MESON Chess Problem Database
Problem Display
PID: 61012 (2Br2Rr/4N3/1pN2kPP/qn1Q2pR/4p3/1nb5/b7/B2K4 w - - 0 1)
Heydon, Joseph Kentigern
2nd Prize, Good Companions (December), 1920
#2
10 + 11
| 3132 | The Good Companion Two-Mover | 1922 |
SOLUTION
- SOUND
- Sets
- 1...Rxd5+
- 2.Sxd5#
- 1...Rxc8
- 2.Qf7#
- 2.Qf5#
- 1...Re8
- 2.Qe6#
- 2.Qf7#
- 2.Qf5#
- 2.Qxg5#
- 1...Rf8
- 2.Qe6#
- 2.Qf5#
- 2.Qxg5#
- 1...Rdxg8
- 2.Qe6#
- 2.Qf7#
- 2.Qf5#
- 2.Qxg5#
- 1...Bd4
- 2.Qe6#
- 2.Qf7#
- 2.Qf5#
- 2.Qxg5#
- 1...Be5
- 2.Bxe5#
- 1...Sd2
- 2.Qf5#
- 2.Qxg5#
- 1...S3d4
- 2.Qe5#
- 2.Qxg5#
- 1...S5d4
- 2.Qf7#
- 1...Sd6
- 2.Qe6#
- 1...g4
- 2.Rf5#
- 1...Rxd5+
- Tries
- 1.Bd7?
- threat
- 2.Qe6#
- 2.Qf7#
- 2.Qf5#
- 2.Qxg5#
- 1...Sxa1
- 2.Qf5#
- 2.Qxg5#
- 1...Rf8
- 2.Qe6#
- 2.Qf5#
- 2.Qxg5#
- 1...Rh7
- 2.Qe6#
- 2.Qf5#
- 2.Qxg5#
- 1...Be5
- 2.Bxe5#
- 2.Qe6#
- 2.Qf7#
- 2.Qxe5#
- 1...Sc1
- 2.Qf5#
- 2.Qxg5#
- 1...Sd2
- 2.Qf5#
- 2.Qxg5#
- 1...S3d4
- 2.Qe5#
- 2.Qxg5#
- 1...Sc5
- 2.Qf5#
- 2.Qxg5#
- 1...Sa3
- 2.Qe6#
- 2.Qf7#
- 2.Qd6#
- 1...S5d4
- 2.Qf7#
- 1...Sd6
- 2.Qe6#
- 2.Qxd6#
- 1...Sa7
- 2.Qe6#
- 2.Qf7#
- 2.Qd6#
- 1...Sc7
- 2.Qf7#
- 1...g4
- 2.Rf5#
- 2.Qe6#
- 2.Qf7#
- 2.Qf5#
- 2.Qg5#
- 1...Rxd7!
- threat
- 1.Rh2?
- threat
- 2.Rf2#
- 1...Rxd5+
- 2.Sxd5#
- 1...Sd2
- 2.Qf5#
- 1...S3d4
- 2.Qe5#
- 1...S5d4
- 2.Qf7#
- 1...Sd6
- 2.Qe6#
- 1...e3!
- threat
- 1.Rxd8?
- threat
- 2.Qe6#
- 2.Qf7#
- 2.Qf5#
- 2.Qxg5#
- 1...Rxh6
- 2.Qf7#
- 1...Sxa1
- 2.Qf5#
- 2.Qxg5#
- 1...S5d4
- 2.Qf7#
- 1...Rh7
- 2.Qe6#
- 2.Qf5#
- 2.Qxg5#
- 1...Rf8
- 2.Rxf8#
- 2.Qe6#
- 2.Qf5#
- 2.Qxg5#
- 1...Be5
- 2.Bxe5#
- 2.Qe6#
- 2.Qf7#
- 2.Qxe5#
- 1...Sc1
- 2.Qf5#
- 2.Qxg5#
- 1...Sd2
- 2.Qf5#
- 2.Qxg5#
- 1...S3d4
- 2.Qe5#
- 2.Qxg5#
- 1...Sc5
- 2.Qf5#
- 2.Qxg5#
- 1...Sa3
- 2.Rd6#
- 2.Qe6#
- 2.Qf7#
- 2.Qd6#
- 1...Sd6
- 2.Rxd6#
- 2.Qe6#
- 2.Qxd6#
- 1...Sa7
- 2.Rd6#
- 2.Qe6#
- 2.Qf7#
- 2.Qd6#
- 1...Sc7
- 2.Qf7#
- 1...g4
- 2.Rf5#
- 2.Qe6#
- 2.Qf7#
- 2.Qf5#
- 2.Qg5#
- 1...Rxd8!
