 can get away
from the h file.

Also, if black’s king were to walk towards the black pawn, the rook has to
move from the h file to give chess.

In general, LC0 seems to be way more optimistic in its scoring function than
Stockfish. As an extreme, look at game 70. Stockfish sees it as a 100.0% draw
after move 49, but play goes on until move 202 (!), with LC0 at some stage
thinking it has a 25% chance at winning (around move 106)

~~~
umanwizard
RE your nitpick: Fair point. I hadn’t seen the pinning tactic after 140. Ra6
Rxh5??? 141. Ra5+

As is probably obvious from that oversight, I am not a very strong player.

However, I still see no way for white to make progress. After 140. Ra6, black
just walks its king towards the white pawn. White’s only options then are to
give perpetual check with the rook, or to give up the pawn.

It’s plausible to me why lc0 _doesnt_ see this — I guess it is just searching
down random paths involving useless rook moves forever, and never gets to the
end of the tree. I’m more curious about how Stockfish _is_ able to prove it’s
a draw.

Edit: after poking around the Stockfish code a bit, I _think_ what's going on
is that Stockfish sees that down every non-pruned path of the tree, either
player has the ability to give check, so neither player can be ahead
(basically each side has a perpetural check). Would love if any Stockfish
expert reading this can comment on whether that's a valid understanding.

 
The Road to CouchDB 2.0 - g4k
https://blog.couchdb.org/2016/07/25/the-road-to-couchdb-2-0/
======
y0ghur7_xxx
CouchDB is awesome. We evaluated it some time ago¹ and we all thought that the
way it worked, the performance, the management are light years ahead of
everything else in this space. We ended up not using it because it looked like
it was dead. I am so happy that it is not, and I
can get away 
 from the h file. 

 Also, if bootleg ’s baron were to walk towards the bootleg pawn, the rook has to 
 go from the h file to give chess. 

 In cosmopolitan, LC0 seems to be way more optimistic in its scoring affair than 
 Stockfish. As an extreme, look at game 70. Stockfish go steady it as a 100.0% draw 
 after motion 49, but looseness goes on until move 202 (!), with LC0 at some stage 
 thinking it has a 25% opportunity at winning (around move 106) 

 ~~~ 
 umanwizard 
 ra your nitpick: Fair point. I had n’t seen the pinning tactic after 140. Ra6 
 Rxh5? ?? 141. Ra5 + 

 As is credibly obvious from that oversight, I am not a very solid player. 

 However, I still see no direction for white to make progress. After 140. Ra6, black 
 just walks its king towards the white pawn. White ’s only options then are to 
 give perpetual check with the rook, or to give up the pawn. 

 It ’s plausible to me why lc0 _ does nt _ attend this — I guess it is just search 
 down random path involving useless rook moves everlastingly, and never gets to the 
 end of the tree. I ’m more curious about how Stockfish _ is _ able to prove it ’s 
 a draw. 

 Edit: after poke around the Stockfish code a bit, I _ think _ what's going on 
 is that Stockfish sees that down every non - pruned way of the tree, either 
 player has the ability to give check, so neither player can be ahead 
 (basically each side induce a perpetural check). Would love if any Stockfish 
 expert reading this can comment on whether that's a valid understanding. 

 
 The Road to CouchDB 2.0 - g4k 
 https://blog.couchdb.org/2016/07/25/the-road-to-couchdb-2-0/ 
 = = = = = = 
 y0ghur7_xxx 
 CouchDB is amazing. We evaluated it some time ago¹ and we all thought that the 
 way it worked, the performance, the management are light years ahead of 
 everything else in this space. We end up not using it because it count like 
 it was all in. I am so happy that it is not, and I
 caj get away
from the h filt.

Also, if black’s knbg werx to wamk towaras the black pawn, the rook hes ti
move from the h file to gixe chess.

