MESON Chess Problem Database
Problem Display
PID: 137312 (2K5/8/3N4/2n3N1/3B1k1b/5p2/5n1P/6Q1 w - - 0 1)
Niemeijer, Meindert
Good Companions, 1920
#2
6 + 5
| 14721 | Australasian Chess Magazine | 1920 |
SOLUTION
- SOUND
- Sets
- 1...Bg3
- 2.Qxg3#
- 1...Bxg5
- 2.Qg3#
- 1...Sd1
- 2.Sh3#
- 1...Sh1
- 2.Sh3#
- 1...Sfd3
- 2.Sh3#
- 1...Sh3
- 2.Sxh3#
- 1...Sfe4
- 2.Sh3#
- 1...Sg4
- 2.Sh3#
- 1...Sb3
- 2.Se6#
- 1...Scd3
- 2.Se6#
- 1...Sa4
- 2.Se6#
- 1...Sce4
- 2.Se6#
- 1...Sa6
- 2.Se6#
- 1...Se6
- 2.Sxe6#
- 1...Sb7
- 2.Se6#
- 1...Sd7
- 2.Se6#
- 1...Bg3
- Tries
- 1.Kc7?
- 1...Se6+
- 2.Sxe6#
- 1...Bxg5
- 2.Qg3#
- 1...Bg3
- 2.Qxg3#
- 1...Sg4
- 2.Sh3#
- 1...Sd1
- 2.Sh3#
- 1...Sh1
- 2.Sh3#
- 1...Sfd3
- 2.Sh3#
- 1...Sh3
- 2.Sxh3#
- 1...Sfe4
- 2.Sh3#
- 1...Sb3
- 2.Se6#
- 1...Scd3
- 2.Se6#
- 1...Sa4
- 2.Se6#
- 1...Sce4
- 2.Se6#
- 1...Sb7
- 2.Se6#
- 1...Sd7
- 2.Se6#
- 1...Sa6+!
- 1...Se6+
- 1.Qg2?
- 1...Bxg5
- 2.Qg3#
- 1...Bg3
- 2.Qxg3#
- 1...Sg4
- 2.Sh3#
- 1...Sd1
- 2.Sh3#
- 1...Sh1
- 2.Sh3#
- 1...Sfd3
- 2.Sh3#
- 1...Sh3
- 2.Sxh3#
- 1...Sfe4
- 2.Sh3#
- 1...Sb3
- 2.Se6#
- 1...Scd3
- 2.Se6#
- 1...Sa4
- 2.Se6#
- 1...Sce4
- 2.Se6#
- 1...Sa6
- 2.Se6#
- 1...Se6
- 2.Sxe6#
- 1...Sb7
- 2.Se6#
- 1...Sd7
- 2.Se6#
- 1...fxg2!
- 1...Bxg5
- 1.Qg4+?
- 1...Sxg4
- 2.Sh3#
- 1...Kxg4!
- 1...Sxg4
- 1.Kc7?
- Keys
- 1.h3!
- 1...Bxg5
- 2.Qh2#
- 1...Sxh3
- 2.Sxh3#
- 1...Bg3
- 2.Qc1#
- 1...Sg4
- 2.Qxg4#
- 1...Sd1
- 2.Qg4#
- 1...Sh1
- 2.Qg4#
- 1...Sfd3
- 2.Qg4#
- 1...Sfe4
- 2.Qg4#
- 1...Sb3
- 2.Se6#
- 1...Scd3
- 2.Se6#
- 1...Sa4
- 2.Se6#
- 1...Sce4
- 2.Se6#
- 1...Sa6
- 2.Se6#
- 1...Se6
- 2.Sxe6#
- 1...Sb7
- 2.Se6#
- 1...Sd7
- 2.Se6#
- 1...Bxg5
- 1.h3!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 7
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- B(d);N_GUARD::QAB1(A),XB(d)
- B(d);N_GUARD,XS(D)::QAB1(A)
- S(a);N_GUARD::S(D)
- S(a);N_GUARD::S(D),XS(a)
- S(e);N_GUARD::S(D)
- S(e);N_GUARD::S(D),XS(e)
- Tries
- Try
- K(F);P-FLIGHT
- Vars
- S(e);CHECK,N_GUARD::S(D),XS(e)
- B(d);N_GUARD,XS(D)::QAB1(A)
- B(d);N_GUARD::QAB1(A),XB(d)
- S(a);N_GUARD::S(D)
- S(a);N_GUARD::S(D),XS(a)
- S(e);N_GUARD::S(D)
- Refutation
- S(e);CHECK
- Try
- Q(A);
- Vars
- B(d);N_GUARD,XS(D)::QAB1(A)
- B(d);N_GUARD::QAB1(A),XB(d)
- S(a);N_GUARD::S(D)
- S(a);N_GUARD::S(D),XS(a)
- S(e);N_GUARD::S(D)
- S(e);N_GUARD::S(D),XS(e)
- Refutation
- P(b);XQ(A)
- Try
- Q(A);CHECK
- Vars
- S(a);SBLOCK,XQ(A)::S(D)
- Refutation
- K(c);P-FLIGHT,XQ(A)
- Try
- Actual
- P(B);
- Vars
- B(d);N_GUARD,SBLOCK,XS(D)::QAB(A)
- S(a);XP(B)::S(D),XS(a)
- B(d);SBLOCK::QAB(A)
- S(a);N_GUARD::QAR1(A),XS(a)
- S(a);N_GUARD::QAR1(A)
- S(e);N_GUARD::S(D)
- S(e);N_GUARD::S(D),XS(e)
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).