MESON Chess Problem Database
Problem Display
PID: 42933 (1Bb1N2q/4RBn1/p1r4p/2p1p3/K1P1k2p/5R2/4NQ2/b2r1n2 w - - 0 1)
Sydenham, Colin Peter
Comm., Northwest Chess, 1978
#2
9 + 13
| 56 | The Problemist | 1980 |
| 15513 | Selected Chess Problems of Colin Sydenham | 2015 |
SOLUTION
- SOUND
- Sets
- 1...Rb1
- 2.Bd5#
- 1...Rc1
- 2.Bd5#
- 1...Re1
- 2.Bd5#
- 1...Rd3
- 2.Rf4#
- 1...Rd4
- 2.Rxe5#
- 1...Rd5
- 2.Bxd5#
- 1...Rf6
- 2.Sxf6#
- 1...Rc7
- 2.Sf6#
- 1...Bc3
- 2.Sxc3#
- 1...Bd4
- 2.Bd5#
- 1...Be6
- 2.Sf6#
- 1...Sd2
- 2.Bd5#
- 2.Re3#
- 2.Qe3#
- 1...Sh2
- 2.Re3#
- 2.Qe3#
- 1...Se3
- 2.Rxe3#
- 2.Qxe3#
- 1...Sg3
- 2.Re3#
- 2.Qe3#
- 1...Se6
- 2.Bg6#
- 1...Rb1
- Tries
- 1.Sg3+?
- 1...Sxg3
- 2.Qe3#
- 1...hxg3!
- 1...Sxg3
- 1.Ra3?
- threat
- 2.Qf3#
- 2.Qf4#
- 1...Rd3
- 2.Qf4#
- 1...Re6
- 2.Qf3#
- 1...Rf6
- 2.Sxf6#
- 1...Bg4
- 2.Qf4#
- 1...Be6
- 2.Sf6#
- 2.Qf3#
- 1...Sd2
- 2.Bd5#
- 2.Re3#
- 2.Qf4#
- 1...Sh2
- 2.Re3#
- 2.Qf4#
- 1...Se3
- 2.Rxe3#
- 2.Qf4#
- 1...Sh5
- 2.Qf3#
- 1...Se6
- 2.Bg6#
- 2.Qf3#
- 1...Bc3!
- threat
- 1.Rb3?
- threat
- 2.Qf3#
- 2.Qf4#
- 1...Rd3
- 2.Qf4#
- 1...Re6
- 2.Qf3#
- 1...Rf6
- 2.Sxf6#
- 1...Bg4
- 2.Qf4#
- 1...Be6
- 2.Sf6#
- 2.Qf3#
- 1...Sd2
- 2.Bd5#
- 2.Re3#
- 2.Qf4#
- 1...Sh2
- 2.Re3#
- 2.Qf4#
- 1...Se3
- 2.Rxe3#
- 2.Qf4#
- 1...Sh5
- 2.Qf3#
- 1...Se6
- 2.Bg6#
- 2.Qf3#
- 1...Bc3!
- threat
- 1.Rc3?
- threat
- 2.Rxe5#
- 2.Qf3#
- 2.Qf4#
- 1...Qxe8
- 2.Qf3#
- 2.Qf4#
- 1...Sxe8
- 2.Qf3#
- 2.Qf4#
- 1...Rd3
- 2.Rxe5#
- 2.Qf4#
- 1...Rd5
- 2.Bxd5#
- 2.Qf3#
- 2.Qf4#
- 1...Rdd6
- 2.Qf3#
- 2.Qf4#
- 1...Rcd6
- 2.Qf3#
- 2.Qf4#
- 1...Re6
- 2.Qf3#
- 1...Rf6
- 2.Sxf6#
- 2.Rxe5#
- 1...Rc7
- 2.Sf6#
- 2.Qf3#
- 2.Qf4#
- 1...Bg4
- 2.Rxe5#
- 2.Qf4#
- 1...Be6
- 2.Sf6#
- 2.Qf3#
- 1...Sd2
- 2.Bd5#
- 2.Re3#
- 2.Rxe5#
- 2.Qf4#
- 1...Sh2
- 2.Re3#
- 2.Rxe5#
- 2.Qf4#
- 1...Se3
- 2.Rxe3#
- 2.Rxe5#
- 2.Qf4#
- 1...Sf5
- 2.Qg2#
- 2.Qf3#
- 2.Qf4#
- 1...Sh5
- 2.Qf3#
- 1...Se6
- 2.Bg6#
- 2.Qf3#
- 1...Bxc3!
