MESON Chess Problem Database
Problem Display
PID: 224255 (KQ6/p2rP3/B7/8/1B1kP1R1/NR3p2/rn6/n5Nq w - - 0 1)
Mackenzie, Arthur Ford
2nd Prize, Baltimore Sunday News, 1888
#2
10 + 8
| 6490 | yacpdb | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Qg2
- 2.Qh8#
- 1...Qxg1
- 2.Qh8#
- 1...Qh2
- 2.Sxf3#
- 1...Qh4
- 2.Sxf3#
- 1...Qh5
- 2.Sxf3#
- 1...Qh6
- 2.Sxf3#
- 1...Qh7
- 2.Sxf3#
- 1...Qh8
- 2.Sxf3#
- 2.Qxh8#
- 1...Rd5
- 2.e5#
- 1...Rd6
- 2.Qxd6#
- 1...Rb7
- 2.Qd6#
- 1...Rxe7
- 2.Qd6#
- 1...Rd8
- 2.exd8Q#
- 2.exd8R#
- 1...Sc2
- 2.Sxc2#
- 1...Sxb3
- 2.Sc2#
- 1...Sd1
- 2.Rd3#
- 1...Sd3
- 2.Rxd3#
- 1...Sa4
- 2.Rd3#
- 1...Sc4
- 2.Sb5#
- 1...f2
- 2.Se2#
- 1...Qg2
- Tries
- 1.Qf4?
- threat
- 2.Qf6#
- 1...Rd8+
- 2.exd8Q#
- 2.exd8R#
- 1...Rxe7
- 2.Qd6#
- 1...Sxb3
- 2.Sc2#
- 1...Qh2
- 2.Sxf3#
- 1...Qh4
- 2.Sxf3#
- 1...Qh5
- 2.Sxf3#
- 1...Qh6
- 2.Sxf3#
- 1...Rd5
- 2.e5#
- 1...Rd6
- 2.Qxd6#
- 1...Sd3
- 2.Rxd3#
- 1...Sc4
- 2.Sb5#
- 1...Qh8+!
- threat
- 1.Qb5?
- threat
- 2.Qc5#
- 2.e5#
- 1...Rd8+
- 2.exd8Q#
- 2.exd8R#
- 1...Qxg1
- 2.Qc5#
- 1...Sxb3
- 2.Sc2#
- 1...Rd5
- 2.Qxd5#
- 1...Sd3
- 2.Rxd3#
- 1...Qg2
- 2.Qc5#
- 1...Qh2
- 2.Sxf3#
- 2.Qc5#
- 1...Qh3
- 2.Qc5#
- 1...Qh4
- 2.Sxf3#
- 2.Qc5#
- 1...Qh5
- 2.Sxf3#
- 1...Qh6
- 2.Sxf3#
- 2.Qc5#
- 1...Qh7
- 2.Sxf3#
- 2.Qc5#
- 1...Rc7
- 2.Qd5#
- 2.e5#
- 1...Sa4
- 2.Rd3#
- 2.e5#
- 1...f2
- 2.Se2#
- 2.Qc5#
- 1...Qh8+!
- threat
- 1.e8Q?
- threat
- 2.Qbe5#
- 2.Qxd7#
- 2.Qee5#
- 1...Sxb3
- 2.Sc2#
- 1...Sd3
- 2.Rxd3#
- 1...Qh2
- 2.Sxf3#
- 1...Qh5
- 2.Sxf3#
- 1...Qh6
- 2.Sxf3#
- 2.Qbe5#
- 2.Qee5#
- 1...Qh7
- 2.Sxf3#
- 2.Qbe5#
- 2.Qee5#
- 1...Qh8
- 2.Sxf3#
- 2.Qxd7#
- 1...Rd5
- 2.e5#
- 1...Rd6
- 2.Qxd6#
- 1...Rb7
- 2.Qbe5#
- 2.Qd6#
- 2.Qee5#
- 1...Re7
- 2.Qd6#
- 1...Rf7
- 2.Qbe5#
- 2.Qd6#
- 2.Qee5#
- 1...Rg7
- 2.Qbe5#
- 2.Qd6#
- 2.Qee5#
- 1...Rh7
- 2.Qbe5#
- 2.Qd6#
- 2.Qee5#
- 1...Rd8
- 2.Qbxd8#
- 2.Qe5#
- 2.Qexd8#
- 1...Sc4
- 2.Sb5#
- 1...Rc7!
- threat
- 1.e8R?
- threat
- 2.Qe5#
- 1...Sxb3
- 2.Sc2#
- 1...Sd3
- 2.Rxd3#
- 1...Qh2
- 2.Sxf3#
- 1...Qh5
- 2.Sxf3#
- 1...Qh8
- 2.Sxf3#
- 1...Rd5
- 2.e5#
- 1...Rd6
- 2.Qxd6#
- 1...Re7
- 2.Qd6#
- 1...Rd8
- 2.Rxd8#
- 2.Qxd8#
- 1...Sc4
- 2.Sb5#
- 1...Rc7!
