MESON Chess Problem Database
Problem Display
PID: 208898 (nQ1K3B/2PR1N2/p3k1p1/6P1/4p1r1/p5N1/b4p2/4bB2 w - - 0 1)
Barrier, ?
Detroit Free Press, 1876
#2
9 + 10
| 6490 | yacpdb | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Rxg5
- 2.Sxg5#
- 1...Bb1
- 2.Bc4#
- 2.Qb3#
- 1...Bb3
- 2.Qxb3#
- 1...Bc4
- 2.Bxc4#
- 1...Bd5
- 2.Re7#
- 1...Sb6
- 2.Qxb6#
- 1...Sxc7
- 2.Qb6#
- 1...Rxg5
- Tries
- 1.Kc8?
- threat
- 2.Sd8#
- 1...Sb6+
- 2.Qxb6#
- 1...Rxg3!
- threat
- 1.Qb2?
- threat
- 2.Qe5#
- 2.Qf6#
- 2.Qxa2#
- 1...Rxg3
- 2.Qe5#
- 2.Qf6#
- 1...Rxg5
- 2.Sxg5#
- 2.Qf6#
- 1...Sxc7
- 2.Qe5#
- 2.Qf6#
- 2.Qb6#
- 1...Rf4
- 2.Qe5#
- 2.Qxa2#
- 1...Bc3
- 2.Qxa2#
- 1...Bb1
- 2.Bc4#
- 2.Qe5#
- 2.Qf6#
- 2.Qb3#
- 1...Bb3
- 2.Qe5#
- 2.Qf6#
- 2.Qxb3#
- 1...Bc4
- 2.Bxc4#
- 2.Qe5#
- 2.Qf6#
- 1...Bd5
- 2.Re7#
- 2.Qe5#
- 2.Qf6#
- 1...Sb6
- 2.Qe5#
- 2.Qf6#
- 2.Qxb6#
- 1...e3
- 2.Qe5#
- 2.Qf6#
- 1...axb2!
- threat
- 1.Qb4?
- threat
- 2.Qd6#
- 2.Qe7#
- 1...Rxg3
- 2.Qxe4#
- 1...Bxb4!
- threat
- 1.Qb5?
- threat
- 2.Re7#
- 2.Qc6#
- 2.Qe5#
- 1...Rxg3
- 2.Re7#
- 2.Qe5#
- 1...Rxg5
- 2.Sxg5#
- 2.Re7#
- 2.Qc6#
- 1...Bc3
- 2.Re7#
- 2.Qc6#
- 1...Bb4
- 2.Qe5#
- 1...Bd5
- 2.Re7#
- 2.Qxd5#
- 1...axb5!
- threat
- 1.Qb7?
- threat
- 2.Re7#
- 2.Qc6#
- 1...Rxg3
- 2.Qxe4#
- 1...Bd5
- 2.Re7#
- 2.Qxd5#
- 1...Bb4!
- threat
- 1.Qxa8?
- threat
- 2.Re7#
- 2.Qc6#
- 2.Qxa6#
- 1...Rxg3
- 2.Qxe4#
- 1...Ba5
- 2.Re7#
- 2.Qc6#
- 1...Bc4
- 2.Bxc4#
- 2.Re7#
- 2.Qc6#
- 1...Bd5
- 2.Re7#
- 2.Qxd5#
- 1...a5
- 2.Re7#
- 2.Qc6#
- 2.Qa6#
- 1...Bb4!
- threat
- 1.c8Q?
- threat
- 2.Qe5#
- 2.Qd6#
- 2.Qc6#
- 1...Rxg3
- 2.Qe5#
- 1...Rxg5
- 2.Sxg5#
- 2.Qd6#
- 2.Qc6#
- 1...Bc3
- 2.Qd6#
- 2.Qc6#
- 1...Bb4
- 2.Qe5#
- 1...Bd5
- 2.Ra7#
- 2.Rb7#
- 2.Rc7#
- 2.Re7#
- 2.Qe5#
- 2.Qd6#
- 1...Sc7
- 2.Qb6#
- 1...Ba5+!
- threat
- 1.c8S?
- threat
- 2.Qe5#
- 2.Qd6#
- 1...Rxg3
- 2.Qe5#
- 1...Rxg5
- 2.Sxg5#
- 2.Qd6#
- 1...Bc3
- 2.Qd6#
- 1...Bb4
- 2.Qe5#
- 1...Sc7
- 2.Qb6#
- 1...Ba5+!
- threat
- 1.c8B?
