MESON Chess Problem Database
Problem Display
PID: 55061 (bB3r2/q3p2R/Q2N4/r2n4/2p2PkP/2bp1RN1/4BnPK/8 w - - 0 1)
Sydenham, Colin Peter
1st Prize=, Die Schwalbe, 1983/I
#2
11 + 11
| 3748 | FIDE Album (1983-1985) | 1992 |
| 4640 | Chess Wizardry: The New ABC of Chess Problems | 1996 |
| 15513 | Selected Chess Problems of Colin Sydenham | 2015 |
SOLUTION
- SOUND
- Sets
- 1...Sh3
- 2.gxh3#
- 1...d2
- 2.Rxf2#
- 1...Sh3
- Tries
- 1.Sde4?
- threat
- 2.Rxd3#
- 2.Qg6#
- 1...Qxb8
- 2.Sxf2#
- 2.Qg6#
- 1...Qxa6
- 2.Sxf2#
- 2.Rxd3#
- 1...Rxa6
- 2.Rxd3#
- 1...Rxf4
- 2.Rxf4#
- 2.Qg6#
- 1...Rxb8
- 2.Qe6#
- 2.Qg6#
- 1...Sxe4
- 2.Rxd3#
- 1...Sxf4
- 2.Rxf4#
- 1...dxe2
- 2.Qg6#
- 1...Qe3
- 2.Qg6#
- 1...Qb6
- 2.Rxd3#
- 1...Qc7
- 2.Sxf2#
- 2.Qg6#
- 1...Ra2
- 2.Qg6#
- 1...Rf5
- 2.Rxd3#
- 1...Rf6
- 2.Rxd3#
- 1...Rg8
- 2.Rxd3#
- 2.Qe6#
- 1...Be5
- 2.Qg6#
- 1...Bf6
- 2.Rxd3#
- 2.Qe6#
- 1...Bc6
- 2.Rxd3#
- 1...Sh3
- 2.Rxd3#
- 2.gxh3#
- 1...Se3
- 2.Sxf2#
- 1...Sb4
- 2.Rxd3#
- 1...Sb6
- 2.Sxf2#
- 2.Rxd3#
- 1...Sf6
- 2.Rxd3#
- 1...d2
- 2.Rxf2#
- 2.Rxc3#
- 2.Rd3#
- 2.Re3#
- 2.Qg6#
- 1...e5
- 2.Qg6#
- 1...e6
- 2.Rxd3#
- 1...Sc7!
- threat
- 1.Sb5?
- threat
- 2.Rxd3#
- 2.Qg6#
- 1...Qxb8
- 2.Qg6#
- 1...Qxa6
- 2.Rxd3#
- 1...Rxa6
- 2.Rxd3#
- 1...Rxf4
- 2.Rxf4#
- 2.Qg6#
- 1...Rxb8
- 2.Qe6#
- 2.Qg6#
- 1...Sxf4
- 2.Rxf4#
- 1...dxe2
- 2.Qg6#
- 1...Qe3
- 2.Qg6#
- 1...Qb6
- 2.Rxd3#
- 1...Qc7
- 2.Qg6#
- 1...Ra2
- 2.Qg6#
- 1...Rf5
- 2.Rxd3#
- 1...Rf6
- 2.Rxd3#
- 1...Rg8
- 2.Rxd3#
- 2.Qe6#
- 1...Be5
- 2.Qg6#
- 1...Bf6
- 2.Rxd3#
- 2.Qe6#
- 1...Bc6
- 2.Rxd3#
- 1...Sh3
- 2.Rxd3#
- 2.gxh3#
- 1...Se4
- 2.Rxd3#
- 1...Se3
- 2.Qg6#
- 1...Sb4
- 2.Qg6#
- 1...Sf6
- 2.Qe6#
- 1...Sc7
- 2.Qg6#
- 1...d2
- 2.Rxf2#
- 2.Rxc3#
- 2.Rd3#
- 2.Re3#
- 2.Qg6#
- 1...e5
- 2.Qg6#
- 1...e6
- 2.Rxd3#
- 1...Sb6!
- threat
- 1.Sde4?
- Keys
- 1.Sdf5!
