MESON Chess Problem Database
Problem Display
PID: 21073 (1b6/7n/1P2K1p1/B1Q5/r4k1P/1p1P4/1Pb1RP1N/2q4n w - - 0 1)
le Mieux, Lucius Augustus
Good Companions (December), 1916
#2
10 + 9
| 3132 | The Good Companion Two-Mover | 1922 |
| 6479 | Problemschach (Sidler) | 1968 |
SOLUTION
- SOUND
- Sets
- 1...Qxb2
- 2.Bd2#
- 2.Qe3#
- 1...Qd2
- 2.Bxd2#
- 1...Qe3+
- 2.Qxe3#
- 1...Qa1
- 2.Bd2#
- 2.Qe3#
- 1...Qb1
- 2.Bd2#
- 2.Qe3#
- 1...Qd1
- 2.Qe3#
- 1...Qe1
- 2.Qe3#
- 1...Qf1
- 2.Bd2#
- 2.Qe3#
- 1...Qg1
- 2.Bd2#
- 2.Qe3#
- 1...Ra1
- 2.Re4#
- 2.Qb4#
- 2.Qd4#
- 2.Qc4#
- 1...Ra2
- 2.Re4#
- 2.Qb4#
- 2.Qd4#
- 2.Qc4#
- 1...Ra3
- 2.Re4#
- 2.Qb4#
- 2.Qd4#
- 2.Qc4#
- 1...Rb4
- 2.Qxb4#
- 1...Rc4
- 2.Qxc4#
- 1...Rd4
- 2.Qxd4#
- 1...Re4+
- 2.Rxe4#
- 1...Rxa5
- 2.Re4#
- 2.Qb4#
- 2.Qd4#
- 2.Qc4#
- 1...Bb1
- 2.Qxc1#
- 1...Bd1
- 2.Qxc1#
- 1...Bxd3
- 2.Qxc1#
- 1...Be5
- 2.Qxe5#
- 1...Bd6
- 2.Qxd6#
- 1...Ba7
- 2.Qd6#
- 2.Qe5#
- 2.Qc7#
- 1...Bc7
- 2.Qxc7#
- 1...Sxf2
- 2.Qxf2#
- 1...Sg5+
- 2.Qxg5#
- 1...Sf6
- 2.Qg5#
- 1...Sf8+
- 2.Qxf8#
- 1...g5
- 2.Qf5#
- 1...Qxb2
- Tries
- 1.Bb4?
- threat
- 2.Re4#
- 2.Qd4#
- 2.Qc4#
- 1...Qe3+
- 2.Qxe3#
- 1...Sg5+
- 2.Qxg5#
- 1...Sf8+
- 2.Qxf8#
- 1...Qxb2
- 2.Bd2#
- 2.Re4#
- 2.Qe3#
- 1...Rxb4
- 2.Qxb4#
- 1...Bxd3
- 2.Qxc1#
- 1...Sxf2
- 2.Qxf2#
- 1...Qe1
- 2.Qe3#
- 2.Qd4#
- 2.Qc4#
- 1...Bb1
- 2.Re4#
- 2.Qd4#
- 2.Qxc1#
- 1...Bd1
- 2.Re4#
- 2.Qd4#
- 2.Qxc1#
- 1...Be5
- 2.Re4#
- 2.Qxe5#
- 1...Sf6
- 2.Qg5#
- 1...Sg3!
- threat
- 1.Qf8+?
- 1...Sf6
- 2.Qxf6#
- 2.Qxb8#
- 1...Sxf8+!
- 1...Sf6
- 1.b7?
