From Pastmaker at aol.com Wed Apr 1 23:40:25 2009 From: Pastmaker at aol.com (Pastmaker at aol.com) Date: Wed, 1 Apr 2009 23:40:25 EDT Subject: [Retros] Probleemblad 1-2009 Message-ID: Dear friends, The progenitor of these compositions, I think, is the extraordianry 1922 Breyer composition (the original 50-move draw composition), a Rubik's Cube-like position of such complexity that it was erroneously thought sound for decades, was recognized to be unsound as a 50-move position in the 1960s, and needed computer work by Gerd Wilts in the 1990s (amended yet again by further computer work by Pascal Wassong, if I remember correctly) to finally be adjusted to soundness, all with only very small modifications to the original presentation. In other words, the computer-corrected position looks a whole lot like the original 1922 position. For those even slightlyh familiar with the Uncle Remus stories retold by Joel Chandler Harris, the phrase "Breyer Patch" (from Chandle's "briar patch") is almost irresistible as a description of these problems. There are wonderful examples by Wassong (the magnificent "Dedicated to Babette" problem, which, with a little modification by Wilts that probably exalts the task to the detriment of artistic merit in the original), represented for some time (and may still represent, I don't know) a record for determined last moves, and by Borodatov (1995, I think, with 50-move draw effect). Goldsteen's (and Rol's?, forgive me Guus for not remembering clearly) well-known "New Beehive" is a superb example as well. Regards to all, Tom Volet ************** Feeling the pinch at the grocery store? Make dinner for $10 or less. (http://food.aol.com/frugal-feasts?ncid=emlcntusfood00000001) -------------- next part -------------- An HTML attachment was scrubbed... URL: From Pastmaker at aol.com Wed Apr 1 23:49:12 2009 From: Pastmaker at aol.com (Pastmaker at aol.com) Date: Wed, 1 Apr 2009 23:49:12 EDT Subject: [Retros] Probleemblad 1-2009 Message-ID: The post-Wilts computer work may have been by Thierry de Gleuher. My apologies for writing without notes. ************** Feeling the pinch at the grocery store? Make dinner for $10 or less. (http://food.aol.com/frugal-feasts?ncid=emlcntusfood00000001) -------------- next part -------------- An HTML attachment was scrubbed... URL: From G.A.Rol at umcutrecht.nl Thu Apr 2 05:23:44 2009 From: G.A.Rol at umcutrecht.nl (Rol, Guus) Date: Thu, 2 Apr 2009 11:23:44 +0200 Subject: [Retros] Probleemblad 1-2009 In-Reply-To: References: Message-ID: The "new beehive" was one of my early attempts and Harry Goldsteen progressed quite a bit from that point. He himself refers to these heavy structures unpoetically as "closets" which he divides into hardware (the unmoving containing structure) and software (the flexible units inside). He has done extensive systematic research on different software configurations within almost identical hardware setups. I've seen the stack that overflowed his shoebox and upcoming issues of Probleemblad will present more of this work. I am always in favor of honoring forerunners so "Breyer