MESON Chess Problem Database
Problem Display
PID: 194268 (7Q/8/2nN3P/3B1r1N/R7/p2P3p/PP3kp1/3KR2n w - - 0 1)
Janet, Frank
Pittsburgh Gazette-Times, 1917
#2
11 + 7
| 6490 | yacpdb | 2019 |
SOLUTION
- SOUND
- Sets
- 1...Rf3
- 2.Se4#
- 1...Rf4
- 2.Rxf4#
- 1...Rxd5
- 2.Rf4#
- 1...Re5
- 2.Rf4#
- 1...Rg5
- 2.Rf4#
- 1...Rf6
- 2.Qxf6#
- 1...Rf8
- 2.Qxf8#
- 1...Sb4
- 2.Qd4#
- 1...Sd4
- 2.Qxd4#
- 1...Sa5
- 2.Qd4#
- 1...Sa7
- 2.Qd4#
- 1...Se7
- 2.Qd4#
- 1...Sb8
- 2.Qd4#
- 1...Sd8
- 2.Qd4#
- 1...axb2
- 2.Qxb2#
- 1...Rf3
- Tries
- 1.Bxc6?
- threat
- 2.Qd4#
- 1...Rd5
- 2.Rf4#
- 1...Rf3
- 2.Se4#
- 1...Rf4
- 2.Rxf4#
- 1...Re5
- 2.Rf4#
- 1...Rf6
- 2.Qxf6#
- 1...Rxh5!
- threat
- 1.Qe5?
- threat
- 2.Qe2#
- 2.Qe3#
- 2.Qxf5#
- 1...Rxe5
- 2.Rf4#
- 1...Rxh5
- 2.Qf4#
- 2.Qe3#
- 1...g1S
- 2.Qh2#
- 2.Qe3#
- 1...Rf3
- 2.Se4#
- 2.Qe2#
- 1...Rf4
- 2.Rxf4#
- 2.Qxf4#
- 2.Qe2#
- 2.Qe3#
- 1...Rg5
- 2.Rf4#
- 2.Qf4#
- 2.Qe2#
- 2.Qe3#
- 1...Rf6
- 2.Qxf6#
- 2.Qe2#
- 2.Qe3#
- 1...Rf7
- 2.Qe2#
- 2.Qe3#
- 1...Rf8
- 2.Qe2#
- 2.Qe3#
- 1...Sg3
- 2.Qxg3#
- 2.Qe3#
- 1...Sd4
- 2.Qxd4#
- 2.Qe3#
- 1...Se7
- 2.Qd4#
- 2.Qe2#
- 2.Qe3#
- 1...Sxe5!
- threat
- 1.Bxc6?
- Keys
- 1.Qg7!
- 1...Rxd5
- 2.Rf4#
- 1...Rxh5
- 2.Rf4#
- 1...axb2
- 2.Qxb2#
- 1...g1Q
- 2.Qxg1#
- 1...g1S
- 2.Qxg1#
- 1...g1B
- 2.Qxg1#
- 1...g1R
- 2.Qxg1#
- 1...Rf3
- 2.Se4#
- 1...Rf4
- 2.Rxf4#
- 1...Re5
- 2.Rf4#
- 1...Rg5
- 2.Rf4#
- 1...Rf6
- 2.Qxf6#
- 1...Rf7
- 2.Qxf7#
- 1...Rf8
- 2.Qxf8#
- 1...Sg3
- 2.Qxg3#
- 1...Sb4
- 2.Qd4#
- 2.Qa7#
- 1...Sd4
- 2.Qxd4#
- 1...Sa5
- 2.Qd4#
- 2.Qa7#
- 1...Se5
- 2.Qa7#
- 1...Sa7
- 2.Qd4#
- 2.Qxa7#
- 1...Se7
- 2.Qd4#
- 1...Sb8
- 2.Qd4#
- 2.Qa7#
- 1...Sd8
- 2.Qd4#
- 2.Qa7#
- 1...h2
- 2.Qxg2#
- 1...Rxd5
- 1.Qg7!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 9
- REMOVED MATES = 5
- Sets
- R(f);SBLOCK::S(I)
- R(f);N_GUARD::R(F),XR(f)
- R(f);N_GUARD,P_PINP(E),XB(G)::R(F)
- R(f);N_GUARD::R(F)
- R(f);OGATEB::QAR(K),XR(f)
- S(g);N_GUARD::QAB(K)
- S(g);N_GUARD::QAB(K),XS(g)
- P(d);OGATE,XP(D)::QAR(K),XP(d)
- Tries
- Try
- B(G);XS(g)
- Threat
- QAB(K)
- Vars
- R(f);N_GUARD,P_PINP(E)::R(F)
- R(f);SBLOCK::S(I)
- R(f);N_GUARD::R(F),XR(f)
- R(f);N_GUARD::R(F)
- R(f);OGATEB::QAR(K),XR(f)
- Refutation
- R(f);XS(H)
- Try
- Q(K);
- Threat
- DUALS(3)
- Vars
- R(f);N_GUARD,XQ(K)::R(F)
- Refutation
- S(g);XQ(K)
- Try
- Actual
- Q(K);
- Vars
- R(f);N_GUARD,P_PINP(E),XB(G)::R(F)
- R(f);N_GUARD,XS(H)::R(F)
- P(d);OGATE,XP(D)::QAR(K),XP(d)
- P(c);OGATE,P_PINR(B)::QAB1(K),XQ(c)
- P(c);OGATE::QAB1(K),XS(c)
- P(c);OGATE::QAB1(K),XB(c)
- P(c);OGATE,P_PINR(B)::QAB1(K),XR(c)
- R(f);SBLOCK::S(I)
- R(f);N_GUARD::R(F),XR(f)
- R(f);N_GUARD::R(F)
- R(f);OGATEB::QAR(K),XR(f)
- S(a);N_GUARD::QAB1(K),XS(a)
- S(g);N_GUARD::QAB(K),XS(g)
- S(g);N_GUARD::QAB(K)
- P(e);N_GUARD::QAR1(K),XP(c)
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).