MESON Chess Problem Database
Problem Display
PID: 64430 (2bb1r2/2RppkNP/2R2NpK/2B3P1/2n3p1/1Bp5/qPP1Qp2/8 w - - 0 1)
Westbury, Eric Ernest
5th HM., Good Companions (May), 1918
#2
12 + 12
| 3132 | The Good Companion Two-Mover | 1922 |
| 56 | The Problemist | 2006 |
| 5454 | Near Snap | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Rg8
- 2.hxg8Q#
- 1...Bxc7
- 2.Qxe7#
- 1...exf6
- 2.Qxc4#
- 2.Qe6#
- 1...e5
- 2.Qxc4#
- 1...e6
- 2.Qxe6#
- 1...Rg8
- Tries
- 1.Sxg4?
- threat
- 2.Se5#
- 2.Qf3#
- 2.Qxf2#
- 1...Qxb3
- 2.Qf3#
- 2.Qxf2#
- 1...Bxc7
- 2.Qxe7#
- 1...dxc6
- 2.Se5#
- 1...Re8
- 2.Qf3#
- 2.Qxf2#
- 1...Rg8
- 2.Qf3#
- 2.Qxf2#
- 1...Rh8
- 2.Qf3#
- 2.Qxf2#
- 1...f1Q
- 2.Se5#
- 2.Qxf1#
- 1...f1S
- 2.Se5#
- 2.Qxf1#
- 2.Qf3#
- 2.Qf2#
- 1...f1B
- 2.Se5#
- 2.Qxf1#
- 2.Qf3#
- 2.Qf2#
- 1...f1R
- 2.Se5#
- 2.Qxf1#
- 1...d5
- 2.Rf6#
- 1...e5
- 2.Sxe5#
- 2.Qxc4#
- 1...e6
- 2.Qxe6#
- 1...d6!
- threat
- 1.Sxd7?
- threat
- 2.Se5#
- 2.Qxf2#
- 2.Qe6#
- 1...Qxb3
- 2.Qxf2#
- 2.Qe6#
- 1...Bxc7
- 2.Qe6#
- 2.Qxe7#
- 1...f1Q
- 2.Se5#
- 2.Qxf1#
- 2.Qe6#
- 1...f1S
- 2.Se5#
- 2.Qxf1#
- 2.Qf2#
- 2.Qe6#
- 1...f1B
- 2.Se5#
- 2.Qxf1#
- 2.Qf2#
- 2.Qe6#
- 1...f1R
- 2.Se5#
- 2.Qxf1#
- 2.Qe6#
- 1...Re8
- 2.Qxf2#
- 2.Qe6#
- 1...Rg8
- 2.Qxf2#
- 2.Qe6#
- 1...Rh8
- 2.Qxf2#
- 2.Qe6#
- 1...g3
- 2.Se5#
- 2.Qf3#
- 2.Qe6#
- 1...e5
- 2.Sxe5#
- 2.Qxc4#
- 1...e6
- 2.Se5#
- 2.Qxe6#
- 1...Bxd7!
- threat
- 1.Qxc4+?
- 1...e6
- 2.Qxe6#
- 1...d5!
- 1...e6
- 1.Sxg4?
- Keys
- 1.Sfe8!
- threat
- 2.Qxf2#
- 1...Bxc7
- 2.Qxe7#
- 1...dxc6
- 2.Sd6#
- 1...f1Q
- 2.Qxf1#
- 1...f1S
- 2.Qxf1#
- 2.Qf2#
- 1...f1B
- 2.Qxf1#
- 2.Qf2#
- 1...f1R
- 2.Qxf1#
- 1...d6
- 2.Sxd6#
- 1...g3
- 2.Qf3#
- 1...d5
- 2.Rf6#
- 1...e5
- 2.Qxc4#
- 1...e6
- 2.Qxe6#
- threat
- 1.Sfe8!
This anticipates 243461(1947)
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 6
- REMOVED MATES = 1
- Sets
- R(l);OGATE::PXR(l)=Q
- B(k);N_GUARD,XR(J)::QAR1(C),XP(h)
- P(h);N_GUARD,P_SPINP(g)::QAB(C),XS(d)
- P(h);N_SPINS(d),P_SPINP(g)::QAB1(C),XP(h)
- Tries
- Try
- S(H);XP(e)
- Threat
- DUALS(3)
- Vars
- B(k);N_GUARD,XR(J)::QAR1(C),XP(h)
- P(g);P_SPINP(h),XR(G)::S(H)
- P(g);N_SPINS(d),P_SPINP(h)::R1(G)
- P(h);N_SPINS(d),P_SPINP(g)::QAB1(C),XP(h)
- Refutation
- P(g);P_SPINP(h)
- Try
- S(H);XP(g)
- Threat
- DUALS(3)
- Refutation
- B(j);XS(H)
- Try
- Q(C);CHECK,XS(d)
- Vars
- P(h);P_SPINP(h),S_CUTP(g)::QAB1(C),XP(h)
- Refutation
- P(g);P_SPINP(g)
- Try
- Actual
- S(H);
- Threat
- QAR(C),XP(b)
- Vars
- B(k);N_GUARD,XR(J)::QAR1(C),XP(h)
- P(g);P_SPINP(h),XR(G)::S(H)
- P(b);OGATEB::QAR(C),XQ(b)
- P(b);OGATEB::QAR(C),XR(b)
- P(g);P_SPINP(h)::S(H),XP(g)
- P(e);N_GUARD::QAR(C)
- P(g);N_SPINS(d),P_SPINP(h)::R1(G)
- P(h);N_GUARD,P_SPINP(g)::QAB(C),XS(d)
- P(h);N_SPINS(d),P_SPINP(g)::QAB1(C),XP(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).