- threat
- 1.Qxh4+?
- 1...Bg4
- 2.Qxg4#
- 1...Kxf3!
- 1...Bg4
- 1.Sg3+?
- Keys
- 1.Sd4!
- threat
- 2.Bd5#
- 2.Rxe5#
- 1...Qxe8
- 2.Bd5#
- 1...Rxd4
- 2.Rxe5#
- 1...Bxd4
- 2.Bd5#
- 1...Sxe8
- 2.Bd5#
- 1...Se3
- 2.Qxe3#
- 1...Qg8
- 2.Rxe5#
- 1...Rd6
- 2.Sxd6#
- 1...Re6
- 2.Qxh4#
- 1...Rc7
- 2.Sd6#
- 2.Sf6#
- 2.Bd5#
- 1...Be6
- 2.Sf6#
- 1...Sf5
- 2.Bd5#
- 1...Sh5
- 2.Bd5#
- 1...Se6
- 2.Bg6#
- threat
- 1.Sd4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 8
- REMOVED MATES = 8
- Sets
- R(b);N_GUARD::B(G)
- R(b);SBLOCK::R1(C)
- R(b);P_PINP(E),S_CUTB(a)::R1(F),XP(g)
- R(b);N_GUARD::B(G),XR(b)
- R(i);N_GUARD::S(I),XR(i)
- R(i);N_GUARD::S(I)
- B(a);N_GUARD::S(A),XB(a)
- B(a);S_CUTR(b)::B(G)
- B(l);N_SPINP(g),S_CUTR(i)::S(I)
- S(k);N_GUARD,N_SPINP(g),S_CUTB(l),S_CUTR(i)::B(G)
- Tries
- Try
- S(A);CHECK
- Vars
- S(c);XS(A)::QAR1(B)
- Refutation
- P(e);XS(A)
- Try
- R(C);
- Threat
- DUALS(2)
- Vars
- R(b);::QAR1(B)
- R(i);N_SPINP(g)::QAB1(B)
- R(i);N_GUARD::S(I),XR(i)
- B(l);::QAR1(B)
- S(k);::QAB1(B)
- Refutation
- B(a);
- Try
- R(C);
- Threat
- DUALS(2)
- Vars
- R(b);::QAR1(B)
- R(i);N_SPINP(g)::QAB1(B)
- R(i);N_GUARD::S(I),XR(i)
- B(l);::QAR1(B)
- S(k);::QAB1(B)
- Refutation
- B(a);
- Try
- R(C);
- Threat
- DUALS(3)
- Vars
- R(i);N_SPINP(g)::QAB1(B)
- S(k);::QAB1(B)
- Refutation
- B(a);XR(C)
- Try
- Q(B);CHECK,XP(e)
- Vars
- B(l);N_GUARD,P_SPINB(l)::QAR2(B),XB(l)
- Refutation
- K(d);N_SPINP(g),S_FLIGHT,XR(C)
- Try
- Actual
- S(A);
- Threat
- DUALS(2)
- Vars
- Q(m);XS(I)::B(G)
- R(b);P_PINP(E),XS(A)::R1(F),XP(g)
- B(a);XS(A)::B(G)
- S(k);XS(I)::B(G)
- S(c);N_GUARD::QAR1(B),XS(c)
- Q(m);::R1(F),XP(g)
- R(i);N_GUARD::S(I),XR(i)
- R(i);N_SPINP(g),S_CUTB(l)::QAR(B),XP(e)
- B(l);N_SPINP(g),S_CUTR(i)::S(I)
- S(k);::B(G)
- S(k);N_GUARD,N_SPINP(g),S_CUTB(l),S_CUTR(i)::B(G)
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