MESON Chess Problem Database
Problem Display
PID: 214742 (4b3/2q5/8/3R4/1pknP3/1N1p3Q/PK1P1b2/8 w - - 0 1)
Bell, Charles S
Detroit Free Press, 1877
#2
7 + 7
| 6490 | yacpdb | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Qh2
- 2.Sa5#
- 2.Rc5#
- 1...Qg3
- 2.Sa5#
- 2.Rc5#
- 1...Qf4
- 2.Sa5#
- 2.Rc5#
- 1...Qa5
- 2.Sxa5#
- 1...Qe5
- 2.Sa5#
- 1...Qd6
- 2.Sa5#
- 1...Qb8
- 2.Sa5#
- 2.Rc5#
- 1...Qd8
- 2.Rc5#
- 1...Qc5
- 2.Rxc5#
- 1...Qc6
- 2.Sa5#
- 1...Qb7
- 2.Sa5#
- 2.Rc5#
- 1...Qd7
- 2.Sa5#
- 2.Rc5#
- 1...Qe7
- 2.Sa5#
- 1...Qf7
- 2.Sa5#
- 2.Rc5#
- 1...Qg7
- 2.Sa5#
- 2.Rc5#
- 1...Qh7
- 2.Sa5#
- 2.Rc5#
- 1...Qc8
- 2.Sa5#
- 1...Bc6
- 2.Rc5#
- 1...Sc2
- 2.Qxd3#
- 1...Se2
- 2.Qxd3#
- 1...Sxb3
- 2.Qxd3#
- 2.axb3#
- 1...Sb5
- 2.Qxd3#
- 1...Sf5
- 2.Qxd3#
- 1...Sc6
- 2.Qxd3#
- 1...Se6
- 2.Qxd3#
- 1...Qh2
- Tries
- 1.Qe6?
- threat
- 2.Rc5#
- 1...Sxb3
- 2.axb3#
- 1...Qc5
- 2.Rxc5#
- 1...Sxe6!
- threat
- 1.Qe6?
- Keys
- 1.Qc8!
- threat
- 2.Sa5#
- 1...Sxb3
- 2.axb3#
- 1...Qc5
- 2.Rxc5#
- 2.Qxc5#
- 1...Bc6
- 2.Rc5#
- 1...Sc6
- 2.Qa6#
- threat
- 1.Qc8!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 1
- REMOVED MATES = 13
- Sets
- Q(f);N_GUARD::S(D),XQ(f)
- Q(f);N_GUARD::S(D)
- Q(f);N_GUARD::R1(G)
- Q(f);N_GUARD::R1(G),XQ(f)
- B(g);S_CUTQ(f)::R1(G)
- S(e);::QAB1(E),XP(b)
- Tries
- Try
- Q(E);
- Threat
- QAB(E)+R(G),DCHECK
- Vars
- S(e);OGATE,XS(D)::P(A),XS(e)
- Q(f);::QAB(E)+R(G),DCHECK,XQ(f)
- Refutation
- S(e);XQ(E)
- Try
- Actual
- Q(E);P_PINQ(f)
- Threat
- S(D)
- Vars
- S(e);OGATE,XS(D)::P(A),XS(e)
- B(g);N_SPINQ(f),S_CUTQ(f)::R1(G)
- S(e);N_GUARD,N_SPINQ(f),S_CUTB(g)::QAB(E)
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).