ChessProblems.ca Originals

2010 Tourney: T21-30

Compositions:
Main Page | T1-10 | T11-20 | T31-40 | T41-50 | T51-60 | T61-70 | T71-80
HC1-10 | HC11-20 | HC21-30 | HC31-40 | HC41-50 | HC51-60 | HC61-70

Last updated: 08.05.2011
#	Problem	Solution
T30	Miodrag Mladenović & Arno Tüngler Serbia & Germany T30 ChessProblems.ca, 27.12.2010 ser-h!= 148 C+ (12+5) C+ Circe Sirene c7, h2, Triton b7, g2, h4, Nereïde c1, g1, h1	Solution: 1.g7-g6 18.Kb1c1 [+wNDc8] 27.Kb8c8 36.Kf4e3 58.Kf1g1 [+wNDg8] 75.Kf8g8 81.Ke3d4 [+wSg1] 104.Kf1g1 126.Kf4f3 [+wPf2] 127.Kf3-e2 128.NDh1g2-f3 [+wTRg8] 129.Ke2f2 135.Kh7g8 140.Kc8-b8 141.NDf3b7-a8 142.NDa8-c6 143.Kb8c7 [+wSIc8] 144.Kc7c8 146.NDd5*e6-f7 [+wPe2] 148.Kd7-e6 e2-e4 != Problem composed according to ifaybish.com TT6 conditions. Please see ifaybish TT6 Introduction and Results. It is based on Miodrag's 4^th Place matrix (below), and it would have won the 1^st Place if it had been composed during the tournament! Miodrag Mladenović 4^th Place A1 ifaybish.com TT6 2010 ser-h!= 118 (11+3) C+ Circe Previous record: Ralf Krätschmer 1^st Place A1 ifaybish.com TT6 2010 ser-h= 146 (13+5) C+ Circe
T29	Bojan Bašić Serbia T29 ChessProblems.ca, 19.12.2010 ser-s+ 10 (12+4) Extinction Chess, No White Captures	Solution: 1.Qe8-f7 2.Rc8-f8 3.Sc6-d8 4.Qa6-f6 5.Kd5-d6 6.Qf7-b3 7.Kd3-c4 8.Be4-b1 9.Sf2-d3 10.Rh2-c2 Ra1a2, Ra1b1, Rc3b3, Rc3c2, Rc3c4, Rc3d3, Bh7g6, Bh7g8, Be7f6, Be7f8, Be7d6, Be7d8 + It is not enough just to arrange somehow the white pieces around the four black pieces. For example, the following is not a solution: 1.Rc8-b8 2.Rb8-b3 3.Kd3-c4 4.Be4-b1 5.Sf2-d3 6.Rh2-c2 7.Qe8-f8 8.Sc6-d8 9.Qa6-f6 10.Kd5-d6. Also note that in the solution the pieces around the black rooks and bishops are arranged precisely in the same order. There is also an interesting try to switch the roles of Qe8 and Bg8, which almost succeeds. The pieces can be arranged in 10 moves (Bg8-b3, Kd3-c4, Be4-b1, Sf2-d3, Rh2-c2, Qe8-g8, Rc8-f8, Sc6-d8, Qa6-f6, Kd5-d6), but these moves cannot be ordered properly! Extinction Chess was invented by R. Wayne Schmittberger in 1985 (under the name Survival of the Species), and was mentioned in his 1992 book "New Rules for Classic Games" (ISBN 0-471-53621-0). The first player who does not have pieces of all types loses the game, and a side is in check if it is threatened to lose the last piece of its kind. Pawns may promote to any other type of piece, including Kings. Castling under or through orthodox check is allowed.
