Here are some chess puzzles from the games of 1911.
White to move and win except where noted.

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

a)
White mates in 2.
George Rotlevi vs Hugo Suchting, Carlsbad, 1911
6k1/1p1r1pp1/p1r3b1/3pPqB1/2pP4/Q1P4R/P3P2K/6R1 w - - 0 1
[ Qf8+ Kxf8 Rh8# ]

b)
White mates in 3.
Oscar Chajes vs Charles Jaffe, New York, 1911
4k3/r2bnn1r/1q2pR1p/p2pPp1B/2pP1N1P/PpP1B3/1P4Q1/5KR1 w - - 0 1
[ Qg8+ Nxg8 Rxg8+ Ke7 Ng6# ]

c)
White mates in 4.
Aaron Nimzowitsch vs Saviely Tartakower, Carlsbad, 1911
r1b2k2/pppq1prp/3p1Qp1/8/2B5/2P5/PPP2PPP/R3R1K1 w - - 0 1
[ Bxf7 if c5 Bd5+ Qf7 Qd8+ ]

d)
Oldrich Duras vs Erich Cohn, Carlsbad, 1911
2R5/4Q3/5pk1/6n1/8/1P3PPq/r7/6K1 w - - 0 1
[ Rg8+ Kf5 Qc5+ Ke6 Qc8+ Ke5 Re8+ ]

e)
Alexander Alekhine vs Oskar Tenner, Cologne, 1911
r2qk2r/ppp2ppp/8/2p1n2n/2B1P1b1/3PBN2/PPP3PP/R2QK2R w - - 0 1
[ Nxe5 Bxd1 Bxf7+ Ke7 Bxc5+ if Kf6 0-0+ mates ]

1b)
mate in 3
Oscar Chajes vs Charles Jaffe

1911 Puzzles, Part II.
White to move and win except where noted.
a)
Hans Fahrni vs Boris Kostic, Carlsbad, 1911
3r1r1k/2p4p/p3q3/1pbpP3/5p1Q/2PR1N1P/PP4P1/3R3K w - - 0 1
[ Qxh7+ Kxh7 Ng5+ ]

b)
Kluxen vs Jose Capablanca, Hamburg, 1911
r4r1k/ppp2Bpp/5q2/4NQ2/8/8/PP3PPP/n4RK1 w - - 0 1
[ Ng6+ Qxg6 Bxg6 Rxf5 Bxf5 ]

c)
Karel Hromadka vs Hafe, Cologne, 1911
7r/3k4/p3p3/3b1p2/5Q2/2b2PP1/q4B2/1R1B2K1 w - - 0 1
[ Ba4+ Ke7 Qc7+ if Kf6 Qxc3+ or if Kf8 Rb8# ]

d)
George Salve vs Milan Vidmar, Carlsbad, 1911
r4rk1/3b1pp1/5q2/1p1PpN2/2pbP1P1/2N2P2/1P1Q2K1/R3R3 w - - 0 1
[ g5 if Qd8 Rxd8 Qxd8 Ne7+ mates ]

e)
H Wegemund vs Thoenes, Cologne, 1911
r3k2r/1pp2pp1/p1p4p/4b3/4P1b1/1QPq1N2/PP1N1PPP/R3K2R w KQkq - 0 1
[ Qxf7+ if Kd8 0-0-0 Qb5 Nxe5 or if Kxf7 Nxe5+ ]

2a)
Hans Fahrni vs Boris Kostic

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