MESON Chess Problem Database
Problem Display
PID: 142109 (Bn1N2b1/K4p2/1B1R1R2/1p2k3/1P4n1/Q4P2/4P3/b4rN1 w - - 0 1)
Mackenzie, Arthur Ford
7th Prize, British Chess Magazine 06. Ty., 1890
#2
11 + 8
SOLUTION
- SOUND
- Sets
- 1...Rb1
- 2.f4#
- 1...Rc1
- 2.f4#
- 1...Rd1
- 2.f4#
- 1...Re1
- 2.f4#
- 1...Rxg1
- 2.f4#
- 1...Rf2
- 2.Qxa1#
- 1...Rxf3
- 2.Sxf3#
- 1...Bb2
- 2.Qxb2#
- 1...Bc3
- 2.Qxc3#
- 1...Bd4
- 2.Bxd4#
- 1...Bh7
- 2.Sxf7#
- 1...Sf2
- 2.f4#
- 1...Sh2
- 2.Qe3#
- 1...Se3
- 2.Qxe3#
- 1...Sh6
- 2.Qe3#
- 1...Sa6
- 2.Sc6#
- 1...Sc6+
- 2.Sxc6#
- 1...Sd7
- 2.Sc6#
- 1...Rb1
- Tries
- 1.Kxb8?
- threat
- 2.Sc6#
- 1...Rxf3
- 2.Sxf3#
- 1...Rc1
- 2.f4#
- 1...Sxf6!
- threat
- 1.Bf2?
- threat
- 2.Bg3#
- 2.f4#
- 1...Bd4+
- 2.Bxd4#
- 1...Sc6+
- 2.Sxc6#
- 1...Rxg1
- 2.f4#
- 1...Rxf2
- 2.Qxa1#
- 1...Sxf2
- 2.f4#
- 1...Sxf6!
- threat
- 1.Be3?
- threat
- 2.Bf4#
- 1...Bd4+
- 2.Bxd4#
- 1...Sc6+
- 2.Sxc6#
- 1...Rxf3
- 2.Sxf3#
- 2.Qxa1#
- 1...Sxe3
- 2.Qxe3#
- 1...Sxf6!
- threat
- 1.Bc5?
- 1...Sc6+
- 2.Sxc6#
- 1...Rxg1
- 2.f4#
- 1...Rxf3
- 2.Sxf3#
- 1...Rb1
- 2.f4#
- 1...Rc1
- 2.f4#
- 1...Rd1
- 2.f4#
- 1...Re1
- 2.f4#
- 1...Rf2
- 2.Qxa1#
- 1...Bb2
- 2.Qxb2#
- 1...Bc3
- 2.Qxc3#
- 1...Bd4
- 2.Bxd4#
- 1...Bh7
- 2.Sxf7#
- 1...Sf2
- 2.f4#
- 1...Sh2
- 2.Qe3#
- 1...Se3
- 2.Qxe3#
- 1...Sh6
- 2.Qe3#
- 1...Sa6
- 2.Sc6#
- 1...Sd7
- 2.Sc6#
- 1...Sxf6!
- 1...Sc6+
- 1.Bb7?
- 1...Sc6+
- 2.Sxc6#
- 1...Rxg1
- 2.f4#
- 1...Rxf3
- 2.Sxf3#
- 1...Rb1
- 2.f4#
- 1...Rc1
- 2.f4#
- 1...Rd1
- 2.f4#
- 1...Re1
- 2.f4#
- 1...Rf2
- 2.Qxa1#
- 1...Bb2
- 2.Qxb2#
- 1...Bc3
- 2.Qxc3#
- 1...Bd4
- 2.Bxd4#
- 1...Bh7
- 2.Sxf7#
- 1...Sf2
- 2.f4#
- 1...Sh2
- 2.Qe3#
- 1...Se3
- 2.Qxe3#
- 1...Sh6
- 2.Qe3#
- 1...Sa6
- 2.Sc6#
- 1...Sd7
- 2.Sc6#
- 1...Sxf6!
- 1...Sc6+
- 1.Qc1?
