MESON Chess Problem Database
Problem Display
PID: 175637 (bB6/Qn1q1nN1/1P3N2/4R3/1p1k4/2p5/5K2/5B2 w - - 0 1)
White, Alain Campbell
Brooklyn Daily Eagle, 1900
#2
8 + 7
| 6490 | yacpdb | 2018 |
SOLUTION
- SOUND
- Sets
- 1...Qh3
- 2.Rd5#
- 1...Qa4
- 2.Sf5#
- 2.Se6#
- 2.Rd5#
- 1...Qg4
- 2.Rd5#
- 1...Qb5
- 2.Sf5#
- 2.Se6#
- 1...Qf5+
- 2.Sxf5#
- 1...Qc6
- 2.Sf5#
- 1...Qe6
- 2.Sxe6#
- 1...Qc8
- 2.Rd5#
- 1...Qe8
- 2.Sf5#
- 2.Rd5#
- 1...Qd5
- 2.Rxd5#
- 1...Qc7
- 2.Rd5#
- 1...Qe7
- 2.Sf5#
- 2.Rd5#
- 1...Qd8
- 2.Sf5#
- 2.Se6#
- 1...Sa5
- 2.b7#
- 1...Sbd8
- 2.b7#
- 1...Sd6
- 2.Rd5#
- 1...c2
- 2.Qa1#
- 1...Qh3
- Tries
- 1.Sxd7?
- threat
- 2.Sf5#
- 2.Se6#
- 1...c2
- 2.Qa1#
- 1...Sc5
- 2.Sf5#
- 1...Sbd6
- 2.Se6#
- 2.b7#
- 1...Sbd8
- 2.Sf5#
- 2.b7#
- 1...Sg5
- 2.Sf5#
- 1...Sfd6
- 2.Se6#
- 1...Sh6
- 2.Se6#
- 1...Sfd8
- 2.Sf5#
- 1...Sxe5!
- threat
- 1.Qa5?
- threat
- 2.Re4#
- 2.Qxb4#
- 1...Qf5+
- 2.Sxf5#
- 1...Sxe5
- 2.Bxe5#
- 2.Qxe5#
- 1...c2
- 2.Qxb4#
- 2.Qa1#
- 1...Qa4
- 2.Sf5#
- 2.Se6#
- 2.Re4#
- 2.Rd5#
- 2.Qd5#
- 1...Qg4
- 2.Rd5#
- 2.Qxb4#
- 2.Qd5#
- 1...Qb5
- 2.Sf5#
- 2.Se6#
- 1...Qc6
- 2.Sf5#
- 1...Qe6
- 2.Sxe6#
- 1...Qc8
- 2.Re4#
- 2.Rd5#
- 2.Qd5#
- 1...Qe8
- 2.Sf5#
- 2.Rd5#
- 2.Qxb4#
- 2.Qd5#
- 1...Qd5
- 2.Sf5#
- 2.Rxd5#
- 2.Qxd5#
- 1...Qd6
- 2.Sf5#
- 2.Re4#
- 1...Qc7
- 2.Sf5#
- 2.Se6#
- 2.Re4#
- 2.Rd5#
- 2.Qd5#
- 1...Qe7
- 2.Sf5#
- 2.Rd5#
- 2.Qd5#
- 1...Sc5
- 2.Qxb4#
- 2.Qxc5#
- 1...Sbd6
- 2.Qc5#
- 1...Sbd8
- 2.Qxb4#
- 2.Qc5#
- 1...Sg5
- 2.Qxb4#
- 1...Sfd6
- 2.Rd5#
- 2.Qd5#
- 1...b3
- 2.Re4#
- 2.Qb4#
- 1...Sxa5!
- threat
- 1.Sxd7?
- Keys
- 1.Rb5!
- 1...Qf5+
- 2.Sxf5#
- 1...Qxb5
- 2.Se6#
- 1...c2
- 2.Qa1#
- 1...Qh3
- 2.Rd5#
- 1...Qg4
- 2.Rd5#
- 1...Qc6
- 2.Sf5#
- 1...Qe6
- 2.Sxe6#
- 1...Qc8
- 2.Rd5#
- 1...Qe8
- 2.Sf5#
- 2.Rd5#
- 1...Qd5
- 2.Rxd5#
- 1...Qd6
- 2.Sf5#
- 1...Qc7
- 2.Sf5#
- 2.Se6#
- 2.Rd5#
- 1...Qe7
- 2.Sf5#
- 2.Rd5#
- 1...Qd8
- 2.Sf5#
- 2.Se6#
- 1...Sa5
- 2.b7#
- 1...Sc5
- 2.Rxb4#
- 1...Sbd6
- 2.b7#
- 1...Sbd8
- 2.b7#
- 1...Se5
- 2.Bxe5#
- 1...Sg5
- 2.Be5#
- 1...Sfd6
- 2.Rd5#
- 1...Sh6
- 2.Be5#
- 1...Sfd8
- 2.Be5#
- 1...Sh8
- 2.Be5#
- 1...b3
- 2.Qa4#
- 1...Qf5+
- 1.Rb5!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 10
- REMOVED MATES = 1
- Sets
- Q(e);N_GUARD::R1(C)
- Q(e);CHECK,N_GUARD::S(G),XQ(e)
- Q(e);N_GUARD::S(G)
- Q(e);N_GUARD::S(G),XQ(e)
- Q(e);N_GUARD::R1(C),XQ(e)
- S(d);OGATE::QAB(F)+P(D)
- S(f);S_CUTQ(e)::R1(C)
- P(a);OGATEB::QAB(F)
- Tries
- Try
- S(E);XQ(e)
- Threat
- DUALS(2)
- Vars
- P(a);OGATEB::QAB(F)
- S(d);::S(G)
- S(f);::S(G)
- Refutation
- S(f);XR(C)
- Try
- Q(F);
- Threat
- DUALS(2)
- Vars
- Q(e);CHECK,N_GUARD::S(G),XQ(e)
- Q(e);N_GUARD::S(G)
- Q(e);N_GUARD::S(G),XQ(e)
- S(d);N_GUARD::QAB1(F)
- S(f);::QAR2(F),XP(b)
- Refutation
- S(d);XQ(F)
- Try
- Actual
- R(C);
- Vars
- Q(e);CHECK,N_GUARD::S(G),XQ(e)
- Q(e);N_GUARD,XR(C)::S(G)
- P(a);OGATEB::QAB(F)
- Q(e);N_GUARD::R1(C)
- Q(e);N_GUARD::S(G)
- Q(e);N_GUARD::S(G),XQ(e)
- Q(e);N_GUARD::R1(C),XQ(e)
- S(d);OGATE::QAB(F)+P(D)
- S(d);SBLOCK::R(C),XP(b)
- S(f);N_GUARD::B(H),XS(f)
- S(f);N_GUARD::B(H)
- S(f);S_CUTQ(e)::R1(C)
- P(b);OGATEB::QAR(F)
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).