MESON Chess Problem Database
Problem Display
PID: 21257 (4n3/4Kb2/4p3/2B1kp1p/1p5N/1Bb1Pp2/5N1n/1Q6 w - - 0 1)
Warton, Thomas Joseph
Reading Observer, 1917
#2
7 + 10
SOLUTION
- SOUND
- Sets
- 1...Ba1
- 2.Qxa1#
- 1...Be1
- 2.Bd4#
- 1...Bb2
- 2.Qxb2#
- 1...Bd2
- 2.Bd4#
- 1...Bd4
- 2.Bxd4#
- 1...Bg6
- 2.Sxg6#
- 1...Bg8
- 2.Sg6#
- 1...Sf1
- 2.Sxf3#
- 1...Sg4
- 2.Sxf3#
- 1...Sd6
- 2.Bxd6#
- 1...Sf6
- 2.Bd6#
- 1...Sc7
- 2.Bd6#
- 1...Sg7
- 2.Bd6#
- 1...f4
- 2.Qe4#
- 1...Ba1
- Tries
- 1.Sxf5?
- threat
- 2.Qe4#
- 1...Sd6
- 2.Bxd6#
- 1...Sf6
- 2.Bd6#
- 1...exf5!
- threat
- 1.Ba2?
- 1...Ba1
- 2.Qxa1#
- 1...Be1
- 2.Bd4#
- 1...Bb2
- 2.Qxb2#
- 1...Bd2
- 2.Bd4#
- 1...Bd4
- 2.Bxd4#
- 1...Bg6
- 2.Sxg6#
- 1...Bg8
- 2.Sg6#
- 1...Sf1
- 2.Sxf3#
- 1...Sg4
- 2.Sxf3#
- 1...Sd6
- 2.Bxd6#
- 1...Sf6
- 2.Bd6#
- 1...Sc7
- 2.Bd6#
- 1...Sg7
- 2.Bd6#
- 1...f4
- 2.Qe4#
- 1...b3!
- 1...Ba1
- 1.Bc4?
- 1...Ba1
- 2.Qxa1#
- 1...Be1
- 2.Bd4#
- 1...Bb2
- 2.Qxb2#
- 1...Bd2
- 2.Bd4#
- 1...Bd4
- 2.Bxd4#
- 1...Bg6
- 2.Sxg6#
- 1...Bg8
- 2.Sg6#
- 1...Sf1
- 2.Sxf3#
- 1...Sg4
- 2.Sxf3#
- 1...Sd6
- 2.Bxd6#
- 1...Sf6
- 2.Bd6#
- 1...Sc7
- 2.Bd6#
- 1...Sg7
- 2.Bd6#
- 1...f4
- 2.Qe4#
- 1...b3!
- 1...Ba1
- 1.Bxe6?
- threat
- 2.Qxf5#
- 1...Bg6
- 2.Sxg6#
- 1...Sd6
- 2.Bxd6#
- 1...Sg7
- 2.Bd6#
- 1...f4
- 2.Qe4#
- 2.Qf5#
- 1...Bxe6!
- threat
- 1.Bb6?
- 1...Ba1
- 2.Qxa1#
- 1...Be1
- 2.Bd4#
- 1...Bb2
- 2.Qxb2#
- 1...Bd2
- 2.Bd4#
- 1...Bd4
- 2.Bxd4#
- 1...Bg6
- 2.Sxg6#
- 1...Bg8
- 2.Sg6#
- 1...Sf1
- 2.Sxf3#
- 1...Sg4
- 2.Sxf3#
- 1...Sf6
- 2.Bc7#
- 1...Sc7
- 2.Bxc7#
- 1...Sg7
- 2.Bc7#
- 1...f4
- 2.Qe4#
- 1...Sd6!
- 1...Ba1
- 1.Qa2?
- 1...Ba1
- 2.Qxa1#
- 1...Be1
- 2.Bd4#
- 1...Bb2
- 2.Qxb2#
- 1...Bd2
- 2.Bd4#
- 1...Bd4
- 2.Bxd4#
- 1...Bg6
- 2.Sxg6#
- 1...Bg8
- 2.Sg6#
- 1...Sf1
- 2.Sxf3#
- 1...Sg4
- 2.Sxf3#
- 1...Sd6
- 2.Bxd6#
- 1...Sf6
- 2.Bd6#
- 1...Sc7
- 2.Bd6#
- 1...Sg7
- 2.Bd6#
- 1...f4!
- 1...Ba1
- 1.Qc2?
- 1...Be1
- 2.Bd4#
- 1...Bb2
- 2.Qxb2#
- 1...Bd2
- 2.Bd4#
- 1...Bd4
- 2.Bxd4#
- 1...Bg6
- 2.Sxg6#
- 1...Bg8
- 2.Sg6#
- 1...Sf1
- 2.Sxf3#
- 1...Sg4
- 2.Sxf3#
- 1...Sd6
- 2.Bxd6#
- 1...Sf6
- 2.Bd6#
- 1...Sc7
- 2.Bd6#
- 1...Sg7
- 2.Bd6#
- 1...f4
- 2.Qe4#
- 1...Ba1!
- 1...Be1
- 1.Qg1?
- 1...Ba1
- 2.Qxa1#
- 1...Be1
- 2.Bd4#
- 1...Bd2
- 2.Bd4#
- 1...Bd4
- 2.Bxd4#
- 1...Bg6
- 2.Sxg6#
- 1...Bg8
- 2.Sg6#
- 1...Sf1
- 2.Sxf3#
- 1...Sg4
- 2.Sxf3#
- 1...Sd6
- 2.Bxd6#
- 2.Qg7#
- 1...Sf6
- 2.Bd6#
- 1...Sc7
- 2.Bd6#
- 2.Qg7#
- 1...Sg7
- 2.Bd6#
- 2.Qxg7#
- 1...f4
- 2.Qg5#
- 1...Bb2!
