MESON Chess Problem Database
Problem Display
PID: 244832 (4k1n1/3pP1K1/5Pp1/3BQ2N/1R6/3RB3/b2Nq2b/1r3r2 w - - 0 1)
Froberg, Johan Hilding Laurentius
Thema Danicum, 1980
#2
10 + 9
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Ra1
- 2.Rb8#
- 1...Rbd1
- 2.Rb8#
- 1...Rbe1
- 2.Rb8#
- 1...Rb3
- 2.Bf7#
- 1...Rc1
- 2.f7#
- 1...Rfd1
- 2.f7#
- 1...Rfe1
- 2.f7#
- 1...Rg1
- 2.f7#
- 1...Rh1
- 2.f7#
- 1...Rf4
- 2.Qb8#
- 1...Bb3
- 2.Rb8#
- 1...Bg1
- 2.Qb8#
- 1...Bf4
- 2.f7#
- 1...Sxe7
- 2.Qxe7#
- 1...d6
- 2.Bc6#
- 1...Ra1
- Tries
- 1.Sf4?
- threat
- 2.Qb8#
- 2.f7#
- 1...Rxb4
- 2.f7#
- 1...Rxf4
- 2.Qb8#
- 1...Bxd5
- 2.Qb8#
- 1...Bxf4
- 2.f7#
- 1...Sxe7
- 2.Qxe7#
- 1...d6
- 2.Bc6#
- 1...Rbc1
- 2.f7#
- 1...Rfc1
- 2.f7#
- 1...Sh6
- 2.Qb8#
- 1...Sxf6!
- threat
- 1.Rdb3?
- threat
- 2.Bf7#
- 2.Rb8#
- 1...Rxb3
- 2.Bf7#
- 1...Rxf6
- 2.Rb8#
- 1...Bxb3
- 2.Rb8#
- 1...Bxe5
- 2.Bf7#
- 1...Sxe7
- 2.Rb8#
- 2.Qxe7#
- 1...d6
- 2.Bc6#
- 1...Qb5
- 2.Bf7#
- 1...Qa6
- 2.Bf7#
- 1...Rbc1
- 2.Bf7#
- 1...Rfc1
- 2.Bf7#
- 2.f7#
- 1...Sh6
- 2.Rb8#
- 1...Qc4!
- threat
- 1.Rc4?
- threat
- 2.Bf7#
- 2.Rc8#
- 1...Rxf6
- 2.Rc8#
- 1...Sxe7
- 2.Rc8#
- 2.Qxe7#
- 1...d6
- 2.Bc6#
- 1...Rbc1
- 2.Bf7#
- 1...Rb8
- 2.Bf7#
- 1...Rfc1
- 2.Bf7#
- 2.f7#
- 1...Sh6
- 2.Rc8#
- 1...Bxc4!
- threat
- 1.Sf4?
- Keys
- 1.Sb3!
- threat
- 2.Bf7#
- 2.Rb8#
- 1...Rxb3
- 2.Bf7#
- 1...Rxf6
- 2.Rb8#
- 1...Bxb3
- 2.Rb8#
- 1...Bxe5
- 2.Bf7#
- 1...Sxe7
- 2.Rb8#
- 2.Qxe7#
- 1...d6
- 2.Bc6#
- 1...Qc2
- 2.Bf7#
- 1...Rbc1
- 2.Bf7#
- 1...Rfc1
- 2.Bf7#
- 2.f7#
- 1...Sh6
- 2.Rb8#
- threat
- 1.Sb3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 5
- REMOVED MATES = 12
- Sets
- R(a);N_GUARD::R(D)
- R(a);S_CUTB(c)::B(E)
- R(b);N_GUARD::P(H)
- R(b);S_CUTB(e)::QAR(F)
- B(c);S_CUTR(a)::R(D)
- B(e);N_GUARD::QAR(F)
- B(e);S_CUTR(b)::P(H)
- S(i);OGATE,P_SPINS(i),XP(I)::QAR1(F),XS(i)
- P(g);OGATEB::B(E)
- Tries
- Try
- S(G);
- Threat
- DUALS(2)
- Vars
- R(a);XR(D)::P(H)
- R(b);XS(G)::QAR(F)
- B(c);XB(E)::QAR(F)
- B(e);XS(G)::P(H)
- S(i);OGATE,P_SPINS(i),XP(I)::QAR1(F),XS(i)
- P(g);OGATEB::B(E)
- R(a);::P(H)
- R(b);::P(H)
- S(i);::QAR(F)
- Refutation
- S(i);XP(H)
- Try
- R(B);
- Threat
- DUALS(2)
- Vars
- R(a);XR(B)::B(E)
- R(b);XP(H)::R(D)
- B(c);XR(B)::R(D)
- B(e);P_PINP(H),XQ(F)::B(E)
- P(g);OGATEB::B(E)
- Q(d);::B(E)
- R(a);::B(E)
- S(i);::R(D)
- Refutation
- Q(d);
- Try
- R(D);
- Threat
- DUALS(2)
- Vars
- R(b);XP(H)::R(D)
- P(g);OGATEB::B(E)
- R(a);::B(E)
- S(i);::R(D)
- Refutation
- B(c);XR(D)
- Try
- Actual
- S(A);
- Threat
- DUALS(2)
- Vars
- R(a);XS(A)::B(E)
- R(b);XP(H)::R(D)
- B(c);XS(A)::R(D)
- B(e);P_PINP(H),XQ(F)::B(E)
- P(g);OGATEB::B(E)
- Q(d);::B(E)
- R(a);::B(E)
- S(i);::R(D)
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).