T27	Ivan Skoba Czech Republic T27 ChessProblems.ca, 17.10.2010 (Version 08.05.2011) Position a: Position b: ser-ha=>b 35 (10+7) C+ Madrasi	Solution: 1.f7-f5 2.Kc8-b8 6.f2-f1=R 7.Rf1d1 8.Rd1d6 9.Rd6a6 10.Ra6g6 11.a7-a5 12.Kb8-a7 16.a2-a1=S 17.Sa1-b3 18.Sb3c5 19.Sc5-a6 20.c7-c5 21.Sa6-b8 25.c2-c1=Q 26.Qc1-c6 27.Qc6-a8 28.d7-d5 29.Rg6-g7 33.d2-d1=B 34.Bd1-f3 35.Bf3-b7 Bh6-e3 a=>b 4 x Excelsior, 4 x temporary Madrasi paralysis of a pawn that has just made a double-step and can be captured en-passant and AUW!! Madrasi* (invented in 1979 by A. J. Karawatkar): a piece threatened by a piece of the same type but of opposite color is paralyzed and becomes unable to move, capture or give check. Most of the time, two like pieces attack each other mutually, meaning they are both paralyzed (en passant pawn captures are a rare exception to this). Ivan has been exploring the effects of the temporary Madrasi paralysis of a pawn that had just made a double-step and can be captured en-passant for quite some time. Ten years ago he also published in Pat a Mat 29/2000 a very interesting article about Madrasi, focused on this specific effect. The second part of the article was published in Pat a Mat 64/2008. There are other possibilities of non-reciprocal Madrasi paralysis (KöKo, Imitator, neutral pieces etc.); Arnold Beine wrote an article on this topic in Harmonie 75, in September 2003, and the 12^th Harmonie TT was dedicated to this. The author writes that he worked for a few years on this idea, trying to find a sound ser-h#, in the end having to settle for this ser-ha=>b version, with mating finale. The challenge for our readers is, of course, to find a ser-h# position encapsulating this idea (4 x Excelsior, 4 x temporary Madrasi "en-passant" paralysis and AUW)!
T26	Ralf Krätschmer Germany T26 ChessProblems.ca, 13.10.2010 ser-h= 92 (13+3) C+ Circe Sirene c2, Triton a8, g7, Nereïde d1, d8, f1, f8	Solution: 13.Kg8f8 31.Kb7a8 51.Ke8d8 69.Ka5b6 [+wPb2] 70.Kb6a7 [+wSg1] 82.Kg3g2 83.Kg2g1 85.Kh2h3 [+wPh2] 86.Kh3-h4 87.NDf1-h3 88.NDh3-g4 90.Kg5-f6 91.NDg4-e6 92.NDe6-d5 Ke4*d5 = The family of Marine pieces combines locust-style captures with the moving power of the corresponding orthodox pieces. Marine pieces have names alluding to the sea and its myths: Nereïde = Marine Bishop, Triton = Marine Rook, Sirene = Marine Queen.
T25	Ivan Skoba & Ján Golha Czech Republic & Slovakia T25 ChessProblems.ca, 05.10.2010 ser-h# 702 (3+1) C+ PWC Hole a8 b3 b4 b5 b6 c2 c6 c7 d2 d5 d8 e2 e4 e8 f2 f7 g2 g3 g4 g5 g6 h1 h8	Solution: 19.Kh4h5 [+wPh4] 21.Kh6h7 [+wPh6] 41.Kh3h4 [+wPh3] 43.Kh5h6 [+wPh5] 63.Kh2h3 [+wPh2] 65.Kh4h5 [+wPh4] 85.Kg1h2 [+wPg1] 87.Kh3h4 [+wPh3] 107.Kf1g1 [+wPf1] 109.Kh2h3 [+wPh2] 129.Ke1f1 [+wPe1] 131.Kg1h2 [+wPg1] 151.Kd1e1 [+wPd1] 153.Kf1g1 [+wPf1] 173.Kc1d1 [+wPc1] 175.Ke1f1 [+wPe1] 195.Kb1c1 [+wPb1] 197.Kd1e1 [+wPd1] 217.Ka2b1 [+wPa2] 219.Kc1d1 [+wPc1] 239.Ka3a2 [+wPa3] 241.Kb1c1 [+wPb1] 261.Ka4a3 [+wPa4] 263.Ka2b1 [+wPa2] 283.Ka5a4 [+wPa5] 285.Ka3a2 [+wPa3] 305.Ka6a5 [+wPa6] 307.Ka4a3 [+wPa4] 328.Ka7a6 [+wPa7] 330.Ka5a4 [+wPa5] 352.Ka6a7 [+wPa6] 374.Ka4a5 [+wPa4] 375.Ka5a6 [+wPa5] 396.Ka3a4 [+wPa3] 397.Ka4a5 [+wPa4] 418.Ka2a3 [+wPa2] 419.Ka3a4 [+wPa3] 440.Kb1a2 [+wPb1] 441.Ka2a3 [+wPa2] 462.Kc1b1 [+wPc1] 463.Kb1a2 [+wPb1] 484.Kd1c1 [+wPd1] 485.Kc1b1 [+wPc1] 506.Ke1d1 [+wPe1] 507.Kd1c1 [+wPd1] 528.Kf1e1 [+wPf1] 529.Ke1d1 [+wPe1] 550.Kg1f1 [+wPg1] 551.Kf1e1 [+wPf1] 572.Kh2g1 [+wPh2] 573.Kg1f1 [+wPg1] 594.Kh3h2 [+wPh3] 595.Kh2g1 [+wPh2] 616.Kh4h3 [+wPh4] 617.Kh3h2 [+wPh3] 638.Kh5h4 [+wPh5] 639.Kh4h3 [+wPh4] 660.Kh6h5 [+wPh6] 661.Kh5h4 [+wPh5] 682.Kh7h6 [+wPh7] 683.Kh6*h5 [+wPh6] 702.Ke7-f8 Bd4-c5 # Ivan's lecture on "Hole Board Puzzles" in Marianka earlier this year: Marianka 2010 Bulletin (page 27). No white King.