patch" seems quite an attractive suggestion to me. Regards, Guus Rol ________________________________ Van: retros-bounces at janko.at [mailto:retros-bounces at janko.at] Namens Pastmaker at aol.com Verzonden: donderdag 2 april 2009 5:40 Aan: retros at janko.at; andrew at anselan.com CC: thomasv at mosessinger.com Onderwerp: Re: [Retros] Probleemblad 1-2009 Dear friends, The progenitor of these compositions, I think, is the extraordianry 1922 Breyer composition (the original 50-move draw composition), a Rubik's Cube-like position of such complexity that it was erroneously thought sound for decades, was recognized to be unsound as a 50-move position in the 1960s, and needed computer work by Gerd Wilts in the 1990s (amended yet again by further computer work by Pascal Wassong, if I remember correctly) to finally be adjusted to soundness, all with only very small modifications to the original presentation. In other words, the computer-corrected position looks a whole lot like the original 1922 position. For those even slightlyh familiar with the Uncle Remus stories retold by Joel Chandler Harris, the phrase "Breyer Patch" (from Chandle's "briar patch") is almost irresistible as a description of these problems. There are wonderful examples by Wassong (the magnificent "Dedicated to Babette" problem, which, with a little modification by Wilts that probably exalts the task to the detriment of artistic merit in the original), represented for some time (and may still represent, I don't know) a record for determined last moves, and by Borodatov (1995, I think, with 50-move draw effect). Goldsteen's (and Rol's?, forgive me Guus for not remembering clearly) well-known "New Beehive" is a superb example as well. Regards to all, Tom Volet ************** Feeling the pinch at the grocery store? Make dinner for $10 or less. (http://food.aol.com/frugal-feasts?ncid=emlcntusfood00000001) -------------- next part -------------- An HTML attachment was scrubbed... URL: From pastmaker at aol.com Thu Apr 2 11:36:54 2009 From: pastmaker at aol.com (pastmaker at aol.com) Date: Thu, 02 Apr 2009 11:36:54 -0400 Subject: [Retros] Probleemblad 1-2009 In-Reply-To: References: Message-ID: <8CB81BFFBB520FA-B30-1FC@WEBMAIL-DG11.sim.aol.com> The database has the original Breyer as number P0002189, I believe: [KB6/QpN1p2p/rRpkP3/1Rp1p3/bqP5/brP5/pPP5/NB6 (13, 13) Who wins?] 180 Chess Amateur 2/1922.? The great retroanalyst T.R. Dawson had the following comment (copied from the server): "The wonderful No. 180, certainly the most glorious retro I have had the privilege of yet printing, is sent me by the Budapest Circle. Composed during the war, it's dedication shows that chess could rise supremely over all the turmoil. Its talented composers's death was announced only a few days ago, at a tragically early age. So that no solver shall miss the idea, I state distinctly that the retro analysis proves the game is DRAWN by virtue of the 50-move Rule! ... This beautiful application of the well-known zig-zag puzzles to a retro study has played havoc with the solving list." The problem was unsound in that there were alternatives that came in slightly under? 