MESON Chess Problem Database
Problem Display
PID: 29644 (5KN1/8/5Nk1/6pn/8/4n2Q/8/8 w - - 0 1)
Wurzburg, Otto
Staten Islander, 1918
#2
4 + 4
| 3325 | Wurzburg Artistry | 1974 |
SOLUTION
- SOUND
- Sets
- 1...Sd1
- 2.Qd3#
- 1...Sf1
- 2.Qd3#
- 1...Sc2
- 2.Qd3#
- 1...Sg2
- 2.Qd3#
- 1...Sc4
- 2.Qd3#
- 1...Sg4
- 2.Qd3#
- 1...Sd5
- 2.Qd3#
- 1...Sf5
- 2.Qxh5#
- 1...Sg3
- 2.Qh7#
- 1...Sf4
- 2.Qh7#
- 1...Sxf6
- 2.Se7#
- 1...Sg7
- 2.Qh7#
- 1...g4
- 2.Qxh5#
- 1...Sd1
- Tries
- 1.Se7+?
- 1...Kh6
- 2.Qxh5#
- 1...Kxf6!
- 1...Kh6
- 1.Se7+?
- Keys
- 1.Qh1!
- 1...Kf5
- 2.Qe4#
- 1...Sxf6
- 2.Se7#
- 1...g4
- 2.Qxh5#
- 1...Sf5
- 2.Qxh5#
- 1...Sd1
- 2.Qe4#
- 1...Sf1
- 2.Qe4#
- 1...Sc2
- 2.Qe4#
- 1...Sg2
- 2.Qb1#
- 1...Sc4
- 2.Qe4#
- 2.Qb1#
- 1...Sg4
- 2.Qe4#
- 2.Qb1#
- 1...Sd5
- 2.Qe4#
- 2.Qb1#
- 1...Sg3
- 2.Qh7#
- 1...Sf4
- 2.Qh7#
- 1...Sg7
- 2.Qh7#
- 1...Kf5
- 1.Qh1!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 4
- ADDED MATES = 1
- REMOVED MATES = 3
- Sets
- S(a);OGATE::QAB(A)
- S(a);SBLOCK::QAB1(A),XS(c)
- S(c);OGATE::QAB1(A)
- S(c);SBLOCK,XS(B)::S(D)
- P(b);::QAB1(A),XS(c)
- Tries
- Try
- S(D);CHECK
- Vars
- K(d);P-FLIGHT,P_SPINS(c)::QAR1(A),XS(c)
- Refutation
- K(d);P-FLIGHT,XS(B)
- Try
- Actual
- Q(A);
- Vars
- K(d);S_FLIGHT::QAB1(A)
- S(c);SBLOCK,XS(B)::S(D)
- P(b);::QAB1(A),XS(c)
- S(a);SBLOCK::QAB1(A),XS(c)
- S(a);N_GUARD::QAB(A)
- S(c);OGATE::QAB1(A)
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).