MESON Chess Problem Database
Problem Display
PID: 11458 (3N1b2/4RPp1/2N2pp1/1n1p1kP1/2b5/1pBpPBR1/1K1P2P1/8 w - - 0 1)
Froberg, Johan Hilding Laurentius
Arbejder Magasinet, 1939
#2
12 + 10
SOLUTION
- SOUND
- Sets
- 1...Bxe7
- 2.Sxe7#
- 1...Sa3
- 2.Sd4#
- 1...Sxc3
- 2.Sd4#
- 1...Sd4
- 2.Sxd4#
- 1...Sd6
- 2.Sd4#
- 1...Sa7
- 2.Sd4#
- 1...Sc7
- 2.Sd4#
- 1...d4
- 2.Be4#
- 1...fxg5
- 2.Bg4#
- 1...Bxe7
- Tries
- 1.Ka1?
- 1...Bxe7
- 2.Sxe7#
- 1...Sxc3
- 2.Sd4#
- 1...fxg5
- 2.Bg4#
- 1...Sa3
- 2.Sd4#
- 1...Sd4
- 2.Sxd4#
- 1...Sd6
- 2.Sd4#
- 1...Sa7
- 2.Sd4#
- 1...Sc7
- 2.Sd4#
- 1...d4
- 2.Be4#
- 1...b2+!
- 1...Bxe7
- 1.Kc1?
- 1...Bxe7
- 2.Sxe7#
- 1...Sxc3
- 2.Sd4#
- 1...fxg5
- 2.Bg4#
- 1...Sa3
- 2.Sd4#
- 1...Sd4
- 2.Sxd4#
- 1...Sd6
- 2.Sd4#
- 1...Sa7
- 2.Sd4#
- 1...Sc7
- 2.Sd4#
- 1...d4
- 2.Be4#
- 1...b2+!
- 1...Bxe7
- 1.Sb7?
- 1...Sxc3
- 2.Sd4#
- 2.Sd6#
- 1...fxg5
- 2.Bg4#
- 1...Sa3
- 2.Sd4#
- 2.Sd6#
- 1...Sd4
- 2.Sxd4#
- 2.Sd6#
- 1...Sd6
- 2.Sd4#
- 2.Sxd6#
- 1...Sa7
- 2.Sd4#
- 2.Sd6#
- 1...Sc7
- 2.Sd4#
- 2.Sd6#
- 1...d4
- 2.Be4#
- 1...Bxe7!
- 1...Sxc3
- 1.Bxf6?
- threat
- 2.Bg4#
- 2.Re5#
- 1...Bxe7
- 2.Sxe7#
- 1...gxf6!
- threat
- 1.Bxd5?
- threat
- 2.Be4#
- 1...Bxe7
- 2.Sxe7#
- 1...Sxc3
- 2.Sd4#
- 1...Sd6
- 2.Sd4#
- 1...Bxd5!
- threat
- 1.Rg4?
- 1...Bxe7
- 2.Sxe7#
- 1...Sxc3
- 2.Sd4#
- 1...Sa3
- 2.Sd4#
- 1...Sd4
- 2.Sxd4#
- 1...Sd6
- 2.Sd4#
- 1...Sa7
- 2.Sd4#
- 1...Sc7
- 2.Sd4#
- 1...d4
- 2.e4#
- 1...fxg5!
- 1...Bxe7
- 1.e4+?
- 1...Kf4
- 2.Rg4#
- 1...dxe4!
- 1...Kf4
- 1.Ka1?
- Keys
- 1.Se6!
- 1...Bxe7
- 2.Sxg7#
- 1...Sxc3
- 2.Sed4#
- 1...fxg5
- 2.Rxg5#
- 1...Sa3
- 2.Sed4#
- 1...Sd4
- 2.Sexd4#
- 1...Sd6
- 2.Sed4#
- 1...Sa7
- 2.Sed4#
- 1...Sc7
- 2.Sed4#
- 1...d4
- 2.e4#
- 1...Bxe7
- 1.Se6!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 3
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- B(j);XR(J)::S(I),XB(j)
- S(d);N_GUARD::S(I)
- S(d);N_GUARD,XB(D)::S(I)
- S(d);N_GUARD::S(I),XS(d)
- P(e);N_GUARD::B(F)
- P(g);SBLOCK,XP(H)::B(F)
- Tries
- Try
- K(A);S_FLIGHT
- Vars
- B(j);XR(J)::S(I),XB(j)
- S(d);N_GUARD,XB(D)::S(I)
- P(g);SBLOCK,XP(H)::B(F)
- S(d);N_GUARD::S(I)
- S(d);N_GUARD::S(I),XS(d)
- P(e);N_GUARD::B(F)
- Refutation
- P(a);CHECK
- Try
- K(A);S_FLIGHT
- Vars
- B(j);XR(J)::S(I),XB(j)
- S(d);N_GUARD,XB(D)::S(I)
- P(g);SBLOCK,XP(H)::B(F)
- S(d);N_GUARD::S(I)
- S(d);N_GUARD::S(I),XS(d)
- P(e);N_GUARD::B(F)
- Refutation
- P(a);CHECK
- Try
- S(L);
- Vars
- P(g);SBLOCK,XP(H)::B(F)
- P(e);N_GUARD::B(F)
- Refutation
- B(j);XR(J)
- Try
- B(D);XP(g)
- Threat
- DUALS(2)
- Vars
- B(j);XR(J)::S(I),XB(j)
- Refutation
- P(i);XB(D)
- Try
- B(F);XP(e)
- Threat
- B(F)
- Vars
- B(j);XR(J)::S(I),XB(j)
- S(d);N_GUARD,XB(D)::S(I)
- S(d);N_GUARD::S(I)
- Refutation
- B(c);XB(F)
- Try
- R(G);
- Vars
- B(j);XR(J)::S(I),XB(j)
- S(d);N_GUARD,XB(D)::S(I)
- S(d);N_GUARD::S(I)
- S(d);N_GUARD::S(I),XS(d)
- P(e);N_GUARD::P(E)
- Refutation
- P(g);XP(H)
- Try
- P(E);CHECK
- Vars
- K(f);P-FLIGHT::R1(G)
- Refutation
- P(e);XP(E)
- Try
- Actual
- S(L);
- Vars
- B(j);N_GUARD,XR(J)::S(L),XP(i)
- S(d);N_GUARD,XB(D)::S(L)
- P(g);OGATE,XP(H)::R1(G),XP(g)
- S(d);N_GUARD::S(L)
- S(d);N_GUARD::S(L),XS(d)
- P(e);N_GUARD::P(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).