50 moves, but who cares.? The idea and the execution, presented so early in the history of the discipline, would have been?remarkable even if the stipulation had been "fewest single moves since last P-move or capture" (without 50 move draw implications). It was corrected by Gerd Wilts (#P0000228 on the server, i think), the correction constituted by adjusting the placement of three of the 26 units: (1) WRb6 to a5, and (2) exchange original positions of WRb5 and BQb4 (so that the BQ is on b5 and the WR on b4).? As corrected, Gerd's stipulation asks for the last 96 single moves. I have no confidence whatsoever in lists of "best" problems, or "masterworks".? But Breyer's composition seems to me to represent?particularly large leap in the development of retroanalysis.? Regards, Tom -----Original Message----- From: Rol, Guus To: The Retrograde Analysis Mailing List Sent: Thu, 2 Apr 2009 5:23 am Subject: Re: [Retros] Probleemblad 1-2009 The "new beehive" was one of my early attempts and Harry Goldsteen progressed quite a bit from that point. He himself?refers to these heavy?structures unpoetically?as "closets" which he divides into hardware (the unmoving containing structure) and software (the flexible units inside). He has?done extensive?systematic research on different software configurations within almost identical hardware setups. I've seen the stack that overflowed his shoebox and upcoming issues of Probleemblad will present more of this work. I am always in favor of honoring forerunners?so "Breyer patch" seems quite an attractive suggestion to me. ? Regards, Guus Rol Van: retros-bounces at janko.at [mailto:retros-bounces at janko.at] Namens Pastmaker at aol.com Verzonden: donderdag 2 april 2009 5:40 Aan: retros at janko.at; andrew at anselan.com CC: thomasv at mosessinger.com Onderwerp: Re: [Retros] Probleemblad 1-2009 Dear friends, The progenitor of these compositions, I think, is the extraordianry 1922 Breyer composition (the original 50-move draw composition), a Rubik's Cube-like position of such complexity that it was erroneously thought sound for decades, was recognized to be unsound as a 50-move position in the 1960s, and needed computer work by Gerd Wilts in the 1990s (amended yet again by further computer work by Pascal Wassong, if I remember correctly) to finally be adjusted to soundness, all with only very small modifications to the original presentation.? In other words, the computer-corrected position looks a whole lot like the original 1922 position. For those even slightlyh familiar with the Uncle Remus stories retold by Joel Chandler Harris, the phrase "Breyer Patch" (from Chandle's "briar patch") is almost irresistible as a description of these problems. There are wonderful examples by Wassong (the magnificent "Dedicated to Babette" problem, which, with a little modification by Wilts that probably exalts the task to the detriment of artistic merit in the original), represented for some time (and may still represent, I don't know) a record for determined last moves, and by Borodatov (1995, I think, with 50-move draw effect).? Goldsteen's (and Rol's?, forgive me Guus for not remembering clearly) well-known "New Beehive" is a superb example as well. Regards to all, Tom Volet ************** Feeling the pinch at the grocery store? Make dinner for $10 or less. 