Problem p56136
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Technical Merit
To Play
Artistic Impression
Star Rating4.0

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Star Ratings
2008-03-24 07:47:26Wolfgang1388
2010-07-05 06:22:06Lioric1525
2017-05-14 19:59:26JustDefend1445
2017-05-30 17:09:18greatloser1417

2010-07-05 06:22:06Lioric1525I failed it but excellent puzzle... "illusion of the pin" 
2013-08-30 23:38:55BadMamaJama1284I didn't find it challenging. The 1st move is forced, and the 2nd only requires you to see the B is pinned. It looks like white will soon be crushed, but while Nxa8 is a blunder, Crafty's line is materially even. 
2013-08-30 23:40:00BadMamaJama1284It looks like white's blunder is only one point worse materially than Crafty's preferred response, but Crafty rates it as over three better. 
2017-05-14 19:59:22JustDefend1445I hope to not miss this during a game. 

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Crafty 19.19 3GHZ 5sec

1. Qxd7+ Kf8
({10:+3.29} 1. ... Kf8 2. Nd2 Bd3 3. Qd6+ Kg7 4. Nxa8 Qxd2+ 5. Rf2 Qe3 6. Nc7 Rg8 7. Nxa6 Bxa6 8. Qxa6 Qxc5 $18)
2. Nxa8 Qe2+
({12:-0.02} 2. ... Qe2+ 3. Kg1 Bxf3 4. Qd2 Qxd2 5. Nxd2 Bxa8 6. Ra1 Bb7 7. c6 Bxc6 8. Rxa6 Bd5 9. Ra7 $10)
({11:+4.16} 2. ... Bxa8 3. Nd4 Bd5 4. Qd8+ Kg7 5. Nf5+ exf5 6. Qxd5 Rb8 7. Qxf5 Rb2+ 8. Kh3 Qe6 9. Qxe6 fxe6 10. c6 $18)