MESON Chess Problem Database
Problem Display
PID: 197750 (6Qn/p1pKPr2/PbP2P1p/p2k4/N6R/1p2pp2/2N1P2B/1B6 w - - 0 1)
Stewart, John
British Chess Magazine, 1918
#2
12 + 11
SOLUTION
- SOUND
- Sets
- 1...Bd4
- 2.Rxd4#
- 1...Bc5
- 2.Sc3#
- 1...Sg6
- 2.Qxf7#
- 1...bxc2
- 2.Ba2#
- 1...b2
- 2.Ba2#
- 1...fxe2
- 2.Qg2#
- 1...f2
- 2.Qg2#
- 1...h5
- 2.Qg5#
- 1...Bd4
- Tries
- 1.Sa1?
- 1...fxe2
- 2.Qg2#
- 1...Bc5
- 2.Sc3#
- 1...Sg6
- 2.Qxf7#
- 1...b2
- 2.Ba2#
- 1...f2
- 2.Qg2#
- 1...h5
- 2.Qg5#
- 1...Bd4!
- 1...fxe2
- 1.Se1?
- 1...fxe2
- 2.Qg2#
- 1...Bc5
- 2.Sc3#
- 1...Sg6
- 2.Qxf7#
- 1...b2
- 2.Ba2#
- 1...f2
- 2.Qg2#
- 1...h5
- 2.Qg5#
- 1...Bd4!
- 1...fxe2
- 1.Bd6?
- threat
- 2.Sc3#
- 1...Bd4
- 2.Rxd4#
- 1...cxd6!
- threat
- 1.Bxc7?
- 1...bxc2
- 2.Ba2#
- 1...fxe2
- 2.Qg2#
- 1...Bd4
- 2.Rxd4#
- 1...Bc5
- 2.Sc3#
- 1...Sg6
- 2.Qxf7#
- 1...b2
- 2.Ba2#
- 1...f2
- 2.Qg2#
- 1...h5
- 2.Qg5#
- 1...Bxc7!
- 1...bxc2
- 1.Rb4?
- 1...bxc2
- 2.Ba2#
- 1...fxe2
- 2.Qg2#
- 1...Bd4
- 2.Rxd4#
- 1...Bc5
- 2.Sc3#
- 1...Sg6
- 2.Qxf7#
- 1...b2
- 2.Ba2#
- 1...f2
- 2.Qg2#
- 1...h5
- 2.Qg5#
- 1...axb4!
- 1...bxc2
- 1.Rh5+?
- 1...Ke4
- 2.Sc3#
- 2.Re5#
- 2.Qg4#
- 1...Kc4!
- 1...Ke4
- 1.Qg3?
- threat
- 2.Qe5#
- 2.Qxf3#
- 1...Rxf6
- 2.Qe5#
- 1...fxe2
- 2.Qe5#
- 2.Qg2#
- 2.Qf3#
- 1...Bd4
- 2.Rxd4#
- 1...f2
- 2.Qe5#
- 2.Qg2#
- 2.Qf3#
- 1...Sg6
- 2.Qxf3#
- 1...Rxe7+!
- threat
- 1.Qg4?
- threat
- 2.Rh5#
- 2.Qxf3#
- 2.Qf5#
- 2.Qh5#
- 2.Qe6#
- 2.Qc4#
- 2.Qe4#
- 1...Rxf6
- 2.Qc4#
- 2.Qe4#
- 1...fxe2
- 2.Rh5#
- 2.Qf3#
- 2.Qf5#
- 2.Qh5#
- 2.Qe6#
- 2.Qg2#
- 2.Qc4#
- 2.Qe4#
- 1...Bd4
- 2.Qe6#
- 2.Qxd4#
- 1...f2
- 2.Rh5#
- 2.Qf3#
- 2.Qf5#
- 2.Qh5#
- 2.Qe6#
- 2.Qg2#
- 2.Qc4#
- 2.Qe4#
- 1...Rg7
- 2.Qxf3#
- 2.Qf5#
- 2.Qe6#
- 2.Qc4#
- 2.Qe4#
- 1...Sg6
- 2.Qxf3#
- 2.Qe6#
- 2.Qc4#
- 2.Qe4#
- 1...h5
- 2.Rxh5#
- 2.Qxf3#
- 2.Qf5#
- 2.Qxh5#
- 2.Qe6#
- 2.Qc4#
- 2.Qe4#
- 2.Qg5#
- 1...Rxe7+!
- threat
- 1.exf3?
