MESON Chess Problem Database
Problem Display
PID: 146 (8/1Q6/7p/4K1nk/7P/5P2/1p2n1N1/1B5N w - - 0 1)
Vaughan, Colin V
1st HM., Wurzburg-75 JT, 1949
#2
7 + 5
| 70 | American Chess Problemist | 1950 |
| 3310 | 2345 Chess Problems | 1997 |
SOLUTION
- SOUND
- Sets
- 1...Sc1
- 2.Sg3#
- 1...Sg1
- 2.Sg3#
- 1...Sc3
- 2.Sg3#
- 1...Sg3
- 2.Sxg3#
- 1...Sd4
- 2.Sg3#
- 1...Sf4
- 2.Sg3#
- 1...Sxf3+
- 2.Qxf3#
- 1...Sh3
- 2.Qf7#
- 1...Se4
- 2.Qf7#
- 1...Se6
- 2.Qf7#
- 1...Sf7+
- 2.Qxf7#
- 1...Sh7
- 2.Qf7#
- 1...Sc1
- Tries
- 1.Kf5?
- 1...Sg3+
- 2.Sxg3#
- 1...Sxf3
- 2.Qxf3#
- 2.Qf7#
- 1...Sc1
- 2.Sg3#
- 1...Sg1
- 2.Sg3#
- 1...Sc3
- 2.Sg3#
- 1...Sf4
- 2.Sg3#
- 1...Sh3
- 2.Qf7#
- 1...Se4
- 2.Qf7#
- 1...Se6
- 2.Qf7#
- 1...Sf7
- 2.Qxf7#
- 1...Sh7
- 2.Qf7#
- 1...Sd4+!
- 1...Sg3+
- 1.Kd6?
- 1...Sf7+
- 2.Qxf7#
- 1...Sxf3
- 2.Qxf3#
- 1...Sc1
- 2.Sg3#
- 1...Sg1
- 2.Sg3#
- 1...Sc3
- 2.Sg3#
- 1...Sg3
- 2.Sxg3#
- 1...Sd4
- 2.Sg3#
- 1...Sf4
- 2.Sg3#
- 1...Sh3
- 2.Qf7#
- 1...Se6
- 2.Qf7#
- 1...Sh7
- 2.Qf7#
- 1...Se4+!
- 1...Sf7+
- 1.Qc6?
- threat
- 2.Bg6#
- 2.Qg6#
- 1...Sxf3+
- 2.Qxf3#
- 1...Sf4
- 2.Sg3#
- 1...Se4
- 2.Qe8#
- 1...Se6
- 2.Qe8#
- 1...Sf7+!
- threat
- 1.Qa8?
- 1...Sxf3+
- 2.Qxf3#
- 1...Se4
- 2.Qe8#
- 1...Sc1
- 2.Sg3#
- 1...Sg1
- 2.Sg3#
- 1...Sc3
- 2.Sg3#
- 1...Sg3
- 2.Sxg3#
- 1...Sd4
- 2.Sg3#
- 1...Sf4
- 2.Sg3#
- 1...Sh3
- 2.Qe8#
- 1...Se6
- 2.Qe8#
- 1...Sh7
- 2.Qe8#
- 1...Sf7+!
- 1...Sxf3+
- 1.Qb3?
- 1...Sxf3+
- 2.Qxf3#
- 1...Sf7+
- 2.Qxf7#
- 1...Se4
- 2.Qf7#
- 1...Sc1
- 2.Sg3#
- 1...Sg1
- 2.Sg3#
- 1...Sc3
- 2.Sg3#
- 1...Sg3
- 2.Sxg3#
- 1...Sd4
- 2.Sg3#
- 1...Sf4
- 2.Sg3#
- 1...Sh3
- 2.Qf7#
- 1...Sh7
- 2.Qf7#
- 1...Se6!
- 1...Sxf3+
- 1.Qa7?
- 1...Sf7+
- 2.Qxf7#
- 1...Se4
- 2.Qf7#
- 1...Sc1
- 2.Sg3#
- 1...Sg1
- 2.Sg3#
- 1...Sc3
- 2.Sg3#
- 1...Sg3
- 2.Sxg3#
- 1...Sd4
- 2.Sg3#
- 1...Sf4
- 2.Sg3#
- 1...Sh3
- 2.Qf7#
- 1...Se6
- 2.Qf7#
- 1...Sh7
- 2.Qf7#
- 1...Sxf3+!
- 1...Sf7+
- 1.Qc7?
- 1...Sf7+
- 2.Qxf7#
- 1...Se4
- 2.Qf7#
- 1...Sc1
- 2.Sg3#
- 1...Sg1
- 2.Sg3#
- 1...Sc3
- 2.Sg3#
- 1...Sg3
- 2.Sxg3#
- 1...Sd4
- 2.Sg3#
- 1...Sf4
- 2.Sg3#
- 1...Sh3
- 2.Qf7#
- 1...Se6
- 2.Qf7#
- 1...Sh7
- 2.Qf7#
- 1...Sxf3+!
- 1...Sf7+
- 1.Qd7?
- threat
- 2.Qg4#
- 1...Sf7+
- 2.Qxf7#
- 1...Se6
- 2.Qe8#
- 2.Qf7#
- 1...Sxf3+!
- threat
- 1.Qe7?
