MESON Chess Problem Database
Problem Display
PID: 22097 (1B1bKN2/2r1p3/3r4/1pP1k1P1/1N4Q1/2P5/8/8 w - - 0 1)
Niemeijer, Meindert
4th Prize, Good Companions, 1924
#2
8 + 6
SOLUTION
- SOUND
- Sets
- 1...Rd1
- 2.Sg6#
- 1...Rd2
- 2.Sg6#
- 1...Rd3
- 2.Sg6#
- 1...Rd4
- 2.Sg6#
- 2.cxd4#
- 1...Rd5
- 2.Sc6#
- 2.Sg6#
- 1...Ra6
- 2.Sd7#
- 1...Rb6
- 2.Sd7#
- 1...Rdc6
- 2.Sd7#
- 1...Re6
- 2.Sd7#
- 1...Rf6
- 2.Sd7#
- 1...Rg6
- 2.Sxg6#
- 2.Sd7#
- 1...Rh6
- 2.Sd7#
- 1...Rdd7
- 2.Sg6#
- 2.Sxd7#
- 1...Rxc5
- 2.Sg6#
- 2.Sd7#
- 1...Rcc6
- 2.Sg6#
- 2.Sd7#
- 1...Ra7
- 2.Sg6#
- 1...Rb7
- 2.Sg6#
- 1...Rcd7
- 2.Sg6#
- 2.Sxd7#
- 1...Rc8
- 2.Sg6#
- 2.Sd7#
- 1...e6
- 2.Sg6#
- 1...Rd1
- Tries
- 1.c4?
- 1...Rxc5
- 2.Sd3#
- 2.Sg6#
- 2.Sd7#
- 1...Rd1
- 2.Sc6#
- 2.Sg6#
- 1...Rd2
- 2.Sc6#
- 2.Sg6#
- 1...Rd3
- 2.Sxd3#
- 2.Sc6#
- 2.Sg6#
- 1...Rd4
- 2.Sc6#
- 2.Sg6#
- 1...Rd5
- 2.Sc6#
- 2.Sg6#
- 1...Ra6
- 2.Sd3#
- 2.Sd7#
- 1...Rb6
- 2.Sd3#
- 2.Sd7#
- 1...Rdc6
- 2.Sd3#
- 2.Sxc6#
- 2.Sd7#
- 1...Re6
- 2.Sd3#
- 2.Sd7#
- 1...Rf6
- 2.Sd3#
- 2.Sd7#
- 1...Rg6
- 2.Sd3#
- 2.Sxg6#
- 2.Sd7#
- 1...Rh6
- 2.Sd3#
- 2.Sd7#
- 1...Rdd7
- 2.Sc6#
- 2.Sg6#
- 2.Sxd7#
- 1...Rcc6
- 2.Sd3#
- 2.Sxc6#
- 2.Sg6#
- 2.Sd7#
- 1...Ra7
- 2.Sd3#
- 2.Sc6#
- 2.Sg6#
- 1...Rb7
- 2.Sd3#
- 2.Sc6#
- 2.Sg6#
- 1...Rcd7
- 2.Sd3#
- 2.Sc6#
- 2.Sg6#
- 2.Sxd7#
- 1...Rc8
- 2.Sd3#
- 2.Sg6#
- 2.Sd7#
- 1...e6
- 2.Sg6#
- 1...bxc4!
- 1...Rxc5
- 1.cxd6?
- 1...Kxd6
- 2.Qd4#
- 1...Rxc3
- 2.Sg6#
- 2.Sd7#
- 1...exd6
- 2.Sg6#
- 1...Rc4
- 2.Sg6#
- 2.Sd7#
- 1...Rc5
- 2.Sg6#
- 2.Sd7#
- 1...Rc6
- 2.Sg6#
- 2.Sd7#
- 1...Ra7
- 2.Sg6#
- 1...Rb7
- 2.Sg6#
- 1...Rd7
- 2.Sg6#
- 2.Sxd7#
- 1...Rc8
- 2.Sg6#
- 2.Sd7#
- 1...e6!
- 1...Kxd6
- 1.c4?
- Keys
- 1.Qf3!
- 1...Rxc5
- 2.Sd3#
- 1...Rd1
- 2.Sc6#
- 1...Rd2
- 2.Sc6#
- 1...Rd3
- 2.Sxd3#
- 2.Sc6#
- 1...Rd4
- 2.Sc6#
- 1...Rd5
- 2.Sc6#
- 1...Ra6
- 2.Sd3#
- 1...Rb6
- 2.Sd3#
- 1...Rdc6
- 2.Sd3#
- 2.Sxc6#
- 1...Re6
- 2.Sd3#
- 2.Sd7#
- 1...Rf6
- 2.Sd3#
- 1...Rg6
- 2.Sd3#
- 1...Rh6
- 2.Sd3#
- 1...Rdd7
- 2.Sc6#
- 1...Rcc6
- 2.Sd3#
- 2.Sxc6#
- 1...Ra7
- 2.Sd3#
- 2.Sc6#
- 1...Rb7
- 2.Sd3#
- 2.Sc6#
- 1...Rcd7
- 2.Sd3#
- 2.Sc6#
- 1...Rc8
- 2.Sd3#
- 1...e6
- 2.Sg6#
- 1...Rxc5
- 1.Qf3!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 6
- ADDED MATES = 6
- REMOVED MATES = 5
- Sets
- R(c);N_GUARD,P_SPINR(d)::S(H)
- R(d);P_SPINR(c)::S(H)
- P(e);S_CUTR(c)::S(H)
- Tries
- Try
- P(A);
- Vars
- P(e);S_CUTR(c)::S(H)
- Refutation
- P(a);XP(A)
- Try
- P(D);XR(c)
- Vars
- K(b);P_SPINR(d),S_FLIGHT,XP(D)::QAR2(C)
- P(e);SBLOCK,XP(D)::S(H)
- R(d);::S(H)
- Refutation
- P(e);
- Try
- Actual
- Q(C);
- Vars
- R(d);P_SPINR(c),XP(D)::S(B)
- R(c);N_GUARD,P_SPINR(d)::S(B)
- R(d);P_SPINR(c)::S(B)
- P(e);SBLOCK,S_CUTR(c)::S(H)
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).