- 1...Qe3+
- 2.Qxe3#
- 1...Re4+
- 2.Rxe4#
- 1...Sg5+
- 2.Qxg5#
- 1...Sf8+
- 2.Qxf8#
- 1...Qxb2
- 2.Bd2#
- 2.Qe3#
- 1...Rxa5
- 2.Re4#
- 2.Qb4#
- 2.Qd4#
- 2.Qc4#
- 1...Bxd3
- 2.Qxc1#
- 1...Sxf2
- 2.Qxf2#
- 1...Qd2
- 2.Bxd2#
- 1...Qa1
- 2.Bd2#
- 2.Qe3#
- 1...Qb1
- 2.Bd2#
- 2.Qe3#
- 1...Qd1
- 2.Qe3#
- 1...Qe1
- 2.Qe3#
- 1...Qf1
- 2.Bd2#
- 2.Qe3#
- 1...Qg1
- 2.Bd2#
- 2.Qe3#
- 1...Ra1
- 2.Re4#
- 2.Qb4#
- 2.Qd4#
- 2.Qc4#
- 1...Ra2
- 2.Re4#
- 2.Qb4#
- 2.Qd4#
- 2.Qc4#
- 1...Ra3
- 2.Re4#
- 2.Qb4#
- 2.Qd4#
- 2.Qc4#
- 1...Rb4
- 2.Qxb4#
- 1...Rc4
- 2.Qxc4#
- 1...Rd4
- 2.Qxd4#
- 1...Bb1
- 2.Qxc1#
- 1...Bd1
- 2.Qxc1#
- 1...Be5
- 2.Qxe5#
- 1...Bd6
- 2.Qxd6#
- 1...Ba7
- 2.Bc7#
- 2.Qd6#
- 2.Qe5#
- 2.Qc7#
- 1...Bc7
- 2.Bxc7#
- 2.Qxc7#
- 1...Sf6
- 2.Qg5#
- 1...g5
- 2.Qf5#
- 1...Sg3!
- 1...Qe3+
- 1.Bb4?
- Keys
- 1.Be1!
- 1...Qe3+
- 2.Qxe3#
- 2.fxe3#
- 1...Re4+
- 2.Rxe4#
- 1...Sg5+
- 2.Qxg5#
- 1...Sf8+
- 2.Qxf8#
- 1...Qxb2
- 2.Bd2#
- 2.Qe3#
- 1...Qxe1
- 2.Qe3#
- 1...Bxd3
- 2.Qxc1#
- 1...Sxf2
- 2.Qxf2#
- 1...Qd2
- 2.Bxd2#
- 1...Qa1
- 2.Bd2#
- 2.Qe3#
- 1...Qb1
- 2.Bd2#
- 2.Qe3#
- 1...Qd1
- 2.Qe3#
- 1...Ra1
- 2.Re4#
- 2.Qb4#
- 2.Qd4#
- 2.Qc4#
- 1...Ra2
- 2.Re4#
- 2.Qb4#
- 2.Qd4#
- 2.Qc4#
- 1...Ra3
- 2.Re4#
- 2.Qb4#
- 2.Qd4#
- 2.Qc4#
- 1...Rb4
- 2.Qxb4#
- 1...Rc4
- 2.Qxc4#
- 1...Rd4
- 2.Qxd4#
- 1...Ra5
- 2.Re4#
- 2.Qb4#
- 2.Qd4#
- 2.Qc4#
- 1...Ra6
- 2.Re4#
- 2.Qb4#
- 2.Qd4#
- 2.Qc4#
- 1...Ra7
- 2.Re4#
- 2.Qb4#
- 2.Qd4#
- 2.Qc4#
- 1...Ra8
- 2.Re4#
- 2.Qb4#
- 2.Qd4#
- 2.Qc4#
- 1...Bb1
- 2.Qxc1#
- 1...Bd1
- 2.Qxc1#
- 1...Be5
- 2.Qxe5#
- 1...Bd6
- 2.Qxd6#
- 1...Ba7
- 2.Qd6#
- 2.Qe5#
- 2.Qc7#
- 1...Bc7
- 2.Qxc7#
- 1...Sg3
- 2.fxg3#
- 1...Sf6
- 2.Qg5#
- 1...g5
- 2.Qf5#
- 1...Qe3+
- 1.Be1!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 1
- Sets
- Q(a);N_GUARD::B(G),XQ(a)
- Q(a);CHECK,N_GUARD::QAB1(H),XQ(a)
- Q(a);N_GUARD::QAB1(H)
