MESON Chess Problem Database
Problem Display
PID: 60694 (qn2B3/pr1r4/p5Q1/PkNN4/RP6/1P2p3/4n2K/8 w - - 0 1)
Lindeberg, Martin F
Schackvarlden, 1929
#2
9 + 9
SOLUTION
- SOUND
- Sets
- 1...Rb6
- 2.Sc7#
- 1...Rc7
- 2.Sxc7#
- 1...Sc1
- 2.Sc3#
- 1...Sg1
- 2.Sc3#
- 1...Sc3
- 2.Sxc3#
- 1...Sg3
- 2.Sc3#
- 1...Sd4
- 2.Sc3#
- 1...Sf4
- 2.Sc3#
- 1...Sc6
- 2.Qd3#
- 1...Rb6
- Tries
- 1.Sd3?
- 1...Rb6
- 2.Sc7#
- 1...Rc7
- 2.Sxc7#
- 1...Sc1
- 2.Sc3#
- 1...Sg1
- 2.Sc3#
- 1...Sc3
- 2.Sxc3#
- 1...Sg3
- 2.Sc3#
- 1...Sd4
- 2.Sc3#
- 1...Sf4
- 2.Sc3#
- 1...Sc6!
- 1...Rb6
- 1.Se4?
- 1...Rb6
- 2.Sc7#
- 1...Rc7
- 2.Sxc7#
- 1...Sc1
- 2.Sec3#
- 2.Sdc3#
- 1...Sg1
- 2.Sec3#
- 2.Sdc3#
- 1...Sc3
- 2.Sexc3#
- 2.Sdxc3#
- 1...Sg3
- 2.Sec3#
- 2.Sdc3#
- 1...Sd4
- 2.Sec3#
- 2.Sdc3#
- 1...Sf4
- 2.Sec3#
- 2.Sdc3#
- 1...Sc6!
- 1...Rb6
- 1.Sxa6?
- 1...Rb6
- 2.Sdc7#
- 2.Sac7#
- 1...Sc6
- 2.Qd3#
- 1...Rc7
- 2.Sdxc7#
- 2.Saxc7#
- 1...Sc1
- 2.Sc3#
- 1...Sg1
- 2.Sc3#
- 1...Sc3
- 2.Sxc3#
- 1...Sg3
- 2.Sc3#
- 1...Sd4
- 2.Sc3#
- 1...Sf4
- 2.Sc3#
- 1...Sxa6!
- 1...Rb6
- 1.Sxb7?
- threat
- 2.Sc7#
- 1...Sc6
- 2.Qd3#
- 1...Qxb7!
- threat
- 1.Sxd7?
- 1...Rxd7
- 2.Sc7#
- 1...Rb6
- 2.Sc7#
- 1...Rc7
- 2.Sxc7#
- 1...Sc1
- 2.Sc3#
- 1...Sg1
- 2.Sc3#
- 1...Sc3
- 2.Sxc3#
- 1...Sg3
- 2.Sc3#
- 1...Sd4
- 2.Sc3#
- 1...Sf4
- 2.Sc3#
- 1...Sc6
- 2.Qd3#
- 1...Sxd7!
- 1...Rxd7
- 1.Bxd7+?
- 1...Sc6
- 2.Bxc6#
- 2.Qd3#
- 2.Qxc6#
- 1...Sxd7
- 2.Qxa6#
- 1...Rxd7!
- 1...Sc6
- 1.Qe4?
- 1...Rb6
- 2.Sc7#
- 1...Rc7
- 2.Sxc7#
- 1...Sc1
- 2.Sc3#
- 1...Sg1
- 2.Sc3#
- 1...Sc3
- 2.Sxc3#
- 1...Sg3
- 2.Sc3#
- 1...Sd4
- 2.Sc3#
- 1...Sf4
- 2.Sc3#
- 1...Sc6
- 2.Qd3#
- 2.Qc4#
- 1...Kc6!
- 1...Rb6
- 1.Qg2?
- 1...Rb6
- 2.Sc7#
- 1...Rc7
- 2.Sxc7#
- 1...Sc1
- 2.Sc3#
- 1...Sg1
- 2.Sc3#
- 1...Sc3
- 2.Sxc3#
- 1...Sg3
- 2.Sc3#
- 1...Sd4
- 2.Sc3#
- 1...Sf4
- 2.Sc3#
- 1...Sc6
- 2.Qxe2#
- 1...Kc6!
- 1...Rb6
- 1.Qd6?
- 1...Rb6
- 2.Sc7#
- 1...Rc7
- 2.Sxc7#
- 1...Sc1
- 2.Sc3#
- 1...Sg1
- 2.Sc3#
- 1...Sc3
- 2.Sxc3#
- 1...Sg3
- 2.Sc3#
- 1...Sd4
- 2.Sc3#
- 1...Sf4
- 2.Sc3#
- 1...Sc6!
- 1...Rb6
- 1.Qe6?
- 1...Rb6
- 2.Sc7#
- 1...Rc7
- 2.Sxc7#
- 1...Sc1
- 2.Sc3#
- 1...Sg1
- 2.Sc3#
- 1...Sc3
- 2.Sxc3#
- 1...Sg3
- 2.Sc3#
- 1...Sd4
- 2.Sc3#
- 1...Sf4
- 2.Sc3#
- 1...Sc6!
- 1...Rb6
- 1.Qf6?