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Customer Service Department, 33 East Minor Street, Emmaus, PA 18098 Copyright, Men's Health From liskov at im.bas-net.by Fri Apr 10 08:14:50 2009 From: liskov at im.bas-net.by (Valery Liskovets) Date: Fri, 10 Apr 2009 15:14:50 +0300 Subject: [Retros] International Chess Composition Union Message-ID: <49DF383A.6DE75749@im.bas-net.by> http://www.saunalahti.fi/~stniekat/pccc/iccu.htm -------------- next part -------------- An HTML attachment was scrubbed... URL: From joost at sanguis.xs4all.nl Thu Apr 23 15:35:17 2009 From: joost at sanguis.xs4all.nl (Joost de Heer) Date: Thu, 23 Apr 2009 21:35:17 +0200 Subject: [Retros] Die Schwalbe Heft 236, april 2009 Message-ID: <49F0C2F5.3070201@sanguis.xs4all.nl> 14060 - Andrei Frolkin Dedicated to D. Baibikov R2kBQRK/PPpNppr1/brp3P1/1p4p1/1p2P3/P5b1/2P2PP1/8 (14+12) +---+---+---+---+---+---+---+---+ | R | . | |*K | B | Q | R | K | +---+---+---+---+---+---+---+---+ | P | P |*P | N |*P |*P |*R | | +---+---+---+---+---+---+---+---+ |*B |*R |*P | . | | . | P | . | +---+---+---+---+---+---+---+---+ | . |*P | . | | . | |*P | | +---+---+---+---+---+---+---+---+ | |*P | | . | P | . | | . | +---+---+---+---+---+---+---+---+ | P | | . | | . | |*B | | +---+---+---+---+---+---+---+---+ | | . | P | . | | P | P | . | +---+---+---+---+---+---+---+---+ | . | | . | | . | | . | | +---+---+---+---+---+---+---+---+ Release the position 14061 - Klaus Wenda Dedicated to G. Weeth Q1bk1n2/1n3p2/8/2B3P1/r7/2p5/P1p1PK1P/2r4q (7+10) +---+---+---+---+---+---+---+---+ | Q | . |*B |*K | |*N | | . | +---+---+---+---+---+---+---+---+ | . |*N | . | | . |*P | . | | +---+---+---+---+---+---+---+---+ | | . | | . | | . | | . | +---+---+---+---+---+---+---+---+ | . | | B | | . | | P | | +---+---+---+---+---+---+---+---+ |*R | . | | . | | . | | . | +---+---+---+---+---+---+---+---+ | . | |*P | | . | | . | | +---+---+---+---+---+---+---+---+ | P | . |*P | . | P | K | | P | +---+---+---+---+---+---+---+---+ | . | |*R | | . | | . |*Q | +---+---+---+---+---+---+---+---+ -16 & #1 (Proca retractor, anticirce) 14062 - Werner Keym Dedicated to V. Liskovets r3k2r/rpp1p1p1/N1p1P1p1/4P2N/4P1Q1/4P3/1P4PB/R3K2R (13+10) +---+---+---+---+---+---+---+---+ |*R | . | | . |*K | . | |*R | +---+---+---+---+---+---+---+---+ |*R |*P |*P | |*P | |*P | | +---+---+---+---+---+---+---+---+ | N | . |*P | . | P | . |*P | . | +---+---+---+---+---+---+---+---+ | . | | . | | P | | . | N | +---+---+---+---+---+---+---+---+ | | . | | . | P | . | Q | . | +---+---+---+---+---+---+---+---+ | . | | . | | P | | . | | +---+---+---+---+---+---+---+---+ | | P | | . | | . | P | B | +---+---+---+---+---+---+---+---+ | R | | . | | K | | . | R | +---+---+---+---+---+---+---+---+ Can white mate in 3? 