MESON Chess Problem Database
Problem Display
PID: 198156 (8/b5p1/3Q4/3N4/1P1kB3/1K2R2r/8/4n3 w - - 0 1)
Ellerman, Arnoldo
3rd Prize, Good Companions, 1920
#2
6 + 5
| 6490 | yacpdb | 2019 |
SOLUTION
- SOUND
- Sets
- 1...Rxe3+
- 2.Sc3#
- 1...g5
- 2.Qf6#
- 1...g6
- 2.Qf6#
- 1...Rxe3+
- Tries
- 1.Bb1?
- threat
- 2.Qe5#
- 1...Rxe3+
- 2.Sc3#
- 1...Rh5
- 2.Re4#
- 1...Bb8
- 2.Qc5#
- 1...Sf3
- 2.Re4#
- 1...Sd3!
- threat
- 1.Bh1?
- threat
- 2.Qf4#
- 2.Qe5#
- 1...Rxe3+
- 2.Sc3#
- 1...Rxh1
- 2.Qe5#
- 1...Rf3
- 2.Qe5#
- 1...Rh4
- 2.Qe5#
- 1...Rh5
- 2.Qf4#
- 1...Bb8
- 2.Qc5#
- 2.Qb6#
- 1...Sg2
- 2.Qe5#
- 1...Sd3
- 2.Re4#
- 1...g5
- 2.Qe5#
- 2.Qf6#
- 1...Sf3!
- threat
- 1.Bc2?
- threat
- 2.Qe5#
- 1...Rxe3+
- 2.Sc3#
- 1...Rh5
- 2.Re4#
- 1...Bb8
- 2.Qc5#
- 1...Sf3
- 2.Re4#
- 1...Sd3!
- threat
- 1.Bg2?
- threat
- 2.Qf4#
- 2.Qe5#
- 1...Rxe3+
- 2.Sc3#
- 1...Sxg2
- 2.Qe5#
- 1...Sd3
- 2.Re4#
- 1...Rf3
- 2.Qe5#
- 1...Rh4
- 2.Qe5#
- 1...Rh5
- 2.Qf4#
- 1...Bb8
- 2.Qc5#
- 2.Qb6#
- 1...g5
- 2.Qe5#
- 2.Qf6#
- 1...Sf3!
- threat
- 1.Bf3?
- threat
- 2.Qf4#
- 2.Qe5#
- 1...Rxf3
- 2.Qe5#
- 1...Sd3
- 2.Re4#
- 1...Rh4
- 2.Qe5#
- 1...Rh5
- 2.Qf4#
- 1...Bb8
- 2.Qc5#
- 2.Qb6#
- 1...Sg2
- 2.Qe5#
- 1...g5
- 2.Qe5#
- 2.Qf6#
- 1...Sxf3!
- threat
- 1.Bg6?
- threat
- 2.Qe5#
- 1...Rxe3+
- 2.Sc3#
- 1...Sd3
- 2.Re4#
- 1...Bb8
- 2.Qc5#
- 1...Sf3
- 2.Rd3#
- 1...Rh5!
- threat
- 1.Bh7?
- threat
- 2.Qe5#
- 1...Rxe3+
- 2.Sc3#
- 1...Sd3
- 2.Re4#
- 1...Bb8
- 2.Qc5#
- 1...Sf3
- 2.Rd3#
- 1...Rh5!
- threat
- 1.Qc7?
- threat
- 2.Qc3#
- 2.Qxg7#
- 1...Rh5
- 2.Qc3#
- 1...Rf3
- 2.Qc3#
- 1...Rg3
- 2.Qc3#
- 1...Rh6
- 2.Qc3#
- 1...Rh7
- 2.Qc3#
- 1...Bc5
- 2.Qxg7#
- 1...Bb8
- 2.Qc3#
- 1...Sd3
- 2.Qc3#
- 1...Sf3
- 2.Qc3#
- 1...g5
- 2.Qc3#
- 2.Qg7#
- 1...g6
- 2.Qc3#
- 2.Qg7#
- 1...Rxe3+!
- threat
- 1.Bb1?
- Keys
- 1.Bf5!
