Solution of the Christmas chess riddle (#69). / Lösung des Weihnachtsschachrätsels (#69).
dtube·@jaki01·
0.000 HBDSolution of the Christmas chess riddle (#69). / Lösung des Weihnachtsschachrätsels (#69).
<html> <hr> <center> <a href='https://d.tube/#!/v/jaki01/tos9sicp'><img src='https://ipfs.io/ipfs/QmaYzyRnVERM9knp5AvmcbDHkb5EHD6v54o1kykcGJSG5d'></a> </center> <hr> <h1> <center> Congrats: @juanmi96 and @schachoberhessen found enough variations to be declared as winners of this round and received 100 % upvotes from @jaki01 and @davidorcamuriel! </center> </h1> <br> </center> <hr> <table> <tr> <td> <p> <center> <b> English </b> </center> </p> <p> Normally I post the solutions directly under my chess puzzles, but since this proved to be really difficult and complex, I decided to dedicate it a complete new article plus DTube video. </p> <p> Here again the starting position, in which white should checkmate in 17 moves at the latest: </p> </td> <td> <p> <center> <b> Deutsch </b> </center> </p> <p> Normalerweise poste ich die Lösungen direkt unter meinen Schachrätseln, aber da sich dieses als sehr schwierig und komplex erwies, entschied ich mich für einen eigenen Artikel samt DTube video. </p> <p> Hier nochmals die Ausgangsstellung, in welcher Weiß in spätestens 17 Zügen schachmatt setzen soll: </p> </td> </tr> </table> <hr> <center> https://cdn.steemitimages.com/DQmQvV4QXfJ2WvLkhxxL5vHmP5VhLqjN67aFLJMavsdLsKd/Chess_problem69.jpg </center> <hr> <table> <tr> <td> <p> White begins by castling king's side, threatening the black king with a fatal discovered check. </p> <p> 1. 0-0! </p> <p> We now consider <b>a) 1. ... Kf7</b> and <b>b) 1. ... Kf5</b>. After 1. ... e4 wins 2. Ng4#, and after 1. ... g4 wins 2. ... Ne4#. </p> <h1> a) </h1> <p> <br> <b>1. 0-0! Kf7</b> <br> <b>2. Rc8! Bg3</b> <br> <b>3. Ng4+ Bf4</b> <br> <b>4. Nxe5+ Kf6</b> <br> <b>5. d4! Kf5</b> <br> <b>6. g4+ Ke4</b> <br> <b>7. Re1+ Kxd4</b> <br> <b>8. Nf3+ Kd3</b> <br> <b>9. Rc3#</b> checkmate. </p> </td> <td> <p> Weiß beginnt mit der kurzen Rochade, wodurch dem schwarzen König ein fatales Abszugsschach droht. </p> <p> 1. 0-0! </p> <p> Wir betrachten nun <b>a) 1. ... Kf7</b> und <b>b) 1. ... Kf5</b>. Nach 1. ... e4 gewinnt 2. Sg4#, und nach 1. ... g4 gewinnt 2. Se4#. </p> <h1> a) </h1> <p> <br> <b>1. 0-0! Kf7</b> <br> <b>2. Tc8! Lg3</b> <br> <b>3. Sg4+ Lf4</b> <br> <b>4. Sxe5+ Kf6</b> <br> <b>5. d4! Kf5</b> <br> <b>6. g4+ Ke4</b> <br> <b>7. Te1+ Kxd4</b> <br> <b>8. Sf3+ Kd3</b> <br> <b>9. Tc3#</b> schachmatt. </p> </td> </tr> </table> <hr> <center> https://cdn.steemitimages.com/DQmS37c5UJHrtMaUFm3ynGZfuNi9pK2WhSPssuHYyxoGp1w/Chess_problem69_L-a.jpg </center> <hr> <table> <tr> <td> <h1> b) </h1> <p> <br> <b>1. 0-0! Kf5</b> <br> <b>2. Nd1+!</b> </p> </p> <p> Again, black has two choices: the obvious <b>b1) 2. ... Kg4</b> and the surprisingly more promising <b>b2) Bf2+!?</b>. </p> <h1> b1) </h1> <p> <br> <b>1. 0-0! Kf5</b> <br> <b>2. Nd1! Kg4</b> <br> <b>3. Ne3+ Kh5</b> <br> <b>4. g4+ Kh6</b> <br> <b>5. Rc8! Kh7</b> Rh8# has to be prevented. <br> <b>6. Rff8! b1Q+</b> <br> <b>7. Nf1 Bf2+!