MESON Chess Problem Database
Problem Display
PID: 198067 (8/7K/6N1/5n1k/5Q2/4n3/8/8 w - - 0 1)
Lewis, Robert Tony
The Problemist, 1982
#2
3 + 3
| 3713 | Snap | 2019 |
| 5454 | Near Snap | 2024 |
SOLUTION
- SOUND
- Sets
- 1...Sd1
- 2.Qxf5#
- 1...Sf1
- 2.Qxf5#
- 1...Sc2
- 2.Qxf5#
- 1...Sg2
- 2.Qxf5#
- 1...Sc4
- 2.Qxf5#
- 1...Sg4
- 2.Qxf5#
- 1...Sd5
- 2.Qxf5#
- 1...Sg3
- 2.Qh4#
- 1...Sd4
- 2.Qh4#
- 1...Sh4
- 2.Qxh4#
- 1...Sd6
- 2.Qh4#
- 1...Sh6
- 2.Qh4#
- 1...Se7
- 2.Qh4#
- 1...Sg7
- 2.Qh4#
- 1...Sd1
- Tries
- 1.Qf3+?
- 1...Sg4
- 2.Qxf5#
- 1...Kg5!
- 1...Sg4
- 1.Qe4?
- 1...Sd1
- 2.Qxf5#
- 1...Sf1
- 2.Qxf5#
- 1...Sc2
- 2.Qxf5#
- 1...Sg2
- 2.Qxf5#
- 1...Sc4
- 2.Qxf5#
- 1...Sg4
- 2.Qxf5#
- 1...Sd5
- 2.Qxf5#
- 1...Sg3
- 2.Qh4#
- 1...Sd4
- 2.Qh4#
- 1...Sh4
- 2.Qxh4#
- 1...Sd6
- 2.Qh4#
- 1...Sh6
- 2.Qh4#
- 1...Se7
- 2.Qh4#
- 1...Sg7
- 2.Qh4#
- 1...Kg5!
- 1...Sd1
- 1.Qf3+?
- Keys
- 1.Se5!
- 1...Sg4
- 2.Qxg4#
- 1...Sd1
- 2.Qg4#
- 1...Sf1
- 2.Qg4#
- 1...Sc2
- 2.Qg4#
- 1...Sg2
- 2.Qg4#
- 1...Sc4
- 2.Qg4#
- 1...Sd5
- 2.Qg4#
- 1...Sg3
- 2.Qh6#
- 1...Sd4
- 2.Qh6#
- 1...Sh4
- 2.Qh6#
- 1...Sd6
- 2.Qh6#
- 1...Sh6
- 2.Qxh6#
- 1...Se7
- 2.Qh6#
- 1...Sg7
- 2.Qh6#
- 1...Sg4
- 1.Se5!
Anticipated by 22121(1924), 143818(1947), 273849(1972)
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 14
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- S(a);N_GUARD::QAR2(A),XS(b)
- S(b);N_GUARD::QAR1(A)
- S(b);N_GUARD::QAR1(A),XS(b)
- Tries
- Try
- Q(A);CHECK
- Vars
- S(a);N_GUARD,P_SPINS(a)::QAR2(A),XS(b)
- Refutation
- K(c);P-FLIGHT
- Try
- Q(A);
- Vars
- S(a);N_GUARD::QAR2(A),XS(b)
- S(b);N_GUARD::QAR1(A)
- S(b);N_GUARD::QAR1(A),XS(b)
- Refutation
- K(c);P-FLIGHT
- Try
- Actual
- S(B);
- Vars
- S(a);N_GUARD::QAB1(A),XS(a)
- S(a);N_GUARD::QAB1(A)
- S(b);N_GUARD::QAR1(A)
- S(b);N_GUARD,SBLOCK::QAR1(A)
- S(b);N_GUARD::QAR1(A),XS(b)
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).