- threat
- 1.Qf4?
- Keys
- 1.Qh2!
- 1...Rd8+
- 2.exd8Q#
- 2.exd8R#
- 1...Qxg1
- 2.Qh8#
- 1...Qxh2
- 2.Sxf3#
- 1...Rxa3
- 2.Qxb2#
- 1...Rxe7
- 2.Qd6#
- 1...Sxb3
- 2.Sc2#
- 1...Sd3
- 2.Rxd3#
- 1...Qg2
- 2.Qh8#
- 1...Rd5
- 2.e5#
- 1...Rd6
- 2.Qxd6#
- 1...Rb7
- 2.Qd6#
- 1...Rc7
- 2.Qd6#
- 1...Sc2
- 2.Sxc2#
- 1...Sd1
- 2.Rd3#
- 1...Sa4
- 2.Rd3#
- 1...Sc4
- 2.Sb5#
- 1...f2
- 2.Se2#
- 1...Rd8+
- 1.Qh2!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 4
- Sets
- Q(b);N_GUARD::QAB(J)
- Q(b);N_GUARD,XS(A)::QAB(J)
- Q(b);N_GUARD::S(A),XP(e)
- R(h);SBLOCK::R(F)+P(E)
- R(h);N_GUARD::QAR2(J),XR(h)
- R(h);N_GUARD::QAR2(J)
- R(h);N_GUARD,XP(H)::QAR2(J)
- R(h);OGATE,P_PINQ(J)::PXR(h)=Q
- S(a);N_GUARD::S(B),XS(a)
- S(a);N_GUARD,XR(C)::S(B)
- S(d);N_GUARD::R1(C)
- S(d);N_GUARD::R1(C),XS(d)
- S(d);SBLOCK::S(B)
- P(e);N_GUARD,P_PINP(E)::S(A)
- Tries
- Try
- Q(J);
- Threat
- QAB(J)
- Vars
- R(h);CHECK,OGATE::PXR(h)=Q
- R(h);N_GUARD,XP(H)::QAR2(J)
- S(a);N_GUARD,XR(C)::S(B)
- Q(b);N_GUARD::S(A),XP(e)
- R(h);SBLOCK::QAR(J)+P(E)
- R(h);N_GUARD::QAR2(J),XR(h)
- S(d);N_GUARD::R1(C),XS(d)
- S(d);SBLOCK::S(B)
- Refutation
- Q(b);CHECK
- Try
- Q(J);
- Threat
- DUALS(2)
- Vars
- R(h);CHECK,OGATE::PXR(h)=Q
- Q(b);XS(A)::QAB1(J)
- S(a);N_GUARD,XR(C)::S(B)
- R(h);N_GUARD::QAR1(J),XR(h)
- S(d);N_GUARD::R1(C),XS(d)
- Q(b);::QAB1(J)
- Q(b);N_GUARD::S(A),XP(e)
- Refutation
- Q(b);CHECK
- Try
- P(H);
- Threat
- DUALS(3)
- Vars
- S(a);N_GUARD,XR(C)::S(B)
- S(d);N_GUARD::R1(C),XS(d)
- Q(b);N_GUARD::S(A),XP(e)
- R(h);SBLOCK::R(F)+P(E)
- R(h);N_GUARD::QAR2(J),XR(h)
- R(h);N_GUARD::QAR2(J)
- S(d);SBLOCK::S(B)
- Refutation
- R(h);
- Try
- P(H);
- Threat
- QAB1(J)
- Vars
- S(a);N_GUARD,XR(C)::S(B)
- S(d);N_GUARD::R1(C),XS(d)
- Q(b);N_GUARD::S(A),XP(e)
- R(h);SBLOCK::R(F)+P(E)
- R(h);N_GUARD::QAR2(J),XR(h)
- R(h);N_GUARD::QAR2(J)
- S(d);SBLOCK::S(B)
- Refutation
- R(h);
- Try
- Actual
- Q(J);
- Vars
- R(h);CHECK,OGATE::PXR(h)=Q
- Q(b);N_GUARD,XS(A)::QAB(J)
- Q(b);N_GUARD,XQ(J)::S(A),XP(e)
- R(c);N_GUARD,XS(B)::QAB(J),XS(d)
- R(h);N_GUARD,XP(H)::QAR2(J)
- S(a);N_GUARD,XR(C)::S(B)
- S(d);N_GUARD::R1(C),XS(d)
- Q(b);N_GUARD::QAB(J)
- R(h);SBLOCK::R(F)+P(E)
- R(h);N_GUARD::QAR2(J),XR(h)
- R(h);N_GUARD::QAR2(J)
- S(a);N_GUARD::S(B),XS(a)
- S(d);N_GUARD::R1(C)
- S(d);SBLOCK::S(B)
- P(e);N_GUARD,P_PINP(E)::S(A)
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).