- threat
- 2.Qf4#
- 2.Qg5#
- 2.Qc5#
- 1...Sc6+
- 2.Sxc6#
- 1...Rxc1
- 2.f4#
- 1...Rxf3
- 2.Sxf3#
- 2.Qc5#
- 1...Rd1
- 2.Qf4#
- 2.Qg5#
- 2.f4#
- 1...Bc3
- 2.Qf4#
- 2.Qg5#
- 2.Qxc3#
- 1...Bd4
- 2.Bxd4#
- 2.Qf4#
- 2.Qg5#
- 1...Bh7
- 2.Sxf7#
- 2.Qf4#
- 2.Qc5#
- 1...Se3
- 2.Qxe3#
- 1...Sh6
- 2.Qe3#
- 2.Qf4#
- 2.Qc5#
- 1...Sa6
- 2.Sc6#
- 2.Qf4#
- 2.Qg5#
- 1...Sd7
- 2.Sc6#
- 2.Qf4#
- 2.Qg5#
- 1...Sxf6!
- threat
- 1.Qb3?
- threat
- 2.Qd5#
- 1...Sc6+
- 2.Sxc6#
- 1...Rd1
- 2.f4#
- 1...Se3
- 2.Qxe3#
- 1...Sxf6!
- threat
- 1.Qd3?
- threat
- 2.Rf5#
- 2.Qe4#
- 2.Qxb5#
- 2.Qf5#
- 2.Qd5#
- 1...Sc6+
- 2.Sxc6#
- 1...Rxf3
- 2.Sxf3#
- 2.Qe4#
- 2.Qxb5#
- 2.Qd5#
- 1...Rc1
- 2.Rf5#
- 2.Qe4#
- 2.Qf5#
- 2.Qd5#
- 2.f4#
- 1...Rd1
- 2.Rf5#
- 2.Qe4#
- 2.Qf5#
- 2.f4#
- 1...Bd4
- 2.Bxd4#
- 2.Qe4#
- 2.Qf5#
- 2.Qxd4#
- 1...Bh7
- 2.Sxf7#
- 2.Qxb5#
- 2.Qd5#
- 1...Sf2
- 2.Rf5#
- 2.Qxb5#
- 2.Qf5#
- 2.Qd5#
- 2.f4#
- 1...Se3
- 2.Qe4#
- 2.Qxe3#
- 1...Sh6
- 2.Qe4#
- 2.Qxb5#
- 2.Qe3#
- 2.Qd5#
- 1...Sa6
- 2.Sc6#
- 2.Rf5#
- 2.Qe4#
- 2.Qf5#
- 2.Qd5#
- 1...Sd7
- 2.Sc6#
- 2.Rf5#
- 2.Qe4#
- 2.Qf5#
- 2.Qd5#
- 1...Sxf6!
- threat
- 1.Kxb8?
- Keys
- 1.Bc7!
- 1...Bd4+
- 2.Rb6#
- 1...Sc6+
- 2.Sxc6#
- 1...Rxg1
- 2.f4#
- 1...Rxf3
- 2.Sxf3#
- 1...Sxf6
- 2.Rd5#
- 1...Rb1
- 2.f4#
- 1...Rc1
- 2.f4#
- 1...Rd1
- 2.f4#
- 1...Re1
- 2.f4#
- 1...Rf2
- 2.Qxa1#
- 1...Bb2
- 2.Qxb2#
- 1...Bc3
- 2.Qxc3#
- 1...Bh7
- 2.Sxf7#
- 1...Sf2
- 2.f4#
- 1...Sh2
- 2.Qe3#
- 1...Se3
- 2.Qxe3#
- 1...Sh6
- 2.Qe3#
- 1...Sa6
- 2.Sc6#
- 1...Sd7
- 2.Sc6#
- 1...Bd4+
- 1.Bc7!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 1
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- R(b);N_GUARD::P(D)
- R(b);N_GUARD,XS(A)::P(D)
- R(b);N_GUARD::QAB(C),XB(a)
- R(b);XP(D)::S(A),XR(b)
- B(a);N_GUARD::QAB(C),XB(a)
- B(a);N_GUARD,P_PINB(F)::B(F),XB(a)
- B(h);N_GUARD::S(K),XP(f)
- S(c);S_CUTR(b)::P(D)
- S(c);N_GUARD::QAR2(C)
- S(c);N_GUARD::QAR2(C),XS(c)
- S(g);N_GUARD::S(K)
- S(g);CHECK,N_GUARD::S(K),XS(g)
- Tries
- Try
- K(I);S_FLIGHT,XS(g)
- Threat
- S(K)
- Vars
- R(b);XP(D)::S(A),XR(b)