- 1...Ba1
- 1.Sxf5?
- Keys
- 1.Qc1!
- 1...Ba1
- 2.Qxa1#
- 1...Be1
- 2.Bd4#
- 1...Bb2
- 2.Qxb2#
- 1...Bd2
- 2.Bd4#
- 1...Bd4
- 2.Bxd4#
- 2.exd4#
- 1...Bg6
- 2.Sxg6#
- 1...Bg8
- 2.Sg6#
- 1...Sf1
- 2.Sxf3#
- 1...Sg4
- 2.Sxf3#
- 1...Sd6
- 2.Bxd6#
- 1...Sf6
- 2.Bd6#
- 1...Sc7
- 2.Bd6#
- 1...Sg7
- 2.Bd6#
- 1...f4
- 2.exf4#
- 1...Ba1
- 1.Qc1!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 1
- ADDED MATES = 0
- REMOVED MATES = 1
- Sets
- B(b);OGATEB::QAB(A),XB(b)
- B(b);N_GUARD::B(F)
- B(b);N_GUARD::B(F),XB(b)
- B(i);N_GUARD::S(E),XB(i)
- B(i);N_GUARD::S(E)
- S(a);N_GUARD::S(E),XP(c)
- S(j);N_GUARD::B(F),XS(j)
- S(j);N_GUARD::B(F)
- P(f);N_GUARD::QAR1(A)
- Tries
- Try
- S(E);XP(f)
- Threat
- QAR1(A)
- Vars
- S(j);N_GUARD::B(F),XS(j)
- S(j);N_GUARD::B(F)
- Refutation
- P(h);XS(E)
- Try
- B(C);
- Vars
- B(b);OGATEB::QAB(A),XB(b)
- B(b);N_GUARD::B(F)
- B(b);N_GUARD::B(F),XB(b)
- B(i);N_GUARD::S(E),XB(i)
- B(i);N_GUARD::S(E)
- S(a);N_GUARD::S(E),XP(c)
- S(j);N_GUARD::B(F),XS(j)
- S(j);N_GUARD::B(F)
- P(f);N_GUARD::QAR1(A)
- Refutation
- P(d);
- Try
- B(C);
- Vars
- B(b);OGATEB::QAB(A),XB(b)
- B(b);N_GUARD::B(F)
- B(b);N_GUARD::B(F),XB(b)
- B(i);N_GUARD::S(E),XB(i)
- B(i);N_GUARD::S(E)
- S(a);N_GUARD::S(E),XP(c)
- S(j);N_GUARD::B(F),XS(j)
- S(j);N_GUARD::B(F)
- P(f);N_GUARD::QAR1(A)
- Refutation
- P(d);
- Try
- B(C);XP(h)
- Threat
- QAR1(A),XP(f)
- Vars
- B(i);N_GUARD::S(E),XB(i)
- S(j);N_GUARD::B(F),XS(j)
- S(j);N_GUARD::B(F)
- Refutation
- B(i);XB(C)
- Try
- B(F);
- Vars
- B(b);OGATEB::QAB(A),XB(b)
- B(b);N_GUARD::B(F)
- B(b);N_GUARD::B(F),XB(b)
- B(i);N_GUARD::S(E),XB(i)
- B(i);N_GUARD::S(E)
- S(a);N_GUARD::S(E),XP(c)
- S(j);N_GUARD::B(F)
- S(j);N_GUARD::B(F),XS(j)
- P(f);N_GUARD::QAR1(A)
- Refutation
- S(j);
- Try
- Q(A);
- Vars
- B(b);OGATEB::QAB(A),XB(b)
- B(b);N_GUARD::B(F)
- B(b);N_GUARD::B(F),XB(b)
- B(i);N_GUARD::S(E),XB(i)
- B(i);N_GUARD::S(E)
- S(a);N_GUARD::S(E),XP(c)
- S(j);N_GUARD::B(F),XS(j)
- S(j);N_GUARD::B(F)
- Refutation
- P(f);
- Try
- Q(A);
- Vars
- B(b);N_GUARD::B(F)
- B(b);OGATEB::QAB(A),XB(b)
- B(b);N_GUARD::B(F),XB(b)
- B(i);N_GUARD::S(E),XB(i)
- B(i);N_GUARD::S(E)
- S(a);N_GUARD::S(E),XP(c)
- S(j);N_GUARD::B(F),XS(j)
- S(j);N_GUARD::B(F)
- P(f);N_GUARD::QAR1(A)
- Refutation
- B(b);
- Try
- Q(A);
- Vars
- B(b);OGATEB::QAB(A),XB(b)
- B(b);N_GUARD::B(F)
- B(b);N_GUARD::B(F),XB(b)
- B(i);N_GUARD::S(E),XB(i)
- B(i);N_GUARD::S(E)
- S(a);N_GUARD::S(E),XP(c)
- S(j);N_GUARD::B(F)
- P(f);OGATEB::QAR2(A)
- Refutation
- B(b);
- Try
- Actual
- Q(A);
- Vars
- B(b);OGATEB::QAB(A),XB(b)
- B(b);N_GUARD::B(F)
- B(i);N_GUARD::S(E),XB(i)
- B(i);N_GUARD::S(E)
- S(a);N_GUARD::S(E),XP(c)
- S(j);N_GUARD::B(F),XS(j)
- S(j);N_GUARD::B(F)
- P(f);OGATE::P(D),XP(f)
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).