MESON Chess Problem Database
Problem Display
PID: 58018 (Q7/2p1pP2/P1NpRp2/pN1knp2/Bp3n1R/1P6/2K5/6B1 w - - 0 1)
Mackenzie, Arthur Ford
British Chess Magazine, 1884
#2
11 + 10
SOLUTION
- SOUND
- Sets
- 1...Se2
- 2.Sxc7#
- 1...Sg2
- 2.Sxc7#
- 1...Sfd3
- 2.Sxc7#
- 1...Sh3
- 2.Sxc7#
- 1...Sh5
- 2.Sxc7#
- 1...Sxe6
- 2.Sxb4#
- 2.Sxe7#
- 1...Sfg6
- 2.Sxc7#
- 1...Sed3
- 2.Sxc7#
- 1...Sf3
- 2.Sxc7#
- 1...Sc4
- 2.Sxc7#
- 1...Sg4
- 2.Sxc7#
- 1...Sxc6
- 2.Sxc7#
- 1...Seg6
- 2.Sxc7#
- 1...Sd7
- 2.Sxc7#
- 1...Sxf7
- 2.Sxc7#
- 1...Se2
- Tries
- 1.Sc3+?
- 1...Kxe6
- 2.Sd8#
- 1...bxc3!
- 1...Kxe6
- 1.Scd4+?
- 1...Kc5
- 2.Se2#
- 2.Sf3#
- 2.Sxf5#
- 1...Sc6
- 2.Qxc6#
- 1...c6!
- 1...Kc5
- 1.Sd8+?
- 1...Sc6
- 2.Sxc7#
- 2.Qxc6#
- 1...c6!
- 1...Sc6
- 1.Rxe7?
- threat
- 2.Sxb4#
- 1...Sxc6
- 2.Sxc7#
- 1...Ke4!
- threat
- 1.Qc8?
- 1...Kxc6
- 2.Sc3#
- 2.Sxc7#
- 1...Sxe6
- 2.Sxe7#
- 1...Sxc6
- 2.Sxc7#
- 1...Sxf7
- 2.Sxc7#
- 2.Sxe7#
- 1...Se2
- 2.Sxc7#
- 2.Sxe7#
- 1...Sg2
- 2.Sxc7#
- 2.Sxe7#
- 1...Sfd3
- 2.Sxc7#
- 2.Sxe7#
- 1...Sh3
- 2.Sxc7#
- 2.Sxe7#
- 1...Sh5
- 2.Sxc7#
- 2.Sxe7#
- 1...Sfg6
- 2.Sxc7#
- 1...Sed3
- 2.Sxc7#
- 2.Sxe7#
- 1...Sf3
- 2.Sxc7#
- 2.Sxe7#
- 1...Sc4
- 2.Sxc7#
- 2.Sxe7#
- 1...Sg4
- 2.Sxc7#
- 2.Sxe7#
- 1...Seg6
- 2.Sxc7#
- 1...Sd7
- 2.Sxc7#
- 1...Ke4!
- 1...Kxc6
- 1.Qe8?
- 1...Kxe6
- 2.Sxc7#
- 1...Sxe6
- 2.Sxe7#
- 1...Sxc6
- 2.Sxc7#
- 1...Sxf7
- 2.Sxc7#
- 1...Se2
- 2.Sxc7#
- 1...Sg2
- 2.Sxc7#
- 1...Sfd3
- 2.Sxc7#
- 1...Sh3
- 2.Sxc7#
- 1...Sh5
- 2.Sxc7#
- 1...Sfg6
- 2.Sxc7#
- 1...Sed3
- 2.Sxc7#
- 1...Sf3
- 2.Sxc7#
- 1...Sc4
- 2.Sxc7#
- 1...Sg4
- 2.Sxc7#
- 1...Seg6
- 2.Sxc7#
- 1...Sd7
- 2.Sxc7#
- 1...Ke4!
- 1...Kxe6
- 1.f8S?
- threat
- 2.Sxb4#
- 2.Sxe7#
- 1...Sxc6
- 2.Sxc7#
- 1...Ke4!
- threat
- 1.Sc3+?
- Keys
- 1.Qg8!
- 1...Ke4
- 2.Qg2#
- 1...Kxc6
- 2.Sc3#
- 1...Kxe6
- 2.f8S#
- 1...Sxe6
- 2.Sxe7#
- 1...Sxc6
- 2.Sxc7#
- 1...Sxf7
- 2.Sxc7#
- 1...Se2
- 2.Sxc7#
- 1...Sg2
- 2.Sxc7#
- 1...Sfd3
- 2.Sxc7#
- 1...Sh3
- 2.Sxc7#
- 1...Sh5
- 2.Sxc7#
- 1...Sfg6
- 2.Sxc7#
- 1...Sed3
- 2.Sxc7#
- 1...Sf3
- 2.Sxc7#
- 1...Sc4
- 2.Sxc7#
- 1...Sg4
- 2.Sxc7#
- 1...Seg6
- 2.Sxc7#
- 1...Sd7
- 2.Sxc7#
- 1...Ke4
- 1.Qg8!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 0
- Sets
- S(b);::S(F),XP(i)
- S(e);::S(F),XP(i)
- S(e);P_SPINS(e),XS(H)::S(F),XP(i)
- S(e);XP(J)::S(F),XP(i)
- Tries
- Try
- S(F);CHECK
- Vars
- K(d);S_FLIGHT,XR(I)::S(H)
- Refutation
- P(a);XS(F)
- Try
- S(H);CHECK
- Vars
- S(e);N_GUARD,P_SPINS(e)::QAB1(K),XS(e)
- Refutation
- P(i);P_SPINP(i)
- Try
- S(H);CHECK
- Refutation
- P(i);P_SPINP(i)
- Try
- R(I);XP(j)
- Threat
- QAB(K)+S(H),DCHECK,XP(a)
- Vars
- S(e);P_SPINS(e),XS(H)::S(F),XP(i)
- Refutation
- K(d);P_SPINS(b),S_FLIGHT
- Try
- Q(K);
- Vars
- S(b);XR(I)::S(H),XP(j)
- S(e);XS(H)::S(F),XP(i)
- S(b);::S(F),XP(i)
- S(e);::S(F),XP(i)
- Refutation
- K(d);P_SPINS(b),S_FLIGHT
- Try
- Q(K);
- Vars
- K(d);P_SPINP(j),S_FLIGHT,XR(I)::S(F),XP(i)
- S(b);SBLOCK,XR(I)::S(H),XP(j)
- S(e);XS(H)::S(F),XP(i)
- S(e);XP(J)::S(F),XP(i)
- S(b);::S(F),XP(i)
- S(e);::S(F),XP(i)
- Refutation
- K(d);P_SPINS(b),S_FLIGHT
- Try
- P(J);
- Threat
- DUALS(2)
- Vars
- S(e);P_SPINS(e),XS(H)::S(F),XP(i)
- Refutation
- K(d);P_SPINS(b),S_FLIGHT
- Try
- Actual
- Q(K);
- Vars
- K(d);P_SPINS(b),S_FLIGHT::QAB(K)
- K(d);P_SPINP(g),S_FLIGHT,XS(H)::B(D)+S(F)
- K(d);S_FLIGHT,XR(I)::P=S
- S(b);SBLOCK,XR(I)::S(H),XP(j)
- S(e);XS(H)::S(F),XP(i)
- S(e);XP(J)::S(F),XP(i)
- S(b);::S(F),XP(i)
- S(e);::S(F),XP(i)
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).