MESON Chess Problem Database
Problem Display
PID: 21321 (7Q/3p1pn1/1R2q3/B7/4P3/3Pk3/2p1NNP1/2b1K3 w - - 0 1)
Wainwright, Joseph CJ
Good Companions (December), 1918
#2
9 + 7
| 3132 | The Good Companion Two-Mover | 1922 |
SOLUTION
- SOUND
- Sets
- 1...Qa2
- 2.Qh3#
- 2.Qh6#
- 1...Qb3
- 2.Qh3#
- 2.Qh6#
- 1...Qh3
- 2.Qxh3#
- 1...Qc4
- 2.Qh3#
- 2.Qh6#
- 1...Qd5
- 2.Qh3#
- 1...Qxb6
- 2.Bxb6#
- 2.Qh3#
- 1...Qc6
- 2.Qh3#
- 1...Qh6
- 2.Qxh6#
- 1...Qe7
- 2.Qh3#
- 1...Qe8
- 2.Qh3#
- 2.Qh6#
- 1...Bb2
- 2.Bd2#
- 1...Bd2+
- 2.Bxd2#
- 1...Ba3
- 2.Bd2#
- 1...Sh5
- 2.Qd4#
- 1...Se8
- 2.Qd4#
- 1...f5
- 2.Qh3#
- 1...f6
- 2.Qh6#
- 1...Qa2
- Tries
- 1.Rxe6?
- threat
- 2.Bb6#
- 2.Qh3#
- 2.Qh6#
- 1...Bd2+
- 2.Bxd2#
- 1...Sxe6
- 2.Qh3#
- 1...Bb2
- 2.Bd2#
- 2.Qh3#
- 2.Qh6#
- 1...Ba3
- 2.Bd2#
- 2.Qh3#
- 2.Qh6#
- 1...Sh5
- 2.Bb6#
- 2.Qd4#
- 1...d5
- 2.Qh3#
- 2.Qh6#
- 1...f5
- 2.Bb6#
- 2.Qh3#
- 1...Sf5!
- threat
- 1.Rxe6?
- Keys
- 1.Rb3!
- 1...Bd2+
- 2.Bxd2#
- 1...Qxb3
- 2.Qh3#
- 2.Qh6#
- 1...Qxe4
- 2.dxe4#
- 1...Qf5
- 2.d4#
- 1...Qh3
- 2.Bb6#
- 2.Qxh3#
- 2.d4#
- 1...Qc4
- 2.Sg4#
- 2.Qh3#
- 2.Qh6#
- 2.dxc4#
- 1...Qg4
- 2.Sxg4#
- 2.Bb6#
- 2.d4#
- 1...Qd5
- 2.Sg4#
- 2.Qh3#
- 1...Qe5
- 2.Sg4#
- 2.d4#
- 1...Qa6
- 2.Sg4#
- 2.Qh3#
- 1...Qb6
- 2.Sg4#
- 2.Bxb6#
- 2.Qh3#
- 1...Qc6
- 2.Sg4#
- 2.Qh3#
- 1...Qd6
- 2.Sg4#
- 2.d4#
- 1...Qf6
- 2.Sg4#
- 2.d4#
- 1...Qg6
- 2.d4#
- 1...Qh6
- 2.Sg4#
- 2.Qxh6#
- 2.d4#
- 1...Qe7
- 2.Sg4#
- 2.Qh3#
- 2.d4#
- 1...Qe8
- 2.Sg4#
- 2.Bb6#
- 2.Qh3#
- 2.Qh6#
- 2.d4#
- 1...Bb2
- 2.Bd2#
- 1...Ba3
- 2.Bd2#
- 1...Sf5
- 2.Sg4#
- 1...Sh5
- 2.Qd4#
- 1...Se8
- 2.Qd4#
- 1...d5
- 2.d4#
- 1...d6
- 2.Bb6#
- 1...f5
- 2.Qh3#
- 1...f6
- 2.Qh6#
- 1...Bd2+
- 1.Rb3!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 6
- REMOVED MATES = 5
- Sets
- Q(d);N_GUARD::QAR(I),XQ(d)
- Q(d);N_GUARD::QAR(I)
- Q(d);N_GUARD::QAB(I),XQ(d)
- B(a);N_GUARD::B(G)
- B(a);CHECK,N_GUARD::B(G),XB(a)
- S(g);OGATE::QAB1(I)
- P(f);S_CUTQ(d)::QAR(I)
- P(f);S_CUTQ(d)::QAB(I)
- Tries
- Try
- R(H);XQ(d)
- Threat
- DUALS(3)
- Vars
- B(a);CHECK,N_GUARD::B(G),XB(a)
- S(g);XR(H)::QAR(I)
- Refutation
- S(g);
- Try
- Actual
- R(H);
- Vars
- B(a);CHECK,N_GUARD::B(G),XB(a)
- Q(d);OGATE,XP(F)::R(H)+P(E),XQ(d)
- Q(d);N_GUARD::R(H)+P(E)
- B(a);N_GUARD::B(G)
- S(g);S_CUTQ(d)::S(C)
- S(g);OGATE::QAB1(I)
- P(e);S_CUTQ(d)::R(H)+P(E)
- P(e);S_CUTQ(d)::B(G)
- P(f);S_CUTQ(d)::QAR(I)
- P(f);S_CUTQ(d)::QAB(I)
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).