MESON Chess Problem Database
Problem Display
PID: 21521 (3R4/p1Q1p2r/qp1N2bp/1P3P2/r2kB2K/4N3/3P4/3n4 w - - 0 1)
Wainwright, Joseph CJ
5th Prize, Good Companions (May), 1919
#2
9 + 10
| 3132 | The Good Companion Two-Mover | 1922 |
| 14868 | Pirnie Collection | 2011 |
SOLUTION
- SOUND
- Sets
- 1...Sb2
- 2.Qc3#
- 1...Sf2
- 2.Qc3#
- 1...Sc3
- 2.Qxc3#
- 1...Sxe3
- 2.Qc3#
- 1...e5
- 2.Sc2#
- 1...Sb2
- Tries
- 1.Bb1?
- threat
- 2.Sdc4#
- 2.Se4#
- 2.Sb7#
- 2.Sf7#
- 2.Sc8#
- 2.Se8#
- 1...Ke5+
- 2.Se4#
- 1...Qxb5
- 2.Sxb5#
- 1...Bxf5
- 2.Sdxf5#
- 1...exd6
- 2.Qxd6#
- 1...Qb7
- 2.Sxb7#
- 1...Qc8
- 2.Sxc8#
- 1...Rc4
- 2.Sdxc4#
- 2.Se4#
- 2.Sb7#
- 2.Sf7#
- 2.Sc8#
- 2.Se8#
- 1...Rf7
- 2.Sdc4#
- 2.Se4#
- 2.Sb7#
- 2.Sxf7#
- 2.Sc8#
- 2.Se8#
- 1...Rh8
- 2.Se8#
- 1...Bf7
- 2.Sxf7#
- 1...Be8
- 2.Sxe8#
- 1...Sc3
- 2.Qxc3#
- 1...e5
- 2.Sf7#
- 1...e6
- 2.Sf7#
- 1...Sxe3!
- threat
- 1.Bh1?
- threat
- 2.Sdc4#
- 2.Se4#
- 2.Sb7#
- 2.Sf7#
- 2.Sc8#
- 2.Se8#
- 1...Ke5+
- 2.Se4#
- 1...Qxb5
- 2.Sxb5#
- 1...Bxf5
- 2.Sdxf5#
- 1...Sxe3
- 2.Qc3#
- 1...exd6
- 2.Qxd6#
- 1...Qb7
- 2.Sxb7#
- 1...Qc8
- 2.Sxc8#
- 1...Rc4
- 2.Sdxc4#
- 2.Se4#
- 2.Sb7#
- 2.Sf7#
- 2.Sc8#
- 2.Se8#
- 1...Rf7
- 2.Sdc4#
- 2.Se4#
- 2.Sb7#
- 2.Sxf7#
- 2.Sc8#
- 2.Se8#
- 1...Rh8
- 2.Se8#
- 1...Bf7
- 2.Sxf7#
- 1...Be8
- 2.Sxe8#
- 1...Sc3
- 2.Qxc3#
- 1...e5
- 2.Sf7#
- 1...e6
- 2.Sf7#
- 1...Kd3+!
- threat
- 1.Bc2?
- threat
- 2.Sdc4#
- 2.Se4#
- 2.Sb7#
- 2.Sf7#
- 2.Sc8#
- 2.Se8#
- 1...Ke5+
- 2.Se4#
- 1...Qxb5
- 2.Sxb5#
- 1...Bxf5
- 2.Sdxf5#
- 1...exd6
- 2.Qxd6#
- 1...Qb7
- 2.Sxb7#
- 1...Qc8
- 2.Sxc8#
- 1...Rc4
- 2.Sdxc4#
- 2.Se4#
- 2.Sb7#
- 2.Sf7#
- 2.Sc8#
- 2.Se8#
- 1...Rf7
- 2.Sdc4#
- 2.Se4#
- 2.Sb7#
- 2.Sxf7#
- 2.Sc8#
- 2.Se8#
- 1...Rh8
- 2.Se8#
- 1...Bf7
- 2.Sxf7#
- 1...Be8
- 2.Sxe8#
- 1...Sc3
- 2.Qxc3#
- 1...e5
- 2.Sf7#
- 1...e6
- 2.Sf7#
- 1...Sxe3!
- threat
- 1.Bg2?
- threat
- 2.Sdc4#
- 2.Se4#
- 2.Sb7#
- 2.Sf7#
- 2.Sc8#
- 2.Se8#
- 1...Ke5+
- 2.Se4#
- 1...Qxb5
- 2.Sxb5#
- 1...Bxf5
- 2.Sdxf5#
- 1...Sxe3
- 2.Qc3#
- 1...exd6
- 2.Qxd6#
- 1...Qb7
- 2.Sxb7#
- 1...Qc8
- 2.Sxc8#
- 1...Rc4
- 2.Sdxc4#
- 2.Se4#
- 2.Sb7#
- 2.Sf7#
- 2.Sc8#
- 2.Se8#
- 1...Rf7
- 2.Sdc4#
- 2.Se4#
- 2.Sb7#
- 2.Sxf7#
- 2.Sc8#
- 2.Se8#
- 1...Rh8
- 2.Se8#
- 1...Bf7
- 2.Sxf7#
- 1...Be8
- 2.Sxe8#
- 1...Sc3
- 2.Qxc3#
- 1...e5
- 2.Sf7#
- 1...e6
- 2.Sf7#
- 1...Kd3+!
