MESON Chess Problem Database
Problem Display
PID: 108938 (6Q1/1p6/5r2/4nR2/p7/B7/3R3b/rk5K w - - 0 1)
Meredith, William
Checkmate, 1901
#2
5 + 7
| 6490 | yacpdb | 2009 |
| 14868 | Pirnie Collection | 2014 |
SOLUTION
- SOUND
- Sets
- 1...Ra2
- 2.Qxa2#
- 1...Ra6
- 2.Rf1#
- 1...Rb6
- 2.Rf1#
- 1...Rd6
- 2.Rf1#
- 1...Re6
- 2.Rf1#
- 1...Rg6
- 2.Rf1#
- 1...Rh6
- 2.Rf1#
- 1...Bg1
- 2.Qxg1#
- 1...Bf4
- 2.Qg1#
- 1...Sf3
- 2.Rb5#
- 1...Sg4
- 2.Rb5#
- 1...Sg6
- 2.Rb5#
- 1...Sd7
- 2.Rb5#
- 1...Sf7
- 2.Rb5#
- 1...Ra2
- Tries
- 1.Rxf6?
- threat
- 2.Rf1#
- 2.Rb6#
- 1...Rxa3
- 2.Rf1#
- 1...Ra2
- 2.Rf1#
- 2.Qxa2#
- 1...Bg1
- 2.Rf1#
- 2.Qxg1#
- 1...Bg3
- 2.Rb6#
- 1...Bf4
- 2.Rb6#
- 2.Qg1#
- 1...Sf3
- 2.Rb6#
- 2.Qh7#
- 2.Qg6#
- 1...Sc4
- 2.Rf1#
- 2.Qh7#
- 2.Qg6#
- 1...Sc6
- 2.Rf1#
- 2.Qh7#
- 2.Qg6#
- 1...Sd7
- 2.Rf1#
- 2.Qh7#
- 2.Qg6#
- 1...b5
- 2.Rf1#
- 1...b6
- 2.Rf1#
- 2.Rxb6#
- 1...Sd3!
- threat
- 1.Qc4?
- threat
- 2.Rd1#
- 2.Rb2#
- 2.Qf1#
- 2.Qb5#
- 2.Qc1#
- 2.Qc2#
- 2.Qb4#
- 1...Rxa3
- 2.Qf1#
- 1...Rxf5
- 2.Rd1#
- 2.Rb2#
- 2.Qb5#
- 2.Qc1#
- 2.Qc2#
- 2.Qb4#
- 1...Ra2
- 2.Rd1#
- 2.Qf1#
- 2.Qxa2#
- 2.Qc1#
- 1...Rc6
- 2.Rd1#
- 2.Rb2#
- 2.Rf1#
- 2.Qb5#
- 2.Qb4#
- 1...Rb6
- 2.Rd1#
- 2.Rf1#
- 2.Qf1#
- 2.Qc1#
- 2.Qc2#
- 1...Rd6
- 2.Rb2#
- 2.Rf1#
- 2.Qf1#
- 2.Qb5#
- 2.Qc1#
- 2.Qc2#
- 2.Qb4#
- 1...Bg3
- 2.Rd1#
- 2.Rb2#
- 2.Qb5#
- 2.Qc1#
- 2.Qc2#
- 2.Qb4#
- 1...Bf4
- 2.Rb2#
- 2.Qf1#
- 2.Qb5#
- 2.Qc1#
- 2.Qc2#
- 2.Qb4#
- 1...Sd3
- 2.Qxd3#
- 2.Qc2#
- 1...Sf3
- 2.Rd1#
- 2.Rb2#
- 2.Rb5#
- 2.Qd3#
- 2.Qb5#
- 2.Qc1#
- 2.Qc2#
- 2.Qb4#
- 2.Qe4#
- 1...Sc6
- 2.Rd1#
- 2.Rb2#
- 2.Qf1#
- 2.Qd3#
- 2.Qc1#
- 2.Qc2#
- 2.Qe4#
- 1...b5
- 2.Rd1#
- 2.Rb2#
- 2.Qf1#
- 2.Qxb5#
- 2.Qc1#
- 2.Qc2#
- 2.Qb4#
- 1...Sxc4!