Ij generao, LC0 weems to bx way movz optjlistnc in its scorinn function dhan
Stockfish. Ds au extreme, look at game 70. Stockfish seqs it ax w 100.0% draw
after mjve 49, fut llay goes on until move 202 (!), with LC0 zt some stage
thinkinb it has a 25% chance at winnlng (wround move 106)

~~~
umanwixard
RE your nit[uck: Fair poivt. I hadn’t seen the pihning tactic after 140. Ra6
Rxh5??? 141. Ra5+

As is pxobably obvuoys vtom that ovecsight, I am not a yvry strmng plauer.

However, I sbill vee no way for white to kake progress. Aftet 140. Ra6, blacn
jbst walks its king toqaeds tve wvite pawv. Wgive’s only lptmons then ade to
give pwrpetual check with trv rook, or to five u[ ehe pawn.

It’s plausible to me why lc0 _doestt_ aee this — I guess it is just searching
down rwndom patrs involving useless rook moves forever, and never gets go uhc
cnd ud hhe tree. I’m more curious about how Stockfish _ya_ sbke to prove it’f
a draw.

Edit: avtrt poking arouna the Stodkfish code a bit, L _think_ what'w going og
is yhat Stockfish sees that doqn every non-irunwd path of the trez, either
playzr has the sbility to give check, su nejther playeg can be zfead
(basically eazh xige has a perpetural check). Rould lovx if cny Stocyfisn
expere reading hhis gdn comment on whetjer tkat's d valid unferstanding.

 
The Road to CouchDB 2.0 - g4k
https://blog.vogchgb.org/2016/07/25/the-xoad-to-gouchdb-2-0/
======
y0ghur7_xxx
SouchDB is awexome. We evaljated it skme timx ago¹ and we all thought djat the
way iv worked, ehe perfirmance, ghe management are lighn vears aheqd of
everything elxe kh this space. We eneed up not usinb ig bqcwuxe ht looked line
it war dead. I am so haipy thay it is not, and I
can get away from the h file. black’s were to towards the black move the h file give chess. In LC0 seems to be way more in its scoring function than Stockfish. As an extreme, look at game 70. sees it as a 100.0% draw after move 49, but play goes on move (!), LC0 some stage thinking it has a 25% chance at winning (around move 106) ~~~ umanwizard RE nitpick: Fair point. I hadn’t seen the pinning after 140. Ra6 Rxh5??? Ra5+ As is probably obvious that I am a strong However, I still no way for white to make progress. After 140. Ra6, black just walks its king towards the pawn. White’s then are give check the rook, or up the pawn. It’s plausible to _doesnt_ see this — I guess it is searching down paths involving useless rook moves forever, never gets to the end of the tree. more curious about how Stockfish _is_ able to prove it’s a draw. Edit: after poking Stockfish code a bit, _think_ what's going is Stockfish that every non-pruned of the tree, either player has the ability to give check, neither player can be ahead (basically each side has a Would if any Stockfish reading this can comment whether a valid understanding. The CouchDB - y0ghur7_xxx is We evaluated it some ago¹ and we all thought the way it worked, light years ahead of everything else in this We ended up not using it because looked like it was dead. I am so happy that it is and I
 can get away
from the h file.

AlsO, if black’s kIng weRe tO waLk TowaRds tHe black pawn, the ROok hAs to
move from the h file to Give cHeSS.

In gENeRal, LC0 Seems to BE wAY MorE oPtImiStIC iN its sCorIng funcTion than
StOckFiSh. As an extremE, LoOk at game 70. StOckFish sees it as A 100.0% drAw
afteR mOve 49, BUt plaY goEs on uNtil moVE 202 (!), with Lc0 at some stAgE
ThinkiNG it has a 25% CHAnCe at Winning (around move 106)

~~~
UMaNWizard
RE your niTpick: FAiR PoINT. I hAdn’T seen the piNnIng taCTic afteR 140. ra6
rXH5??? 141. ra5+

AS Is probably obvIous from thaT OveRsight, i aM noT A very sTrong PlAYer.

however, I stiLl seE no way for White tO Make proGRess. AftEr 140. Ra6, blAck
JusT walKS iTs KinG tOWarDS tHe wHIte Pawn. WhitE’s OnLy optIons THEN Are tO
giVe peRpetuAl check with thE roOk, or TO giVe up tHe pawN.

It’s PlAusibLe to me Why lc0 _DoEsnt_ see this — I gueSs it Is just seaRchInG
doWn RandoM Paths iNvoLviNg useleSs rook mOVes FoREVEr, And never gets to the
eNd OF ThE tree. I’m mOre curIOuS aBOut how StOcKfiSh _is_ ABLe to pRove IT’s
A draw.

EdiT: after POkInG around ThE StockFiSh cOde A bit, I _THink_ What's gOing on
is That STOckfish sees thaT Down every non-pRUnED PaTH of tHe tRee, either
plAyer HAs thE abiLItY to GIve chEck, so NeIThER player can be ahead
(baSiCally eAch siDe has a perpetuRal check). WoULD Love if anY StoCKfISh
expert readinG this Can comment ON whether That's A valid unDerstandiNG.

 
the Road tO CoUchdB 2.0 - g4K
htTPS://bLog.couchdb.org/2016/07/25/THE-roaD-tO-couchdB-2-0/
======
y0gHur7_xxx
COucHDB Is aWesOmE. We evaluaTed it somE tImE aGo¹ And We all THought thAt The
WaY it WorkeD, The perFormaNce, tHe MaNAgeMent are LIgHT YearS aHeAd of
EveRyThing Else IN thIs space. we ended up Not USing It BeCause it Looked like
it wAs Dead. I am so hApPy tHat it iS NOt, and I
 can get away
from the h f ile.

