MESON Chess Problem Database
Problem Display
PID: 223287 (2R5/1P2K3/3pN3/3kp3/8/1r5P/N7/1Q6 w - - 0 1)
Barrier, ?
Newark Sunday Call, 1885
#2
7 + 4
| 6490 | yacpdb | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Rxb1
- 2.Sc3#
- 1...Rb2
- 2.Sc3#
- 2.Qd3#
- 1...Ra3
- 2.Sb4#
- 1...Rc3
- 2.Sxc3#
- 2.Sb4#
- 1...Rd3
- 2.Qxd3#
- 1...Re3
- 2.Sb4#
- 1...Rf3
- 2.Sb4#
- 1...Rg3
- 2.Sb4#
- 1...Rxh3
- 2.Sb4#
- 1...Rb4
- 2.Sc3#
- 2.Sxb4#
- 1...Rb5
- 2.Sc3#
- 2.Qd3#
- 1...Rb6
- 2.Sc3#
- 2.Qd3#
- 1...Rxb7+
- 2.Qxb7#
- 1...Rxb1
- Tries
- 1.Kf6?
- 1...Rxb1
- 2.Sc3#
- 1...Rxh3
- 2.Sb4#
- 1...Rxb7
- 2.Sc3#
- 2.Qd3#
- 2.Qxb7#
- 1...Rd3
- 2.Qxd3#
- 1...Rb2
- 2.Sc3#
- 2.Qd3#
- 1...Ra3
- 2.Sb4#
- 1...Rc3
- 2.Sxc3#
- 2.Sb4#
- 1...Re3
- 2.Sb4#
- 1...Rg3
- 2.Sb4#
- 1...Rb4
- 2.Sc3#
- 2.Sxb4#
- 1...Rb5
- 2.Sc3#
- 2.Qd3#
- 1...Rb6
- 2.Sc3#
- 2.Qd3#
- 1...e4
- 2.Qxb3#
- 1...Rf3+!
- 1...Rxb1
- 1.Kd7?
- 1...Rxb7+
- 2.Qxb7#
- 1...Rxb1
- 2.Sc3#
- 1...Rxh3
- 2.Sb4#
- 1...Rd3
- 2.Qxd3#
- 1...Rb2
- 2.Sc3#
- 2.Qd3#
- 1...Ra3
- 2.Sb4#
- 1...Rc3
- 2.Sxc3#
- 2.Sb4#
- 1...Re3
- 2.Sb4#
- 1...Rf3
- 2.Sb4#
- 1...Rg3
- 2.Sb4#
- 1...Rb4
- 2.Sc3#
- 2.Sxb4#
- 1...Rb5
- 2.Sc3#
- 2.Qd3#
- 1...Rb6
- 2.Sc3#
- 2.Qd3#
- 1...e4!
- 1...Rxb7+
- 1.Rc7?
- 1...Rxb1
- 2.Sc3#
- 1...Rxh3
- 2.Sb4#
- 1...Rxb7
- 2.Sc3#
- 2.Qd3#
- 2.Qxb7#
- 1...Rd3
- 2.Qxd3#
- 1...Rb2
- 2.Sc3#
- 2.Qd3#
- 1...Ra3
- 2.Sb4#
- 1...Rc3
- 2.Sxc3#
- 2.Sb4#
- 1...Re3
- 2.Sb4#
- 1...Rf3
- 2.Sb4#
- 1...Rg3
- 2.Sb4#
- 1...Rb4
- 2.Sc3#
- 2.Sxb4#
- 1...Rb5
- 2.Sc3#
- 2.Qd3#
- 1...Rb6
- 2.Sc3#
- 2.Qd3#
- 1...e4!
- 1...Rxb1
- 1.Qf5?