- 1...bxc2
- 2.Ba2#
- 1...Bd4
- 2.Rxd4#
- 1...Bc5
- 2.Sc3#
- 1...Sg6
- 2.Qxf7#
- 1...b2
- 2.Ba2#
- 1...h5
- 2.Qg5#
- 1...e2!
- 1...bxc2
- 1.Sa1?
- Keys
- 1.Sa3!
- 1...fxe2
- 2.Qg2#
- 1...Bd4
- 2.Be4#
- 1...Bc5
- 2.Sc3#
- 1...Sg6
- 2.Qxf7#
- 1...b2
- 2.Ba2#
- 1...f2
- 2.Qg2#
- 1...h5
- 2.Qg5#
- 1...fxe2
- 1.Sa3!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 1
- ADDED MATES = 0
- REMOVED MATES = 1
- Sets
- B(f);N_GUARD::R1(F),XB(f)
- B(f);SBLOCK::S(E)
- S(k);N_GUARD::QAB(L),XR(j)
- P(a);OGATEB,XS(B)::B(A)
- P(a);OGATEB::B(A)
- P(c);OGATEB,XP(C)::QAB(L)
- P(c);OGATEB::QAB(L)
- P(g);N_GUARD::QAR(L)
- Tries
- Try
- S(B);
- Vars
- P(c);OGATEB,XP(C)::QAB(L)
- B(f);SBLOCK::S(E)
- S(k);N_GUARD::QAB(L),XR(j)
- P(a);OGATEB::B(A)
- P(c);OGATEB::QAB(L)
- P(g);N_GUARD::QAR(L)
- Refutation
- B(f);
- Try
- S(B);
- Vars
- P(c);OGATEB,XP(C)::QAB(L)
- B(f);SBLOCK::S(E)
- S(k);N_GUARD::QAB(L),XR(j)
- P(a);OGATEB::B(A)
- P(c);OGATEB::QAB(L)
- P(g);N_GUARD::QAR(L)
- Refutation
- B(f);
- Try
- B(D);
- Threat
- S(E)
- Vars
- B(f);N_GUARD::R1(F),XB(f)
- Refutation
- P(i);XB(D)
- Try
- B(D);XP(i)
- Vars
- P(a);OGATEB,XS(B)::B(A)
- P(c);OGATEB,XP(C)::QAB(L)
- B(f);N_GUARD::R1(F),XB(f)
- B(f);SBLOCK::S(E)
- S(k);N_GUARD::QAB(L),XR(j)
- P(a);OGATEB::B(A)
- P(c);OGATEB::QAB(L)
- P(g);N_GUARD::QAR(L)
- Refutation
- B(f);XB(D)
- Try
- R(F);
- Vars
- P(a);OGATEB,XS(B)::B(A)
- P(c);OGATEB,XP(C)::QAB(L)
- B(f);N_GUARD::R1(F),XB(f)
- B(f);SBLOCK::S(E)
- S(k);N_GUARD::QAB(L),XR(j)
- P(a);OGATEB::B(A)
- P(c);OGATEB::QAB(L)
- P(g);N_GUARD::QAR(L)
- Refutation
- P(d);XR(F)
- Try
- R(F);CHECK
- Refutation
- K(e);S_FLIGHT
- Try
- Q(L);N_PINR(j)
- Threat
- DUALS(2)
- Vars
- R(j);N_PINP(K),XP(I)::QAR1(L)
- B(f);N_GUARD::R1(F),XB(f)
- S(k);::QAB(L),XP(c)
- Refutation
- R(j);CHECK,XP(K)
- Try
- Q(L);N_PINR(j)
- Threat
- DUALS(7)
- Refutation
- R(j);CHECK,XP(K)
- Try
- P(C);XP(c)
- Vars
- P(a);OGATEB,XS(B)::B(A)
- B(f);N_GUARD::R1(F),XB(f)
- B(f);SBLOCK::S(E)
- S(k);N_GUARD::QAB(L),XR(j)
- P(a);OGATEB::B(A)
- P(g);N_GUARD::QAR(L)
- Refutation
- P(b);
- Try
- Actual
- S(B);
- Vars
- P(c);OGATEB,XP(C)::QAB(L)
- B(f);SBLOCK::B(A)
- B(f);SBLOCK::S(E)
- S(k);N_GUARD::QAB(L),XR(j)
- P(a);OGATEB::B(A)
- P(c);OGATEB::QAB(L)
- P(g);N_GUARD::QAR(L)
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).