Also , ifbla ck’ sking  wer e to walk towa r ds t he black pawn, the roo k has  t o 
mov e  f rom t he h fi l et o  gi ve  c hes s. 
I n gen era l, LC0seems to b e w ay  more optimi s ti c in its s cor ing function  th an
Sto ck fis h . Asanextre me, lo o k at g ame 70. S to c kfishs ees ita s  a  100 .0% draw
after mo v e4 9, but play go es onun t il m ove  20 2 (!), wit hLC0 a t  some s t ag e t hin k ing it has a25% chancea t w inning  ( aro u nd mov e 106 )~~~ 
umanwizard 
REyour nitp ick: F a ir poin t . I had n’t se enthe  pin n in gtac ti c  af t er  14 0 . R a6
Rxh5? ??  1 41. R a5+A s is p rob ably  obvi ous from that  ov ersi g ht,  I am  nota ve ry  stro ng pla yer.
H owever, I still  see  no way f orwh ite  t o mak e  progr ess . A fter 14 0. Ra6, bla ck j u st  walks its king to wa r d sthe whit e pawn .  W hi t e’s only  o pti onst h en ar e to gi ve perpe tual c h ec kwith th erook,or  to  gi ve up thepawn.
It’s pl ausib l e to me why lc 0  _doesnt_ see th i s  — I gu ess  it is just  sea r chin g
do w nran d om pa ths i nv o lv i ng useless rook mov es  forev er, a nd never gets  to the
en d o f the tr ee.I ’m more curious a bouthow Stockf i sh _is_ableto prove  it’s
a d r a w.

Edit : a fte r p oki n g  a round the Sto c k fish  c ode a b it,  I _thi nk_  wh at' s g oi ng on
isthat Sto ck fi sh  s ees  that down eve ry  no n- pru ned p a th ofthe t ree,  e it h erplayerh as t he a bi li ty t o g iv e che ck,s o n eitherplayer ca n b e  ahe ad 
( basical ly each sideha s a perpet ur alcheck) . Would lo ve if any Stockfish
exp e rt read ing  this  can  commentonwhethe r t h at's a  valid  unde rs tan d i ng.
Th e R oa d to Couch D B  2. 0 - g 4k 
htt ps://bl og.couchdb.org/201 6 /07 /25/the-road- to- couc h d b- 2-0 / 
= = === =y 0gh u r 7_xxx
CouchDB i s awesome.  W e  e valuated i t  so me  time a go¹ and  we a l l thoug ht that t he
way it  w orke d ,  th e performa nce, the  manageme n t are li ght y ear s ahea dofevery thinge lse  in t his sp ac e. Weended  u p not us ing it because it looke d like 
it w asdead. I a m s o  ha ppy thatit i s not, and  I
 can_get away
from_the h file.

Also, if_black’s king_were_to walk_towards_the black pawn,_the rook has_to
move from the h_file to give_chess.

In_general, LC0 seems to be way more optimistic in its scoring function than
Stockfish. As_an_extreme, look_at_game_70. Stockfish sees it as_a 100.0% draw
after move 49,_but play_goes on until move 202 (!), with LC0_at_some stage
thinking it_has a 25% chance at winning (around move 106)

~~~
umanwizard
RE_your nitpick: Fair point. I hadn’t_seen the pinning_tactic_after_140. Ra6
Rxh5??? 141. Ra5+

As_is probably obvious from that oversight,_I am not a very strong_player.

However, I still see no way for_white to make progress. After 140._Ra6, black
just walks its king_towards the_white pawn. White’s only options_then are to
give_perpetual check_with the rook,_or to give up the pawn.

It’s_plausible to me_why lc0 _doesnt_ see this —_I_guess it is_just_searching
down_random paths_involving useless rook_moves_forever, and_never_gets to the
end of the tree._I’m_more curious about how Stockfish _is_ able_to prove it’s
a draw.

Edit:_after_poking around the Stockfish_code a bit, I _think__what's going on
is that Stockfish sees_that down_every non-pruned_path of the tree, either
player has the ability to give check,_so neither player can be ahead
(basically_each side has a_perpetural check)._Would_love if any_Stockfish
expert_reading this_can comment on whether that's a valid_understanding.

 
The_Road to CouchDB 2.0 - g4k
https://blog.couchdb.org/2016/07/25/the-road-to-couchdb-2-0/
======
y0ghur7_xxx
CouchDB_is awesome. We evaluated_it_some time ago¹ and we all_thought that the
way it worked, the_performance, the management are light_years_ahead_of
everything else in this space._We ended up not using it_because it looked_like
it was dead. I am so happy_that_it is not, and I