- Q(a);N_GUARD,P_PINR(B)::QAB1(H)
- R(e);N_GUARD::QAR(H),XR(e)
- R(e);N_GUARD::QAR2(H),XR(e)
- R(e);CHECK,N_GUARD::R1(B),XR(e)
- B(c);OGATE::QAB(H),XQ(a)
- B(c);OGATE,XP(E)::QAB(H),XQ(a)
- B(i);N_GUARD::QAB1(H),XB(i)
- B(i);N_GUARD::QAB(H),XB(i)
- S(b);OGATE,XP(C)::QAR2(H),XS(b)
- S(h);CHECK,N_GUARD::QAB1(H),XS(h)
- S(h);N_GUARD::QAB1(H)
- S(h);CHECK,N_GUARD::QAR(H),XS(h)
- P(g);N_GUARD::QAR1(H)
- Tries
- Try
- B(G);
- Threat
- DUALS(3)
- Vars
- Q(a);CHECK,N_GUARD::QAB1(H),XQ(a)
- S(h);CHECK,N_GUARD::QAB1(H),XS(h)
- S(h);CHECK,N_GUARD::QAR(H),XS(h)
- R(e);OGATE,XB(G)::QAR(H),XR(e)
- B(c);OGATE,XP(E)::QAB(H),XQ(a)
- S(b);OGATE,XP(C)::QAR2(H),XS(b)
- S(h);N_GUARD::QAB1(H)
- Refutation
- S(b);
- Try
- Q(H);CHECK
- Refutation
- S(h);CHECK,XQ(H)
- Try
- P(I);
- Vars
- Q(a);CHECK,N_GUARD::QAB1(H),XQ(a)
- R(e);CHECK,N_GUARD::R1(B),XR(e)
- S(h);CHECK,N_GUARD::QAB1(H),XS(h)
- S(h);CHECK,N_GUARD::QAR(H),XS(h)
- B(c);OGATE,XP(E)::QAB(H),XQ(a)
- S(b);OGATE,XP(C)::QAR2(H),XS(b)
- Q(a);N_GUARD::B(G),XQ(a)
- Q(a);N_GUARD::QAB1(H)
- Q(a);N_GUARD,P_PINR(B)::QAB1(H)
- R(e);N_GUARD::QAR(H),XR(e)
- R(e);N_GUARD::QAR2(H),XR(e)
- B(c);OGATE::QAB(H),XQ(a)
- B(i);N_GUARD::QAB1(H),XB(i)
- B(i);N_GUARD::QAB(H),XB(i)
- S(h);N_GUARD::QAB1(H)
- P(g);N_GUARD::QAR1(H)
- Refutation
- S(b);
- Try
- Actual
- B(G);
- Vars
- R(e);CHECK,N_GUARD::R1(B),XR(e)
- S(h);CHECK,N_GUARD::QAB1(H),XS(h)
- S(h);CHECK,N_GUARD::QAR(H),XS(h)
- Q(a);N_GUARD,P_PINR(B),XB(G)::QAB1(H)
- B(c);OGATE,XP(E)::QAB(H),XQ(a)
- S(b);OGATE,XP(C)::QAR2(H),XS(b)
- Q(a);N_GUARD::B(G),XQ(a)
- Q(a);N_GUARD::QAB1(H)
- R(e);N_GUARD::QAR(H),XR(e)
- R(e);N_GUARD::QAR2(H),XR(e)
- B(c);OGATE::QAB(H),XQ(a)
- B(i);N_GUARD::QAB1(H),XB(i)
- B(i);N_GUARD::QAB(H),XB(i)
- S(b);OGATE::P(C),XS(b)
- S(h);N_GUARD::QAB1(H)
- P(g);N_GUARD::QAR1(H)
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).