MESON Chess Problem Database
Problem Display
PID: 21793 (b1N1Q3/3qB3/p1p3P1/1k3NR1/1p6/1p1P3K/7n/R4B2 w - - 0 1)
Sheppard, Charles William
3rd Prize=, Good Companions (January), 1921
#2
10 + 8
| 3132 | The Good Companion Two-Mover | 1922 |
SOLUTION
- SOUND
- Sets
- 1...Qxf5+
- 2.Rxf5#
- 1...Qxe8
- 2.Sd4#
- 2.Sfd6#
- 1...Qxd3+
- 2.Se3#
- 2.Bxd3#
- 1...Qd4
- 2.Sxd4#
- 2.Sfd6#
- 1...Qd5
- 2.Sd4#
- 1...Qd6
- 2.Sd4#
- 2.Sfxd6#
- 1...Qa7
- 2.Sd4#
- 2.Sfd6#
- 1...Qb7
- 2.Se3#
- 2.Sg3#
- 2.Sd4#
- 2.Sh4#
- 2.Sfd6#
- 2.Sh6#
- 2.Sg7#
- 1...Qc7
- 2.Sd4#
- 2.Sfd6#
- 1...Qxe7
- 2.Sd4#
- 2.Sfd6#
- 2.Sfxe7#
- 1...Qd8
- 2.Sd4#
- 2.Sfd6#
- 1...Sf3
- 2.d4#
- 1...Sg4
- 2.Sd4#
- 2.Sfd6#
- 2.d4#
- 1...Qxf5+
- Tries
- 1.Kxh2?
- threat
- 2.Sd4#
- 2.Sfd6#
- 2.d4#
- 1...Qd6+
- 2.Sfxd6#
- 1...Qc7+
- 2.Sfd6#
- 1...Qxf5
- 2.Rxf5#
- 2.d4#
- 1...Qxd3
- 2.Se3#
- 2.Sfd6#
- 2.Bxd3#
- 1...Qxe7
- 2.Sd4#
- 2.Sfd6#
- 2.Sfxe7#
- 1...a5
- 2.d4#
- 1...c5
- 2.Sd4#
- 1...Qe6
- 2.Sd4#
- 2.Sfd6#
- 1...Qd4
- 2.Sxd4#
- 2.Sfd6#
- 1...Qd5
- 2.Sd4#
- 1...Qxc8!
- threat
- 1.Qxd7?
- threat
- 2.Se3#
- 2.Sg3#
- 2.Sd4#
- 2.Sh4#
- 2.Sfd6#
- 2.Sh6#
- 2.Sg7#
- 1...Sf3
- 2.Sd4#
- 2.Sfd6#
- 2.d4#
- 1...Sg4
- 2.Sd4#
- 2.Sfd6#
- 2.d4#
- 1...a5!
- threat
- 1.Qd8?
- threat
- 2.Ra5#
- 2.Qa5#
- 2.Qb6#
- 1...Qxd3+
- 2.Bxd3#
- 2.Qxd3#
- 1...Qxc8
- 2.Ra5#
- 2.Qa5#
- 1...Qxd8
- 2.Sd4#
- 2.Sfd6#
- 1...a5
- 2.Rxa5#
- 2.Qxa5#
- 2.Qb6#
- 1...c5
- 2.Qb6#
- 1...Qd4
- 2.Sxd4#
- 2.Sfd6#
- 2.Ra5#
- 2.Qa5#
- 1...Qa7
- 2.Sd4#
- 2.Sfd6#
- 2.Sxa7#
- 2.Ra5#
- 2.Qa5#
- 1...Qb7
- 2.Sd4#
- 2.Sfd6#
- 2.Ra5#
- 2.Qa5#
- 1...Qc7
- 2.Sd4#
- 2.Sfd6#
- 1...Qxf5+!
- threat
- 1.Kxh2?
- Keys
- 1.Bd8!
- threat
- 2.Ra5#
- 1...Qxf5+
- 2.Rxf5#
- 1...Qxd3+
- 2.Se3#
- 1...Qh7+
- 2.Sh4#
- 2.Sh6#
- 1...Kc5
- 2.Ra5#
- 1...Qxd8
- 2.Sd4#
- 2.Sfd6#
- 1...a5
- 2.Rxa5#
- 1...Qc7
- 2.Sd4#
- 2.Sfd6#
- 1...c5
- 2.Sa7#
- threat
- 1.Bd8!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 2
- Sets
- Q(g);CHECK,OGATE,P_SPINP(f),P_SPINQ(g),XS(E)::R(F),XQ(g)
- Q(g);N_PINS(E),P_SPINP(f)::S(E)
- S(a);N_GUARD::B(B)+P(C)
- Tries
- Try
- K(D);N_SPINS(E),P-FLIGHT,XS(a)
- Threat
- DUALS(3)
- Vars
- Q(g);CHECK,P_SPINP(f)::R(F)+S(E),DCHECK,XQ(g)
- Q(g);CHECK,P_SPINP(f)::R(F)+S(E),DCHECK
- P(e);::B(B)+P(C)
- P(f);P_SPINQ(g)::S(E)
- Q(g);P_SPINP(f)::S(E)
- Refutation
- Q(g);P_SPINP(f),XS(I)
- Try
- Q(J);N_SPINS(E),P_PINP(f),XQ(g)
- Threat
- DUALS(7)
- Refutation
- P(e);
- Try
- Q(J);
- Threat
- DUALS(3)
- Vars
- P(f);::QAR1(J)
- Refutation
- Q(g);CHECK,P_SPINQ(g),XS(E)
- Try
- Actual
- B(H);
- Threat
- R1(A)
- Vars
- Q(g);CHECK,OGATE,P_SPINP(f),P_SPINQ(g),XS(E)::R(F),XQ(g)
- Q(g);CHECK,N_PINS(E),P_SPINP(f),P_SPINQ(g),XP(C)::R(F)+S(E)
- K(d);P-FLIGHT::R(A)
- P(e);::R1(A),XP(e)
- P(f);P_SPINQ(g),SBLOCK::S(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).