MESON Chess Problem Database
Problem Display
PID: 83533 (5Q2/4p1K1/1n3n1B/8/6p1/1B3k2/4R2P/2N5 w - - 0 1)
Ellerman, Arnoldo
Good Companions, 1920
#2
7 + 5
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Sa4
- 2.Bd5#
- 1...Sd5
- 2.Bxd5#
- 1...Sd7
- 2.Bd5#
- 1...Sa8
- 2.Bd5#
- 1...Sc8
- 2.Bd5#
- 1...e5
- 2.Qxf6#
- 1...e6
- 2.Qxf6#
- 1...Sa4
- Tries
- 1.Be6?
- 1...Sc4
- 2.Bd5#
- 1...Sa4
- 2.Bd5#
- 1...Sd5
- 2.Bxd5#
- 1...Sd7
- 2.Bd5#
- 1...Sa8
- 2.Bd5#
- 1...Sc8
- 2.Bd5#
- 1...g3!
- 1...Sc4
- 1.Bg8?
- 1...Sc4
- 2.Bd5#
- 1...Sa4
- 2.Bd5#
- 1...Sd5
- 2.Bxd5#
- 1...Sd7
- 2.Bd5#
- 1...Sa8
- 2.Bd5#
- 1...Sc8
- 2.Bd5#
- 1...e5
- 2.Qa3#
- 2.Qxf6#
- 1...e6
- 2.Qa3#
- 2.Qxf6#
- 1...g3!
- 1...Sc4
- 1.Be6?
- Keys
- 1.Bf7!
- 1...Sh5+
- 2.Bxh5#
- 1...Se8+
- 2.Bxe8#
- 1...g3
- 2.Bh5#
- 1...Sc4
- 2.Bd5#
- 1...Sa4
- 2.Bd5#
- 1...Sbd5
- 2.Bxd5#
- 1...Sbd7
- 2.Bd5#
- 1...Sa8
- 2.Bd5#
- 1...Sc8
- 2.Bd5#
- 1...Se4
- 2.Bd5#
- 1...Sfd5
- 2.Bxd5#
- 1...Sfd7
- 2.Bd5#
- 1...Sh7
- 2.Bd5#
- 1...Sg8
- 2.Bd5#
- 2.Bxg8#
- 1...e5
- 2.Qa3#
- 1...e6
- 2.Qa3#
- 1...Sh5+
- 1.Bf7!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 2
- ADDED MATES = 8
- REMOVED MATES = 0
- Sets
- S(c);N_GUARD::B(D)
- S(c);N_GUARD::B(D),XS(c)
- P(e);N_GUARD::QAR(G),XS(d)
- Tries
- Try
- B(D);
- Vars
- S(c);N_GUARD::B(D)
- S(c);N_GUARD::B(D),XS(c)
- Refutation
- P(b);
- Try
- B(D);
- Vars
- S(c);N_GUARD::B(D)
- S(c);N_GUARD::B(D),XS(c)
- Refutation
- P(b);
- Try
- Actual
- B(D);N_PINS(d)
- Vars
- S(d);CHECK,OGATEB::QAR(G)+B(D),XS(d)
- P(b);OGATEB::B(D)
- S(c);N_GUARD::B(D)
- S(c);N_GUARD::B(D),XS(c)
- S(d);S_CUTS(c)::QAR(G)+B(D)
- S(d);::QAR(G)+B(D),DCHECK,XS(d)
- S(d);::QAR(G)+B(D),DCHECK
- P(e);OGATE::QAR(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).