- 1...Rxh3
- 2.Sb4#
- 1...Rb1
- 2.Sc3#
- 2.Qd3#
- 1...Rb2
- 2.Sc3#
- 2.Qd3#
- 1...Ra3
- 2.Sb4#
- 1...Rc3
- 2.Sxc3#
- 2.Sb4#
- 1...Rd3
- 2.Sb4#
- 2.Qxd3#
- 1...Re3
- 2.Sb4#
- 1...Rf3
- 2.Sb4#
- 1...Rg3
- 2.Sb4#
- 1...Rb4
- 2.Sc3#
- 2.Sxb4#
- 1...Rb5
- 2.Sc3#
- 2.Qd3#
- 1...Rb6
- 2.Sc3#
- 2.Qd3#
- 1...Rxb7+!
- 1...Rxh3
- 1.Qg6?
- 1...Rxh3
- 2.Sb4#
- 1...e4
- 2.Qf5#
- 2.Qh5#
- 2.Qg5#
- 1...Rb1
- 2.Sc3#
- 2.Qd3#
- 1...Rb2
- 2.Sc3#
- 2.Qd3#
- 1...Ra3
- 2.Sb4#
- 1...Rc3
- 2.Sxc3#
- 2.Sb4#
- 1...Rd3
- 2.Sb4#
- 2.Qxd3#
- 1...Re3
- 2.Sb4#
- 1...Rf3
- 2.Sb4#
- 1...Rg3
- 2.Sb4#
- 1...Rb4
- 2.Sc3#
- 2.Sxb4#
- 1...Rb5
- 2.Sc3#
- 2.Qd3#
- 1...Rb6
- 2.Sc3#
- 2.Qd3#
- 1...Rxb7+!
- 1...Rxh3
- 1.Qh7?
- 1...Rxh3
- 2.Sb4#
- 1...e4
- 2.Qf5#
- 2.Qh5#
- 1...Rb1
- 2.Sc3#
- 2.Qd3#
- 1...Rb2
- 2.Sc3#
- 2.Qd3#
- 1...Ra3
- 2.Sb4#
- 1...Rc3
- 2.Sxc3#
- 2.Sb4#
- 1...Rd3
- 2.Sb4#
- 2.Qxd3#
- 1...Re3
- 2.Sb4#
- 1...Rf3
- 2.Sb4#
- 1...Rg3
- 2.Sb4#
- 1...Rb4
- 2.Sc3#
- 2.Sxb4#
- 1...Rb5
- 2.Sc3#
- 2.Qd3#
- 1...Rb6
- 2.Sc3#
- 2.Qd3#
- 1...Rxb7+!
- 1...Rxh3
- 1.Qd1+?
- 1...Rd3
- 2.Sc3#
- 2.Qxd3#
- 1...Ke4!
- 1...Rd3
- 1.Qh1+?
- 1...Rf3
- 2.Sc3#
- 1...e4!
- 1...Rf3
- 1.h4?
- 1...Rxb7+
- 2.Qxb7#
- 1...Rxb1
- 2.Sc3#
- 1...Rd3
- 2.Qxd3#
- 1...Rb2
- 2.Sc3#
- 2.Qd3#
- 1...Ra3
- 2.Sb4#
- 1...Rc3
- 2.Sxc3#
- 2.Sb4#
- 1...Re3
- 2.Sb4#
- 1...Rf3
- 2.Sb4#
- 1...Rg3
- 2.Sb4#
- 1...Rh3
- 2.Sb4#
- 1...Rb4
- 2.Sc3#
- 2.Sxb4#
- 1...Rb5
- 2.Sc3#
- 2.Qd3#
- 1...Rb6
- 2.Sc3#
- 2.Qd3#
- 1...e4!
- 1...Rxb7+
- 1.b8S?
- 1...Rb7+
- 2.Qxb7#
- 1...Rxb1
- 2.Sc3#
- 1...Rxh3
- 2.Sb4#
- 2.Qb7#
- 1...Rxb8
- 2.Sc3#
- 2.Qd3#
- 1...Rd3
- 2.Qxd3#
- 2.Qb7#
- 1...Rb2
- 2.Sc3#
- 2.Qd3#
- 1...Ra3
- 2.Sb4#
- 2.Qb7#
- 1...Rc3
- 2.Sxc3#
- 2.Sb4#
- 1...Re3
- 2.Sb4#
- 2.Qb7#
- 1...Rf3
- 2.Sb4#
- 2.Qb7#
- 1...Rg3
- 2.Sb4#
- 2.Qb7#
- 1...Rb4
- 2.Sc3#
- 2.Sxb4#
- 1...Rb5
- 2.Sc3#
- 2.Qd3#
- 1...Rb6
- 2.Sc3#
- 2.Qd3#
- 1...e4!
