MESON Chess Problem Database
Problem Display
PID: 60812 (4N3/1q2p3/1P2r3/4kB1R/3rbN1K/5P2/8/BQ1n1R2 w - - 0 1)
Wainwright, Joseph CJ
Good Companions (November), 1919
#2
10 + 7
| 3132 | The Good Companion Two-Mover | 1922 |
SOLUTION
- SOUND
- Sets
- 1...Qa6
- 2.Qxe4#
- 1...Qc8
- 2.Qxe4#
- 1...Qxb6
- 2.Qxe4#
- 1...Qa7
- 2.Qxe4#
- 1...Qc7
- 2.Qxe4#
- 1...Qd7
- 2.Qxe4#
- 1...Qb8
- 2.Qxe4#
- 1...Rc6
- 2.Qxe4#
- 1...Bxf5
- 2.Rxf5#
- 2.Qxf5#
- 1...Qa6
- Tries
- 1.Sd3+?
- 1...Kd5
- 2.Qb5#
- 1...Bxd3+!
- 1...Kd5
- 1.Sg6+?
- 1...Kd5
- 2.Qb5#
- 1...Rxg6!
- 1...Kd5
- 1.Bh3+?
- 1...Bf5
- 2.Rxf5#
- 2.Qxf5#
- 1...Kxf4!
- 1...Bf5
- 1.Bg4+?
- 1...Bf5
- 2.Rxf5#
- 2.Qxf5#
- 1...Kxf4!
- 1...Bf5
- 1.Bxe6+?
- 1...Bf5
- 2.Rxf5#
- 2.Qxf5#
- 1...Kxf4!
- 1...Bf5
- 1.Bg6+?
- 1...Bf5
- 2.Rxf5#
- 2.Qxf5#
- 1...Kxf4!
- 1...Bf5
- 1.Bh7+?
- 1...Bf5
- 2.Rxf5#
- 2.Qxf5#
- 1...Kxf4!
- 1...Bf5
- 1.fxe4?
- threat
- 2.Sd3#
- 2.Bh3#
- 2.Bg4#
- 2.Bxe6#
- 2.Bg6#
- 2.Bh7#
- 1...Qxe4
- 2.Bxe4#
- 2.Qxe4#
- 1...Rxb6
- 2.Sd3#
- 2.Bh3#
- 2.Bg4#
- 2.Be6#
- 2.Bg6#
- 2.Bd7#
- 2.Bh7#
- 2.Bc8#
- 1...Qa6
- 2.Bh3#
- 2.Bg4#
- 2.Bxe6#
- 2.Bg6#
- 2.Bh7#
- 1...Rc6
- 2.Sd3#
- 2.Bh3#
- 2.Bg4#
- 2.Be6#
- 2.Bg6#
- 2.Bd7#
- 2.Bh7#
- 2.Bc8#
- 1...Rd6
- 2.Sd3#
- 2.Bh3#
- 2.Bg4#
- 2.Be6#
- 2.Bg6#
- 2.Bd7#
- 2.Bh7#
- 2.Bc8#
- 1...Rf6
- 2.Sd3#
- 1...Rg6
- 2.Sd3#
- 2.Sxg6#
- 2.Bxg6#
- 1...Rh6
- 2.Sd3#
- 1...Sb2
- 2.Bh3#
- 2.Bg4#
- 2.Bxe6#
- 2.Bg6#
- 2.Bh7#
- 1...Sc3
- 2.Bh3#
- 2.Bg4#
- 2.Bxe6#
- 2.Bg6#
- 2.Bh7#
- 1...Se3
- 2.Sd3#
- 1...Sf2!
- threat
- 1.Sd3+?
- Keys
- 1.Sd5!
- threat
- 2.Bxe4#
- 2.Qxe4#
- 1...Bxb1+
- 2.Be4#
- 1...Bc2+
- 2.Be4#
- 1...Bd3+
- 2.Be4#
- 1...Bxf3+
- 2.Bg4#
- 1...Bxd5+
- 2.f4#
- 1...Bxf5+
- 2.Qe4#
- 1...Kxd5
- 2.Qb5#
- 1...Qxd5
- 2.f4#
- 1...Rxb6
- 2.Qxe4#
- 1...Rc6
- 2.Qxe4#
- 1...Rd6
- 2.Qxe4#
- 1...Rf6
- 2.Qxe4#
- 1...Rg6
- 2.Qxe4#
- 1...Rh6
- 2.Qxe4#
- 1...Sb2
- 2.Bxe4#
- 1...Sf2
- 2.Bxe4#
- 1...Sc3
- 2.Bxe4#
- 1...Se3
- 2.Qxe4#
- threat
- 1.Sd5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 17
- REMOVED MATES = 7
- Sets
- Q(f);N_GUARD::QAR1(B),XB(c)
- Q(f);N_GUARD,XP(I)::QAR1(B),XB(c)
- R(e);S_CUTQ(f)::QAR1(B),XB(c)
- Tries
- Try
- S(E);CHECK
- Vars
- K(d);N_SPINR(b),P-FLIGHT::QAR2(B)
- Refutation
- B(c);CHECK,XS(E)
- Try
- S(E);CHECK
- Vars
- K(d);N_SPINR(b),P-FLIGHT::QAR2(B)
- Refutation
- R(e);XS(E)
- Try
- B(G);CHECK
- Refutation
- K(d);N_SPINR(b),S_FLIGHT,XS(E)
- Try
- B(G);CHECK
- Refutation
- K(d);N_SPINR(b),S_FLIGHT,XS(E)
- Try
- B(G);CHECK,XR(e)
- Refutation
- K(d);N_SPINR(b),S_FLIGHT,XS(E)
- Try
- B(G);CHECK
- Refutation
- K(d);N_SPINR(b),S_FLIGHT,XS(E)
- Try
- B(G);CHECK
- Refutation
- K(d);N_SPINR(b),S_FLIGHT,XS(E)
- Try
- P(D);XB(c)
- Threat
- DUALS(6)
- Vars
- R(e);::S(E)
- R(e);P_PINR(H)::S(E)
- S(a);::S(E)
- Refutation
- S(a);
- Try
- Actual
- S(E);
- Threat
- DUALS(2)
- Vars
- B(c);CHECK,XQ(B)::R(H)+B(G)
- B(c);CHECK::R(H)+B(G)
- B(c);CHECK,N_GUARD,XP(D)::R(H)+B(G)
- B(c);CHECK,SBLOCK,XS(E)::P(D)
- B(c);CHECK,P_SPINB(c),XB(G)::QAR1(B)
- K(d);N_SPINR(b),OGATEB,P-FLIGHT,XS(E)::QAR2(B)
- Q(f);SBLOCK,XS(E)::P(D)
- R(e);XP(I)::QAR1(B),XB(c)
- R(e);::QAR1(B),XB(c)
- R(e);P_PINR(H)::QAR1(B),XB(c)
- S(a);N_SPINR(b)::R(H)+B(G),XB(c)
- S(a);::R(H)+B(G),XB(c)
- S(a);::QAR1(B),XB(c)
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).