- threat
- 2.Qe5#
- 2.Qd6#
- 1...Rxg3
- 2.Qe5#
- 1...Rxg5
- 2.Sxg5#
- 2.Qd6#
- 1...Bc3
- 2.Qd6#
- 1...Bb4
- 2.Qe5#
- 1...Sc7
- 2.Qb6#
- 1...Ba5+!
- threat
- 1.c8R?
- threat
- 2.Rc6#
- 2.Qe5#
- 2.Qd6#
- 1...Rxg3
- 2.Qe5#
- 1...Rxg5
- 2.Sxg5#
- 2.Rc6#
- 2.Qd6#
- 1...Bc3
- 2.Rc6#
- 2.Qd6#
- 1...Bb4
- 2.Qe5#
- 1...Bd5
- 2.Re7#
- 2.Qe5#
- 2.Qd6#
- 1...Sc7
- 2.Qb6#
- 1...Ba5+!
- threat
- 1.Kc8?
- Keys
- 1.Qb1!
- threat
- 2.Qxa2#
- 1...Rxg3
- 2.Qxe4#
- 1...Rxg5
- 2.Sxg5#
- 1...Bxb1
- 2.Bc4#
- 1...Sxc7
- 2.Qb6#
- 1...Bb3
- 2.Qxb3#
- 1...Bc4
- 2.Bxc4#
- 1...Bd5
- 2.Re7#
- 1...Sb6
- 2.Qxb6#
- 1...e3
- 2.Qxg6#
- threat
- 1.Qb1!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 0
- Sets
- R(f);XP(C)::S(F),XR(f)
- B(b);N_GUARD::QAB(G),XB(b)
- B(b);N_GUARD::B(A),XB(b)
- B(b);SBLOCK::R1(E)
- S(j);N_GUARD::QAR(G),XS(j)
- S(j);N_GUARD,XP(D)::QAR(G)
- Tries
- Try
- K(H);P-FLIGHT
- Threat
- S(F)
- Vars
- S(j);CHECK,N_GUARD::QAR(G),XS(j)
- Refutation
- R(f);XS(B)
- Try
- Q(G);
- Threat
- DUALS(3)
- Vars
- B(a);::QAB(G),XB(b)
- Refutation
- P(d);XQ(G)
- Try
- Q(G);
- Threat
- DUALS(2)
- Vars
- R(f);N_GUARD,XS(B)::QAR2(G),XP(e)
- Refutation
- B(a);XQ(G)
- Try
- Q(G);
- Threat
- DUALS(3)
- Vars
- B(a);::QAR1(G)
- Refutation
- P(g);XQ(G)
- Try
- Q(G);
- Threat
- DUALS(2)
- Vars
- R(f);N_GUARD,XS(B)::QAR2(G),XP(e)
- Refutation
- B(a);
- Try
- Q(G);XS(j)
- Threat
- DUALS(3)
- Vars
- R(f);N_GUARD,XS(B)::QAR2(G),XP(e)
- Refutation
- B(a);
- Try
- P(D);
- Threat
- DUALS(3)
- Vars
- R(f);XS(B)::QAR1(G)
- B(a);::QAR1(G)
- S(j);N_GUARD::QAR(G)
- Refutation
- B(a);CHECK
- Try
- P(D);
- Threat
- DUALS(2)
- Vars
- R(f);XS(B)::QAR1(G)
- B(a);::QAR1(G)
- S(j);N_GUARD::QAR(G)
- Refutation
- B(a);CHECK
- Try
- P(D);
- Threat
- DUALS(2)
- Vars
- R(f);XS(B)::QAR1(G)
- B(a);::QAR1(G)
- S(j);N_GUARD::QAR(G)
- Refutation
- B(a);CHECK
- Try
- P(D);
- Threat
- DUALS(3)
- Vars
- R(f);XS(B)::QAR1(G)
- B(a);::QAR1(G)
- S(j);N_GUARD::QAR(G)
- Refutation
- B(a);CHECK
- Try
- Actual
- Q(G);
- Threat
- QAB(G),XB(b)
- Vars
- R(f);N_GUARD,XS(B)::QAR2(G),XP(e)
- R(f);XP(C)::S(F),XR(f)
- B(b);N_GUARD,XQ(G)::B(A)
- S(j);N_GUARD,XP(D)::QAR(G)
- B(b);N_GUARD::QAB(G),XB(b)
- B(b);N_GUARD::B(A),XB(b)
- B(b);SBLOCK::R1(E)
- S(j);N_GUARD::QAR(G),XS(j)
- P(e);OGATE::QAR2(G),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).