MESON Chess Problem Database
Problem Display
PID: 208789 (4R3/1n6/b3Np2/2PpkB2/2qN2K1/8/3rP3/1Q6 w - - 0 1)
Brown, Theodore Morris
St. Louis Globe Democrat, 1876
#2
8 + 7
| 6490 | yacpdb | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Qa2
- 2.Sf3#
- 2.Sc6#
- 1...Qb3
- 2.Sc6#
- 1...Qd3
- 2.Sc6#
- 1...Qb5
- 2.Sf3#
- 1...Qc1
- 2.Sf3#
- 2.Sc6#
- 1...Qc2
- 2.Sf3#
- 2.Sc6#
- 1...Qc3
- 2.Sc6#
- 1...Qxd4+
- 2.Sf4#
- 1...Rxd4+
- 2.Sf4#
- 1...Sa5
- 2.Qb8#
- 1...Sxc5
- 2.Qb8#
- 1...Sd8
- 2.Qb8#
- 1...Qa2
- Tries
- 1.Qd3?
- threat
- 2.Sf4#
- 2.Sg5#
- 2.Sc7#
- 2.Sg7#
- 2.Sd8#
- 2.Sf8#
- 2.Qe3#
- 2.Qg3#
- 1...Qxd4+
- 2.Sxd4#
- 2.Sf4#
- 1...Qxd3
- 2.Sc6#
- 1...Qxc5
- 2.Qg3#
- 1...Rxe2
- 2.Sf4#
- 2.Sg5#
- 2.Sc7#
- 2.Sg7#
- 2.Sd8#
- 2.Sf8#
- 2.Qg3#
- 1...Sxc5
- 2.Qg3#
- 1...Qb3
- 2.Sf3#
- 2.Sc6#
- 2.Sf4#
- 2.Sg5#
- 2.Sc7#
- 2.Sg7#
- 2.Sd8#
- 2.Sf8#
- 1...Qb5
- 2.Sf3#
- 2.Qe3#
- 2.Qg3#
- 1...Qc2
- 2.Sf3#
- 2.Sc6#
- 2.Sf4#
- 2.Sg5#
- 2.Sc7#
- 2.Sg7#
- 2.Sd8#
- 2.Sf8#
- 2.Qg3#
- 1...Qc3
- 2.Sf3#
- 2.Sc6#
- 2.Sf4#
- 2.Sg5#
- 2.Sc7#
- 2.Sg7#
- 2.Sd8#
- 2.Sf8#
- 1...Qa4
- 2.Qe3#
- 2.Qg3#
- 1...Bb5
- 2.Qe3#
- 2.Qg3#
- 1...Sd6
- 2.Qg3#
- 1...Sd8
- 2.Sxd8#
- 2.Qe3#
- 2.Qg3#
- 1...Rxd3!
- threat
- 1.Qf1?
- threat
- 2.Qf4#
- 1...Qxd4+
- 2.Sf4#
- 1...Rxd4+
- 2.Sf4#
- 1...Qxe2+!
- threat
- 1.Qg1?
- threat
- 2.Sf4#
- 2.Sg5#
- 2.Sc7#
- 2.Sg7#
- 2.Sd8#
- 2.Sf8#
- 2.Qh2#
- 2.Qe3#
- 2.Qg3#
- 1...Qxd4+
- 2.Sxd4#
- 2.Sf4#
- 1...Rxd4+
- 2.Sxd4#
- 2.Sf4#
- 1...Qxc5
- 2.Qh2#
- 2.Qg3#
- 1...Rxe2
- 2.Sf4#
- 2.Sg5#
- 2.Sc7#
- 2.Sg7#
- 2.Sd8#
- 2.Sf8#
- 2.Qg3#
- 1...Sxc5
- 2.Qh2#
- 2.Qg3#
- 1...Qb3
- 2.Sc6#
- 2.Sf4#
- 2.Sg5#
- 2.Sc7#
- 2.Sg7#
- 2.Sd8#
- 2.Sf8#
- 1...Qd3
- 2.Sc6#
- 2.Sf4#
- 2.Sg5#
- 2.Sc7#
- 2.Sg7#
- 2.Sd8#
- 2.Sf8#
- 1...Qb5
- 2.Sf3#
- 2.Qh2#
- 2.Qe3#
- 2.Qg3#
- 1...Qc2
- 2.Sf3#
- 2.Sc6#
- 2.Sf4#
- 2.Sg5#
- 2.Sc7#
- 2.Sg7#
- 2.Sd8#
- 2.Sf8#
- 2.Qh2#
- 2.Qg3#
- 1...Qc3
- 2.Sc6#
- 2.Sf4#
- 2.Sg5#
- 2.Sc7#
- 2.Sg7#
- 2.Sd8#
- 2.Sf8#
- 1...Qa4
- 2.Qh2#
- 2.Qe3#
- 2.Qg3#
- 1...Rd3
- 2.Sf4#
- 2.Sg5#
- 2.Sc7#
- 2.Sg7#
- 2.Sd8#
- 2.Sf8#
- 1...Bb5
- 2.Qh2#
- 2.Qe3#
- 2.Qg3#
- 1...Sd6
- 2.Qh2#
- 2.Qg3#
- 1...Sd8
- 2.Sxd8#
- 2.Qh2#
- 2.Qe3#
- 2.Qg3#
- 1...Qxe2+!
- threat
- 1.Qd3?
- Keys
- 1.Qe1!
- threat
- 2.Qg3#
- 1...Qxe2+
- 2.Sf3#
- 1...Qxd4+
- 2.Sf4#
- 1...Rxd4+
- 2.Sf4#
- 1...Qb3
- 2.Sc6#
- 1...Qd3
- 2.Sc6#
- 1...Qc3
- 2.Sc6#
- 1...Rd3
- 2.exd3#
- threat
- 1.Qe1!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 4
- Sets
- Q(b);N_PINS(C)::S(C)
- Q(b);CHECK,SBLOCK,XS(C)::R(H)+S(G)
- R(a);CHECK,SBLOCK,XS(C)::R(H)+S(G)
- S(g);OGATE::QAB(A)
- S(g);OGATE,XP(E)::QAB(A)
- Tries
- Try
- Q(A);
- Threat
- DUALS(8)
- Vars
- Q(b);N_PINS(C),XQ(A)::S(C)
- Q(b);N_PINS(C),XP(E)::QAB(A)
- S(g);XP(E)::QAB(A)
- S(g);::QAB(A)
- Refutation
- R(a);XQ(A)
- Try
- Q(A);
- Threat
- QAB1(A)
- Vars
- Q(b);CHECK,SBLOCK,XS(C)::R(H)+S(G)
- R(a);CHECK,SBLOCK,XS(C)::R(H)+S(G)
- Refutation
- Q(b);CHECK,N_PINS(C),XP(B)
- Try
- Q(A);
- Threat
- DUALS(9)
- Refutation
- Q(b);CHECK,N_PINS(C),XP(B)
- Try
- Actual
- Q(A);
- Threat
- QAB(A)
- Vars
- Q(b);CHECK,N_PINS(C),P_SPINQ(b),XP(B)::S(C)
- Q(b);CHECK,SBLOCK,XS(C)::R(H)+S(G)
- R(a);CHECK,SBLOCK,XS(C)::R(H)+S(G)
- Q(b);N_PINS(C)::S(C)
- R(a);OGATE::QAR(A)+P(B),XR(a)
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).