e Me4e Ee5s ] [ 6s eg4s eg3s eg2n Rg1n 7g Ee5e Ef5e Eg5s Rf1e 7s Hh3n eg3e Hh4n eh3n 8g Eg4n Hh5n Hh6s rh7s ] 7g "Gold E can't now leave and abandon H." Me3w Md3w Ee5e Ce2n 7s "Same-side camels tend to create slow positions with rabbit pulls and hostages, i.e. no threats to take over an opposing trap. DLE." @xa5=A hg6e he7s he6e hf6e "Silver prepares a hostage basket on c5." 8g @xh3=A @xg4=C Ef5e Eg5e Hh4s Eh5w 8s eg4w ef4w ee4e Ce3n 9g "Gold has no threat worth more than a cat, and must therefore defend." @xe3=A Eg5w Ef5w Ce4s Hh3w "The elephant clears g5, giving the silver HH room to advance." [ 9g Dd2n Dd3n Ce4s Dd4s 9s ef4w ee4w ed4e Dd3n 10g Mc3n Dd4s Mc4s Ce3s [ 10g Eg5w hg6s hg5s Ef5e 10s Ce3w ee4s dd7s dd8s ] 10s ee4s Dd3n ee3w dd7s 11g Mc3n Dd4e De4s Mc4s 11s De3n ed3e De4n ee3n ] 9s ef4e hh6s hh5s hh4s 10g @xh1=A @xg2=A Rh2w Ce3s Mc3e Md3e 10s @xh2=A eg4w Hg3n hh3w ef4s [ 10s eg4w ef4w Me3w ee4s 11g Md3n Md4e Me4e Ee5s ] 11g Dd2n Ee5s Hg4e Hh4s 11s "Dual phalanxes force the silver E to retreat." @xf1=C @xe2=C ef3n hg3n Rg2n rh8w 12g Ee4n Ee5e Ef5e Hh3n 12s @xg3=A ef4w ee4e Me3n mb6s 13g "Gold could trade three steps for one, but what is his one useful step? " Dd3e Me4w Md4w Mc4w "Defending the west with the gold M concedes too much in the east." [ 13g Dd3n Me4s Me3e Dd4e 13s mb5s Hb3w mb4s dd7s 14g Ce2w Cd2n Rg3e Mf3e 14s dd6s dd5s Cd3s dd4s [ 14s Ha3n mb3w ra6e rb6s 15g Mg3w hg4s hg3s Mf3e [ 15g Eg5w Ef5w Ee5w Ed5w 15s Ha4e ma3n ma4n ma5n [ 15s hg4n hg5w Ha4e ma3n 16g Ec5s rb5n Hb4n Ec4w 16s De4n ef4w De5n hf5w 17g ma4s Eb4w Cc2n Cc3n 17s ee4w Cc4n ed4w dd6s 18g Mg3n Mg4n hg6e Mg5n 18s Cc5n dd5w De6n he5n ] 16g Mg3w hg4s hg3s Mf3e ] 15s Ha4n ma3n Ha5n ma4n 16g Eg5w Ef5w Ee5w Ed5w 16s Ha6e ma5n Hb6n ma6e ] 15g Eg5w Ef5w Ee5w Ed5s 15s mb3s Cc2n mb2e hg4n 16g Ha3e dd3e Ed4s Rb1n ] [ 13g Dd3n Me4s Hb3e Hc3e 13s mb5e mc5e md5w Dd4n 14g Hd3n Dd5e De5s Hd4s ] 13s "Opposite camels could restore a rabbit-pulling game, but the g3-square is more important. Silver is now leading positionally." @xg2=A @xa5=A Rg3w hg4s dd7e mb5n 14g Hh4s Hb3w Ha3n Rc1e 14s @xg2=C ef4n Rf3n hg3s mb6s 15g "Gold is hand pressed not to lose R for no positional compensation." Eg5s Rf4w Ha4s Eg4w 15s ef5w ee5w Re4n mb5n 16g Hh3w Mb4s Ef4w Ee4w 16s Re5n ed5e Re6e de7s 17g Ha3n Ha4n Ha5s ra6s 17s "With the Gold camel on b3, it would be a nightmare to try to save the a5 rabbit." @xa4=A ee5s De3w ee4s dd8s 18g @xf1=A Ha4s ra5s ra4e Ha3n 18s Df2n hg2w Df3n hf2n 19g Ed4e Df4e Ee4e Ra2n 19s hg6s hg5n Dg4n hf3s 20g Ef4n Dg5s Dg4w Rg1n 20s mb6s mb5w ma5e Ha4n 21g Mb3s rb4s rb3e Mb2n 21s Ha5n mb5w dd7s cb8s 22g Ef5w Ee5w Ed5w Ec5w 22s hf2n Df4n hf3n hg6s [ 22s hg6s hg5s Df4n hg4w 23g Eb5n ma5e mb5s Eb6s [ 23g Hg3n Hg4n Df5w Ra3n 23s ee3n Dd3e De3e ee4s 24g Eb5e ma5e mb5s Ec5w 24s ee3w hf4n cg7s rh7s ] 23s ee3e ef3w Hg3w de6s 24g mb4e Eb5s mc4s Eb4e 24s Df5n hf4n de5s hf5s 25g Ec4e Dd3s Ce2s Rf1e 25s hf2s Rg2w Rf2n hf1n 26g de4n Ed4e hf4n Ee4e 26s rh7s rh6s rh5s rh4s ] 23g Eb5e ma5e Rf1n Ha6e 23s hf4s Rf2s hf3s ra7s 24g Ra3n Ra4n mb5s Ec5w 24s ee3e ef3w Hg3w rh7s 25g mb4e Eb5s mc4s Eb4e 25s rh6s rh5s rh4s rh3w 26g Ec4e Dd3s Rd1e Rf1e 26s ee3e Ce2n ef3n Ce3e 27g Mb3e Mc3e Md3e Me3s 27s Df5n hg5w ef4w ee4s 28g hf2s Me2e Ed4e Ee4e 28s ee3e Mf2w ef3s cg7s 29g cb7n Hb6n rc7e Hb7e 29s cg6s hf5w he5w hd5w 30g Me2n Me3n Me4n Me5w 30s ef2n ef3w hf1n cb8s 31g hc5s Md5w Dd2n Re1e 31s Dd3w ee3w ra6e cb7w 32g Rb1n Rb2n Rf1w Ra5e 32s ed3n ed4n Mc5n ed5w 33g Dc3e Dd3e Re1n Ra1n 33s de6s dd6s Mc6e ec5n 34g Ef4w Ee4w hc4s Ed4w 34s hf2n hf3s De3e ca7s 35g Ec4e Ed4e Ee4e Rb3n 35s cg5n Md6e ec6e dd5w 36g Hc7w rc8s rb6e Hb7s 36s Rb5w dc5w rc6s rc7w 37g ca6n Hb6w ca7n Ha6n 37s ed6w Me6w ec6w Md6w 38g Ra2n Ra3n Ra5n Ra4n 38s rb7e eb6n Ra6e rd7s 39g Ef4e Eg4w rg3n Rg2n 39s rd6s rd5s de5s de4s 40g Rh1n Rh2n Rh3n Cc2e 40s rd4s rc5s rc4s rc3w 41g Rh4n Rh5n Ef4n Ef5e 41s rb3s rb2s





