MESON Chess Problem Database
Problem Display
PID: 48669 (N6q/1R1N1b2/P1k1p1p1/2Pp2p1/6B1/3P3P/1PR5/3K4 w - - 0 1)
Coates, William H
Chess Chips, 1878
#2
11 + 7
SOLUTION
- SOUND
- Sets
- 1...Qxb2
- 2.Sb8#
- 1...Qd4
- 2.Sb8#
- 1...Qe5
- 2.Sxe5#
- 1...Qf6
- 2.Sb8#
- 1...Qg7
- 2.Sb8#
- 1...Qxh3
- 2.Se5#
- 2.Sb8#
- 1...Qh4
- 2.Se5#
- 2.Sb8#
- 1...Qh5
- 2.Se5#
- 2.Sb8#
- 1...Qh6
- 2.Se5#
- 2.Sb8#
- 1...Qh7
- 2.Se5#
- 2.Sb8#
- 1...Qxa8
- 2.Se5#
- 1...Qb8
- 2.Sxb8#
- 1...Qc8
- 2.Se5#
- 1...Qd8
- 2.Se5#
- 1...Qe8
- 2.Se5#
- 1...Qf8
- 2.Se5#
- 1...Qg8
- 2.Se5#
- 1...Be8
- 2.Sb8#
- 1...Bg8
- 2.Sb8#
- 1...d4
- 2.Bf3#
- 1...e5
- 2.Rb6#
- 1...Qxb2
- Tries
- 1.Kd2?
- 1...Qxb2
- 2.Sb8#
- 1...Qxh3
- 2.Se5#
- 2.Sb8#
- 1...Qxa8
- 2.Se5#
- 1...d4
- 2.Bf3#
- 1...Qd4
- 2.Sb8#
- 1...Qe5
- 2.Sxe5#
- 1...Qf6
- 2.Sb8#
- 1...Qg7
- 2.Sb8#
- 1...Qh4
- 2.Se5#
- 2.Sb8#
- 1...Qh5
- 2.Se5#
- 2.Sb8#
- 1...Qh6
- 2.Se5#
- 2.Sb8#
- 1...Qh7
- 2.Se5#
- 2.Sb8#
- 1...Qb8
- 2.Sxb8#
- 1...Qc8
- 2.Se5#
- 1...Qd8
- 2.Se5#
- 1...Qe8
- 2.Se5#
- 1...Qf8
- 2.Se5#
- 1...Qg8
- 2.Se5#
- 1...Be8
- 2.Sb8#
- 1...Bg8
- 2.Sb8#
- 1...e5
- 2.Rb6#
- 1...Qc3+!
- 1...Qxb2
- 1.Ke2?
- 1...Qe5+
- 2.Sxe5#
- 1...Qxb2
- 2.Sb8#
- 1...Qxh3
- 2.Se5#
- 2.Sb8#
- 1...Qxa8
- 2.Se5#
- 1...d4
- 2.Bf3#
- 1...Qd4
- 2.Sb8#
- 1...Qf6
- 2.Sb8#
- 1...Qg7
- 2.Sb8#
- 1...Qh4
- 2.Se5#
- 2.Sb8#
- 1...Qh5
- 2.Se5#
- 2.Sb8#
- 1...Qh6
- 2.Se5#
- 2.Sb8#
- 1...Qh7
- 2.Se5#
- 2.Sb8#
- 1...Qb8
- 2.Sxb8#
- 1...Qc8
- 2.Se5#
- 1...Qd8
- 2.Se5#
- 1...Qe8
- 2.Se5#
- 1...Qf8
- 2.Se5#
- 1...Qg8
- 2.Se5#
- 1...Be8
- 2.Sb8#
- 1...Bg8
- 2.Sb8#
- 1...e5
- 2.Rb6#
- 1...Qc3!
- 1...Qe5+
- 1.Rc1?
