MESON Chess Problem Database
Problem Display
PID: 64946 (1b1r4/4pp2/1B2N3/1P1pkP2/3RNRPQ/3p4/BK6/8 w - - 0 1)
Sydenham, Colin Peter
2nd Prize, Problem Observer, 1988
#2
11 + 7
| 5159 | FIDE Album (1986-1988) (Annexe) | 1996 |
| 15513 | Selected Chess Problems of Colin Sydenham | 2015 |
SOLUTION
- SOUND
- Sets
- 1...Rc8
- 2.Rxd5#
- 1...Re8
- 2.Rxd5#
- 1...Rf8
- 2.Rxd5#
- 1...Rg8
- 2.Rxd5#
- 1...Rh8
- 2.Rxd5#
- 1...Bd6
- 2.Rxd5#
- 1...dxe4
- 2.Rfxe4#
- 1...Rc8
- Tries
- 1.S4g5?
- threat
- 2.Sxf7#
- 1...Kd6
- 2.Rxd5#
- 1...Kf6
- 2.Sf3#
- 1...fxe6
- 2.Sf7#
- 1...f6
- 2.Sf7#
- 1...Rf8!
- threat
- 1.Sd6?
- threat
- 2.Sxf7#
- 2.Rxd5#
- 1...Kxd6
- 2.Rxd5#
- 1...Bxd6
- 2.Rxd5#
- 1...exd6
- 2.Rxd5#
- 1...fxe6
- 2.Sf7#
- 1...Rf8
- 2.Rxd5#
- 1...f6
- 2.Sf7#
- 2.Rxd5#
- 1...Rxd6!
- threat
- 1.Bc7+?
- 1...Rd6
- 2.Rxd5#
- 1...Bxc7!
- 1...Rd6
- 1.Bxd8?
- threat
- 2.Rxd5#
- 1...dxe4
- 2.Rd5#
- 2.Rfxe4#
- 1...fxe6!
- threat
- 1.Rf1?
- threat
- 2.Qg3#
- 2.Qh2#
- 1...Rh8
- 2.Qg3#
- 1...dxe4!
- threat
- 1.Rf2?
- threat
- 2.Qg3#
- 2.Qh2#
- 1...Rh8
- 2.Qg3#
- 1...dxe4!
- threat
- 1.Rf3?
- threat
- 2.Qg3#
- 2.Qh2#
- 1...Rh8
- 2.Qg3#
- 1...dxe4!
- threat
- 1.Qxe7?
- threat
- 2.Qf6#
- 1...dxe4
- 2.Rdxe4#
- 2.Rfxe4#
- 1...f6
- 2.Qxf6#
- 1...fxe6!
- threat
- 1.Qh2?
- threat
- 2.Rf1#
- 2.Rf2#
- 2.Rf3#
- 1...Rh8
- 2.Rxd5#
- 1...dxe4!
- threat
- 1.Qh8+?
- 1...Rxh8
- 2.Rxd5#
- 1...f6!
- 1...Rxh8
- 1.S4g5?
- Keys
- 1.S6c5!
- threat
- 2.Sxd3#
- 1...Kxd4
- 2.Sd7#
- 1...Kxf4
- 2.Qg3#
- 1...dxe4
- 2.Rfxe4#
- 1...d2
- 2.Sd3#
- threat
- 1.S6c5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 6
- Sets
- R(g);N_GUARD::R1(C),XP(b)
- B(f);S_CUTR(g)::R1(C),XP(b)
- P(b);OGATE,XS(D)::R1(E),XP(b)
- Tries
- Try
- S(D);
- Threat
- S(D),XP(e)
- Vars
- K(c);P_SPINP(b),S_FLIGHT::R1(C),XP(b)
- K(c);S_FLIGHT::QAB(G)+S(D)
- P(e);XS(K)::S(D)
- P(e);::S(D)
- Refutation
- R(g);
- Try
- S(D);
- Threat
- DUALS(2)
- Vars
- K(c);P_SPINP(b),S_FLIGHT,XS(D)::R1(C),XP(b)
- B(f);XS(D)::R1(C),XP(b)
- P(d);XS(D)::R1(C),XP(b)
- P(e);XS(K)::S(D)
- R(g);::R1(C),XP(b)
- Refutation
- R(g);XS(D)
- Try
- B(J);CHECK
- Vars
- R(g);P_SPINR(g)::R1(C),XP(b)
- Refutation
- B(f);XB(J)
- Try
- B(J);XR(g)
- Threat
- R1(C),XP(b)
- Refutation
- P(e);XS(K)
- Try
- R(E);
- Threat
- DUALS(2)
- Vars
- R(g);::QAB(G)
- Refutation
- P(b);XS(D)
- Try
- R(E);
- Threat
- DUALS(2)
- Vars
- R(g);::QAB(G)
- Refutation
- P(b);XS(D)
- Try
- R(E);
- Threat
- DUALS(2)
- Vars
- R(g);::QAB(G)
- Refutation
- P(b);XS(D)
- Try
- Q(G);XP(d)
- Threat
- QAB1(G)
- Vars
- P(e);::QAB1(G),XP(e)
- Refutation
- P(e);P_SPINP(e),XS(K)
- Try
- Q(G);
- Threat
- DUALS(3)
- Vars
- R(g);N_GUARD::R1(C),XP(b)
- Refutation
- P(b);XS(D)
- Try
- Q(G);CHECK
- Vars
- R(g);XQ(G)::R1(C),XP(b)
- Refutation
- P(e);P_SPINP(e)
- Try
- Actual
- S(K);
- Threat
- S(K),XP(a)
- Vars
- K(c);S_FLIGHT,XR(C)::B(J)+S(K)
- K(c);OGATEB,S_FLIGHT,XR(E)::QAB1(G)
- P(b);OGATE,XS(D)::R1(E),XP(b)
- P(a);::S(K)
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