MESON Chess Problem Database
Problem Display
PID: 142110 (K2bN3/Qn2p2R/2B5/1p2kP1R/5p2/1P4p1/3N2P1/5r1n w - - 0 1)
Mackenzie, Arthur Ford
5th Prize, British Chess Magazine 06. Ty., 1890
#2
10 + 9
SOLUTION
- SOUND
- Sets
- 1...Ra1
- 2.Sf3#
- 2.Qxa1#
- 1...Rb1
- 2.Sf3#
- 1...Rc1
- 2.Sf3#
- 1...Rd1
- 2.Sf3#
- 1...Re1
- 2.Sf3#
- 1...Rg1
- 2.Sf3#
- 1...Rf2
- 2.Qa1#
- 1...Rf3
- 2.Sxf3#
- 1...Ba5
- 2.Rxe7#
- 1...Bc7
- 2.Rxe7#
- 1...Sf2
- 2.Sf3#
- 1...Sa5
- 2.Qc5#
- 1...Sc5
- 2.Qxc5#
- 1...Sd6
- 2.Qc5#
- 1...f3
- 2.Qe3#
- 1...b4
- 2.Sc4#
- 1...e6
- 2.f6#
- 1...Ra1
- Tries
- 1.Kxb7?
- threat
- 2.Qc5#
- 1...f3
- 2.Qe3#
- 1...Rc1
- 2.Sf3#
- 1...Bb6!
- threat
- 1.Sxf1?
- threat
- 2.Qa1#
- 1...f3
- 2.Qe3#
- 1...Ba5
- 2.Rxe7#
- 1...Sa5
- 2.Qc5#
- 1...Bb6!
- threat
- 1.Bxb7?
- threat
- 2.Qc5#
- 1...f3
- 2.Qe3#
- 1...Ra1
- 2.Sf3#
- 2.Qxa1#
- 1...Rc1
- 2.Sf3#
- 1...Bb6!
- threat
- 1.Rg5?
- 1...Sc5
- 2.Qxc5#
- 1...f3
- 2.Qe3#
- 1...Ra1
- 2.Sf3#
- 2.Qxa1#
- 1...Rb1
- 2.Sf3#
- 1...Rc1
- 2.Sf3#
- 1...Rd1
- 2.Sf3#
- 1...Re1
- 2.Sf3#
- 1...Rg1
- 2.Sf3#
- 1...Rf2
- 2.Qa1#
- 1...Rf3
- 2.Sxf3#
- 1...Ba5
- 2.Rxe7#
- 1...Bc7
- 2.Rxe7#
- 1...Sf2
- 2.Sf3#
- 1...Sa5
- 2.Qc5#
- 1...Sd6
- 2.Qc5#
- 1...b4
- 2.Sc4#
- 1...e6
- 2.f6#
- 1...Bb6!
- 1...Sc5
- 1.R7h6?
- threat
- 2.Re6#
- 1...Sc5
- 2.Qxc5#
- 1...f3
- 2.Qe3#
- 1...e6
- 2.Rxe6#
- 2.f6#
- 1...Bb6!
- threat
- 1.Rf7?
- 1...Sc5
- 2.Qxc5#
- 1...f3
- 2.Qe3#
- 1...Ra1
- 2.Sf3#
- 2.Qxa1#
- 1...Rb1
- 2.Sf3#
- 1...Rc1
- 2.Sf3#
- 1...Rd1
- 2.Sf3#
- 1...Re1
- 2.Sf3#
- 1...Rg1
- 2.Sf3#
- 1...Rf2
- 2.Qa1#
- 1...Rf3
- 2.Sxf3#
- 1...Ba5
- 2.Rxe7#
- 1...Bc7
- 2.Rxe7#
- 1...Sf2
- 2.Sf3#
- 1...Sa5
- 2.Qc5#
- 1...Sd6
- 2.Qc5#
- 1...b4
- 2.Sc4#
- 1...e6
- 2.f6#
- 1...Bb6!
- 1...Sc5
- 1.Rg7?
- 1...Sc5
- 2.Qxc5#
- 1...f3
- 2.Qe3#
- 1...Ra1
- 2.Sf3#
- 2.Qxa1#
- 1...Rb1
- 2.Sf3#
- 1...Rc1
- 2.Sf3#
- 1...Rd1
- 2.Sf3#
- 1...Re1
- 2.Sf3#
- 1...Rg1
- 2.Sf3#
- 1...Rf2
- 2.Qa1#
- 1...Rf3
- 2.Sxf3#
- 1...Ba5
- 2.Rxe7#
- 1...Bc7
- 2.Rxe7#
- 1...Sf2
- 2.Sf3#
- 1...Sa5
- 2.Qc5#
- 1...Sd6
- 2.Qc5#
- 1...b4
- 2.Sc4#
- 1...e6
- 2.f6#
- 1...Bb6!
- 1...Sc5
- 1.b4?
- 1...Sc5
- 2.Qxc5#
- 1...f3
- 2.Qe3#
- 1...Ra1
- 2.Sf3#
- 2.Qxa1#
- 1...Rb1
- 2.Sf3#
- 1...Rc1
- 2.Sf3#
- 1...Rd1
- 2.Sf3#
- 1...Re1
- 2.Sf3#
- 1...Rg1
- 2.Sf3#
- 1...Rf2
- 2.Qa1#
- 1...Rf3
- 2.Sxf3#
- 1...Ba5
- 2.Rxe7#
- 1...Bc7
- 2.Rxe7#
- 1...Sf2
- 2.Sf3#
- 1...Sa5
- 2.Qc5#
- 1...Sd6
- 2.Qc5#
- 1...e6
- 2.f6#
- 1...Bb6!
