MESON Chess Problem Database
Problem Display
PID: 175277 (4n3/1N6/1p2B1n1/1R2p2N/3pkP2/8/4PK2/8 w - - 0 1)
Coppens, JP
Sports Referee, 1927
#2
7 + 6
| 6490 | yacpdb | 2018 |
SOLUTION
- SOUND
- Sets
- 1...Sxf4
- 2.Sg3#
- 1...Sh4
- 2.Rxe5#
- 1...Se7
- 2.Rxe5#
- 1...Sf8
- 2.Rxe5#
- 1...Sh8
- 2.Rxe5#
- 1...Sd6
- 2.Sxd6#
- 1...Sf6
- 2.Sd6#
- 1...Sc7
- 2.Sd6#
- 1...Sg7
- 2.Sd6#
- 1...d3
- 2.Rb4#
- 1...exf4
- 2.Bf5#
- 1...Sxf4
- Tries
- 1.Bh3?
- 1...Sxf4
- 2.Sg3#
- 1...exf4
- 2.Bf5#
- 1...Sd6
- 2.Sxd6#
- 1...Sh4
- 2.Rxe5#
- 1...Se7
- 2.Rxe5#
- 1...Sf8
- 2.Rxe5#
- 1...Sh8
- 2.Rxe5#
- 1...Sf6
- 2.Sd6#
- 1...Sc7
- 2.Sd6#
- 1...Sg7
- 2.Sd6#
- 1...d3!
- 1...Sxf4
- 1.Bg4?
- 1...Sxf4
- 2.Sg3#
- 1...exf4
- 2.Bf3#
- 2.Bf5#
- 1...Sd6
- 2.Sxd6#
- 1...Sh4
- 2.Rxe5#
- 1...Se7
- 2.Rxe5#
- 1...Sf8
- 2.Rxe5#
- 1...Sh8
- 2.Rxe5#
- 1...Sf6
- 2.Sd6#
- 1...Sc7
- 2.Sd6#
- 1...Sg7
- 2.Sd6#
- 1...d3!
- 1...Sxf4
- 1.Bd7?
- 1...Sxf4
- 2.Sg3#
- 1...exf4
- 2.Bf5#
- 2.Bc6#
- 1...Sd6
- 2.Sxd6#
- 1...Sh4
- 2.Rxe5#
- 1...Se7
- 2.Rxe5#
- 1...Sf8
- 2.Rxe5#
- 1...Sh8
- 2.Rxe5#
- 1...Sf6
- 2.Sd6#
- 1...Sc7
- 2.Sd6#
- 1...Sg7
- 2.Sd6#
- 1...d3!
- 1...Sxf4
- 1.Bc8?
- 1...Sxf4
- 2.Sg3#
- 1...exf4
- 2.Bf5#
- 1...Sd6
- 2.Sxd6#
- 1...Sh4
- 2.Rxe5#
- 1...Se7
- 2.Rxe5#
- 1...Sf8
- 2.Rxe5#
- 1...Sh8
- 2.Rxe5#
- 1...Sf6
- 2.Sd6#
- 1...Sc7
- 2.Sd6#
- 1...Sg7
- 2.Sd6#
- 1...d3!
- 1...Sxf4
- 1.Rc5?
- 1...Sxf4
- 2.Sg3#
- 1...exf4
- 2.Bf5#
- 1...bxc5
- 2.Sxc5#
- 1...d3
- 2.Rc4#
- 1...Sh4
- 2.Rxe5#
- 1...Se7
- 2.Rxe5#
- 1...Sf8
- 2.Rxe5#
- 1...Sh8
- 2.Rxe5#
- 1...Sd6
- 2.Sxd6#
- 1...Sf6
- 2.Sd6#
- 1...Sc7
- 2.Sd6#
- 1...Sg7
- 2.Sd6#
- 1...b5!
- 1...Sxf4
- 1.Rd5?
- 1...Sxf4
- 2.Sg3#
- 1...Sh4
- 2.Rxe5#
- 1...Se7
- 2.Rxe5#
- 1...Sf8
- 2.Rxe5#
- 1...Sh8
- 2.Rxe5#
- 1...Sd6
- 2.Sxd6#
- 1...Sf6
- 2.Sd6#
- 1...Sc7
- 2.Sd6#
- 1...Sg7
- 2.Sd6#
- 1...d3
- 2.exd3#
- 1...b5
- 2.Sc5#
- 1...exf4!