T24	Arno Tüngler Germany Sonja gewidmet zu unserem 22. Hochzeitstag am 24. September 2010 T24 ChessProblems.ca, 24.09.2010 ser-h= 102 (12+4) C+ Circe Sirene e7, Triton f2, Nereïde f1, g2, g1	Solution: 1.Ke1-d1 22.Kh4-h3 23.Kh3h2 47.Ke1f1 [+wNDf8] 64.Ke8f8 72.Kh2h1 [+wSb1] 90.Kd4d3 [+wPd2] 94.Ke1f2 [+wTRf8] 95.Kf2-f1 96.NDg1-f2 101.Kh4-h5 102.NDf2-h4 TRf8-h8 = In the solution, the black king draws three times an "S" moving from b3 to d8, and also a "2" going from b6 to d1, as indicated in the diagram. The family of Marine pieces combines locust-style captures with the moving power of the corresponding orthodox pieces. Marine pieces have names alluding to the sea and its myths: Nereïde = Marine Bishop, Triton = Marine Rook, Sirene = Marine Queen.
T23	Vlaicu Crisan & Cornel Pacurar Romania & Canada T23 ChessProblems.ca, 21.08.2010 (v) ser-h# 10 (5+2) C+ b) wPe7 -> h7, pser-h!= 10 Cage Circe	Solutions: a) 1.Ke8e7 [+wPe6] 2.Ke7e6 [+wPe5] 3.Ke6e5 [+wPe4] 4.Ke5e4 [+wPe3] 5.Ke4e3 [+wPe2] 6.Ke3e2 [+wPe1] 7.Ke2-f3 8.Kf3g3 [+wPa8=wB] 9.Kg3h3 [+wPh2] 10.Kh3-g2 Ba8b7 [+bPh3] # b) 1.b7-b5 2.b5-b4 3.b4-b3 4.b3-b2 + Ka1b2 [+bPh4] 5.h4g3 [+wPe7] 6.g3-g2 7.g2h1=Q 8.Qh1h3 [+wPe6] 9.Qh3h7 [+wPe5] 10.Qh7-c2 + Kb2-a1 != Anti-Excelsior (possibly for the first time in series-mover form!) in the first twin and Excelsior in the second! All captures are made by the black king in the first twin and by the black pawn in the second. In a) , 9.Kg3-g2 Ba8b7 [+bPg3]#? is not possible because of the specific Cage Circe parry move 10.Kg2h3 [+wPh2]! Nicolas Dupont and Étienne Dupuis' Cage Circe article (Diagrammes, 2009).
T22	Radovan Tomašević Serbia T22 ChessProblems.ca, 06.08.2010 ser-# 88 (8+14) C+ b) Pg5->e5 ser-# 89	a) 5.Ke1f2 22.Kg8h7 41.Kg1h2 63.Kh5g4 84.Kf2g2 86.Kf3-e4 87.Bh1-f3 88.Ke4d3 # b) 5.Ke1f2 22.Kg8h7 41.Kg1h2 63.Kh5g4 84.Kf2g2 85.Kg2-f3 88.Bf1d3 89.Bd3-e4 # New direct series-mate length record - last move by King! (first twin) Previous record: 49 moves, V. Janál, Blog zlínského problemisty, 2.08.2010 (shx153.blog.cz/1008/kdo-se-boji-sere-v-sini) Table of records: lengthrecords.chessproblems.ca.
T21	Zoran Sibinović Serbia T21 ChessProblems.ca, 04.08.2010 ser-# 117 (9+15) C+	1.Kf1-e1 5.Kb1-a1 6.Ba2-b1 18.Kg8h8 22.Kh5g4 36.Ka2-a1 37.Bb1-a2 43.Kf1g1 49.Kb1-a1 50.Ba2-b1 65.Kg4h3 80.Ka2-a1 81.Bb1-a2 88.Kg1h1 95.Kb1-a1 96.Ba2-b1 111.Kg4f3 112.Kf3-g4 114.f4e5 115.Kg4g5 116.Kg5-f4 117.Sh7-f8 # New direct series-mate length record - last move by Knight! Previous record: 101 moves, Vladimír Janál - YouTube.(?) Table of records: lengthrecords.chessproblems.ca.