MESON Chess Problem Database
Problem Display
PID: 23895 (4n2B/1q3p2/3R2NK/2n2k2/7R/3r2PP/B1N5/5r2 w - - 0 1)
Lincoln, Robert A
3rd Prize, diagrammes, 1996
#2
9 + 7
| 145 | StrateGems | 1998 |
| 56 | The Problemist | 2018 |
SOLUTION
- SOUND
- Sets
- 1...Qh1
- 2.Se7#
- 1...Qg2
- 2.Se7#
- 1...Qf3
- 2.Se7#
- 1...Qe4
- 2.Rh5#
- 1...Qd5
- 2.Se7#
- 1...Qa6
- 2.Se7#
- 1...Qc6
- 2.Se7#
- 1...Qa8
- 2.Se7#
- 1...Qc8
- 2.Se7#
- 1...Qb1
- 2.Se7#
- 1...Qb2
- 2.Se7#
- 1...Qb3
- 2.Se7#
- 1...Qb4
- 2.Se7#
- 1...Qb5
- 2.Se7#
- 1...Qb6
- 2.Se7#
- 1...Qe7
- 2.Sxe7#
- 1...Qb8
- 2.Se7#
- 1...Ra1
- 2.Rf4#
- 1...Rb1
- 2.Rf4#
- 1...Rc1
- 2.Rf4#
- 1...Rfd1
- 2.Rf4#
- 1...Re1
- 2.Rf4#
- 1...Rg1
- 2.Rf4#
- 1...Rh1
- 2.Rf4#
- 1...Rf4
- 2.Rxf4#
- 1...Rdd1
- 2.Se3#
- 1...Rd2
- 2.Se3#
- 1...Ra3
- 2.Sd4#
- 1...Rb3
- 2.Sd4#
- 1...Rc3
- 2.Sd4#
- 1...Re3
- 2.Sxe3#
- 2.Sd4#
- 1...Rf3
- 2.Sd4#
- 1...Rxg3
- 2.Sd4#
- 1...Rd4
- 2.Se3#
- 2.Sxd4#
- 1...Rd5
- 2.Se3#
- 1...Rxd6
- 2.Se3#
- 1...Se4
- 2.g4#
- 1...Sd7
- 2.Se7#
- 1...Sf6
- 2.Rxf6#
- 1...Sc7
- 2.Se7#
- 2.Rf6#
- 1...Qh1
- Tries
- 1.Bd5?
- threat
- 2.Rh5#
- 2.g4#
- 1...Qxd5
- 2.Se7#
- 1...Rxg3
- 2.Sd4#
- 1...Rxd5
- 2.Se3#
- 1...Qb4
- 2.Se7#
- 2.Rh5#
- 1...Qe7
- 2.Sxe7#
- 2.g4#
- 1...Rg1
- 2.Rf4#
- 2.Rh5#
- 1...Rf4
- 2.Rxf4#
- 2.Rh5#
- 1...Rd4
- 2.Se3#
- 2.Sxd4#
- 2.Rh5#
- 1...Se4
- 2.g4#
- 1...Se6
- 2.g4#
- 1...Sf6
- 2.Rxf6#
- 1...Sg7
- 2.g4#
- 1...fxg6!
- threat
- 1.Bd5?
- Keys
- 1.Bb1!
- threat
- 2.Se3#
- 2.Sd4#
- 1...Qxb1
- 2.Se7#
- 1...Rxb1
- 2.Rf4#
- 1...Rxd6
- 2.Sd4#
- 1...Sxd6
- 2.Sd4#
- 1...Rf4
- 2.Rxf4#
- 1...Qf3
- 2.Sd4#
- 2.Se7#
- 1...Qe4
- 2.Rh5#
- 1...Qd5
- 2.Se3#
- 2.Se7#
- 1...Qb2
- 2.Se3#
- 2.Se7#
- 1...Qb4
- 2.Se3#
- 2.Se7#
- 1...Qe7
- 2.Sd4#
- 2.Sxe7#
- 1...Re1
- 2.Sd4#
- 2.Rf4#
- 1...Rff3
- 2.Sd4#
- 1...Re3
- 2.Sxe3#
- 2.Sd4#
- 1...Rd4
- 2.Se3#
- 2.Sxd4#
- 1...Sb3
- 2.Se3#
- 1...Se4
- 2.g4#
- 1...Se6
- 2.Se3#
- threat
- 1.Bb1!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 4
- REMOVED MATES = 31
- Sets
- Q(e);N_GUARD::S(G)
- Q(e);SBLOCK::R(E)
- Q(e);N_GUARD::S(G),XQ(e)
- R(a);N_GUARD::R1(E)
- R(a);N_GUARD::R1(E),XR(a)
- R(b);N_GUARD::S(B)
- R(b);N_GUARD,XP(C)::S(B)
- R(b);N_GUARD,P_PINS(G),XR(F)::S(B)
- S(c);SBLOCK::P(C)
- S(c);S_CUTQ(e)::S(G)
- S(g);N_GUARD::R1(F),XS(g)
- Tries
- Try
- B(A);
- Threat
- DUALS(2)
- Vars
- Q(e);N_GUARD,XB(A)::S(G)
- R(b);N_GUARD,XP(C)::S(B)
- R(b);N_GUARD,XB(A)::S(B)
- S(c);::P(C)
- S(g);N_GUARD::R1(F),XS(g)
- S(g);::P(C)
- Refutation
- P(f);XS(G)
- Try
- Actual
- B(A);
- Threat
- DUALS(2)
- Vars
- Q(e);N_GUARD,XB(A)::S(G)
- R(a);N_GUARD,XB(A)::R1(E)
- R(b);P_PINS(G),XR(F)::B(A)+S(B),DCHECK
- S(g);XR(F)::S(B)
- R(a);N_GUARD::R1(E),XR(a)
- Q(e);SBLOCK::R(E)
- R(a);::S(B)
- S(c);::S(B)
- S(c);SBLOCK::P(C)
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).