MESON Chess Problem Database
Problem Display
PID: 249763 (1bBB4/8/8/2P4R/R3pk2/8/4PP1n/7K w - - 0 1)
Hannelius, Jan Ingvar
Stella Polaris, 1969
#2
8 + 4
| 5454 | Near Snap | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Be5
- 2.Bg5#
- 1...Ba7
- 2.Bc7#
- 1...Bc7
- 2.Bxc7#
- 1...Sf3
- 2.e3#
- 1...Sg4
- 2.Rf5#
- 1...Be5
- Tries
- 1.Kg2?
- threat
- 2.e3#
- 1...Sg4
- 2.Rf5#
- 1...Sf1!
- threat
- 1.Kxh2?
- 1...Be5
- 2.Bg5#
- 2.Rh4#
- 1...Ba7
- 2.Bc7#
- 1...Bc7
- 2.Bxc7#
- 1...Bd6!
- 1...Be5
- 1.Ba5?
- threat
- 2.Bd2#
- 1...Sf3
- 2.e3#
- 1...Sg4
- 2.Rf5#
- 1...Sf1!
- threat
- 1.Ra6?
- threat
- 2.Rf6#
- 1...e3
- 2.Ra4#
- 1...Be5
- 2.Bg5#
- 1...Sg4
- 2.Rf5#
- 1...Bd6!
- threat
- 1.Rd5?
- threat
- 2.Bg5#
- 1...Sf3
- 2.e3#
- 1...Be5!
- threat
- 1.Kg2?
- Keys
- 1.Ra7!
- threat
- 2.Rf7#
- 1...Bxa7
- 2.Bc7#
- 1...e3
- 2.Ra4#
- 1...Be5
- 2.Bg5#
- 1...Bc7
- 2.Bxc7#
- 1...Sg4
- 2.Rf5#
- threat
- 1.Ra7!
Anticipated by 45416(1968)
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 1
- Sets
- B(d);SBLOCK::B(H)
- B(d);N_GUARD::B(H)
- B(d);N_GUARD::B(H),XB(d)
- S(a);SBLOCK::P(B)
- S(a);SBLOCK::R1(F)
- Tries
- Try
- K(A);S_FLIGHT
- Threat
- P(B)
- Vars
- S(a);SBLOCK::R1(F)
- Refutation
- S(a);
- Try
- K(A);P-FLIGHT,XS(a)
- Vars
- B(d);N_GUARD::B(H)
- B(d);N_GUARD::B(H),XB(d)
- Refutation
- B(d);
- Try
- B(H);
- Threat
- B(H)
- Vars
- S(a);SBLOCK::P(B)
- S(a);SBLOCK::R1(F)
- Refutation
- S(a);
- Try
- R(D);N_PINP(b)
- Threat
- R(D)
- Vars
- P(b);OGATEB::R(D)
- B(d);SBLOCK::B(H)
- S(a);SBLOCK::R1(F)
- Refutation
- B(d);
- Try
- R(F);
- Threat
- B(H)
- Vars
- S(a);SBLOCK::P(B)
- Refutation
- B(d);
- Try
- Actual
- R(D);N_PINP(b)
- Threat
- R(D)
- Vars
- B(d);N_GUARD,XR(D)::B(H)
- P(b);OGATEB::R(D)
- B(d);SBLOCK::B(H)
- B(d);N_GUARD::B(H),XB(d)
- S(a);SBLOCK::R1(F)
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).