14063 - Bernd Gr?frath Dedicated to Cedric Lytton's 70th birthday rnb2rk1/ppp1nppp/3bp3/8/3p4/4PP2/qPPP2PP/2KR1R2 (10+16) +---+---+---+---+---+---+---+---+ |*R |*N |*B | . | |*R |*K | . | +---+---+---+---+---+---+---+---+ |*P |*P |*P | |*N |*P |*P |*P | +---+---+---+---+---+---+---+---+ | | . | |*B |*P | . | | . | +---+---+---+---+---+---+---+---+ | . | | . | | . | | . | | +---+---+---+---+---+---+---+---+ | | . | |*P | | . | | . | +---+---+---+---+---+---+---+---+ | . | | . | | P | P | . | | +---+---+---+---+---+---+---+---+ |*Q | P | P | P | | . | P | P | +---+---+---+---+---+---+---+---+ | . | | K | R | . | R | . | | +---+---+---+---+---+---+---+---+ SPG 12.0 14064 - Nicolas Dupont Dedicated to Thierry le Gleuher rnbqkbnr/1p2ppP1/1P6/2Q5/1P2KP2/1P3PB1/4NP2/NR4RB (15+11) +---+---+---+---+---+---+---+---+ |*R |*N |*B |*Q |*K |*B |*N |*R | +---+---+---+---+---+---+---+---+ | . |*P | . | |*P |*P | P | | +---+---+---+---+---+---+---+---+ | | P | | . | | . | | . | +---+---+---+---+---+---+---+---+ | . | | Q | | . | | . | | +---+---+---+---+---+---+---+---+ | | P | | . | K | P | | . | +---+---+---+---+---+---+---+---+ | . | P | . | | . | P | B | | +---+---+---+---+---+---+---+---+ | | . | | . | N | P | | . | +---+---+---+---+---+---+---+---+ | N | R | . | | . | | R | B | +---+---+---+---+---+---+---+---+ SPG 27.0 14065 - Bernd Gr?frath r1bq1rk1/ppppp2p/8/6pQ/4P3/8/PPPPNPPP/RNB2RK1 (15+12) +---+---+---+---+---+---+---+---+ |*R | . |*B |*Q | |*R |*K | . | +---+---+---+---+---+---+---+---+ |*P |*P |*P |*P |*P | | . |*P | +---+---+---+---+---+---+---+---+ | | . | | . | | . | | . | +---+---+---+---+---+---+---+---+ | . | | . | | . | |*P | Q | +---+---+---+---+---+---+---+---+ | | . | | . | P | . | | . | +---+---+---+---+---+---+---+---+ | . | | . | | . | | . | | +---+---+---+---+---+---+---+---+ | P | P | P | P | N | P | P | P | +---+---+---+---+---+---+---+---+ | R | N | B | | . | R | K | | +---+---+---+---+---+---+---+---+ SPG 8.5, maximum 14066 - Dragan Petrovic 3kN1N1/1pRB2PP/ppRQPBPb/2prPPnq/3ppKpp/7P/7P/8 (16+13) +---+---+---+---+---+---+---+---+ | | . | |*K | N | . | N | . | +---+---+---+---+---+---+---+---+ | . |*P | R | B | . | | P | P | +---+---+---+---+---+---+---+---+ |*P |*P | R | Q | P | B | P |*B | +---+---+---+---+---+---+---+---+ | . | |*P |*R | P | P |*N |*Q | +---+---+---+---+---+---+---+---+ | | . | |*P |*P | K |*P |*P | +---+---+---+---+---+---+---+---+ | . | | . | | . | | . | P | +---+---+---+---+---+---+---+---+ | | . | | . | | . | | P | +---+---+---+---+---+---+---+---+ | . | | . | | . | | . | | +---+---+---+---+---+---+---+---+ Shortest resolution? Circe 14067 - Ravi Shankar 2kr1NK1/7p/8/8/8/3p4/8/8 (2+4) +---+---+---+---+---+---+---+---+ | | . |*K |*R | | N | K | . | +---+---+---+---+---+---+---+---+ | . | | . | | . | | . |*P | +---+---+---+---+---+---+---+---+ | | . | | . | | . | | . | +---+---+---+---+---+---+---+---+ | . | | . | | . | | . | | +---+---+---+---+---+---+---+---+ | | . | | . | | . | | . | +---+---+---+---+---+---+---+---+ | . | | . |*P | . | | . | | +---+---+---+---+---+---+---+---+ | | . | | . | | . | | . | +---+---+---+---+---+---+---+---+ | . | | . | | . | | . | | +---+---+---+---+---+---+---+---+ -6 & #1, pacific retractor 14068 - Werner Keym, Bernd Schwarzkopf In a legal position with 3 white pieces and the black king, the 6 distances between the pieces are all integer. The sum of the distance to the origin square of all pieces should be minimal. a) White has 2 pawns b) White has 1 pawn c) White has 0 pawns [German text: In einer legalen Stellung mit drei weissen Steinen, darunter a) 2, b) 1, c) 0 Bauern, und dem schwarzen K?nig sind alle (sechs) Abst?nde zwischen den Steinen ganzzahlig. Die Summe der (vier) Abst?nde der Steine zu ihren Partieanfangsfeldern soll minimal sein.] SOLUTIONS Heft 233 13879 - Keym Each castling is legal in itself, but the following castlings are mutually exclusive: (1) both white (2) both black (3) both long (4) both short. The short retrogenesis is: wSxf8, sPd3xSc2-c1=B, Rb7 and Ra5 appeared through promotion on h1 and a8, or through promotion on a1 and h8. In the first case the solution is: 1. OO? OOO!; 1. Rf1! [2. Qc6] Kd8 2. Qc6 Kc8 3. Qc7#, in the second case the solution is: 1. OOO? OO!; 1. Rd1! [2. Qg6] Kf8 2. Qg6 Kg8 3. Qg7# 13880 - le Gleuher PRINTING ERROR! wBe7 instead of wPe7!! -1. Qa7-b8 f4-f3 -2. Kh3-h2 h2-h1=B -3. Kg4-h3 h3-h2 -4. Bh2-g3 g3-g2 -5. Kh5-g4 g4-g3 -6. Bg3-h4 h4-h3 -7. Kh6-h5 h5-h4 -8. Qh4-g5 g5-g4 -9. Sf8-g6 g6-g5 -10. Rg5-f5 f5-f4 -11. Qf7-f6 f6-f5 -12. Qg8-f7 f7-f6 -13. Rf6-e6 e6-e5 -14. Bd8-e7 e7-e6 -15. Re6-d6 d6-d5 -16. Sc5-d7 Ba8-b7 -17. Sb7-c5 Kd7-c8 -18. Sh7-f8 Kc8-d7 13881 - Donati, Heimo 1. d4 e5 2. Bh6 Qg5 3. d5 Qc1 4. d6 g5 5. dxc7 d5 6. Bg7 Bd7 7. c8=N Bd6 8. Nb6 axb6 9. Bf6 Ra3 10. Bd8 Rg3 11. f3 Ba4 12. Kf2 b5 13. Ba5 Ne7 14. Bd2 O-O 15. c3 Rc8 16. Qc2 Qxf1+ 17. Ke3 Qf2+ 18. Kd3 Qb6 19. Bc1 Qd8 Rundlauf and Platzwechsel by Bc1 and Qd8. 13882 - Gr?frath a) 1. d3 Sc6 2. Bf4 Sd4 3. Kd2 Se2 4. Be2 c5 5. Qf1 Qb6 6. Bc7 Qa5 b) 1. d3 Sc6 2. Bd2 Sd4 3. Bf4 Se2 4. Be2 c6 5. Kd2 c5 6. Qf1 Qa5 7. Bc7 13883 - Gr?frath 1. h4 Sh6 2. h5 Sg4 3. h6 Sf2 4. hg7 Sh1 5. gh8=K h6 6. g4 e5 7. Bg2 Qf6 8. Bh1 Qh8 King-Schnoebelen 13884 - Schwarzkopf White and black castling are mutually exclusive. 1. OOO? and black can't castle, so his longest moves are Ba4/Bg4 and no mate in 3. 1. Rd1! OOO 2. Rgd4 Bh3 3. Rd8# 13885 - Wakashima -1. Ke5xBh8! Kg7xSe8 -2. Sf6-e8 and 1. e8=S# 13886 - Weeth, Wenda Main plan: -1. Bc8xSh3[Bf1] Kb8-c7 -2. e5xf6[Pf2]ep f7-f5 -3. c7-c8=B and 1. Rd1[Rh1] Kc7[Ke8] but 2. Rh3[Rh1]. Solution: -1. h2xRg3[Pg2] Rh3-g3 -2. Bf1xRg2[Bf1] Rh8-h2 and now the main plan: -3. Bc8xSh3[Bf1] Kb8-c7 -2. e5xf6[Pf2]ep f7-f5 -3. c7-c8=B and 1. Rd1[Rh1] Kc7[Ke8]# The key is a double Antizielelement: h3 is blocked, and white gains a flightsquare g2. 13887 - Richter Last moves when black has the move: -1. Rb1xBc1 Bb2-c1 -2. Qc1xSc2 S~ -3. c3-c2 etc Last moves when white has the move: -1...Rb2xBa2 -2. Bb1-a2 Ra2xSb2 -3. S~ Rb2-a2 SxQ[RBP] etc. 13888 - Schwarzkopf, Keym DIAGRAM ERROR ON RETRO CORNER: Kf8 instead of Qf8!! If black moved last, it must've been Qg6(x-)h7. If nothing was captured, then the check to the black king would be illegal. So the ELM is of the type QxX. If white moved last, it was Qg6xXh6. With X=Q/B, the white king is in an illegal check. With X=R/S, black has no last move. So the equal last moves were Qg6xPh6/Qg6xPh7, so type QxP. 13889 - Keym, Schwarzkopf 8/8/8/8/6k1/7P/1PPPPP2/2BKQBR1 (11+1). Retracting g2xXh3 leads to an impossible K/Q swap. Any removal leads to either a different last move, or a hole through which the K/Q can escape. 