MESON Chess Problem Database
Problem Display
PID: 142254 (2B1r1b1/qp6/1p1R1Rp1/1Q2n3/4kB1b/r2pN3/P1n1N1P1/7K w - - 0 1)
Sydenham, Colin Peter
3rd Prize, Bournemouth, 1989
#2
10 + 12
| 702 | Phenix | 1990 |
| 15513 | Selected Chess Problems of Colin Sydenham | 2015 |
SOLUTION
- SOUND
- Sets
- 1...Rxa2
- 2.Sc3#
- 1...Rc3
- 2.Sxc3#
- 1...Ra4
- 2.Sc3#
- 1...Ra5
- 2.Sc3#
- 1...Ra6
- 2.Sc3#
- 1...Re6
- 2.Qd5#
- 1...Rxc8
- 2.Qxe5#
- 1...Rd8
- 2.Qxe5#
- 1...Rf8
- 2.Qxe5#
- 1...Bg3
- 2.Sxg3#
- 1...Bg5
- 2.Sg3#
- 1...Bb3
- 2.Sc3#
- 1...Bd5
- 2.Qxd5#
- 1...Be6
- 2.Qxe5#
- 1...Bh7
- 2.Qd5#
- 1...Sa1
- 2.Rd4#
- 1...Se1
- 2.Rd4#
- 1...Sxe3
- 2.Rd4#
- 1...Sb4
- 2.Rd4#
- 1...Sd4
- 2.Rxd4#
- 1...Sf7
- 2.Qd5#
- 1...g5
- 2.Bf5#
- 1...Rxa2
- Tries
- 1.Be6?
- threat
- 2.Qd5#
- 2.Qxe5#
- 1...Rxe6
- 2.Qd5#
- 1...Bxf6
- 2.Qd5#
- 1...Bxe6
- 2.Qxe5#
- 1...Sxe3
- 2.Rd4#
- 2.Qxe5#
- 1...Ra5
- 2.Sc3#
- 1...Sb4
- 2.Rd4#
- 2.Qxe5#
- 1...Sf3
- 2.Qd5#
- 1...Sc4
- 2.Qd5#
- 1...Sg4
- 2.Qd5#
- 1...Sc6
- 2.Qd5#
- 1...Sd7
- 2.Qd5#
- 1...Sf7
- 2.Bd5#
- 2.Qd5#
- 1...Qa5!
- threat
- 1.Rde6?
- threat
- 2.Qd5#
- 2.Qxe5#
- 1...Rxe6
- 2.Qd5#
- 1...Bxf6
- 2.Qd5#
- 1...Bxe6
- 2.Qxe5#
- 1...Sxe3
- 2.Qxe5#
- 1...dxe2
- 2.Qd5#
- 1...Qa5
- 2.Bxb7#
- 1...Qb8
- 2.Qd5#
- 1...Rd8
- 2.Rxe5#
- 2.Qxe5#
- 1...Sb4
- 2.Qc4#
- 2.Qxb4#
- 2.Qxe5#
- 1...d2
- 2.Qd5#
- 1...Ra5!
- threat
- 1.Rxg6?
- threat
- 2.Bf5#
- 1...Rxc8
- 2.Qxe5#
- 1...Sxe3
- 2.Rd4#
- 1...Re6
- 2.Qd5#
- 1...Rf8
- 2.Qxe5#
- 1...Be6
- 2.Qxe5#
- 1...Sd4
- 2.Rxd4#
- 1...Sd7
- 2.Qf5#
- 1...dxe2!
- threat
- 1.Be6?
- Keys
- 1.Rfe6!
- threat
- 2.Qd5#
- 2.Qxe5#
- 1...Rxe6
- 2.Qd5#
- 1...Bxe6
- 2.Qxe5#
- 1...Sxe3
- 2.Qxe5#
- 1...dxe2
- 2.Qxe5#
- 1...Qa5
- 2.Bxb7#
- 1...Ra5
- 2.Qxd3#
- 1...Bf6
- 2.Qd5#
- 1...Sb4
- 2.Rd4#
- 2.Qc4#
- 2.Qxb4#
- 2.Qxe5#
- threat
- 1.Rfe6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 3
- REMOVED MATES = 18
- Sets
- R(b);N_GUARD,XP(B)::S(C)
- R(b);N_GUARD::S(C),XR(b)
- R(b);N_GUARD::S(C)
- R(k);S_CUTB(l)::QAB1(G)
- R(k);N_GUARD,XB(J)::QAR1(G),XS(f)
- R(k);N_GUARD::QAR1(G),XS(f)
- B(e);N_GUARD::S(C),XB(e)
- B(e);N_GUARD::S(C)
- B(l);S_CUTR(b)::S(C)
- B(l);N_GUARD::QAB1(G),XB(l)
- B(l);S_CUTR(k)::QAR1(G),XS(f)
- B(l);N_GUARD::QAB1(G)
- S(a);N_GUARD::R1(H)
- S(a);N_GUARD,XS(E)::R1(H)
- S(a);N_GUARD::R1(H),XS(a)
- S(f);S_CUTB(l)::QAB1(G)
- P(h);N_GUARD::B(J)
- Tries
- Try
- B(J);
- Threat
- DUALS(2)
- Vars
- R(k);XB(J)::QAB1(G)
- B(e);XR(I)::QAB1(G)
- B(l);XB(J)::QAR1(G),XS(f)
- R(b);N_GUARD::S(C)
- S(f);::QAB1(G)
- Refutation
- Q(i);
- Try
- R(H);P_PINS(f)
- Threat
- DUALS(2)
- Vars
- R(k);N_SPINS(f),XR(H)::QAB1(G)
- B(e);XR(I)::QAB1(G)
- B(l);N_SPINS(f),XR(H)::QAR1(G),XS(f)
- S(a);XS(E)::QAR1(G),XS(f)
- P(c);XS(C)::QAB1(G)
- Q(i);N_GUARD::B(J),XP(j)
- Q(i);::QAB1(G)
- P(c);::QAB1(G)
- Refutation
- R(b);
- Try
- R(I);XP(h)
- Threat
- B(J)
- Vars
- R(k);N_GUARD,XB(J)::QAR1(G),XS(f)
- S(a);N_GUARD,XS(E)::R1(H)
- R(k);S_CUTB(l)::QAB1(G)
- R(k);N_GUARD::QAR1(G),XS(f)
- B(l);S_CUTR(k)::QAR1(G),XS(f)
- S(a);N_GUARD::R1(H),XS(a)
- S(f);OGATE::QAB1(G)
- Refutation
- P(c);XS(C)
- Try
- Actual
- R(I);P_PINS(f)
- Threat
- DUALS(2)
- Vars
- R(k);N_SPINS(f),XR(I)::QAB1(G)
- B(l);N_SPINS(f),XR(I)::QAR1(G),XS(f)
- S(a);XS(E)::QAR1(G),XS(f)
- P(c);XS(C)::QAR1(G),XS(f)
- Q(i);N_GUARD::B(J),XP(j)
- R(b);N_GUARD::QAB1(G),XP(c)
- B(e);::QAB1(G)
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