MESON Chess Problem Database
Problem Display
PID: 148569 (8/8/p1K5/k7/4P3/PP1pP3/1n1P4/Q7 w - - 0 1)
Dawson, Thomas Rayner
Pittsburgh Leader, 1913
(First published on Sun Apr 20 1913)
#2
7 + 4
| 15256 | TRD Scrapbook | 2013 |
SOLUTION
- SOUND
- Sets
- 1...Sd1
- 2.Qe5#
- 1...Sa4
- 2.b4#
- 1...Sc4
- 2.Qc3#
- 1...Sd1
- Tries
- 1.Qd1?
- threat
- 2.Qh5#
- 2.b4#
- 1...Sa4
- 2.b4#
- 1...Sc4
- 2.b4#
- 1...Sxd1!
- threat
- 1.Qf1?
- threat
- 2.Qf5#
- 1...Sa4
- 2.b4#
- 1...Sc4!
- threat
- 1.Qg1?
- threat
- 2.Qg5#
- 1...Sa4
- 2.b4#
- 1...Sc4!
- threat
- 1.Qh1?
- threat
- 2.Qh5#
- 1...Sa4
- 2.b4#
- 1...Sc4!
- threat
- 1.e5?
- 1...Sc4
- 2.Qc3#
- 1...Sa4
- 2.b4#
- 1...Sd1!
- 1...Sc4
- 1.Qd1?
- Keys
- 1.Qc1!
- threat
- 2.Qc3#
- 2.Qc5#
- 1...Sd1
- 2.Qc5#
- 1...Sa4
- 2.b4#
- 1...Sc4
- 2.Qc3#
- threat
- 1.Qc1!
FEATURES
- Static
- TYPE = BLOCK_THREAT
- CHANGED MATES = 1
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- S(a);OGATE::QAR(A)
- S(a);SBLOCK::P(D)
- S(a);OGATE::QAB(A)
- Tries
- Try
- Q(A);
- Threat
- DUALS(2)
- Vars
- S(a);::P(D)
- Refutation
- S(a);XQ(A)
- Try
- Q(A);
- Threat
- QAR(A)
- Vars
- S(a);SBLOCK::P(D)
- Refutation
- S(a);
- Try
- Q(A);
- Threat
- QAR(A)
- Vars
- S(a);SBLOCK::P(D)
- Refutation
- S(a);
- Try
- Q(A);
- Threat
- QAB1(A)
- Vars
- S(a);SBLOCK::P(D)
- Refutation
- S(a);
- Try
- P(F);
- Vars
- S(a);OGATE::QAB(A)
- S(a);SBLOCK::P(D)
- Refutation
- S(a);
- Try
- Actual
- Q(A);
- Threat
- DUALS(2)
- Vars
- S(a);::QAR2(A)
- S(a);SBLOCK::P(D)
- S(a);::QAB(A)
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).