- 1...Sf7+
- 2.Qxf7#
- 1...Se4
- 2.Qf7#
- 2.Qe8#
- 1...Sc1
- 2.Sg3#
- 1...Sg1
- 2.Sg3#
- 1...Sc3
- 2.Sg3#
- 1...Sg3
- 2.Sxg3#
- 1...Sd4
- 2.Sg3#
- 1...Sf4
- 2.Sg3#
- 1...Sh3
- 2.Qf7#
- 2.Qe8#
- 1...Se6
- 2.Qf7#
- 2.Qe8#
- 1...Sh7
- 2.Qf7#
- 2.Qe8#
- 1...Sxf3+!
- 1...Sf7+
- 1.Qg7?
- threat
- 2.Bg6#
- 2.Qg6#
- 1...Sf7+
- 2.Qxf7#
- 1...Sf4
- 2.Sg3#
- 1...Se4
- 2.Qg4#
- 2.Qf7#
- 1...Sxf3+!
- threat
- 1.Kf5?
- Keys
- 1.Qd5!
- 1...Sxf3+
- 2.Qxf3#
- 1...Sf7+
- 2.Qxf7#
- 1...Se4
- 2.Qf7#
- 1...Sc1
- 2.Sg3#
- 1...Sg1
- 2.Sg3#
- 1...Sc3
- 2.Sg3#
- 1...Sg3
- 2.Sxg3#
- 1...Sd4
- 2.Sg3#
- 1...Sf4
- 2.Sg3#
- 1...Sh3
- 2.Qf7#
- 1...Se6
- 2.Kxe6#
- 1...Sh7
- 2.Qf7#
- 1...Sxf3+
- 1.Qd5!
This is a version
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 1
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- S(b);N_GUARD::S(B)
- S(b);N_GUARD::S(B),XS(b)
- S(c);CHECK,OGATE,XP(D)::QAB(G),XS(c)
- S(c);N_GUARD::QAB(G)
- S(c);CHECK,N_GUARD::QAB(G),XS(c)
- Tries
- Try
- K(F);P-FLIGHT
- Vars
- S(b);CHECK,N_GUARD::S(B),XS(b)
- S(b);N_GUARD::S(B)
- S(c);N_GUARD::QAB(G)
- S(c);N_GUARD::QAB(G),XS(c)
- Refutation
- S(b);CHECK
- Try
- K(F);S_FLIGHT
- Vars
- S(c);CHECK,N_GUARD::QAB(G),XS(c)
- S(c);OGATE,XP(D)::QAB(G),XS(c)
- S(b);N_GUARD::S(B)
- S(b);N_GUARD::S(B),XS(b)
- S(c);N_GUARD::QAB(G)
- Refutation
- S(c);CHECK
- Try
- Q(G);
- Threat
- DUALS(2)
- Vars
- S(c);CHECK,OGATE,XP(D)::QAB(G),XS(c)
- S(b);N_GUARD::S(B)
- S(c);N_GUARD::QAB(G)
- Refutation
- S(c);CHECK
- Try
- Q(G);
- Vars
- S(c);CHECK,OGATE,XP(D)::QAB(G),XS(c)
- S(c);N_GUARD::QAB(G)
- S(b);N_GUARD::S(B)
- S(b);N_GUARD::S(B),XS(b)
- Refutation
- S(c);CHECK
- Try
- Q(G);
- Vars
- S(c);CHECK,OGATE,XP(D)::QAB(G),XS(c)
- S(c);CHECK,N_GUARD::QAB(G),XS(c)
- S(c);N_GUARD::QAB(G)
- S(b);N_GUARD::S(B)
- S(b);N_GUARD::S(B),XS(b)
- Refutation
- S(c);
- Try
- Q(G);
- Vars
- S(c);CHECK,N_GUARD::QAB(G),XS(c)
- S(c);N_GUARD::QAB(G)
- S(b);N_GUARD::S(B)
- S(b);N_GUARD::S(B),XS(b)
- Refutation
- S(c);CHECK,XP(D)
- Try
- Q(G);
- Vars
- S(c);CHECK,N_GUARD::QAB(G),XS(c)
- S(c);N_GUARD::QAB(G)
- S(b);N_GUARD::S(B)
- S(b);N_GUARD::S(B),XS(b)
- Refutation
- S(c);CHECK,XP(D)
- Try
- Q(G);
- Threat
- QAB1(G)
- Vars
- S(c);CHECK,N_GUARD::QAB(G),XS(c)
- Refutation
- S(c);CHECK,XP(D)
- Try
- Q(G);
- Vars
- S(c);CHECK,N_GUARD::QAB(G),XS(c)
- S(b);N_GUARD::S(B)
- S(b);N_GUARD::S(B),XS(b)
- Refutation
- S(c);CHECK,XP(D)
- Try
- Q(G);
- Threat
- DUALS(2)
- Vars
- S(c);CHECK,N_GUARD::QAB(G),XS(c)
- S(b);N_GUARD::S(B)
- Refutation
- S(c);CHECK,XP(D)
- Try
- Actual
- Q(G);
- Vars
- S(c);CHECK,OGATE,XP(D)::QAB(G),XS(c)
- S(c);CHECK,N_GUARD::QAB(G),XS(c)
- S(c);N_GUARD::QAB(G)
- S(b);N_GUARD::S(B)
- S(b);N_GUARD::S(B),XS(b)
- S(c);::QAR(G)+K(F),XS(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).