- 1...Qxb2
- 2.Sb8#
- 1...Qxh3
- 2.Se5#
- 2.Sb8#
- 1...Qxa8
- 2.Se5#
- 1...d4
- 2.Bf3#
- 1...Qd4
- 2.Sb8#
- 1...Qe5
- 2.Sxe5#
- 1...Qf6
- 2.Sb8#
- 1...Qg7
- 2.Sb8#
- 1...Qh4
- 2.Se5#
- 2.Sb8#
- 1...Qh5
- 2.Se5#
- 2.Sb8#
- 1...Qh6
- 2.Se5#
- 2.Sb8#
- 1...Qh7
- 2.Se5#
- 2.Sb8#
- 1...Qb8
- 2.Sxb8#
- 1...Qc8
- 2.Se5#
- 1...Qd8
- 2.Se5#
- 1...Qe8
- 2.Se5#
- 1...Qf8
- 2.Se5#
- 1...Qg8
- 2.Se5#
- 1...Be8
- 2.Sb8#
- 1...Bg8
- 2.Sb8#
- 1...e5
- 2.Rb6#
- 1...Qc3!
- 1...Qxb2
- 1.Rc3?
- 1...Qxh3
- 2.Se5#
- 2.Sb8#
- 1...Qxa8
- 2.Se5#
- 1...d4
- 2.Bf3#
- 1...Qd4
- 2.Sb8#
- 1...Qe5
- 2.Sxe5#
- 1...Qf6
- 2.Sb8#
- 1...Qg7
- 2.Sb8#
- 1...Qh4
- 2.Se5#
- 2.Sb8#
- 1...Qh5
- 2.Se5#
- 2.Sb8#
- 1...Qh6
- 2.Se5#
- 2.Sb8#
- 1...Qh7
- 2.Se5#
- 2.Sb8#
- 1...Qb8
- 2.Sxb8#
- 1...Qc8
- 2.Se5#
- 1...Qd8
- 2.Se5#
- 1...Qe8
- 2.Se5#
- 1...Qf8
- 2.Se5#
- 1...Qg8
- 2.Se5#
- 1...Be8
- 2.Sb8#
- 1...Bg8
- 2.Sb8#
- 1...e5
- 2.Rb6#
- 1...Qxc3!
- 1...Qxh3
- 1.b4?
- threat
- 2.b5#
- 1...d4
- 2.Bf3#
- 1...Qb2
- 2.Sb8#
- 1...Qa1+!
- threat
- 1.d4?
- 1...Qxh3
- 2.Se5#
- 2.Sb8#
- 1...Qxa8
- 2.Se5#
- 1...Qe5
- 2.Sxe5#
- 1...Qf6
- 2.Sb8#
- 1...Qg7
- 2.Sb8#
- 1...Qh4
- 2.Se5#
- 2.Sb8#
- 1...Qh5
- 2.Se5#
- 2.Sb8#
- 1...Qh6
- 2.Se5#
- 2.Sb8#
- 1...Qh7
- 2.Se5#
- 2.Sb8#
- 1...Qb8
- 2.Sxb8#
- 1...Qc8
- 2.Se5#
- 1...Qd8
- 2.Se5#
- 1...Qe8
- 2.Se5#
- 1...Qf8
- 2.Se5#
- 1...Qg8
- 2.Se5#
- 1...Be8
- 2.Sb8#
- 1...Bg8
- 2.Sb8#
- 1...e5
- 2.Rb6#
- 1...Qxd4+!
- 1...Qxh3
- 1.Kd2?
- Keys
- 1.Rc4!
