MESON Chess Problem Database
Problem Display
PID: 238722 (1n6/1B2Bb1Q/5Nr1/4R3/P1kp1nN1/5p2/PP1p1P2/3Kb3 w - - 0 1)
Ellerman, Arnoldo
L'Italia Scacchistica, 1950
#2
11 + 9
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Rxg4
- 2.Qc2#
- 1...Rg5
- 2.Qc2#
- 1...Rxf6
- 2.Qc2#
- 1...Rh6
- 2.Qc2#
- 1...Rg7
- 2.Qc2#
- 1...Rg8
- 2.Qc2#
- 1...Sd3
- 2.Qxf7#
- 1...Sa6
- 2.Bxa6#
- 1...Sc6
- 2.Ba6#
- 1...Sd7
- 2.Ba6#
- 1...d3
- 2.Re4#
- 1...Rxg4
- Tries
- 1.Se3+?
- 1...Kd3
- 2.Be4#
- 1...dxe3!
- 1...Kd3
- 1.Re2?
- threat
- 2.Se5#
- 1...Kd3
- 2.Se5#
- 1...Rxg4
- 2.Qc2#
- 1...Rg5
- 2.Qc2#
- 1...Sd3
- 2.Qxf7#
- 1...Sc6
- 2.Ba6#
- 1...Sd7
- 2.Ba6#
- 1...d3
- 2.Re4#
- 1...fxe2+!
- threat
- 1.Re3?
- threat
- 2.Se5#
- 2.b3#
- 1...Rxg4
- 2.Qc2#
- 2.b3#
- 1...d3
- 2.Re4#
- 1...Rg5
- 2.Qc2#
- 2.b3#
- 1...Sd3
- 2.Qxf7#
- 1...Sc6
- 2.Ba6#
- 2.b3#
- 1...Sd7
- 2.Ba6#
- 2.b3#
- 1...dxe3!
- threat
- 1.Ra5?
- threat
- 2.Se5#
- 1...Kd3
- 2.Se5#
- 1...Rxg4
- 2.Qc2#
- 1...Rg5
- 2.Qc2#
- 1...Sd3
- 2.Qxf7#
- 1...Sc6
- 2.Ba6#
- 1...Sd7
- 2.Ba6#
- 1...d3!
- threat
- 1.Rc5+?
- 1...Kd3
- 2.Se5#
- 2.Be4#
- 1...Kb4!
- 1...Kd3
- 1.Rd5?
- threat
- 2.Se5#
- 1...Kd3
- 2.Se5#
- 1...Rxg4
- 2.Qc2#
- 1...Rg5
- 2.Qc2#
- 1...Sc6
- 2.Ba6#
- 1...Sd7
- 2.Ba6#
- 1...Sd3!
- threat
- 1.Rf5?
- threat
- 2.Se5#
- 1...Kd3
- 2.Se5#
- 1...Sd3
- 2.Qxf7#
- 1...Sc6
- 2.Ba6#
- 1...Sd7
- 2.Ba6#
- 1...d3
- 2.Rxf4#
- 1...Rxg4!
- threat
- 1.Rg5?
- threat
- 2.Se5#
- 1...Kd3
- 2.Se5#
- 1...Rxg5
- 2.Qc2#
- 1...Sd3
- 2.Qxf7#
- 1...Sc6
- 2.Ba6#
- 1...Sd7
- 2.Ba6#
- 1...d3!
- threat
- 1.Rh5?
- threat
- 2.Se5#
- 1...Kd3
- 2.Se5#
- 1...Rxg4
- 2.Qc2#
- 1...Rg5
- 2.Qc2#
- 1...Sd3
- 2.Qxf7#
- 1...Sc6
- 2.Ba6#
- 1...Sd7
- 2.Ba6#
- 1...d3!
- threat
- 1.Se3+?
- Keys
- 1.Re6!
