MESON Chess Problem Database
Problem Display
PID: 238134 (8/4p3/6K1/1N1NBR2/1pBPk3/3n4/4Pn2/8 w - - 0 1)
Hermanson, Halvar
Schach, 1974
#2
8 + 5
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Sd1
- 2.exd3#
- 1...Sh1
- 2.exd3#
- 1...Sh3
- 2.exd3#
- 1...Sg4
- 2.exd3#
- 1...Sc1
- 2.Rf4#
- 1...Se1
- 2.Rf4#
- 1...Sb2
- 2.Rf4#
- 1...Sf4+
- 2.Rxf4#
- 1...Sc5
- 2.Rf4#
- 1...Sxe5+
- 2.Rxe5#
- 1...b3
- 2.Sbc3#
- 1...e6
- 2.Sd6#
- 1...Sd1
- Tries
- 1.Kg5?
- 1...Sxe5
- 2.Rf4#
- 2.Rxe5#
- 1...Sd1
- 2.exd3#
- 1...Sh1
- 2.exd3#
- 1...Sg4
- 2.exd3#
- 1...Sc1
- 2.Rf4#
- 1...Se1
- 2.Rf4#
- 1...Sb2
- 2.Rf4#
- 1...Sf4
- 2.Rxf4#
- 1...Sc5
- 2.Rf4#
- 1...b3
- 2.Sbc3#
- 1...e6
- 2.Sd6#
- 1...Sh3+!
- 1...Sxe5
- 1.Bg7?
- 1...Sf4+
- 2.Rxf4#
- 1...Se5+
- 2.Rxe5#
- 1...Sd1
- 2.Bxd3#
- 2.exd3#
- 1...Sh1
- 2.Bxd3#
- 2.exd3#
- 1...Sh3
- 2.Bxd3#
- 2.exd3#
- 1...Sg4
- 2.Bxd3#
- 2.exd3#
- 1...Sc1
- 2.Rf4#
- 2.Re5#
- 1...Se1
- 2.Rf4#
- 2.Re5#
- 1...Sb2
- 2.Rf4#
- 2.Re5#
- 1...Sc5
- 2.Rf4#
- 2.Re5#
- 1...b3
- 2.Sbc3#
- 1...e6
- 2.Sd6#
- 1...e5!
- 1...Sf4+
- 1.Bh8?
- 1...Sf4+
- 2.Rxf4#
- 1...Se5+
- 2.Rxe5#
- 1...b3
- 2.Sbc3#
- 1...Sd1
- 2.Bxd3#
- 2.exd3#
- 1...Sh1
- 2.Bxd3#
- 2.exd3#
- 1...Sh3
- 2.Bxd3#
- 2.exd3#
- 1...Sg4
- 2.Bxd3#
- 2.exd3#
- 1...Sc1
- 2.Rf4#
- 2.Re5#
- 1...Se1
- 2.Rf4#
- 2.Re5#
- 1...Sb2
- 2.Rf4#
- 2.Re5#
- 1...Sc5
- 2.Rf4#
- 2.Re5#
- 1...e6
- 2.Sd6#
- 1...e5!
- 1...Sf4+
- 1.Rf6?
- 1...Sf4+
- 2.Rxf4#
- 1...exf6
- 2.Sd6#
- 1...Sd1
- 2.exd3#
- 1...Sh1
- 2.exd3#
- 1...Sh3
- 2.exd3#
- 1...Sg4
- 2.exd3#
- 1...Sc1
- 2.Rf4#
- 1...Se1
- 2.Rf4#
- 1...Sb2
- 2.Rf4#
- 1...Sc5
- 2.Rf4#
- 1...b3
- 2.Sbc3#
- 1...e6
- 2.Sd6#
- 1...Sxe5+!
- 1...Sf4+
- 1.Rf7?
- 1...Sf4+
- 2.Rxf4#
- 1...Sd1
- 2.exd3#
- 1...Sh1
- 2.exd3#
- 1...Sh3
- 2.exd3#
- 1...Sg4
- 2.exd3#
- 1...Sc1
- 2.Rf4#
- 1...Se1
- 2.Rf4#
- 1...Sb2
- 2.Rf4#
- 1...Sc5
- 2.Rf4#
- 1...b3
- 2.Sbc3#
- 1...e6
- 2.Sd6#
- 1...Sxe5+!
