MESON Chess Problem Database
Problem Display
PID: 8984 (5N2/3R1b2/p3p3/1n2k1K1/6p1/1Q6/2P5/4r2n w - - 0 1)
Strydom, Jan
1st Prize, The Observer, 1966
#3
5 + 8
| 56 | The Problemist | 2003 |
| 136 | Problem Observer | 2007 |
SOLUTION
- SOUND
- Sets
- 1...Ra1
- 2.Qe3#
- 1...Rb1
- 2.Qe3#
- 1...Rc1
- 2.Qe3#
- 1...Rd1
- 2.Qe3#
- 1...Rf1
- 2.Qe3#
- 1...Rg1
- 2.Qe3#
- 1...Re3
- 2.Qxe3#
- 1...Re4
- 2.Qxe6+
- 2...Bxe6
- 3.Sg6#
- 2...Bxe6
- 2.Qxe6+
- 1...Bh5
- 2.Qxe6#
- 1...Bg6
- 2.Qxe6#
- 1...Be8
- 2.Qxe6#
- 1...Bg8
- 2.Sg6+
- 2...Ke4
- 3.Qd3#
- 2...Ke4
- 2.Qc4
- threat
- 3.Sg6#
- 3.Qf4#
- 2...Sd4
- 3.Qxd4#
- threat
- 2.Sg6+
- 1...Sf2
- 2.Qg3+
- 2...Ke4
- 3.Qf4#
- 2...Ke4
- 2.Qg3+
- 1...Sg3
- 2.Qxg3+
- 2...Ke4
- 3.Qf4#
- 2...Ke4
- 2.Qxg3+
- 1...Sa3
- 2.Qb8+
- 2...Ke4
- 3.Qf4#
- 2...Ke4
- 2.Qb8+
- 1...Sc3
- 2.Qb8+
- 2...Ke4
- 3.Qf4#
- 2...Ke4
- 2.Qb8+
- 1...Sd4
- 2.Qb8+
- 2...Ke4
- 3.Qf4#
- 2...Ke4
- 2.Qb8+
- 1...Sa7
- 2.Qc4
- threat
- 3.Qd4#
- 3.Qf4#
- 2...Re4
- 3.Qc5#
- 3.Qc7#
- threat
- 2.Qb4
- threat
- 3.Qxe1#
- 3.Qd4#
- 3.Qf4#
- 2...Re4
- 3.Qc5#
- 3.Qd6#
- 3.Qb8#
- threat
- 2.Qb8+
- 2...Ke4
- 3.Qf4#
- 2...Ke4
- 2.Qc4
- 1...Ra1
- Tries
- 1.Sg6+?
- 1...Ke4
- 2.Qd3#
- 1...Bxg6!
- 1...Ke4
- 1.Rd2?
- threat
- 2.Sd7+
- 2...Ke4
- 3.Qd3#
- 2...Ke4
- 2.Qa4
- threat
- 3.Sd7#
- 3.Qf4#
- 2...Sd4
- 3.Qxd4#
- threat
- 2.Qc4
- threat
- 3.Sd7#
- 3.Qf4#
- 2...Sd4
- 3.Qxd4#
- threat
- 2.Qb4
- threat
- 3.Sd7#
- 3.Qf4#
- 2...Sd4
- 3.Qxd4#
- threat
- 2.Sd7+
- 1...Ke4
- 2.Qd3+
- 2...Ke5
- 3.Sd7#
- 2...Ke5
- 2.Qd3+
- 1...Re2
- 2.Sd7+
- 2...Ke4
- 3.Qd3#
- 2...Ke4
- 2.Qd3
- threat
- 3.Sd7#
- 3.Rxe2#
- 3.Qxe2#
- 2...Sd4
- 3.Qxd4#
- threat
- 2.Sd7+
- 1...Bg8
- 2.Sg6+
- 2...Ke4
