Here are some chess puzzles from games of the 2012 World Open.
The color disk on the diagram indicates who moves first.

Solutions are between the brackets under each puzzle.
Drag your cursor from one bracket to the other.

a)
Samuel Shankland vs Rafael Prasca Sosa, Philadelphia, 2012
1r1q1bk1/Rp2p2p/1Pp3pP/2Pb1pP1/Q2PpP2/1BB1P3/1K6/8 w - - 0 1
[ Rxb7 Rxb7 Qxc6 if Rxb6 cxb6 Bf7 Qe6 ]

b)
Leonid Gerzhoy vs Luciana Morales Mendoza, Philadelphia, 2012
3r2k1/1q4pp/r2b1p2/pb2pP2/4P3/4B1P1/1PQ3BP/2RR2K1 w - - 0 1
[ Qb3+ Kf8 Bf1 Rb8 Bxb5 if Rxb6 Qe6 or if Qxb5 Rc8+ ]

c)
Erik Santarius vs Sean Vibbert, Philadelphia, 2012
1r5k/1r4bp/3q2p1/Rnp1p3/2B1b3/2P1BN1P/5PP1/2Q1R1K1 w - - 0 1
[ Ng5 if Bd5 Bxd5 Qxd5 c4 or if Qc6 Rxb5 Rxb5 Nf7+ ]

d)
Daniel Naroditsky vs Ruslan Kashtanov, Philadelphia, 2012
4r1k1/p2Qr2p/1p6/n1p1b1N1/2q2pP1/5P2/1P3BKP/3RR3 w - - 0 1
[ Rxe5 ]

e)
James Black vs Magesh Chandran Panchanathan, Philadelphia, 2012
8/p5pk/2r5/1p2P3/4n2P/P5p1/6P1/2BR1K2 b - - 0 1
[ ...Nf2 if Re1 Nd3 ]

2012 World Open Puzzles, Part II. The color disk on the diagram indicates who moves first.
a)
William Fisher vs Samuel Shankland, Philadelphia, 2012
r1qr2k1/p3ppbp/b5p1/4N2n/2N5/2Q5/PP1B1PPP/R3R1K1 b - - 0 1
[ ...Bxc4 ]

b)
Black Mates in 2. Erik Santarius vs Axel Bachmann, Philadelphia, 2012
6k1/p6p/b1p3p1/3p4/3P2n1/6R1/PP1BrrPP/RN4K1 b - - 0 1
[ ...Re1+ ]

c)
Black Mates in 3. Joshua Friedel vs Jon Hammer, Philadelphia, 2012
8/1kp3R1/1p3B2/pN3pP1/P1b2P2/5K2/2r5/4b3 b - - 0 1
[ ...Bd5+ Ke3 Bf2+ ]

d)
Luke Harmon vs Gregory Shahade, Philadelphia, 2012
1n2rr1k/2p3p1/p6p/P7/3PN1qP/2P3P1/2QK1R2/R7 b - - 0 1
[ ...Rxf2+ Nxf2 Re2+ Kd1 Rxf2+ ]

e)
Black Mates in 6. Gregory Kaidanov vs Mikheil Kekelidze, Philadelphia, 2012
6k1/1pR3pp/2b5/8/3prR2/P7/1B1Q2Pq/3K4 b - - 0 1
[ ...Ba4+ ]


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