- threat
- 2.Rxd3#
- 2.Qg6#
- 1...Qxb8
- 2.Qg6#
- 1...Qxa6
- 2.Rxd3#
- 1...Rxa6
- 2.Rxd3#
- 1...Rxf5
- 2.Rxd3#
- 1...Rxb8
- 2.Qg6#
- 1...Sxf4
- 2.Rxf4#
- 1...dxe2
- 2.Qg6#
- 1...Qe3
- 2.Qg6#
- 1...Qb6
- 2.Rxd3#
- 1...Qc7
- 2.Qg6#
- 1...Ra2
- 2.Qg6#
- 1...Rf6
- 2.Rxd3#
- 1...Rg8
- 2.Rxd3#
- 1...Be5
- 2.Qg6#
- 1...Bf6
- 2.Rxd3#
- 1...Bc6
- 2.Rxd3#
- 1...Sh3
- 2.Rxd3#
- 2.gxh3#
- 1...Se4
- 2.Rxd3#
- 1...Se3
- 2.Qg6#
- 1...Sb4
- 2.Qg6#
- 1...Sb6
- 2.Se3#
- 1...Sf6
- 2.Rg7#
- 1...Sc7
- 2.Qg6#
- 1...d2
- 2.Rxf2#
- 2.Rxc3#
- 2.Rd3#
- 2.Re3#
- 2.Qg6#
- 1...e5
- 2.Qg6#
- 1...e6
- 2.Rxd3#
- threat
- 1.Sdf5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 24
- REMOVED MATES = 2
- Sets
- S(a);OGATE::P(B),XS(a)
- P(c);N_GUARD::B(A)+R(D),XS(a)
- Tries
- Try
- S(I);
- Threat
- DUALS(2)
- Vars
- R(f);XQ(H)::B(A)+R(D),XP(c)
- S(a);XS(I)::B(A)+R(D),XP(c)
- S(g);OGATE,XP(F)::B(A)+R(D),DCHECK,XS(g)
- P(c);XB(A)::QAR2(H)
- Q(h);::QAR2(H)
- Q(h);::B(A)+R(D),XP(c)
- R(f);::QAR2(H)
- R(k);::B(A)+R(D),XP(c)
- B(b);::QAR2(H)
- B(j);::B(A)+R(D),XP(c)
- S(g);S_CUTQ(h)::S(I),XS(a)
- S(g);::B(A)+R(D),XP(c)
- P(i);::QAR2(H)
- P(i);::B(A)+R(D),XP(c)
- Refutation
- S(g);
- Try
- S(I);
- Threat
- DUALS(2)
- Vars
- Q(h);XB(K)::QAR2(H)
- Q(h);XQ(H)::B(A)+R(D),XP(c)
- R(f);XQ(H)::B(A)+R(D),XP(c)
- S(g);OGATE,XP(F)::B(A)+R(D),DCHECK,XS(g)
- P(c);XB(A)::QAR2(H)
- Q(h);::QAR2(H)
- Q(h);::B(A)+R(D),XP(c)
- R(f);::QAR2(H)
- R(k);::B(A)+R(D),XP(c)
- B(b);::QAR2(H)
- B(j);::B(A)+R(D),XP(c)
- S(a);::B(A)+R(D),XP(c)
- S(g);::QAR2(H)
- S(g);S_CUTR(k)::QAB(H)
- P(i);::QAR2(H)
- P(i);::B(A)+R(D),XP(c)
- Refutation
- S(g);
- Try
- Actual
- S(I);
- Threat
- DUALS(2)
- Vars
- Q(h);XB(K)::QAR2(H)
- Q(h);XQ(H)::B(A)+R(D),XP(c)
- R(f);XQ(H)::B(A)+R(D),XP(c)
- R(k);XS(I)::B(A)+R(D),XP(c)
- R(k);XB(K)::QAR2(H)
- S(g);OGATE,XP(F)::B(A)+R(D),DCHECK,XS(g)
- P(c);XB(A)::QAR2(H)
- Q(h);::QAR2(H)
- Q(h);::B(A)+R(D),XP(c)
- R(f);::QAR2(H)
- R(k);::B(A)+R(D),XP(c)
- B(b);::QAR2(H)
- B(b);::B(A)+R(D),XP(c)
- B(j);::B(A)+R(D),XP(c)
- S(a);::B(A)+R(D),XP(c)
- S(g);::QAR2(H)
- S(g);N_GUARD,S_CUTQ(h)::S(I)
- S(g);S_CUTB(b)::R(J)
- P(i);::QAR2(H)
- P(i);::B(A)+R(D),XP(c)
Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) &
CSS/Javascript (jQuery, Bootstrap & DataTables).