MESON Chess Problem Database
Problem Display
PID: 24882 (3r3b/p4P2/7Q/Nb5K/pP1kP1R1/2pPp1BR/2n5/4N3 w - - 0 1)
Mackenzie, Arthur Ford
1st Prize, Northern Figaro, 1887-1888
#2
11 + 9
SOLUTION
- SOUND
- Sets
- 1...Rd5+
- 2.e5#
- 1...Rd6
- 2.Qxd6#
- 1...Rd7
- 2.Qxh8#
- 1...Ra8
- 2.Qd6#
- 1...Rb8
- 2.Qd6#
- 1...Rc8
- 2.Qd6#
- 1...Re8
- 2.Qd6#
- 1...Rf8
- 2.Qd6#
- 1...Rg8
- 2.Qd6#
- 1...Bxd3
- 2.Sf3#
- 1...Bc4
- 2.Sc6#
- 1...Ba6
- 2.Sc6#
- 1...Bc6
- 2.Sxc6#
- 1...Bd7
- 2.Qd6#
- 1...Be8
- 2.Qxh8#
- 1...Bf6
- 2.Qxf6#
- 1...Bg7
- 2.Qxg7#
- 1...a3
- 2.Sb3#
- 1...a6
- 2.Qb6#
- 1...Rd5+
- Tries
- 1.Bh2?
- 1...Rd5+
- 2.e5#
- 1...Bxd3
- 2.Sf3#
- 1...Sxe1
- 2.Qxe3#
- 1...Sxb4
- 2.Qxe3#
- 1...Rd6
- 2.Qxd6#
- 1...Rd7
- 2.Qxh8#
- 1...Ra8
- 2.Qd6#
- 1...Rb8
- 2.Qd6#
- 1...Rc8
- 2.Qd6#
- 1...Re8
- 2.Qd6#
- 1...Rf8
- 2.Qd6#
- 1...Rg8
- 2.Qd6#
- 1...Bc4
- 2.Sc6#
- 1...Ba6
- 2.Sc6#
- 1...Bc6
- 2.Sxc6#
- 1...Bd7
- 2.Qd6#
- 1...Be8
- 2.Qxh8#
- 1...Bf6
- 2.Qxf6#
- 1...Bg7
- 2.Qxg7#
- 1...Sa1
- 2.Qxe3#
- 1...Sa3
- 2.Qxe3#
- 1...e2
- 2.Sxc2#
- 1...a3
- 2.Sb3#
- 1...a6
- 2.Qb6#
- 1...Be5!
- 1...Rd5+
- 1.Be5+?
- 1...Kxe5
- 2.Sf3#
- 1...Bxe5!
- 1...Kxe5
- 1.Bc7?
- 1...Rd5+
- 2.e5#
- 1...Bxd3
- 2.Sf3#
- 1...Sxe1
- 2.Qxe3#
- 1...Sxb4
- 2.Qxe3#
- 1...Rd6
- 2.Qxd6#
- 1...Rd7
- 2.Qxh8#
- 1...Ra8
- 2.Qd6#
- 1...Rb8
- 2.Qd6#
- 1...Rc8
- 2.Qd6#
- 1...Re8
- 2.Qd6#
- 1...Rf8
- 2.Qd6#
- 1...Rg8
- 2.Qd6#
- 1...Bc4
- 2.Sc6#
- 1...Ba6
- 2.Sc6#
- 1...Bc6
- 2.Sxc6#
- 1...Bd7
- 2.Qd6#
- 1...Be8
- 2.Qxh8#
- 1...Bf6
- 2.Qxf6#
- 1...Bg7
- 2.Qxg7#
- 1...Sa1
- 2.Qxe3#
- 1...Sa3
- 2.Qxe3#
- 1...e2
- 2.Sxc2#
- 1...a3
- 2.Sb3#
- 1...a6
- 2.Qb6#
- 1...Be5!
- 1...Rd5+
- 1.Qc6?
- threat
- 2.Qc5#
- 2.e5#
- 1...Rd5+
- 2.Qxd5#
- 2.exd5#
- 2.e5#
- 1...Bxd3
- 2.Sf3#
- 2.Qc5#
- 1...Bxc6
- 2.Sxc6#
- 1...Sxb4
- 2.e5#
- 1...e2
- 2.Qc5#
- 1...Be5
- 2.Qc5#
- 1...Rc8
- 2.Qd5#
- 2.Qd6#
- 2.e5#
- 1...Rg8
- 2.Qd5#
- 2.Qc5#
- 2.Qd6#
- 1...Sxe1!
- threat
- 1.Bh2?
- Keys
- 1.Bb8!