- 1...Sf4+
- 1.Rf8?
- 1...Sf4+
- 2.Rxf4#
- 1...Sd1
- 2.exd3#
- 1...Sh1
- 2.exd3#
- 1...Sh3
- 2.exd3#
- 1...Sg4
- 2.exd3#
- 1...Sc1
- 2.Rf4#
- 1...Se1
- 2.Rf4#
- 1...Sb2
- 2.Rf4#
- 1...Sc5
- 2.Rf4#
- 1...b3
- 2.Sbc3#
- 1...e6
- 2.Sd6#
- 1...Sxe5+!
- 1...Sf4+
- 1.Kg5?
- Keys
- 1.Bf4!
- 1...Sxf4+
- 2.Rxf4#
- 1...Se5+
- 2.Rxe5#
- 1...Sd1
- 2.Bxd3#
- 1...Sh1
- 2.Bxd3#
- 1...Sh3
- 2.Bxd3#
- 1...Sg4
- 2.Bxd3#
- 1...Sc1
- 2.Re5#
- 1...Se1
- 2.Re5#
- 1...Sb2
- 2.Re5#
- 1...Sc5
- 2.Re5#
- 1...b3
- 2.Sdc3#
- 1...e5
- 2.Sf6#
- 1...e6
- 2.Sf6#
- 1...Sxf4+
- 1.Bf4!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 10
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- S(a);N_GUARD::P(A),XS(b)
- S(b);N_GUARD::R1(G)
- S(b);CHECK,N_GUARD::R1(G),XS(b)
- S(b);CHECK,OGATE,XB(F)::R1(G),XS(b)
- P(c);N_GUARD::S(D)
- P(e);N_GUARD::S(D)
- Tries
- Try
- K(H);P-FLIGHT
- Vars
- S(a);N_GUARD::P(A),XS(b)
- S(b);N_GUARD::R1(G)
- S(b);N_GUARD::R1(G),XS(b)
- P(c);N_GUARD::S(D)
- P(e);N_GUARD::S(D)
- Refutation
- S(a);CHECK
- Try
- B(F);
- Vars
- S(b);CHECK,N_GUARD::R1(G),XS(b)
- P(c);N_GUARD::S(D)
- P(e);N_GUARD::S(D)
- Refutation
- P(e);
- Try
- B(F);
- Vars
- S(b);CHECK,N_GUARD::R1(G),XS(b)
- P(c);N_GUARD::S(D)
- P(e);N_GUARD::S(D)
- Refutation
- P(e);
- Try
- R(G);
- Vars
- S(b);CHECK,N_GUARD::R1(G),XS(b)
- P(e);N_GUARD,XR(G)::S(D)
- S(a);N_GUARD::P(A),XS(b)
- S(b);N_GUARD::R1(G)
- P(c);N_GUARD::S(D)
- P(e);N_GUARD::S(D)
- Refutation
- S(b);CHECK,XB(F)
- Try
- R(G);
- Vars
- S(b);CHECK,N_GUARD::R1(G),XS(b)
- S(a);N_GUARD::P(A),XS(b)
- S(b);N_GUARD::R1(G)
- P(c);N_GUARD::S(D)
- P(e);N_GUARD::S(D)
- Refutation
- S(b);CHECK,XB(F)
- Try
- R(G);
- Vars
- S(b);CHECK,N_GUARD::R1(G),XS(b)
- S(a);N_GUARD::P(A),XS(b)
- S(b);N_GUARD::R1(G)
- P(c);N_GUARD::S(D)
- P(e);N_GUARD::S(D)
- Refutation
- S(b);CHECK,XB(F)
- Try
- Actual
- B(F);
- Vars
- S(b);CHECK,OGATE,XB(F)::R1(G),XS(b)
- S(b);CHECK,N_GUARD::R1(G),XS(b)
- S(a);N_GUARD::B(B),XS(b)
- S(b);N_GUARD::R1(G)
- P(c);N_GUARD::S(E)
- P(e);N_GUARD::S(E)
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).