MESON Chess Problem Database
Problem Display
PID: 193896 (8/n1R1R3/8/3k2n1/1P1b4/3PP1B1/2K3b1/3Q4 w - - 0 1)
Rothstein, Louis
Pittsburgh Gazette-Times, 1916
#2
8 + 5
| 6490 | yacpdb | 2019 |
SOLUTION
- SOUND
- Sets
- 1...Ba1
- 2.Rc5#
- 1...Bb2
- 2.Rc5#
- 1...Bc3
- 2.Rc5#
- 1...Bc5
- 2.Rxc5#
- 1...Bf6
- 2.Rc5#
- 1...Bg7
- 2.Rc5#
- 1...Bh8
- 2.Rc5#
- 1...Sf3
- 2.e4#
- 1...Se6
- 2.Red7#
- 1...Sc6
- 2.Rcd7#
- 1...Ba1
- Tries
- 1.Qf3+?
- 1...Sxf3
- 2.e4#
- 1...Se4
- 2.Qf7#
- 2.dxe4#
- 1...Bxf3!
- 1...Sxf3
- 1.Qf3+?
- Keys
- 1.Qa1!
- threat
- 2.Qxd4#
- 2.Qa2#
- 1...Bxa1
- 2.Rc5#
- 1...Bxe3
- 2.Qe5#
- 1...Be5
- 2.Qxe5#
- 1...Bb2
- 2.Rc5#
- 2.Qa2#
- 1...Bc3
- 2.Rc5#
- 2.Qa2#
- 1...Bc5
- 2.Rxc5#
- 2.Qe5#
- 2.Qa2#
- 1...Bb6
- 2.Qe5#
- 2.Qa2#
- 1...Bf6
- 2.Rc5#
- 2.Qa2#
- 1...Bg7
- 2.Rc5#
- 2.Qa2#
- 1...Bh8
- 2.Rc5#
- 2.Qa2#
- 1...Sf3
- 2.Qa2#
- 2.e4#
- 1...Se6
- 2.Red7#
- 2.Qa2#
- 1...Sb5
- 2.Qa2#
- 2.Qa8#
- 1...Sc6
- 2.Rcd7#
- 2.Qa2#
- threat
- 1.Qa1!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 9
- Sets
- B(b);N_GUARD::R1(G)
- B(b);N_GUARD::R1(G),XB(b)
- S(d);N_GUARD,S_CUTB(a)::P(D)
- S(d);SBLOCK::R(H)
- S(e);SBLOCK::R(G)
- Tries
- Try
- Q(A);CHECK
- Vars
- S(d);N_GUARD,XQ(A)::P(D)
- Refutation
- B(a);XQ(A)
- Try
- Actual
- Q(A);
- Threat
- DUALS(2)
- Vars
- B(b);N_GUARD,XQ(A)::R1(G)
- B(b);OGATE,XP(D)::QAR1(A)
- B(b);OGATE::QAR1(A),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).