MESON Chess Problem Database
Problem Display
PID: 90152 (2B5/R7/2pk3K/1b6/3P1n2/2N5/8/3Q4 w - - 0 1)
Vaughan, Colin V
Die Schwalbe, 1949
#2
6 + 4
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Sd5
- 2.Se4#
- 1...Se6
- 2.Rd7#
- 1...Sd5
- Tries
- 1.Qb3?
- threat
- 2.Se4#
- 2.Rd7#
- 1...Bd3
- 2.Rd7#
- 2.Qb8#
- 1...Bc4
- 2.Qb8#
- 1...Sd5
- 2.Se4#
- 1...c5!
- threat
- 1.Qg4?
- threat
- 2.Rd7#
- 2.Qd7#
- 2.Qxf4#
- 1...Se2
- 2.Rd7#
- 2.Qe6#
- 2.Qd7#
- 2.Qg6#
- 1...Sg2
- 2.Rd7#
- 2.Qe6#
- 2.Qd7#
- 2.Qg6#
- 1...Sd3
- 2.Rd7#
- 2.Qe6#
- 2.Qd7#
- 2.Qg6#
- 1...Sh3
- 2.Rd7#
- 2.Qe6#
- 2.Qd7#
- 2.Qg6#
- 1...Sd5
- 2.Se4#
- 2.Rd7#
- 2.Qe6#
- 2.Qd7#
- 1...Sh5
- 2.Rd7#
- 2.Qe6#
- 2.Qd7#
- 1...Se6
- 2.Rd7#
- 2.Qxe6#
- 1...Sg6
- 2.Rd7#
- 2.Qe6#
- 2.Qd7#
- 2.Qxg6#
- 1...c5!
- threat
- 1.Qh5?
- threat
- 2.Se4#
- 2.Qc5#
- 2.Qe5#
- 1...c5
- 2.Qxc5#
- 1...Bd3
- 2.Qc5#
- 2.Qe5#
- 1...Sd3
- 2.Se4#
- 2.Qg6#
- 1...Sd5
- 2.Se4#
- 2.Qe5#
- 1...Se6
- 2.Se4#
- 2.Rd7#
- 2.Qe5#
- 1...Sg6
- 2.Se4#
- 2.Qxg6#
- 2.Qc5#
- 1...Sxh5!
- threat
- 1.Qb3?
- Keys
- 1.Qf3!
- threat
- 2.Qxf4#
- 1...Se2
- 2.Qf6#
- 2.Qf8#
- 1...Sg2
- 2.Qf6#
- 2.Qf8#
- 1...Sd3
- 2.Qf6#
- 2.Qf8#
- 1...Sh3
- 2.Qf6#
- 2.Qf8#
- 1...Sd5
- 2.Se4#
- 1...Sh5
- 2.Qf8#
- 1...Se6
- 2.Rd7#
- 1...Sg6
- 2.Qf6#
- 1...c5
- 2.Sxb5#
- threat
- 1.Qf3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 0
- Sets
- S(a);SBLOCK::S(B)
- S(a);SBLOCK::R1(E)
- Tries
- Try
- Q(A);
- Threat
- DUALS(2)
- Vars
- B(b);OGATE::QAB(A)
- S(a);::S(B)
- Refutation
- P(c);
- Try
- Q(A);
- Threat
- DUALS(3)
- Refutation
- P(c);
- Try
- Q(A);
- Threat
- DUALS(3)
- Vars
- P(c);::QAB1(A),XP(c)
- Refutation
- S(a);XQ(A)
- Try
- Actual
- Q(A);
- Threat
- QAB(A),XS(a)
- Vars
- S(a);SBLOCK::S(B)
- S(a);OGATE::QAB(A)
- S(a);SBLOCK::R1(E)
- S(a);OGATE::QAR2(A)
- P(c);N_GUARD::S(B),XB(b)
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).