</b> <br> <b>8. Kh2! Bg3+</b> <br> After 8. Kxf2 Nxd3+ it lasts significantly longer until checkmate, and after 8. Kg2 actually black wins! <br> <b>9. Kg2!</b> Most accurate. <b>9. ... Qxf1+</b> <br> <b>10. Kxf1 Qb1+</b> <br> <b>11. Kg2 Qg1+</b> <br> <b>12. Kxg1 Bf2+</b> <br> <b>13. Rxf2 a2</b> <br> <b>14. Rh2#</b> checkmate. </p> </td> <td> <h1> b) </h1> <p> <br> <b>1. 0-0! Kf5</b> <br> <b>2. Sd1+!</b> </p> <p> Wieder hat Schwarz zwei Möglichkeiten: Das naheliegende <b>b1) 2. ... Kg4 </b> und das überraschenderweise erfolgversprechendere <b>b2) Lf2+!?</b>. </p> <h1> b1) </h1> <p> <br> <b>1. 0-0! Kf5</b> <br> <b>2. Sd1! Kg4</b> <br> <b>3. Se3+ Kh5</b> <br> <b>4. g4+ Kh6</b> <br> <b>5. Tc8! Kh7</b> Th8# muss verhindert werden. <br> <b>6. Tff8! b1D+</b> <br> <b>7. Sf1 Lf2+!</b> <br> <b>8. Kh2! Lg3+</b> <br> Nach 8. Kxf2 Sxd3+ dauert es deutlich länger bis zum Matt, und nach 8. Kg2 gewinnt sogar Scharz! <br> <b>9. Kg2!</b> Am genauesten. <b>9. ... Dxf1+</b> <br> <b>10. Kxf1 Db1+</b> <br> <b>11. Kg2 Dg1+</b> <br> <b>12. Kxg1 Lf2+</b> <br> <b>13. Txf2 a2</b> <br> <b>14. Th2#</b> schachmatt. </p> </td> </tr> </table> <hr> <center> https://cdn.steemitimages.com/DQmS68Roft9PnrRXbA39g6UxNSMtWfZjSFR5dxjxLQXLZLz/Chess_problem69_L-b1.jpg </center> <hr> <table> <tr> <td> <h1> b2) </h1> <p> <br> <b>1. 0-0! Kf5</b> <br> <b>2. Nd1! Bf2+!?</b> <br> This move gives the black king somewhat more mobility. <br> <b>3. Rxf2+ Kg4</b> <br> <b>4. Ne3+ Kh4</b> 4. ... Kh5 5- g4+ Kh4 6. Rc8 and white checkmates shortly. <br> <b>5. g3+! Kh3</b> <br> <b>6. Rh2+ Kxg3</b> <br> <b>7. Nf1+ Kg4</b> <br> <b>8. Rg2+ Kf4</b> <br> <b>9. Rf2+ Kg4</b> <br> <b>10. Rc8!</b> Idea: 11. Rg2+ Kf4 12. Rf8# checkmate. <b>10. ... e4</b> <br> <b>11. Rcf8 Bd1</b> <br> <b>12. Ne3+ Kh4</b> <br> <b>13. Rh2+ Kg3</b> <br> <b>14. Rg2+ Kh4</b> <br> <b>15. Th8+ Bh5</b> <br> <b>16. Kh2!!</b> The only winning move! <b>16. ... b1Q</b> <br> <b>17. Rg4#</b> checkmate. </p> <br> </td> <td> <h1> b2) </h1> <p> <br> <b>1. 0-0! Kf5</b> <br> <b>2. Sd1! Lf2+!?</b> <br> Dieser Zug verschafft dem schwarzen König etwas mehr Bewegungsfreiheit. <br> <b>3. Txf2+ Kg4</b> <br> <b>4. Se3+ Kh4</b> 4. ... Kh5 5- g4+ Kh4 6. Tc8 und Weiß setzt bald matt. <br> <b>5. g3+! Kh3</b> <br> <b>6. Th2+ Kxg3</b> <br> <b>7. Sf1+ Kg4</b> <br> <b>8. Tg2+ Kf4</b> <br> <b>9. Tf2+ Kg4</b> <br> <b>10. Tc8!</b> Idee: 11. Tg2+ Kf4 12. Tf8# schachmatt. <b>10. ... e4</b> <br> <b>11. Tcf8 Ld1</b> <br> <b>12. Se3+ Kh4</b> <br> <b>13. Th2+ Kg3</b> <br> <b>14. Tg2+ Kh4</b> <br> <b>15. Th8+ Lh5</b> <br> <b>16. Kh2!!</b> Der einzige Gewinnzug! <b>16. ... b1D</b> <br> <b>17. Tg4#</b> schachmatt. </p> </td> </tr> </table> <hr> <center> https://cdn.steemitimages.com/DQmPkanNQAwqwt26UJjPMVotyrVJkr51vAdCf4ZqBCc1Rsv/Chess_problem69_L-b2.jpg </center> <hr> <a href='https://d.tube/#!/v/jaki01/tos9sicp'> ▶️ DTube</a><br /><a href='https://ipfs.io/ipfs/QmXsLkR9WWramt694tbSp4wFNXz4zgjSviq2KjgjtywTf5'> ▶️ IPFS</a> <hr> </html>
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