- 3.Qd3#
- 2...Ke4
- 2.Sd7+
- 2...Ke4
- 3.Qd3#
- 2...Ke4
- 2.Qa4
- threat
- 3.Sg6#
- 3.Sd7#
- 3.Qf4#
- 2...Sd4
- 3.Qxd4#
- threat
- 2.Qc4
- threat
- 3.Sg6#
- 3.Sd7#
- 3.Qf4#
- 2...Sd4
- 3.Qxd4#
- threat
- 2.Qd3
- threat
- 3.Sg6#
- 3.Sd7#
- 2...Sd4
- 3.Qxd4#
- threat
- 2.Qb4
- threat
- 3.Sg6#
- 3.Sd7#
- 3.Qf4#
- 2...Sd4
- 3.Qxd4#
- threat
- 2.Sg6+
- 1...Sf2
- 2.Qg3+
- 2...Ke4
- 3.Qf4#
- 2...Ke4
- 2.Qg3+
- 1...Sg3
- 2.Sd7+
- 2...Ke4
- 3.Qd3#
- 2...Ke4
- 2.Qxg3+
- 2...Ke4
- 3.Qf4#
- 2...Ke4
- 2.Sd7+
- 1...Sa3
- 2.Sd7+
- 2...Ke4
- 3.Qd3#
- 2...Ke4
- 2.Qd3
- threat
- 3.Sd7#
- 3.Qd4#
- threat
- 2.Qb8+
- 2...Ke4
- 3.Qf4#
- 2...Ke4
- 2.Sd7+
- 1...Sc3
- 2.Qb8+
- 2...Ke4
- 3.Qf4#
- 2...Ke4
- 2.Qb8+
- 1...Sd6
- 2.Sd7+
- 2...Ke4
- 3.Qd3#
- 2...Ke4
- 2.Sd7+
- 1...Sa7
- 2.Sd7+
- 2...Ke4
- 3.Qd3#
- 2...Ke4
- 2.Qa4
- threat
- 3.Sd7#
- 3.Qd4#
- 3.Qf4#
- threat
- 2.Qc4
- threat
- 3.Sd7#
- 3.Qd4#
- 3.Qf4#
- threat
- 2.Qd3
- threat
- 3.Sd7#
- 3.Qd4#
- threat
- 2.Qb4
- threat
- 3.Sd7#
- 3.Qd4#
- 3.Qf4#
- threat
- 2.Qb8+
- 2...Ke4
- 3.Qf4#
- 2...Ke4
- 2.Sd7+
- 1...Sc7
- 2.Sd7+
- 2...Ke4
- 3.Qd3#
- 2...Ke4
- 2.Qb4
- threat
- 3.Sd7#
- 3.Qd4#
- 3.Qf4#
- threat
- 2.Sd7+
- 1...a5
- 2.Sd7+
- 2...Ke4
- 3.Qd3#
- 2...Ke4
- 2.Qa4
- threat
- 3.Sd7#
- 3.Qf4#
- 2...Sd4
- 3.Qxd4#
- threat
- 2.Qc4
- threat
- 3.Sd7#
- 3.Qf4#
- 2...Sd4
- 3.Qxd4#
- threat
- 2.Sd7+
- 1...Sd4!
- threat
- 1.Rd5+?
- 1...Ke4
- 2.Qd3#
- 1...exd5!
- 1...Ke4
- 1.Qc4?
- threat
- 2.Qf4#
- 1...Sd4
- 2.Qxd4#
- 1...Rf1
- 2.Qe2#
- 1...Re4
- 2.Qc5#
- 1...Sd6!
- threat
- 1.Qb2+?
- 1...Sc3
- 2.Qb8+
- 2...Ke4
- 3.Qf4#
- 2...Ke4
- 2.Qb8+
- 1...Ke4!
- 1...Sc3
- 1.Qg3+?
- 1...Ke4
- 2.Qf4#
- 1...Sxg3!
- 1...Ke4
- 1.Qb4?
