MESON Chess Problem Database
Problem Display
PID: 195103 (8/1p3QPq/2b4p/1BR1N3/4k2r/4P3/3P1n1n/1K6 w - - 0 1)
Rothstein, Louis
Brisbane Courier, 1918
#2
8 + 8
| 6490 | yacpdb | 2019 |
SOLUTION
- SOUND
- Sets
- 1...Qf5
- 2.Qc4#
- 1...Qg6
- 2.Qxg6#
- 1...Qg8
- 2.Qg6#
- 1...Qh8
- 2.Qg6#
- 1...Rh3
- 2.Qf4#
- 1...Rf4
- 2.Qxf4#
- 1...Rh5
- 2.Qf4#
- 1...Sd1
- 2.Bd3#
- 1...Sh1
- 2.Bd3#
- 1...Sd3
- 2.Bxd3#
- 1...Sh3
- 2.Bd3#
- 1...Sfg4
- 2.Bd3#
- 2.Qf4#
- 1...Sf1
- 2.Qf3#
- 1...Sf3
- 2.Qxf3#
- 1...Shg4
- 2.Qf3#
- 2.Qf4#
- 1...b6
- 2.Bxc6#
- 1...Qf5
- Tries
- 1.Sd3?
- threat
- 2.Sxf2#
- 2.Re5#
- 1...Qxg7
- 2.Sxf2#
- 2.Qf5#
- 1...Bxb5
- 2.Sxf2#
- 2.Qd5#
- 1...Qf5
- 2.Qxf5#
- 1...Rf4
- 2.Qxf4#
- 1...Rh5
- 2.Sxf2#
- 2.Qf4#
- 1...Bd5
- 2.Qxd5#
- 1...Sd1
- 2.Re5#
- 1...Sh1
- 2.Re5#
- 1...Sh3
- 2.Re5#
- 1...Sfg4
- 2.Qf4#
- 1...Sf3
- 2.Sxf2#
- 1...Shg4
- 2.Qf4#
- 1...Sxd3!
- threat
- 1.Sf3?
- threat
- 2.Re5#
- 1...Qxg7
- 2.Qf5#
- 1...Bxb5
- 2.Qd5#
- 1...Qf5
- 2.Qxf5#
- 1...Rf4
- 2.Qxf4#
- 1...Rh5
- 2.Qf4#
- 1...Bd5
- 2.Qxd5#
- 1...Sd3
- 2.Rc4#
- 1...Sfg4
- 2.Qf4#
- 1...Shg4
- 2.Qf4#
- 1...Sxf3!
- threat
- 1.Sg4?
- threat
- 2.Sxf2#
- 2.Re5#
- 2.Qf4#
- 1...Qxg7
- 2.Sxf2#
- 2.Qf4#
- 2.Qf5#
- 1...Bxb5
- 2.Sxf2#
- 2.Qd5#
- 1...Sfxg4
- 2.Qf4#
- 1...Shxg4
- 2.Qf4#
- 1...Qf5
- 2.Qxf5#
- 1...Rh5
- 2.Sxf2#
- 2.Qf4#
- 1...Bd5
- 2.Qxd5#
- 2.Qf4#
- 1...Sd1
- 2.Re5#
- 2.Qf4#
- 2.d3#
- 1...Sh1
- 2.Re5#
- 2.Qf4#
- 2.d3#
- 1...Sd3
- 2.Rc4#
- 1...Sh3
- 2.Re5#
- 2.d3#
- 1...Sf3
- 2.Sxf2#
- 2.Sf6#
- 2.Qf4#
- 1...Rxg4!
- threat
- 1.Sxc6?
- threat
- 2.Re5#
- 2.Qd5#
- 1...Qxg7
- 2.Qd5#
- 2.Qf5#
- 1...Qf5
- 2.Qxf5#
- 1...Rf4
- 2.Qd5#
- 2.Qxf4#
- 1...Qg8
- 2.Re5#
- 2.Qf5#
- 1...Rh5
- 2.Qf4#
- 1...Sd3
- 2.Rc4#
- 2.Qd5#
- 1...Sfg4
- 2.Qd5#
- 2.Qf4#
- 1...Sf3
- 2.Qd5#
- 1...Shg4
- 2.Qd5#
- 2.Qf4#
- 1...bxc6!
- threat
- 1.Sg6?