- threat
- 1.Rf8+?
- 1...Rdxf8
- 2.Qe6#
- 2.Qf5#
- 2.Qxg5#
- 1...Rhxf8!
- 1...Rdxf8
- 1.Qxd8?
- threat
- 2.Sd5#
- 2.Sf5#
- 2.Qf8#
- 1...Sxa1
- 2.Sd5#
- 2.Sf5#
- 1...Qb4
- 2.Sd5#
- 2.Qf8#
- 1...Qa3
- 2.Sd5#
- 2.Qf8#
- 1...Qa7
- 2.Sd5#
- 2.Qf8#
- 1...Rh7
- 2.Sd5#
- 1...Sc1
- 2.Sd5#
- 2.Sf5#
- 1...Sd2
- 2.Sd5#
- 2.Sf5#
- 1...S3d4
- 2.Sd5#
- 2.Sf5#
- 1...Sc5
- 2.Sd5#
- 2.Sf5#
- 1...Sd6
- 2.Sd5#
- 2.Sf5#
- 2.Qxd6#
- 1...Rxg8!
- threat
- 1.Bd7?
- Keys
- 1.Rh1!
- threat
- 2.Rf1#
- 1...Rxd5+
- 2.Sxd5#
- 1...Sd2
- 2.Qf5#
- 1...S3d4
- 2.Qe5#
- 1...S5d4
- 2.Qf7#
- 1...Sd6
- 2.Qe6#
- threat
- 1.Rh1!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 2
- Sets
- R(j);CHECK,XQ(C)::S(H),XR(j)
- B(c);OGATE::B(A),XB(c)
- S(f);N_PINQ(C),N_SPINB(c)::QAR1(C)
- S(f);N_PINQ(C)::QAR1(C)
- P(g);OGATE::R1(D)
- Tries
- Try
- B(I);N_SPINQ(C)
- Threat
- DUALS(4)
- Vars
- S(f);N_SPINB(c)::QAR1(C)
- S(f);::QAR1(C)
- Refutation
- R(j);P_PINQ(C),XB(I)
- Try
- R(D);
- Threat
- R(D)
- Vars
- R(j);CHECK,XQ(C)::S(H),XR(j)
- S(b);N_PINQ(C)::QAR1(C)
- S(b);N_PINQ(C),N_SPINB(c)::QAB1(C)
- S(f);N_PINQ(C),N_SPINB(c)::QAR1(C)
- S(f);N_PINQ(C)::QAR1(C)
- Refutation
- P(d);
- Try
- R(J);N_SPINQ(C),XR(j)
- Threat
- DUALS(4)
- Vars
- R(k);XP(G)::QAR1(C)
- S(f);N_SPINB(c)::QAR1(C)
- S(f);::QAR1(C)
- Refutation
- R(k);P_PINQ(C),XR(J)
- Try
- R(J);CHECK
- Refutation
- R(k);XR(J)
- Try
- Q(C);N_SPINQ(C),XR(j)
- Threat
- DUALS(3)
- Vars
- R(k);::QAB(C)+S(H),DCHECK
- Refutation
- R(k);XR(J)
- Try
- Actual
- R(D);
- Threat
- R(D)
- Vars
- R(j);CHECK,XQ(C)::S(H),XR(j)
- S(b);N_PINQ(C)::QAR1(C)
- S(b);N_PINQ(C),N_SPINB(c)::QAB1(C)
- S(f);N_PINQ(C),N_SPINB(c)::QAR1(C)
- S(f);N_PINQ(C)::QAR1(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).