- threat
- 2.Qxe1#
- 2.Qf4#
- 1...Sd6
- 2.Rxd6
- threat
- 3.Sd7#
- 3.Qd4#
- 3.Qf4#
- threat
- 2.Qxd6+
- 2...Ke4
- 3.Qf4#
- 2...Ke4
- 2.Rxd6
- 1...Rf1!
- threat
- 1.Qxb5+?
- 1...Ke4
- 2.Qd3+
- 2...Ke5
- 3.Qd4#
- 2...Ke5
- 2.Qd3+
- 1...axb5!
- 1...Ke4
- 1.Sg6+?
- Keys
- 1.Rd8!
- threat
- 2.Qc4
- threat
- 3.Qf4#
- 2...Sd4
- 3.Qxd4#
- 2...Rf1
- 3.Qe2#
- 2...Re4
- 3.Qc5#
- 2...Sd6
- 3.Sd7#
- threat
- 2.Qc4
- 1...Ke4
- 2.Qd3+
- 2...Ke5
- 3.Sd7#
- 2...Ke5
- 2.Qd3+
- 1...Sd6
- 2.Sd7+
- 2...Kd4
- 3.Qd3#
- 2...Ke4
- 3.Qd3#
- 2...Kd4
- 2.Sd7+
- 1...Re2
- 2.Qd3
- threat
- 3.Sd7#
- 3.Qxe2#
- 2...Sd4
- 3.Qxd4#
- threat
- 2.Qd3
- 1...Re4
- 2.Qxe6+
- 2...Bxe6
- 3.Sg6#
- 2...Bxe6
- 2.Qxe6+
- 1...Bg8
- 2.Sg6+
- 2...Ke4
- 3.Qd3#
- 2...Ke4
- 2.Qc4
- threat
- 3.Sg6#
- 3.Qf4#
- 2...Sd4
- 3.Qxd4#
- threat
- 2.Qd3
- threat
- 3.Sg6#
- 3.Sd7#
- threat
- 2.Sg6+
- 1...Sf2
- 2.Qg3+
- 2...Ke4
- 3.Qf4#
- 2...Ke4
- 2.Qg3+
- 1...Sg3
- 2.Qxg3+
- 2...Ke4
- 3.Qf4#
- 2...Ke4
- 2.Qxg3+
- 1...Sa3
- 2.Qd3
- threat
- 3.Sd7#
- 3.Qd4#
- threat
- 2.Qb8+
- 2...Ke4
- 3.Qf4#
- 2...Ke4
- 2.Qd3
- 1...Sc3
- 2.Qb8+
- 2...Ke4
- 3.Qf4#
- 2...Ke4
- 2.Qb8+
- 1...Sd4
- 2.Qb8+
- 2...Ke4
- 3.Qf4#
- 2...Ke4
- 2.Qb8+
- 1...Sa7
- 2.Qc4
- threat
- 3.Qd4#
- 3.Qf4#
- 2...Re4
- 3.Qc5#
- 3.Qc7#
- threat
- 2.Qd3
- threat
- 3.Sd7#
- 3.Qd4#
- threat
- 2.Qb4
- threat
- 3.Qxe1#
- 3.Qd4#
- 3.Qf4#
- 2...Re4
- 3.Qc5#
- 3.Qd6#
- 3.Qb8#
- threat
- 2.Qb8+
- 2...Ke4
- 3.Qf4#
- 2...Ke4
- 2.Qc4
- 1...Sc7
- 2.Qb4
- threat
- 3.Qxe1#
- 3.Qd4#
- 3.Qf4#
- 2...Re4
- 3.Qd6#
- 2...Sd5
- 3.Sd7#
- threat
- 2.Qb4
- 1...a5
- 2.Qc4
- threat
- 3.Qf4#
- 2...Sd4
- 3.Qxd4#
- 2...Rf1
- 3.Qe2#
- 2...Re4
- 3.Qxb5#
- 3.Qc5#
- 2...Sd6
- 3.Sd7#
- threat
- 2.Qc4
- threat
- 1.Rd8!
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