- threat
- 2.Se5#
- 1...Kd3
- 2.Se5#
- 1...Rxg4
- 2.Qc2#
- 1...d3
- 2.Re4#
- 1...Rg5
- 2.Qc2#
- 1...Sd3
- 2.Bd5#
- 1...Sc6
- 2.Ba6#
- 1...Sd7
- 2.Ba6#
- threat
- 1.Re6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 1
- REMOVED MATES = 5
- Sets
- R(g);OGATE,XS(F)::QAR2(K)
- R(g);OGATE::QAR2(K)
- R(g);OGATE,XS(H)::QAR2(K)
- S(f);N_GUARD,SBLOCK::QAB(K),XB(h)
- S(i);N_GUARD::B(I),XS(i)
- S(i);N_GUARD::B(I)
- P(e);OGATEB,SBLOCK::R(G)
- Tries
- Try
- S(F);CHECK
- Vars
- K(d);P_SPINR(g),S_FLIGHT::B(I)
- Refutation
- P(e);XS(F)
- Try
- R(G);
- Threat
- S(F)
- Vars
- K(d);P_SPINR(g),S_FLIGHT::S(F)
- R(g);OGATE,XS(F)::QAR2(K)
- R(g);OGATE::QAR2(K)
- S(f);N_GUARD,SBLOCK::QAB(K),XB(h)
- S(i);N_GUARD::B(I)
- P(e);OGATEB,SBLOCK::R(G)
- Refutation
- P(c);CHECK,XR(G)
- Try
- R(G);
- Threat
- DUALS(2)
- Vars
- P(e);OGATEB,SBLOCK::R(G)
- S(f);N_GUARD::QAB(K),XB(h)
- Refutation
- P(e);XR(G)
- Try
- R(G);
- Threat
- S(F)
- Vars
- K(d);P_SPINR(g),S_FLIGHT::S(F)
- R(g);OGATE,XS(F)::QAR2(K)
- R(g);OGATE::QAR2(K)
- S(f);N_GUARD,SBLOCK::QAB(K),XB(h)
- S(i);N_GUARD::B(I)
- Refutation
- P(e);
- Try
- R(G);CHECK
- Refutation
- K(d);P-FLIGHT
- Try
- R(G);
- Threat
- S(F)
- Vars
- K(d);P_SPINP(e),P_SPINR(g),S_FLIGHT::S(F)
- R(g);OGATE,XS(F)::QAR2(K)
- R(g);OGATE::QAR2(K)
- S(i);N_GUARD::B(I)
- Refutation
- S(f);
- Try
- R(G);
- Threat
- S(F)
- Vars
- K(d);S_FLIGHT::S(F)
- S(f);N_GUARD,SBLOCK::QAB(K),XB(h)
- S(i);N_GUARD::B(I)
- P(e);OGATEB,SBLOCK::R(G),XS(f)
- Refutation
- R(g);XS(F)
- Try
- R(G);
- Threat
- S(F)
- Vars
- K(d);P_SPINR(g),S_FLIGHT::S(F)
- R(g);OGATE,XR(G)::QAR2(K)
- S(f);N_GUARD,SBLOCK::QAB(K),XB(h)
- S(i);N_GUARD::B(I)
- Refutation
- P(e);
- Try
- R(G);
- Threat
- S(F)
- Vars
- K(d);P_SPINR(g),S_FLIGHT::S(F)
- R(g);OGATE,XS(F)::QAR2(K)
- R(g);OGATE::QAR2(K)
- S(f);N_GUARD,SBLOCK::QAB(K),XB(h)
- S(i);N_GUARD::B(I)
- Refutation
- P(e);
- Try
- Actual
- R(G);
- Threat
- S(F)
- Vars
- K(d);P_SPINR(g),S_FLIGHT::S(F)
- R(g);OGATE,XS(F)::QAR2(K)
- P(e);OGATEB,SBLOCK::R(G)
- R(g);OGATE::QAR2(K)
- S(f);N_GUARD,SBLOCK::B(I)
- S(i);N_GUARD::B(I)
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).