- 1...Rb7+
- 1.b8B?
- 1...Rb7+
- 2.Qxb7#
- 1...Rxb1
- 2.Sc3#
- 1...Rxh3
- 2.Sb4#
- 2.Qb7#
- 1...Rxb8
- 2.Sc3#
- 2.Qd3#
- 1...Rd3
- 2.Qxd3#
- 2.Qb7#
- 1...Rb2
- 2.Sc3#
- 2.Qd3#
- 1...Ra3
- 2.Sb4#
- 2.Qb7#
- 1...Rc3
- 2.Sxc3#
- 2.Sb4#
- 1...Re3
- 2.Sb4#
- 2.Qb7#
- 1...Rf3
- 2.Sb4#
- 2.Qb7#
- 1...Rg3
- 2.Sb4#
- 2.Qb7#
- 1...Rb4
- 2.Sc3#
- 2.Sxb4#
- 1...Rb5
- 2.Sc3#
- 2.Qd3#
- 1...Rb6
- 2.Sc3#
- 2.Qd3#
- 1...e4!
- 1...Rb7+
- 1.b8R?
- 1...Rb7+
- 2.Qxb7#
- 1...Rxb1
- 2.Sc3#
- 1...Rxh3
- 2.Sb4#
- 2.Rb5#
- 2.Qb7#
- 1...Rxb8
- 2.Sc3#
- 2.Qd3#
- 1...Rd3
- 2.Qxd3#
- 2.Qb7#
- 1...Rb2
- 2.Sc3#
- 2.Qd3#
- 1...Ra3
- 2.Sb4#
- 2.Rb5#
- 2.Qb7#
- 1...Rc3
- 2.Sxc3#
- 2.Sb4#
- 1...Re3
- 2.Sb4#
- 2.Rb5#
- 2.Qb7#
- 1...Rf3
- 2.Sb4#
- 2.Rb5#
- 2.Qb7#
- 1...Rg3
- 2.Sb4#
- 2.Rb5#
- 2.Qb7#
- 1...Rb4
- 2.Sc3#
- 2.Sxb4#
- 1...Rb5
- 2.Sc3#
- 2.Rxb5#
- 2.Qd3#
- 1...Rb6
- 2.Sc3#
- 2.Qd3#
- 1...e4!
- 1...Rb7+
- 1.Kf6?
- Keys
- 1.b8Q!
- threat
- 2.Qxd6#
- 2.Q8xb3#
- 1...Rb7+
- 2.Q1xb7#
- 2.Q8xb7#
- 1...Rxb1
- 2.Sc3#
- 1...Rxh3
- 2.Sb4#
- 2.Qxd6#
- 2.Q1b7#
- 2.Q8b5#
- 2.Q8b7#
- 2.Qa8#
- 1...Rxb8
- 2.Sc3#
- 2.Qd3#
- 1...Rd3
- 2.Qxd3#
- 2.Q1b7#
- 2.Q8b7#
- 2.Qa8#
- 1...e4
- 2.Qxd6#
- 1...Rb2
- 2.Sc3#
- 2.Qd3#
- 2.Qxd6#
- 1...Ra3
- 2.Sb4#
- 2.Qxd6#
- 2.Q1b7#
- 2.Q8b5#
- 2.Q8b7#
- 1...Rc3
- 2.Sxc3#
- 2.Sb4#
- 2.Qxd6#
- 1...Re3
- 2.Sb4#
- 2.Qxd6#
- 2.Q1b7#
- 2.Q8b5#
- 2.Q8b7#
- 2.Qa8#
- 1...Rf3
- 2.Sb4#
- 2.Qxd6#
- 2.Q1b7#
- 2.Q8b5#
- 2.Q8b7#
- 2.Qa8#
- 1...Rg3
- 2.Sb4#
- 2.Qxd6#
- 2.Q1b7#
- 2.Q8b5#
- 2.Q8b7#
- 2.Qa8#
- 1...Rb4
- 2.Sc3#
- 2.Sxb4#
- 2.Qxd6#
- 1...Rb5
- 2.Sc3#
- 2.Qd3#
- 2.Qxd6#
- 2.Q8xb5#
- 1...Rb6
- 2.Sc3#
- 2.Qd3#
- threat
- 1.b8Q!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 7
- Sets
- R(a);N_GUARD,XQ(A)::S(B)
