MESON Chess Problem Database
Problem Display
PID: 51159 (3b4/3N4/p4p2/2Qn4/3pk1pp/7p/2PPP3/K4R1N w - - 0 1)
Allison, Christopher John
Manchester Guardian, 1951
#2
8 + 9
| 15148 | Sadier Collection | 2016 |
SOLUTION
- SOUND
- Sets
- 1...Sc3
- 2.Qf5#
- 1...Se3
- 2.d3#
- 1...Sb4
- 2.Qf5#
- 1...Sf4
- 2.Sf2#
- 1...Sb6
- 2.Qf5#
- 1...Sc7
- 2.Qf5#
- 1...Se7
- 2.Sxf6#
- 1...d3
- 2.Qc4#
- 2.cxd3#
- 2.exd3#
- 1...Sc3
- Tries
- 1.Sxf6+?
- 1...Ke5
- 2.Qxd5#
- 1...Sxf6
- 2.Qf5#
- 1...Bxf6!
- 1...Ke5
- 1.Rf3?
- threat
- 2.Sf2#
- 2.d3#
- 1...Sb4
- 2.Sf2#
- 2.Qf5#
- 1...Sf4
- 2.Sf2#
- 1...d3
- 2.Sf2#
- 2.Qc4#
- 2.cxd3#
- 1...g3
- 2.d3#
- 1...gxf3!
- threat
- 1.Rf4+?
- 1...Sxf4
- 2.Sf2#
- 1...Kxf4!
- 1...Sxf4
- 1.Rf5?
- threat
- 2.Qxd5#
- 1...Sc3
- 2.Sf2#
- 1...Se3
- 2.Sf2#
- 2.d3#
- 1...Sb4
- 2.Sf2#
- 1...Sf4
- 2.Sf2#
- 1...Sb6
- 2.Sf2#
- 1...Sc7
- 2.Sf2#
- 1...Se7
- 2.Sf2#
- 2.Sxf6#
- 1...Kxf5!
- threat
- 1.Qd6?
- threat
- 2.Sc5#
- 2.Qe6#
- 1...Sf4
- 2.Rxf4#
- 1...Bb6
- 2.Qe6#
- 1...Bc7
- 2.Sc5#
- 1...Sc7
- 2.Sc5#
- 2.Rf4#
- 1...d3!
- threat
- 1.Qb5?
- threat
- 2.Qd3#
- 1...d3
- 2.Qxd3#
- 2.Qc4#
- 1...Sc3
- 2.Qf5#
- 1...Se3
- 2.d3#
- 1...Sb4
- 2.Qf5#
- 1...Sf4
- 2.Sf2#
- 1...Sb6
- 2.Qf5#
- 1...Sc7
- 2.Qf5#
- 1...Se7
- 2.Sxf6#
- 1...axb5!
- threat
- 1.Qc6?
- threat
- 2.Qe6#
- 1...d3
- 2.Qc4#
- 1...Bc7!
- threat
- 1.c3?
- threat
- 2.Qxd4#
- 1...Sxc3
- 2.Qf5#
- 1...dxc3
- 2.Qc4#
- 2.d3#
- 1...Sf4
- 2.Sf2#
- 1...d3
- 2.Qd4#
- 2.Qc4#
- 1...Bb6!
- threat
- 1.e3?
- threat
- 2.Qxd4#
- 1...Sxe3
- 2.d3#
- 1...dxe3
- 2.Qc4#
- 2.d3#
- 1...Sf4
- 2.Rxf4#
- 1...d3
- 2.Qd4#
- 2.Qc4#
- 1...Bb6!
- threat
- 1.Sxf6+?
- Keys
- 1.c4!
- threat
- 2.Qxd5#
- 1...dxc4 ep
- 2.Qc4#
- 2.d3#
- 1...Sc3
- 2.Qf5#
- 1...Se3
- 2.d3#
- 1...Sb4
- 2.Qf5#
- 1...Sf4
- 2.Sf2#
- 1...Sb6
- 2.Qf5#
- 1...Sc7
- 2.Qf5#
- 1...Se7
- 2.Sxf6#
- threat
- 1.c4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- S(f);OGATE::QAB1(G)
- S(f);SBLOCK::P(E)
- S(f);SBLOCK::S(C)
- S(f);N_GUARD,S_CUTB(i)::S(H),XP(h)
- Tries
- Try
- S(H);CHECK,XP(h)
- Vars
- K(c);P-FLIGHT,P_SPINS(f)::QAR1(G),XS(f)
- S(f);OGATE,XS(H)::QAB1(G)
- Refutation
- B(i);XS(H)
- Try
- R(B);
- Threat
- DUALS(2)
- Vars
- S(f);::S(C)
- P(d);::P(E)
- Refutation
- P(d);XR(B)
- Try
- R(B);CHECK
- Vars
- S(f);SBLOCK,XR(B)::S(C)
- Refutation
- K(c);P-FLIGHT,XR(B)
- Try
- R(B);
- Threat
- QAB1(G),XS(f)
- Vars
- S(f);::S(C)
- Refutation
- K(c);P_SPINS(f),S_FLIGHT,XR(B)
- Try
- Q(G);
- Threat
- DUALS(2)
- Vars
- S(f);N_GUARD::R1(B),XS(f)
- B(i);::QAR2(G)
- B(i);::S(H)
- Refutation
- P(b);
- Try
- Q(G);
- Threat
- QAB1(G)
- Vars
- S(f);OGATE::QAB1(G)
- S(f);SBLOCK::P(E)
- S(f);SBLOCK::S(C)
- S(f);N_GUARD,S_CUTB(i)::S(H),XP(h)
- Refutation
- P(g);XQ(G)
- Try
- Q(G);P_PINS(f)
- Threat
- QAR2(G)
- Vars
- P(b);OGATEB::QAR2(G)
- Refutation
- B(i);
- Try
- P(D);
- Threat
- QAR1(G),XP(b)
- Vars
- S(f);OGATE,XP(D)::QAB1(G)
- S(f);SBLOCK::S(C)
- Refutation
- B(i);
- Try
- P(F);
- Threat
- QAR1(G),XP(b)
- Vars
- S(f);SBLOCK,XP(F)::P(E)
- S(f);N_GUARD::R1(B),XS(f)
- Refutation
- B(i);
- Try
- Actual
- P(D);
- Threat
- QAB1(G),XS(f)
- Vars
- S(f);OGATE::QAB1(G)
- S(f);SBLOCK::P(E)
- S(f);SBLOCK::S(C)
- S(f);N_GUARD,S_CUTB(i)::S(H),XP(h)
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).