- R(b);N_GUARD::P(D)
- Refutation
- S(c);XR(H)
- Try
- B(F);
- Threat
- DUALS(2)
- Vars
- B(a);CHECK,N_GUARD::B(F),XB(a)
- S(g);CHECK,N_GUARD::S(K),XS(g)
- R(b);XS(A)::P(D)
- R(b);N_GUARD,XB(F)::QAB(C),XB(a)
- S(c);XB(F)::P(D)
- Refutation
- S(c);XR(H)
- Try
- B(F);
- Threat
- B(F)
- Vars
- B(a);CHECK,N_GUARD::B(F),XB(a)
- S(g);CHECK,N_GUARD::S(K),XS(g)
- S(c);OGATE,XB(F)::QAR2(C),XS(c)
- Refutation
- S(c);XR(H)
- Try
- B(F);
- Vars
- S(g);CHECK,N_GUARD::S(K),XS(g)
- R(b);N_GUARD,XS(A)::P(D)
- R(b);XP(D)::S(A),XR(b)
- R(b);N_GUARD::P(D)
- R(b);N_GUARD::QAB(C),XB(a)
- B(a);N_GUARD::QAB(C),XB(a)
- B(a);N_GUARD,P_PINB(F)::B(F),XB(a)
- B(h);N_GUARD::S(K),XP(f)
- S(c);S_CUTR(b)::P(D)
- S(c);N_GUARD::QAR2(C)
- S(c);N_GUARD::QAR2(C),XS(c)
- S(g);N_GUARD::S(K)
- Refutation
- S(c);XR(H)
- Try
- B(J);
- Vars
- S(g);CHECK,N_GUARD::S(K),XS(g)
- R(b);N_GUARD,XS(A)::P(D)
- R(b);XP(D)::S(A),XR(b)
- R(b);N_GUARD::P(D)
- R(b);N_GUARD::QAB(C),XB(a)
- B(a);N_GUARD::QAB(C),XB(a)
- B(a);N_GUARD,P_PINB(F)::B(F),XB(a)
- B(h);N_GUARD::S(K),XP(f)
- S(c);S_CUTR(b)::P(D)
- S(c);N_GUARD::QAR2(C)
- S(c);N_GUARD::QAR2(C),XS(c)
- S(g);N_GUARD::S(K)
- Refutation
- S(c);XR(H)
- Try
- Q(C);
- Threat
- DUALS(3)
- Vars
- S(g);CHECK,N_GUARD::S(K),XS(g)
- R(b);N_GUARD,XQ(C)::P(D)
- S(c);N_GUARD::QAR2(C),XS(c)
- Refutation
- S(c);XR(H)
- Try
- Q(C);
- Threat
- QAR1(C)
- Vars
- S(g);CHECK,N_GUARD::S(K),XS(g)
- R(b);N_GUARD::P(D)
- S(c);N_GUARD::QAR2(C),XS(c)
- Refutation
- S(c);XR(H)
- Try
- Q(C);
- Threat
- DUALS(5)
- Vars
- S(g);CHECK,N_GUARD::S(K),XS(g)
- Refutation
- S(c);XR(H)
- Try
- Actual
- B(F);
- Vars
- B(a);CHECK,SBLOCK::B(F)+R(G)
- S(g);CHECK,N_GUARD::S(K),XS(g)
- R(b);N_GUARD,XS(A)::P(D)
- R(b);XP(D)::S(A),XR(b)
- S(c);SBLOCK,XR(H)::B(F)+R(G),DCHECK
- R(b);N_GUARD::P(D)
- R(b);N_GUARD::QAB(C),XB(a)
- B(a);N_GUARD::QAB(C),XB(a)
- B(h);N_GUARD::S(K),XP(f)
- S(c);S_CUTR(b)::P(D)
- S(c);N_GUARD::QAR2(C)
- S(c);N_GUARD::QAR2(C),XS(c)
- S(g);N_GUARD::S(K)
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).