- 1...Sc5
- 1.Kxb7?
- Keys
- 1.Qg1!
- 1...Ra1+
- 2.Qxa1#
- 1...Rxg1
- 2.Sf3#
- 1...Rf2
- 2.Qa1#
- 1...Sf2
- 2.Sf3#
- 1...f3
- 2.Qe3#
- 1...Rb1
- 2.Sf3#
- 1...Rc1
- 2.Sf3#
- 1...Rd1
- 2.Sf3#
- 1...Re1
- 2.Sf3#
- 1...Rf3
- 2.Sxf3#
- 1...Ba5
- 2.Rxe7#
- 1...Bb6
- 2.Rxe7#
- 1...Bc7
- 2.Rxe7#
- 1...Sa5
- 2.Qc5#
- 1...Sc5
- 2.Qxc5#
- 1...Sd6
- 2.Qc5#
- 1...b4
- 2.Sc4#
- 1...e6
- 2.f6#
- 1...Ra1+
- 1.Qg1!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 0
- Sets
- R(a);N_GUARD::S(A)
- R(a);N_GUARD::QAB(G)
- R(a);N_GUARD::S(A),XR(a)
- B(i);N_GUARD::R(H),XP(h)
- S(b);S_CUTR(a)::S(A)
- S(g);N_GUARD::QAR2(G)
- S(g);N_GUARD::QAR2(G),XS(g)
- P(d);N_GUARD::QAR2(G)
- P(e);N_GUARD::S(A)
- P(h);SBLOCK::R(E)+P(D)
- Tries
- Try
- K(I);S_FLIGHT,XS(g)
- Threat
- QAR2(G)
- Vars
- P(d);N_GUARD::QAR2(G)
- R(a);N_GUARD::S(A)
- Refutation
- B(i);
- Try
- S(A);XR(a)
- Threat
- QAB(G)
- Vars
- P(d);N_GUARD::QAR2(G)
- B(i);N_GUARD::R(H),XP(h)
- S(g);N_GUARD::QAR2(G)
- Refutation
- B(i);
- Try
- B(F);XS(g)
- Threat
- QAR2(G)
- Vars
- P(d);N_GUARD::QAR2(G)
- R(a);N_GUARD::S(A)
- Refutation
- B(i);
- Try
- R(E);
- Vars
- S(g);N_GUARD::QAR2(G),XS(g)
- P(d);N_GUARD::QAR2(G)
- R(a);N_GUARD::S(A)
- R(a);N_GUARD::QAB(G)
- R(a);N_GUARD::S(A),XR(a)
- B(i);N_GUARD::R(H),XP(h)
- S(b);S_CUTR(a)::S(A)
- S(g);N_GUARD::QAR2(G)
- P(e);N_GUARD::S(A)
- P(h);SBLOCK::R(E)+P(D)
- Refutation
- B(i);
- Try
- R(H);
- Threat
- R1(H)
- Vars
- S(g);N_GUARD::QAR2(G),XS(g)
- P(d);N_GUARD::QAR2(G)
- Refutation
- B(i);
- Try
- R(H);
- Vars
- S(g);N_GUARD::QAR2(G),XS(g)
- P(d);N_GUARD::QAR2(G)
- R(a);N_GUARD::S(A)
- R(a);N_GUARD::QAB(G)
- R(a);N_GUARD::S(A),XR(a)
- B(i);N_GUARD::R(H),XP(h)
- S(b);S_CUTR(a)::S(A)
- S(g);N_GUARD::QAR2(G)
- P(e);N_GUARD::S(A)
- P(h);SBLOCK::R(E)+P(D)
- Refutation
- B(i);
- Try
- R(H);
- Vars
- S(g);N_GUARD::QAR2(G),XS(g)
- P(d);N_GUARD::QAR2(G)
- R(a);N_GUARD::S(A)
- R(a);N_GUARD::QAB(G)
- R(a);N_GUARD::S(A),XR(a)
- B(i);N_GUARD::R(H),XP(h)
- S(b);S_CUTR(a)::S(A)
- S(g);N_GUARD::QAR2(G)
- P(e);N_GUARD::S(A)
- P(h);SBLOCK::R(E)+P(D)
- Refutation
- B(i);
- Try
- P(C);
- Vars
- S(g);N_GUARD::QAR2(G),XS(g)
- P(d);N_GUARD::QAR2(G)
- R(a);N_GUARD::S(A)
- R(a);N_GUARD::QAB(G)
- R(a);N_GUARD::S(A),XR(a)
- B(i);N_GUARD::R(H),XP(h)
- S(b);S_CUTR(a)::S(A)
- S(g);N_GUARD::QAR2(G)
- P(h);SBLOCK::R(E)+P(D)
- Refutation
- B(i);
- Try
- Actual
- Q(G);
- Vars
- R(a);CHECK,OGATE::QAB(G),XR(a)
- R(a);N_GUARD,XQ(G)::S(A)
- R(a);OGATE::QAB(G)
- S(b);S_CUTR(a)::S(A)
- P(d);N_GUARD::QAR2(G)
- R(a);N_GUARD::S(A)
- R(a);N_GUARD::S(A),XR(a)
- B(i);N_GUARD::R(H),XP(h)
- S(g);N_GUARD::QAR2(G)
- S(g);N_GUARD::QAR2(G),XS(g)
- P(e);N_GUARD::S(A)
- P(h);SBLOCK::R(E)+P(D)
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).