- 1...Rd5+
- 2.e5#
- 1...Rxb8
- 2.Qd6#
- 1...Bxd3
- 2.Sf3#
- 1...Sxe1
- 2.Qxe3#
- 1...Sxb4
- 2.Qxe3#
- 1...Rd6
- 2.Qxd6#
- 1...Be5
- 2.Bxa7#
- 1...Rd7
- 2.Qxh8#
- 1...Rc8
- 2.Qd6#
- 1...Re8
- 2.Qd6#
- 1...Rf8
- 2.Qd6#
- 1...Rg8
- 2.Qd6#
- 1...Bc4
- 2.Sc6#
- 1...Ba6
- 2.Sc6#
- 1...Bc6
- 2.Sxc6#
- 1...Bd7
- 2.Qd6#
- 1...Be8
- 2.Qxh8#
- 1...Bf6
- 2.Qxf6#
- 1...Bg7
- 2.Qxg7#
- 1...Sa1
- 2.Qxe3#
- 1...Sa3
- 2.Qxe3#
- 1...e2
- 2.Sxc2#
- 1...a3
- 2.Sb3#
- 1...a6
- 2.Qb6#
- 1...Rd5+
- 1.Bb8!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 6
- REMOVED MATES = 1
- Sets
- R(h);CHECK,SBLOCK::R(G)+P(F)
- R(h);N_GUARD::QAR2(J),XR(h)
- R(h);N_GUARD::QAB(J),XB(i)
- R(h);N_GUARD::QAR2(J)
- B(f);SBLOCK,XP(B)::S(A)
- B(f);N_GUARD::S(H)
- B(f);N_GUARD::S(H),XB(f)
- B(f);S_CUTR(h)::QAR2(J)
- B(f);P_PINP(K),S_CUTR(h)::QAB(J),XB(i)
- B(i);N_GUARD::QAB(J),XB(i)
- P(d);N_GUARD::S(H)
- P(g);N_GUARD::QAB(J)
- Tries
- Try
- B(C);
- Vars
- R(h);CHECK,SBLOCK::R(G)+P(F)
- B(f);SBLOCK,XP(B)::S(A)
- S(a);N_GUARD,XS(A)::QAB1(J),XP(c)
- S(a);N_GUARD,XP(E)::QAB1(J),XP(c)
- R(h);N_GUARD::QAR2(J),XR(h)
- R(h);N_GUARD::QAB(J),XB(i)
- R(h);N_GUARD::QAR2(J)
- B(f);N_GUARD::S(H)
- B(f);N_GUARD::S(H),XB(f)
- B(f);S_CUTR(h)::QAR2(J)
- B(f);P_PINP(K),S_CUTR(h)::QAB(J),XB(i)
- B(i);N_GUARD::QAB(J),XB(i)
- S(a);N_GUARD::QAB1(J),XP(c)
- P(c);::S(A),XS(a)
- P(d);N_GUARD::S(H)
- P(g);N_GUARD::QAB(J)
- Refutation
- B(i);
- Try
- B(C);CHECK
- Vars
- K(e);S_FLIGHT,XB(C)::S(A)
- Refutation
- B(i);XB(C)
- Try
- B(C);
- Vars
- R(h);CHECK,SBLOCK::R(G)+P(F)
- B(f);SBLOCK,XP(B)::S(A)
- S(a);N_GUARD,XS(A)::QAB1(J),XP(c)
- S(a);N_GUARD,XP(E)::QAB1(J),XP(c)
- R(h);N_GUARD::QAR2(J),XR(h)
- R(h);N_GUARD::QAB(J),XB(i)
- R(h);N_GUARD::QAR2(J)
- B(f);N_GUARD::S(H)
- B(f);N_GUARD::S(H),XB(f)
- B(f);S_CUTR(h)::QAR2(J)
- B(f);P_PINP(K),S_CUTR(h)::QAB(J),XB(i)
- B(i);N_GUARD::QAB(J),XB(i)
- S(a);N_GUARD::QAB1(J),XP(c)
- P(c);::S(A),XS(a)
- P(d);N_GUARD::S(H)
- P(g);N_GUARD::QAB(J)
- Refutation
- B(i);
- Try
- Q(J);
- Threat
- DUALS(2)
- Vars
- B(f);XQ(J)::S(H),XB(f)
- S(a);XP(E)::R(G)+P(F)
- P(c);::QAB1(J)
- B(i);::QAB1(J)
- Refutation
- S(a);XS(A)
- Try
- Actual
- B(C);
- Vars
- R(h);CHECK,SBLOCK::R(G)+P(F)
- R(h);N_GUARD,XB(C)::QAR2(J)
- B(f);SBLOCK,XP(B)::S(A)
- S(a);N_GUARD,XS(A)::QAB1(J),XP(c)
- S(a);N_GUARD,XP(E)::QAB1(J),XP(c)
- R(h);N_GUARD::QAR2(J),XR(h)
- B(i);SBLOCK::B(C),XP(g)
- R(h);N_GUARD::QAB(J),XB(i)
- R(h);N_GUARD::QAR2(J)
- B(f);N_GUARD::S(H)
- B(f);N_GUARD::S(H),XB(f)
- B(f);S_CUTR(h)::QAR2(J)
- B(f);P_PINP(K),S_CUTR(h)::QAB(J),XB(i)
- B(i);N_GUARD::QAB(J),XB(i)
- S(a);N_GUARD::QAB1(J),XP(c)
- P(c);::S(A),XS(a)
- P(d);N_GUARD::S(H)
- P(g);N_GUARD::QAB(J)
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).