MESON Chess Problem Database
Problem Display
PID: 68292 (4q1n1/5Q2/2p1b3/2p4R/1pNkr3/nR4B1/KP1N1P2/7B w - - 0 1)
Sydenham, Colin Peter
4th HM., The Problemist, 1988
#2
10 + 9
| 56 | The Problemist | 2006 |
| 15513 | Selected Chess Problems of Colin Sydenham | 2015 |
SOLUTION
- SOUND
- Sets
- 1...Re3
- 2.fxe3#
- 1...Rf4
- 2.Qxf4#
- 1...Rg4
- 2.Be5#
- 1...Rh4
- 2.Be5#
- 1...Re5
- 2.Bxe5#
- 1...Bh3
- 2.Sf3#
- 1...Bxc4
- 2.Sf3#
- 1...Bf5
- 2.Sf3#
- 1...Bd7
- 2.Sf3#
- 1...Bc8
- 2.Sf3#
- 1...Sxc4
- 2.Sf3#
- 1...Re3
- Tries
- 1.Bxe4?
- threat
- 2.Be5#
- 2.Rd3#
- 1...Bxf7
- 2.Rd3#
- 1...Sxc4
- 2.Rd3#
- 1...Qb8
- 2.Rd3#
- 1...Bh3
- 2.Rd3#
- 1...Bg4
- 2.Rd3#
- 1...Bd5
- 2.Rd3#
- 1...Bf5
- 2.Rd3#
- 1...Bd7
- 2.Rd3#
- 1...Bc8
- 2.Rd3#
- 1...Bxc4!
- threat
- 1.Be5+?
- 1...Kd5
- 2.Se3#
- 2.Sb6#
- 2.Bxe4#
- 2.Bc3#
- 2.Bf6#
- 2.Bg7#
- 2.Bh8#
- 2.Rd3#
- 1...Rxe5!
- 1...Kd5
- 1.Qf3?
- threat
- 2.Rd3#
- 2.Qxe4#
- 2.Qd3#
- 1...Bf5
- 2.Rd3#
- 2.Qd3#
- 1...Re1
- 2.Rd3#
- 2.Qd3#
- 1...Qg6
- 2.Rd3#
- 2.Qd3#
- 1...Re2
- 2.Rd3#
- 2.Qd3#
- 1...Re3
- 2.Qxe3#
- 2.fxe3#
- 1...Rf4
- 2.Rd3#
- 2.Qd3#
- 2.Qe3#
- 2.Qxf4#
- 1...Rg4
- 2.Be5#
- 2.Rd3#
- 2.Qd3#
- 2.Qe3#
- 1...Rh4
- 2.Be5#
- 2.Rd3#
- 2.Qd3#
- 2.Qe3#
- 1...Re5
- 2.Bxe5#
- 2.Rd3#
- 2.Qd3#
- 1...Bh3
- 2.Rd3#
- 2.Qd3#
- 1...Bg4
- 2.Rd3#
- 2.Qd3#
- 1...Bd5
- 2.Rd3#
- 2.Qd3#
- 1...Bd7
- 2.Rd3#
- 2.Qd3#
- 1...Bf7
- 2.Rd3#
- 2.Qd3#
- 1...Bc8
- 2.Rd3#
- 2.Qd3#
- 1...Sf6
- 2.Rd3#
- 2.Qd3#
- 1...Bxc4!
- threat
- 1.Qf6+?
- 1...Re5
- 2.Bxe5#
- 2.Qxe5#
- 1...Sxf6!
- 1...Re5
- 1.Qg7+?
- 1...Re5
- 2.Bxe5#
- 2.Qxe5#
- 1...Sf6!
- 1...Re5
- 1.Bxe4?
- Keys
- 1.Se5!
- threat
- 2.Sef3#
- 1...Bxb3+
- 2.Sxb3#
- 1...Kd5
- 2.Rd3#
- 1...Qxf7
- 2.Sxc6#
- 1...Rxe5
- 2.Bxe5#
- 1...Re3
- 2.fxe3#
- 1...Rf4
- 2.Qxf4#
- 1...Bg4
- 2.Rd3#
- threat
- 1.Se5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 8
- Sets
- R(d);OGATE::P(E),XR(d)
- R(d);OGATEB::QAR2(J),XR(d)
- R(d);N_GUARD::B(G)
- R(d);N_GUARD::B(G),XR(d)
- B(g);::S(D)
- B(g);P_PINR(F),XS(H)::S(D)
- S(a);SBLOCK,XS(H)::S(D)
- Tries
- Try
- B(A);XR(d)
- Threat
- DUALS(2)
- Vars
- B(g);XQ(J)::R1(F)
- S(a);XS(H)::R1(F)
- Q(h);::R1(F)
- B(g);::R1(F)
- Refutation
- B(g);P_PINR(F),XS(H)
- Try
- B(G);CHECK
- Refutation
- R(d);XB(G)
- Try
- Q(J);
- Threat
- DUALS(3)
- Refutation
- B(g);P_PINR(F),XS(H)
- Try
- Q(J);CHECK
- Refutation
- S(i);XQ(J)
- Try
- Q(J);CHECK
- Refutation
- S(i);P_SPINS(i)
- Try
- Actual
- S(H);P_SPINR(F)
- Threat
- S(H)
- Vars
- B(g);CHECK,XR(F)::S(D),XB(g)
- K(c);N_PINR(F),P-FLIGHT,P_SPINB(g),P_SPINR(d)::R(F)
- Q(h);N_GUARD,XQ(J)::S(H),XP(f)
- R(d);OGATE,XS(H)::B(G),XR(d)
- R(d);OGATE::P(E),XR(d)
- R(d);OGATEB::QAR2(J),XR(d)
- B(g);N_PINR(F)::R1(F)
Developed and maintained by Brian Stephenson.
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