- R(a);N_GUARD::S(B)
- R(a);N_GUARD::QAR2(A),XR(a)
- R(a);N_GUARD,XP(C)::S(B)
- R(a);CHECK,OGATE,XP(E)::QAB(A),XR(a)
- Tries
- Try
- K(F);S_FLIGHT
- Vars
- R(a);N_GUARD,XQ(A)::S(B)
- R(a);N_GUARD,XP(C)::S(B)
- R(a);N_GUARD::QAR2(A),XR(a)
- R(a);N_GUARD::S(B)
- P(c);SBLOCK::QAB(A),XR(a)
- Refutation
- R(a);CHECK
- Try
- K(F);P-FLIGHT
- Vars
- R(a);CHECK,OGATE,XP(E)::QAB(A),XR(a)
- R(a);N_GUARD,XQ(A)::S(B)
- R(a);N_GUARD,XP(C)::S(B)
- R(a);N_GUARD::QAR2(A),XR(a)
- R(a);N_GUARD::S(B)
- Refutation
- P(c);
- Try
- R(G);
- Vars
- R(a);N_GUARD,XQ(A)::S(B)
- R(a);N_GUARD,XP(C)::S(B)
- R(a);N_GUARD::QAR2(A),XR(a)
- R(a);N_GUARD::S(B)
- Refutation
- P(c);
- Try
- Q(A);P_PINP(c)
- Vars
- R(a);N_GUARD,XP(C)::S(B)
- R(a);N_GUARD::S(B)
- Refutation
- R(a);CHECK,XP(E)
- Try
- Q(A);
- Vars
- R(a);N_GUARD,XP(C)::S(B)
- R(a);N_GUARD::S(B)
- Refutation
- R(a);CHECK,XP(E)
- Try
- Q(A);
- Vars
- R(a);N_GUARD,XP(C)::S(B)
- R(a);N_GUARD::S(B)
- Refutation
- R(a);CHECK,XP(E)
- Try
- Q(A);CHECK
- Refutation
- K(b);S_FLIGHT
- Try
- Q(A);CHECK
- Vars
- R(a);P_SPINR(a)::S(B)
- Refutation
- P(c);P_SPINP(c)
- Try
- P(C);
- Vars
- R(a);CHECK,OGATE,XP(E)::QAB(A),XR(a)
- R(a);N_GUARD,XQ(A)::S(B)
- R(a);N_GUARD::QAR2(A),XR(a)
- R(a);N_GUARD::S(B)
- Refutation
- P(c);
- Try
- P(E);
- Vars
- R(a);CHECK,OGATE::QAB(A),XR(a)
- R(a);N_GUARD,XQ(A)::S(B)
- Refutation
- P(c);
- Try
- P(E);
- Vars
- R(a);CHECK,OGATE::QAB(A),XR(a)
- R(a);N_GUARD,XQ(A)::S(B)
- Refutation
- P(c);
- Try
- P(E);
- Vars
- R(a);CHECK,OGATE::QAB(A),XR(a)
- R(a);N_GUARD,XQ(A)::S(B)
- Refutation
- P(c);
- Try
- Actual
- P(E);
- Threat
- DUALS(2)
- Vars
- R(a);N_GUARD,XQ(A)::S(B)
- P(c);::QAR1(E),XP(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).