13890 - Keym a) 8/8/7k/8/8/8/8/2B1K2R (sum of distance to homesquares is ~3.6) b) BK5Q/8/8/8/8/8/8/7k (sum of distance to homesquares is ~31.9) COOKS, CORRECTIONS, ETC Heft 180, 10600 (Zolotarev) COOKED by Baibikov: -1... d7xSe6 -2. Sd4-e6 b4-b3 -3. Sf3-d4 Sg4-h2 -4. Sh2-f3 Se5-g4 -5. Sc3-d1 Sc6-e5 -6. Sb5-c3 Se7-c6 -7. Sa7-b5 Sd5-e7 -8. Sc8-a7 Sc3-d5 -9. c7-c8=S Sd1-c3 -10. c6-c7 d2-d1=S -11. c5-c6 d3-d2 -12. c4-c5 d4-d3 -13. f3-f4 c5xRd4 -14. Rg4-d4 Sh4-g2 -15. Rg2-g4 Sf5-h4 -16. g4-g5 c6-c5 -17. Bf4-h6 Sh6-f5 -18. Be5-f4 c7-c6 -19. Bc3-e5 b5-b4 -20. Bd2-c3 a6-a5 -21. Bc1-d2 a7-a6 -22. d2xBe3 Bc5-e3 -23. c3-c4 Bf8-c5 -24. c2-c3 e7xSf6. Heft 195, 11521 - Weeth COOK by Schwarzkopf: -1. Bc4xBf7 Be6-f7 -2. Bb3xQc4 Qc6-c4 -3. Ba2xQb3 Kf6-e7 -4. Qe8xQh5 Qh7-h5 -5. e7-e8=Q Qb1-h7. Heft 198, 11720 - Frolkin, Kornilov COOK by le Gleuher: -1. Sg6xRh8 Rh7-h8 -2. g2-g3 Sg3-h1 -3. Qh8-g8 Se4-g3 -4. Kg8-f8 Sd6-e4 -5. Kf8-g8 Se8-d6 -6. Kg8-f8 Sg7-e8 -7. Sf8xQg6 Re8-e7 -8. a5-a6 Be7-d8 -9. a4-a5 Bc5-e7 -10. a3-a4 e7-e6 -11. Rc6-f6 Correction: 5KQS/2pprp2/P3pR1k/5pRb/2p3pb/1P4PP/2PPPP2/s6s (13+13) -1. Sg6-h8! b5xSc4 -2. SxRg6 Rg7-g6 -3. Sg6- Rh7-g7 -4. a5-a6 R-h7 -5...-8. Sa6-c4 R~ -9. Sc5xPa6 Rh7-~ -10...-13. Sg7-c5 Rh7 -14. Qh8-g8 a7-a6 -15. Kg8-f8 b6-b5 -16. Sf8xQg6 Re8-e7 -17. h2-h3 e7-e6 etc. Heft 230, 13699 - Reddmann After a discussion between Martin Hintz, Bernd Schwarzkopf and Hauke Reddmann, they concluded that the final position isn't unique. The new stipulation (with unchanged solution) should be: Find the shortest symmetric game in which a flaw in the notation rule E10 for FIDE is shown. What's the final position if 6. h2-h4 is played? (Spiele eine m?glichst kurze Beweispartie, in der Weiss und Schwarz symmetrisch spielen und in der eine L?cke in der FIDE-Notationsregel E10 aufgedeckt ist. Wie sieht die Schlussstellung aus, wehnn in der Partie der zug 6. h2-h4 vorkommt?) AFTERWORD FOR 205th TT DER SCHWALBE New record for a knight-Pronkin in losing chess: Mario Richter rn2kbnr/1p2pppp/8/2p5/8/8/q4PPP/1NBQKBNR (10+13) SPG 8.5, Losing chess 1. e4 c5 2. e5 Qa5 3. e6 Qd2 4. ed7 Qc2 5. dc8=S Qb2 6. Sa7 Qa1 7. Sb5 Qb1 8. Sa3 Qa2 9. Sb1 Theme IV (proofgames with duellist chess and as many pawns that make a double single step, instead of a single double step) is probably unique: ALL entries were cooked! The cook for the winner (Crisan, Murarasu, Raican) is: 1. c4 c5 2. f4 f5 3. d4 Qa5+ 4. Kf2 Qc3 5. a4 Qa5 6. h4 Qe1+ 7. Ke3 Qd2+ 8. Kf2 Qc3 9. b4 Qf3+ 10. Ke1 Qe3 11. g4 Qg3+ 12. Kd2 Qd3+ 13. Ke1 Qe3 14. Bg2 Qe6 15. Bd5 Qxd5 16. e4 Qe5 17. Ne2 Qc7 18. Nec3 Qa5 19. Nd5 Qd8 20. Nf6+ Kf7 21. Nxg8 Ke8 22. Nh6 Nc6 23. Nf7 Ne5 24. Nxh8 Nf7 25. Nxf7 d5 26. Nd6+ Kd7 27. Nf7 Kc7 28. Nd6 Kb8 29. Nb5 e5