- 1...Sxf4
- 1.Rxb6?
- threat
- 2.Sc5#
- 1...d3
- 2.Rb4#
- 1...exf4!
- threat
- 1.Bh3?
- Keys
- 1.Ra5!
- 1...Sxf4
- 2.Sg3#
- 1...exf4
- 2.Bf5#
- 1...bxa5
- 2.Sc5#
- 1...d3
- 2.Ra4#
- 1...Sh4
- 2.Rxe5#
- 1...Se7
- 2.Rxe5#
- 1...Sf8
- 2.Rxe5#
- 1...Sh8
- 2.Rxe5#
- 1...Sd6
- 2.Sxd6#
- 1...Sf6
- 2.Sd6#
- 1...Sc7
- 2.Sd6#
- 1...Sg7
- 2.Sd6#
- 1...b5
- 2.Sc5#
- 1...Sxf4
- 1.Ra5!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 1
- ADDED MATES = 2
- REMOVED MATES = 0
- Sets
- S(e);SBLOCK,XP(C)::S(E)
- S(e);N_GUARD::R1(D),XP(c)
- S(f);N_GUARD::S(G),XS(f)
- S(f);N_GUARD::S(G)
- P(a);OGATEB::R(D)
- P(c);XP(C)::B(F)
- Tries
- Try
- B(F);
- Vars
- S(e);SBLOCK,XP(C)::S(E)
- P(c);XP(C)::B(F)
- S(f);N_GUARD::S(G),XS(f)
- S(e);N_GUARD::R1(D),XP(c)
- S(f);N_GUARD::S(G)
- Refutation
- P(a);
- Try
- B(F);
- Vars
- S(e);SBLOCK,XP(C)::S(E)
- S(f);N_GUARD::S(G),XS(f)
- S(e);N_GUARD::R1(D),XP(c)
- S(f);N_GUARD::S(G)
- Refutation
- P(a);
- Try
- B(F);
- Vars
- S(e);SBLOCK,XP(C)::S(E)
- S(f);N_GUARD::S(G),XS(f)
- S(e);N_GUARD::R1(D),XP(c)
- S(f);N_GUARD::S(G)
- Refutation
- P(a);
- Try
- B(F);
- Vars
- S(e);SBLOCK,XP(C)::S(E)
- P(c);XP(C)::B(F)
- S(f);N_GUARD::S(G),XS(f)
- S(e);N_GUARD::R1(D),XP(c)
- S(f);N_GUARD::S(G)
- Refutation
- P(a);
- Try
- R(D);
- Vars
- S(e);SBLOCK,XP(C)::S(E)
- P(c);XP(C)::B(F)
- P(d);XR(D)::S(G),XP(d)
- P(a);OGATEB::R(D)
- S(e);N_GUARD::R1(D),XP(c)
- S(f);N_GUARD::S(G),XS(f)
- S(f);N_GUARD::S(G)
- Refutation
- P(d);
- Try
- R(D);
- Vars
- S(e);SBLOCK,XP(C)::S(E)
- S(e);N_GUARD::R1(D),XP(c)
- S(f);N_GUARD::S(G),XS(f)
- S(f);N_GUARD::S(G)
- P(a);OGATE::P(A),XP(a)
- P(d);N_GUARD::S(G)
- Refutation
- P(c);XP(C)
- Try
- R(D);XP(d)
- Threat
- S(G)
- Vars
- P(a);OGATEB::R(D)
- Refutation
- P(c);XP(C)
- Try
- Actual
- R(D);
- Vars
- S(e);SBLOCK,XP(C)::S(E)
- P(c);XP(C)::B(F)
- P(d);N_GUARD,XR(D)::S(G)
- P(a);OGATEB::R(D)
- S(e);N_GUARD::R1(D),XP(c)
- S(f);N_GUARD::S(G),XS(f)
- S(f);N_GUARD::S(G)
- P(d);N_GUARD::S(G)
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).