- threat
- 1.Bb1?
- Keys
- 1.Bf3!
- threat
- 2.Sdc4#
- 2.Se4#
- 2.Sb7#
- 2.Sf7#
- 2.Sc8#
- 2.Se8#
- 1...Kd3+
- 2.Sdc4#
- 1...Ke5+
- 2.Se4#
- 1...Qxb5
- 2.Sxb5#
- 1...Bxf5
- 2.Sdxf5#
- 1...Sxe3
- 2.Qc3#
- 1...exd6
- 2.Qxd6#
- 1...Qb7
- 2.Sxb7#
- 1...Qc8
- 2.Sxc8#
- 1...Rc4
- 2.Sdxc4#
- 2.Se4#
- 2.Sb7#
- 2.Sf7#
- 2.Sc8#
- 2.Se8#
- 1...Rf7
- 2.Sdc4#
- 2.Se4#
- 2.Sb7#
- 2.Sxf7#
- 2.Sc8#
- 2.Se8#
- 1...Rh8
- 2.Se8#
- 1...Bf7
- 2.Sxf7#
- 1...Be8
- 2.Sxe8#
- 1...Sc3
- 2.Qxc3#
- 1...e5
- 2.Sf7#
- 1...e6
- 2.Sf7#
- threat
- 1.Bf3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 11
- REMOVED MATES = 2
- Sets
- S(a);N_GUARD::QAB1(H)
- S(a);N_GUARD::QAB1(H),XS(a)
- S(a);N_GUARD,XS(B)::QAB1(H)
- P(i);SBLOCK::S(B)
- Tries
- Try
- B(C);
- Threat
- DUALS(6)
- Vars
- K(c);CHECK,S_FLIGHT::QAB(H)+S(G)
- Q(d);XP(E)::R(I)+S(G),DCHECK,XQ(d)
- B(f);XP(F)::R(I)+S(G),DCHECK,XB(f)
- P(i);OGATE,P_SPINP(i),XS(G)::QAR2(H),XP(i)
- Q(d);::R(I)+S(G),XQ(d)
- R(j);::R(I)+S(G)
- B(f);::R(I)+S(G),XB(f)
- S(a);N_GUARD::QAB1(H),XS(a)
- P(i);::R(I)+S(G)
- Refutation
- S(a);XS(B)
- Try
- B(C);
- Threat
- DUALS(6)
- Vars
- K(c);CHECK,S_FLIGHT::QAB(H)+S(G)
- Q(d);XP(E)::R(I)+S(G),DCHECK,XQ(d)
- B(f);XP(F)::R(I)+S(G),DCHECK,XB(f)
- S(a);N_GUARD,XS(B)::QAB1(H)
- P(i);OGATE,P_SPINP(i),XS(G)::QAR2(H),XP(i)
- Q(d);::R(I)+S(G),XQ(d)
- R(j);::R(I)+S(G)
- B(f);::R(I)+S(G),XB(f)
- S(a);N_GUARD::QAB1(H),XS(a)
- P(i);::R(I)+S(G)
- Refutation
- K(c);CHECK,P-FLIGHT
- Try
- B(C);
- Threat
- DUALS(6)
- Vars
- K(c);CHECK,S_FLIGHT::QAB(H)+S(G)
- Q(d);XP(E)::R(I)+S(G),DCHECK,XQ(d)
- B(f);XP(F)::R(I)+S(G),DCHECK,XB(f)
- P(i);OGATE,P_SPINP(i),XS(G)::QAR2(H),XP(i)
- Q(d);::R(I)+S(G),XQ(d)
- R(j);::R(I)+S(G)
- B(f);::R(I)+S(G),XB(f)
- S(a);N_GUARD::QAB1(H),XS(a)
- P(i);::R(I)+S(G)
- Refutation
- S(a);XS(B)
- Try
- B(C);
- Threat
- DUALS(6)
- Vars
- K(c);CHECK,S_FLIGHT::QAB(H)+S(G)
- Q(d);XP(E)::R(I)+S(G),DCHECK,XQ(d)
- B(f);XP(F)::R(I)+S(G),DCHECK,XB(f)
- S(a);N_GUARD,XS(B)::QAB1(H)
- P(i);OGATE,P_SPINP(i),XS(G)::QAR2(H),XP(i)
- Q(d);::R(I)+S(G),XQ(d)
- R(j);::R(I)+S(G)
- B(f);::R(I)+S(G),XB(f)
- S(a);N_GUARD::QAB1(H),XS(a)
- P(i);::R(I)+S(G)
- Refutation
- K(c);CHECK,P-FLIGHT
- Try
- Actual
- B(C);
- Threat
- DUALS(6)
- Vars
- K(c);CHECK,P-FLIGHT::R(I)+S(G)
- K(c);CHECK,S_FLIGHT::QAB(H)+S(G)
- Q(d);XP(E)::R(I)+S(G),DCHECK,XQ(d)
- B(f);XP(F)::R(I)+S(G),DCHECK,XB(f)
- S(a);N_GUARD,XS(B)::QAB1(H)
- P(i);OGATE,P_SPINP(i),XS(G)::QAR2(H),XP(i)
- Q(d);::R(I)+S(G),XQ(d)
- R(j);::R(I)+S(G)
- B(f);::R(I)+S(G),XB(f)
- S(a);N_GUARD::QAB1(H),XS(a)
- P(i);::R(I)+S(G)
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).