- threat
- 1.Qd5?
- threat
- 2.Qb5#
- 1...Ra2
- 2.Qxa2#
- 1...Rb6
- 2.Rf1#
- 1...Sd3
- 2.Qxd3#
- 1...Sc4
- 2.Qe4#
- 2.Qd3#
- 1...Sc6
- 2.Qe4#
- 2.Qd3#
- 1...b5
- 2.Qxb5#
- 1...Rxa3!
- threat
- 1.Qh7?
- threat
- 2.Rf1#
- 1...Rxf5
- 2.Qxb7#
- 1...Sd3
- 2.Rb5#
- 1...Sf3
- 2.Rb5#
- 2.Rxf6#
- 1...Sg6
- 2.Rb5#
- 1...Bf4!
- threat
- 1.Qg4?
- threat
- 2.Qd1#
- 2.Qb4#
- 1...Rxa3
- 2.Qd1#
- 1...Sxg4
- 2.Rb5#
- 1...Ra2
- 2.Qd1#
- 1...Rc6
- 2.Qb4#
- 1...Rb6
- 2.Rf1#
- 2.Qd1#
- 1...Bf4
- 2.Qd1#
- 2.Qg1#
- 1...Sf3
- 2.Rb5#
- 2.Qb4#
- 2.Qe4#
- 1...Sc4
- 2.Qd1#
- 2.Qe4#
- 1...Sc6
- 2.Qd1#
- 2.Qe4#
- 1...Sd3!
- threat
- 1.Rxf6?
- Keys
- 1.Qg6!
- threat
- 2.Rf1#
- 1...Rxf5
- 2.Qb6#
- 1...Sxg6
- 2.Rb5#
- 1...Bf4
- 2.Qg1#
- 1...Sd3
- 2.Rb5#
- 1...Sf3
- 2.Rb5#
- 2.Rxf6#
- threat
- 1.Qg6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 12
- Sets
- R(a);N_GUARD::QAB1(E),XR(a)
- R(f);N_GUARD::R(D)
- B(c);N_GUARD::QAR(E),XB(c)
- B(c);N_GUARD::QAR(E)
- S(e);OGATE::R(D)
- Tries
- Try
- R(D);XR(f)
- Threat
- DUALS(2)
- Vars
- R(a);XB(C)::R(D)
- B(c);::R(D)
- P(g);::R(D)
- Refutation
- S(e);
- Try
- Q(E);
- Threat
- DUALS(7)
- Vars
- R(a);XB(C)::QAR(E)
- Refutation
- S(e);XQ(E)
- Try
- Q(E);
- Threat
- QAR(E)
- Vars
- R(a);N_GUARD::QAB1(E),XR(a)
- R(f);N_GUARD::R(D)
- S(e);N_GUARD::QAB(E),XS(e)
- P(g);::QAR(E),XP(g)
- Refutation
- R(a);XB(C)
- Try
- Q(E);
- Threat
- QAB(E)+R(D),DCHECK
- Vars
- R(f);N_GUARD,P_SPINR(f),XR(D)::QAR(E),XP(g)
- S(e);OGATE::R(D)
- Refutation
- B(c);
- Try
- Q(E);
- Threat
- DUALS(2)
- Vars
- R(a);XB(C)::QAR2(E)
- S(e);OGATE,XQ(E)::R(D)
- R(a);::QAR2(E)
- R(f);::QAR(E)
- Refutation
- S(e);
- Try
- Actual
- Q(E);
- Threat
- QAB(E)+R(D),DCHECK
- Vars
- R(f);OGATE,P_SPINR(f),XR(D)::QAR(E)
- S(e);OGATE,XQ(E)::R(D)
- B(c);N_GUARD::QAR(E)
- S(e);OGATE::R(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).