- 1...Rb6
- 2.Sc7#
- 1...Rc7
- 2.Sxc7#
- 1...Sc1
- 2.Sc3#
- 1...Sg1
- 2.Sc3#
- 1...Sc3
- 2.Sxc3#
- 1...Sg3
- 2.Sc3#
- 1...Sd4
- 2.Sc3#
- 1...Sf4
- 2.Sc3#
- 1...Sc6!
- 1...Rb6
- 1.Qh6?
- 1...Rb6
- 2.Sc7#
- 1...Rc7
- 2.Sxc7#
- 1...Sc1
- 2.Sc3#
- 1...Sg1
- 2.Sc3#
- 1...Sc3
- 2.Sxc3#
- 1...Sg3
- 2.Sc3#
- 1...Sd4
- 2.Sc3#
- 1...Sf4
- 2.Sc3#
- 1...Sc6!
- 1...Rb6
- 1.Sd3?
- Keys
- 1.Se6!
- 1...Kc6
- 2.Sec7#
- 1...Rb6
- 2.Sec7#
- 1...Rc7
- 2.Sexc7#
- 1...Sc1
- 2.Sd4#
- 1...Sg1
- 2.Sd4#
- 1...Sc3
- 2.Sd4#
- 1...Sg3
- 2.Sd4#
- 1...Sd4
- 2.Sxd4#
- 1...Sf4
- 2.Sd4#
- 1...Sc6
- 2.Qd3#
- 1...Kc6
- 1.Se6!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 6
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- R(f);N_GUARD::S(G)
- R(f);N_GUARD::S(G),XR(f)
- S(a);N_GUARD::S(G)
- S(a);N_GUARD::S(G),XS(a)
- S(i);N_SPINR(g),SBLOCK::QAB(H)
- Tries
- Try
- S(F);
- Vars
- R(f);N_GUARD::S(G)
- R(f);N_GUARD::S(G),XR(f)
- S(a);N_GUARD::S(G)
- S(a);N_GUARD::S(G),XS(a)
- Refutation
- S(i);N_SPINR(g)
- Try
- S(F);
- Vars
- R(f);N_GUARD::S(G)
- R(f);N_GUARD::S(G),XR(f)
- Refutation
- S(i);N_SPINR(g)
- Try
- S(F);XP(d)
- Vars
- S(i);N_SPINR(g),SBLOCK::QAB(H)
- S(a);N_GUARD::S(G)
- S(a);N_GUARD::S(G),XS(a)
- Refutation
- S(i);XS(F)
- Try
- S(F);XR(f)
- Threat
- S(G)
- Vars
- S(i);N_SPINR(g),SBLOCK::QAB(H)
- Refutation
- Q(h);XS(F)
- Try
- S(F);XR(g)
- Vars
- R(f);N_GUARD,P_SPINR(f),XS(F)::S(G)
- R(f);N_GUARD::S(G)
- R(f);N_GUARD::S(G),XR(f)
- S(a);N_GUARD::S(G)
- S(a);N_GUARD::S(G),XS(a)
- S(i);SBLOCK::QAB(H)
- Refutation
- S(i);P_SPINS(i),XS(F)
- Try
- B(I);CHECK,XR(g)
- Vars
- S(i);XB(I)::QAB1(H),XP(d)
- Refutation
- R(f);XB(I)
- Try
- Q(H);
- Vars
- R(f);N_GUARD::S(G)
- R(f);N_GUARD::S(G),XR(f)
- S(a);N_GUARD::S(G)
- S(a);N_GUARD::S(G),XS(a)
- Refutation
- K(c);S_FLIGHT
- Try
- Q(H);
- Vars
- R(f);N_GUARD::S(G)
- R(f);N_GUARD::S(G),XR(f)
- S(a);N_GUARD::S(G)
- S(a);N_GUARD::S(G),XS(a)
- S(i);N_SPINR(g),SBLOCK::QAB(H),XS(a)
- Refutation
- K(c);S_FLIGHT
- Try
- Q(H);
- Vars
- R(f);N_GUARD::S(G)
- R(f);N_GUARD::S(G),XR(f)
- S(a);N_GUARD::S(G)
- S(a);N_GUARD::S(G),XS(a)
- Refutation
- S(i);N_SPINR(g)
- Try
- Q(H);
- Vars
- R(f);N_GUARD::S(G)
- R(f);N_GUARD::S(G),XR(f)
- S(a);N_GUARD::S(G)
- S(a);N_GUARD::S(G),XS(a)
- Refutation
- S(i);N_SPINR(g)
- Try
- Q(H);
- Vars
- R(f);N_GUARD::S(G)
- R(f);N_GUARD::S(G),XR(f)
- S(a);N_GUARD::S(G)
- S(a);N_GUARD::S(G),XS(a)
- Refutation
- S(i);N_SPINR(g)
- Try
- Q(H);
- Vars
- R(f);N_GUARD::S(G)
- R(f);N_GUARD::S(G),XR(f)
- S(a);N_GUARD::S(G)
- S(a);N_GUARD::S(G),XS(a)
- Refutation
- S(i);N_SPINR(g)
- Try
- Actual
- S(F);
- Vars
- K(c);S_FLIGHT::QAR(H)+S(F)
- R(f);N_GUARD::S(F)
- R(f);N_GUARD::S(F),XR(f)
- S(a);N_GUARD::S(F)
- S(a);N_GUARD::S(F),XS(a)
- S(i);N_SPINR(g),SBLOCK::QAB(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).