- 1...Qxb2
- 2.Sb8#
- 1...Qxh3
- 2.Se5#
- 2.Sb8#
- 1...Qxa8
- 2.Se5#
- 1...dxc4
- 2.Bf3#
- 1...d4
- 2.Bf3#
- 1...Qc3
- 2.Sb8#
- 1...Qd4
- 2.Sb8#
- 1...Qe5
- 2.Sxe5#
- 1...Qf6
- 2.Sb8#
- 1...Qg7
- 2.Sb8#
- 1...Qh4
- 2.Se5#
- 2.Sb8#
- 1...Qh5
- 2.Se5#
- 2.Sb8#
- 1...Qh6
- 2.Se5#
- 2.Sb8#
- 1...Qh7
- 2.Se5#
- 2.Sb8#
- 1...Qb8
- 2.Sxb8#
- 1...Qc8
- 2.Se5#
- 1...Qd8
- 2.Se5#
- 1...Qe8
- 2.Se5#
- 1...Qf8
- 2.Se5#
- 1...Qg8
- 2.Se5#
- 1...Be8
- 2.Sb8#
- 1...Bg8
- 2.Sb8#
- 1...e5
- 2.Rb6#
- 1...Qxb2
- 1.Rc4!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 0
- Sets
- Q(g);N_GUARD,XP(B)::S(J)
- Q(g);N_GUARD,P_PINP(D)::S(J)
- Q(g);N_GUARD::S(J),XQ(g)
- Q(g);N_GUARD::S(J)
- Q(g);N_GUARD,XS(K)::S(J)
- B(f);S_CUTQ(g)::S(J)
- P(a);OGATEB::B(F)
- P(d);::R1(I)
- Tries
- Try
- K(A);P-FLIGHT
- Vars
- Q(g);N_GUARD,P_PINR(C),XP(B)::S(J)
- Q(g);N_GUARD,XS(K)::S(J)
- P(a);OGATEB::B(F)
- Q(g);N_GUARD,P_PINP(D)::S(J)
- Q(g);N_GUARD::S(J),XQ(g)
- Q(g);N_GUARD::S(J)
- B(f);S_CUTQ(g)::S(J)
- P(d);::R1(I)
- Refutation
- Q(g);CHECK
- Try
- K(A);S_FLIGHT
- Vars
- Q(g);CHECK,N_GUARD::S(J),XQ(g)
- Q(g);N_GUARD,P_PINR(C),XP(B)::S(J)
- Q(g);N_GUARD,XS(K)::S(J)
- P(a);OGATEB::B(F)
- Q(g);N_GUARD::S(J)
- Q(g);N_GUARD::S(J),XQ(g)
- B(f);S_CUTQ(g)::S(J)
- P(d);::R1(I)
- Refutation
- Q(g);
- Try
- R(C);
- Vars
- Q(g);N_GUARD,XP(B)::S(J)
- Q(g);N_GUARD,XS(K)::S(J)
- P(a);OGATEB::B(F)
- Q(g);N_GUARD,P_PINP(D)::S(J)
- Q(g);N_GUARD::S(J),XQ(g)
- Q(g);N_GUARD::S(J)
- B(f);S_CUTQ(g)::S(J)
- P(d);::R1(I)
- Refutation
- Q(g);
- Try
- R(C);
- Vars
- Q(g);N_GUARD,XS(K)::S(J)
- P(a);OGATEB::B(F)
- Q(g);N_GUARD,P_PINP(D)::S(J)
- Q(g);N_GUARD::S(J),XQ(g)
- Q(g);N_GUARD::S(J)
- B(f);S_CUTQ(g)::S(J)
- P(d);::R1(I)
- Refutation
- Q(g);XR(C)
- Try
- P(B);
- Threat
- P(B)
- Vars
- P(a);OGATEB::B(F)
- Q(g);N_GUARD::S(J)
- Refutation
- Q(g);CHECK
- Try
- P(D);
- Vars
- Q(g);N_GUARD,XS(K)::S(J)
- Q(g);N_GUARD::S(J),XQ(g)
- Q(g);N_GUARD::S(J)
- B(f);S_CUTQ(g)::S(J)
- P(d);::R1(I)
- Refutation
- Q(g);CHECK,XP(D)
- Try
- Actual
- R(C);
- Vars
- Q(g);N_GUARD,XP(B)::S(J)
- Q(g);N_GUARD,XS(K)::S(J)
- P(a);OGATEB,XR(C)::B(F)
- P(a);OGATEB::B(F)
- Q(g);N_GUARD::S(J)
- Q(g);N_GUARD,P_PINP(D)::S(J)
- Q(g);N_GUARD::S(J),XQ(g)
- B(f);S_CUTQ(g)::S(J)
- P(d);::R1(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).