- threat
- 2.Qe5#
- 1...Rxe3+
- 2.Sc3#
- 1...Sd3
- 2.Re4#
- 1...Bb8
- 2.Qc5#
- 1...Sf3
- 2.Rd3#
- threat
- 1.Bf5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 2
- Sets
- R(b);CHECK,SBLOCK,XR(B)::QAR(F)+S(E)
- P(e);N_GUARD::QAB(F)
- Tries
- Try
- B(D);
- Threat
- QAB1(F)
- Vars
- R(b);CHECK,SBLOCK,XR(B)::QAR(F)+S(E)
- R(b);N_PINR(B)::R1(B)
- B(d);N_GUARD::QAB1(F)
- S(a);N_PINR(B)::R1(B)
- Refutation
- S(a);N_PINR(B)
- Try
- B(D);
- Threat
- DUALS(2)
- Vars
- R(b);CHECK,SBLOCK,XR(B)::QAR(F)+S(E)
- R(b);N_PINR(B),XB(D)::QAB1(F)
- R(b);::QAB1(F)
- R(b);N_PINR(B)::QAB1(F)
- R(b);N_PINR(B)::QAR2(F)
- S(a);::QAB1(F)
- S(a);N_PINR(B),SBLOCK::R1(B)
- Refutation
- S(a);N_PINR(B)
- Try
- B(D);
- Threat
- QAB1(F)
- Vars
- R(b);CHECK,SBLOCK,XR(B)::QAR(F)+S(E)
- R(b);N_PINR(B)::R1(B)
- B(d);N_GUARD::QAB1(F)
- S(a);N_PINR(B)::R1(B)
- Refutation
- S(a);N_PINR(B)
- Try
- B(D);
- Threat
- DUALS(2)
- Vars
- R(b);CHECK,SBLOCK,XR(B)::QAR(F)+S(E)
- S(a);XB(D)::QAB1(F)
- S(a);N_PINR(B),SBLOCK::R1(B)
- R(b);::QAB1(F)
- R(b);N_PINR(B)::QAB1(F)
- R(b);N_PINR(B)::QAR2(F)
- Refutation
- S(a);N_PINR(B)
- Try
- B(D);N_SPINR(B)
- Threat
- DUALS(2)
- Vars
- R(b);P_PINR(B),XB(D)::QAB1(F)
- S(a);SBLOCK::R1(B)
- R(b);::QAB1(F)
- R(b);::QAR2(F)
- S(a);::QAB1(F)
- Refutation
- S(a);XB(D)
- Try
- B(D);
- Threat
- QAB1(F)
- Vars
- R(b);CHECK,SBLOCK,XR(B)::QAR(F)+S(E)
- S(a);N_PINR(B),SBLOCK::R1(B)
- B(d);N_GUARD::QAB1(F)
- S(a);N_GUARD,N_PINR(B),S_CUTR(b)::R1(B)
- Refutation
- R(b);N_PINR(B)
- Try
- B(D);
- Threat
- QAB1(F)
- Vars
- R(b);CHECK,SBLOCK,XR(B)::QAR(F)+S(E)
- S(a);N_PINR(B),SBLOCK::R1(B)
- B(d);N_GUARD::QAB1(F)
- S(a);N_GUARD,N_PINR(B),S_CUTR(b)::R1(B)
- Refutation
- R(b);N_PINR(B)
- Try
- Q(F);
- Threat
- DUALS(2)
- Vars
- R(b);N_PINR(B)::QAB1(F)
- R(b);::QAB1(F)
- B(d);::QAB(F),XP(e)
- B(d);::QAB1(F)
- S(a);N_PINR(B)::QAB1(F)
- Refutation
- R(b);CHECK,XR(B)
- Try
- Actual
- B(D);
- Threat
- QAB1(F)
- Vars
- R(b);CHECK,SBLOCK,XR(B)::QAR(F)+S(E)
- S(a);N_PINR(B),SBLOCK::R1(B)
- B(d);N_GUARD::QAB1(F)
- S(a);N_GUARD,N_PINR(B),S_CUTR(b)::R1(B)
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).