- threat
- 2.Re5#
- 2.Qf5#
- 1...Qxg7
- 2.Qf5#
- 1...Bxb5
- 2.Qd5#
- 2.Qf5#
- 1...Rf4
- 2.Qxf4#
- 1...Rh5
- 2.Qf4#
- 1...Bd5
- 2.Qxd5#
- 1...Bd7
- 2.Re5#
- 2.Qd5#
- 1...Sd3
- 2.Rc4#
- 2.Qf5#
- 1...Sfg4
- 2.Qf4#
- 2.Qf5#
- 1...Sf3
- 2.Qf5#
- 1...Shg4
- 2.Qf4#
- 2.Qf5#
- 1...Qxg6!
- threat
- 1.Sd3?
- Keys
- 1.Sd7!
- threat
- 2.Re5#
- 1...Qxg7
- 2.Qf5#
- 1...Bxb5
- 2.Qd5#
- 1...Bxd7
- 2.Qd5#
- 1...Qf5
- 2.Qxf5#
- 1...Rf4
- 2.Qxf4#
- 1...Rh5
- 2.Qf4#
- 1...Bd5
- 2.Qxd5#
- 1...Sd3
- 2.Rc4#
- 1...Sfg4
- 2.Qf4#
- 1...Sf3
- 2.Sf6#
- 1...Shg4
- 2.Qf4#
- threat
- 1.Sd7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 3
- ADDED MATES = 6
- REMOVED MATES = 9
- Sets
- Q(h);SBLOCK::QAR2(G)
- Q(h);N_GUARD::QAB(G),XQ(h)
- Q(h);N_GUARD::QAB(G)
- R(d);N_GUARD::QAR1(G)
- R(d);N_GUARD::QAR1(G),XR(d)
- S(a);N_GUARD::B(D)
- S(a);N_GUARD::B(D),XS(a)
- S(b);N_GUARD::QAB1(G)
- S(b);N_GUARD::QAB1(G),XS(b)
- P(g);N_GUARD::B(D),XB(e)
- Tries
- Try
- S(F);
- Threat
- DUALS(2)
- Vars
- Q(h);N_GUARD::QAB1(G),XQ(h)
- R(d);N_GUARD::QAR1(G),XR(d)
- B(e);N_GUARD::QAB1(G),XB(e)
- S(a);::R1(E)
- S(a);S_CUTR(d)::QAR1(G)
- S(b);::S(F),XS(a)
- S(b);S_CUTR(d)::QAR1(G)
- Refutation
- S(a);XS(F)
- Try
- S(F);
- Threat
- R1(E)
- Vars
- Q(h);N_GUARD,XP(H)::QAB1(G)
- B(e);N_GUARD,XB(D)::QAB1(G)
- Q(h);N_GUARD::QAB1(G),XQ(h)
- R(d);N_GUARD::QAR1(G),XR(d)
- R(d);N_GUARD::QAR1(G)
- B(e);N_GUARD::QAB1(G),XB(e)
- S(a);SBLOCK::R(E)
- S(a);S_CUTR(d)::QAR1(G)
- S(b);S_CUTR(d)::QAR1(G)
- Refutation
- S(b);XS(F)
- Try
- S(F);
- Threat
- DUALS(3)
- Vars
- S(a);XS(F)::QAR1(G)
- S(b);XS(F)::QAR1(G)
- Q(h);N_GUARD::QAB1(G),XQ(h)
- S(a);SBLOCK::R(E)
- Refutation
- R(d);XS(F)
- Try
- S(F);XB(e)
- Threat
- DUALS(2)
- Vars
- Q(h);N_GUARD::QAB1(G),XQ(h)
- R(d);N_GUARD::QAR1(G)
- S(b);SBLOCK::QAB1(G)
- Refutation
- P(g);XS(F)
- Try
- S(F);
- Threat
- DUALS(2)
- Vars
- Q(h);XP(H)::QAB1(G)
- R(d);N_GUARD::QAR1(G),XR(d)
- R(d);N_GUARD::QAR1(G)
- B(e);N_GUARD::QAB1(G),XB(e)
- S(b);::QAB1(G)
- Refutation
- Q(h);XS(F)
- Try
- Actual
- S(F);
- Threat
- R1(E)
- Vars
- Q(h);N_GUARD,XP(H)::QAB1(G)
- B(e);N_GUARD,XB(D)::QAB1(G)
- B(e);N_GUARD,XS(F)::QAB1(G)
- Q(h);N_GUARD::QAB1(G),XQ(h)
- R(d);N_GUARD::QAR1(G),XR(d)
- R(d);N_GUARD::QAR1(G)
- B(e);N_GUARD::QAB1(G),XB(e)
- S(a);SBLOCK::R(E)
- S(a);S_CUTR(d)::QAR1(G)
- S(b);SBLOCK::S(F)
- S(b);S_CUTR(d)::QAR1(G)
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).