MESON Chess Problem Database
Problem Display
PID: 193549 (b4R2/r4p1Q/2n1P1N1/qR5K/3b3B/p1pN3B/7p/6kr w - - 0 1)
Janet, Frank
Source?, 1915
#2
9 + 11
| 6490 | yacpdb | 2019 |
SOLUTION
- SOUND
- Sets
- 1...Qb4
- 2.Rg5#
- 1...Qb6
- 2.Rg5#
- 1...Qc7
- 2.Rb1#
- 1...Qd8
- 2.Rb1#
- 1...Qa4
- 2.Rg5#
- 1...Qa6
- 2.Rb1#
- 2.Rg5#
- 1...Bf2
- 2.Bxf2#
- 1...Bc5
- 2.Rb1#
- 1...Be5
- 2.Bf2#
- 2.Rb1#
- 1...Bf6
- 2.Bf2#
- 1...Bg7
- 2.Bf2#
- 1...Bh8
- 2.Bf2#
- 1...Se5
- 2.Rb1#
- 1...fxe6
- 2.Rf1#
- 1...fxg6+
- 2.Qxg6#
- 1...f5
- 2.Rb1#
- 1...Qb4
- Tries
- 1.Sc1?
- threat
- 2.Se2#
- 1...fxg6+
- 2.Qxg6#
- 1...Qxb5+!
- threat
- 1.Sdf4?
- threat
- 2.Se2#
- 1...fxg6+
- 2.Qxg6#
- 1...Qxb5+!
- threat
- 1.Sge5?
- threat
- 2.Sf3#
- 2.Rb1#
- 2.Rg8#
- 2.Qg8#
- 2.Qg7#
- 1...Qxb5
- 2.Rg8#
- 2.Qg8#
- 2.Qg7#
- 1...Bxe5
- 2.Bf2#
- 2.Rb1#
- 1...Sxe5
- 2.Rb1#
- 1...fxe6
- 2.Sf3#
- 2.Rb1#
- 2.Rf1#
- 2.Qg6#
- 1...Qb4
- 2.Sf3#
- 2.Rg8#
- 2.Qg8#
- 2.Qg7#
- 1...Qb6
- 2.Sf3#
- 2.Rg8#
- 2.Qg8#
- 2.Qg7#
- 1...Qd8
- 2.Sf3#
- 2.Rb1#
- 1...Qa4
- 2.Sf3#
- 2.Rg8#
- 2.Qg8#
- 2.Qg7#
- 1...Rb7
- 2.Sf3#
- 2.Rg8#
- 2.Qg8#
- 2.Qg7#
- 1...Bf2
- 2.Sf3#
- 2.Bxf2#
- 1...Be3
- 2.Sf3#
- 1...Se7
- 2.Rb1#
- 1...Sb8
- 2.Rb1#
- 1...Sd8
- 2.Rb1#
- 1...a2
- 2.Sf3#
- 2.Rg8#
- 2.Qg8#
- 2.Qg7#
- 1...c2
- 2.Sf3#
- 2.Rg8#
- 2.Qg8#
- 2.Qg7#
- 1...f5
- 2.Sf3#
- 2.Rb1#
- 2.Qg6#
- 1...f6
- 2.Sf3#
- 2.Rb1#
- 2.Qg6#
- 1...Sb4!
- threat
- 1.Qh6?
- threat
- 2.Qc1#
- 2.Qg5#
- 1...fxg6+
- 2.Qxg6#
- 1...Sb4
- 2.Qc1#
- 1...Qc7
- 2.Rb1#
- 2.Qc1#
- 1...Qd8
- 2.Rb1#
- 2.Qc1#
- 1...Qa4
- 2.Rg5#
- 2.Qg5#
- 1...Bf2
- 2.Bxf2#
- 1...Be3
- 2.Qxe3#
- 1...Be5
- 2.Bf2#
- 2.Rb1#
- 2.Qc1#
- 2.Qe3#
- 1...Bf6
- 2.Bf2#
- 2.Qc1#
- 2.Qe3#
- 1...Se5
- 2.Rb1#
- 2.Qc1#
- 1...Se7
- 2.Qc1#
- 1...Sb8
- 2.Qc1#
- 1...Sd8
- 2.Qc1#
- 1...c2
- 2.Qg5#
- 1...f6
- 2.Qc1#
- 1...Qxb5+!
- threat
- 1.Sc1?
- Keys
- 1.Qg7!
- threat
- 2.Sge5#
- 1...fxg6+
- 2.Qxg6#
- 1...Bxg7
- 2.Bf2#
- 1...fxe6
- 2.Rf1#
- 1...Sb4
- 2.Qxd4#
- 1...Qd8
- 2.Rb1#
- 1...Bf2
- 2.Bxf2#
- 1...Be3
- 2.Sgf4#
- 1...Be5
- 2.Sgxe5#
- 2.Bf2#
- 2.Rb1#
- 1...Bf6
- 2.Bf2#
- 1...Se5
- 2.Rb1#
- 1...Se7
- 2.Qxd4#
- 1...Sb8
- 2.Qxd4#
- 1...Sd8
- 2.Qxd4#
- 1...f5
- 2.Rb1#
- 1...f6
- 2.Se7#
- threat
- 1.Qg7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 6
- REMOVED MATES = 6
- Sets
- Q(g);N_GUARD,N_PINR(D)::R(D)
- Q(g);N_PINR(D)::R(D)
- B(f);N_GUARD::B(C),XB(f)
- B(f);N_PINR(D)::R(D)
- B(f);N_GUARD::B(C)
- S(h);N_PINR(D)::R(D)
- P(j);OGATE,XP(F)::R1(I)
- P(j);CHECK,OGATE,XS(G)::QAR(H),XP(j)
- P(j);N_PINR(D)::R(D)
- Tries
- Try
- S(A);
- Threat
- S(A)
- Vars
- P(j);CHECK,OGATE,XS(G)::QAR(H),XP(j)
- Refutation
- Q(g);CHECK,XR(D)
- Try
- S(A);
- Threat
- S(A)
- Vars
- P(j);CHECK,OGATE,XS(G)::QAR(H),XP(j)
- Refutation
- Q(g);CHECK,XR(D)
- Try
- S(G);N_SPINR(D)
- Threat
- DUALS(5)
- Vars
- S(h);XS(G)::R(D)
- B(f);::S(G)
- S(h);::R(D)
- Refutation
- S(h);
- Try
- Q(H);
- Threat
- DUALS(2)
- Vars
- P(j);CHECK,OGATE,XS(G)::QAR(H),XP(j)
- S(h);::QAR(H)
- B(f);N_GUARD::B(C),XB(f)
- B(f);N_GUARD::QAB(H),XB(f)
- P(e);::QAR(H)
- P(j);::QAR(H)
- Refutation
- Q(g);CHECK,XR(D)
- Try
- Actual
- Q(H);
- Threat
- QAR(H)+S(G)
- Vars
- P(j);CHECK,OGATE,P_SPINP(j),XS(G)::QAR(H),XP(j)
- B(f);N_GUARD,XQ(H)::B(C)
- P(j);OGATE,XP(F)::R1(I)
- S(h);N_GUARD::QAB(H),XB(f)
- Q(g);N_PINR(D)::R(D)
- B(f);N_GUARD::B(C),XB(f)
- B(f);N_GUARD::QAR(H)+S(G)
- B(f);N_GUARD::B(C)
- S(h);N_PINR(D)::R(D)
- P(j);N_PINR(D)::R(D)
- P(j);S_CUTB(f)::QAR(H)+S(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).