MESON Chess Problem Database
Problem Display
PID: 276025 (8/5r1Q/pR1Np1nb/p2k4/2pP2R1/3n4/2N5/KB5b w - - 0 1)
Ekstrom, Sven Johan Adrian
Schackvarlden, 1941
#2
8 + 10
| 15601 | Albrecht-Leiss-Degener Collection | 2024 |
SOLUTION
- SOUND
- Sets
- 1...Rf1
- 2.Qb7#
- 1...Rf2
- 2.Qb7#
- 1...Rf3
- 2.Qb7#
- 1...Rf4
- 2.Qb7#
- 1...Rf5
- 2.Qb7#
- 1...Rf6
- 2.Qb7#
- 1...Rb7
- 2.Qxb7#
- 1...Rf8
- 2.Qb7#
- 1...Be3
- 2.Sxe3#
- 1...Bf4
- 2.Qxh1#
- 1...Bg7
- 2.Se3#
- 1...Bf8
- 2.Se3#
- 1...c3
- 2.Ba2#
- 1...e5
- 2.Qxf7#
- 1...Rf1
- Tries
- 1.Se4?
- threat
- 2.Sc3#
- 2.Rd6#
- 1...Rf4
- 2.Sc3#
- 2.Qb7#
- 1...Bf4
- 2.Sc3#
- 1...Sdf4
- 2.Sc3#
- 1...c3
- 2.Ba2#
- 1...Rd7
- 2.Sc3#
- 2.Sf6#
- 2.Qxd7#
- 1...Bd2
- 2.Rd6#
- 1...Bf8
- 2.Sc3#
- 1...Bxe4!
- threat
- 1.Sb5?
- threat
- 2.Sc3#
- 2.Rd6#
- 1...Rf4
- 2.Sc3#
- 2.Qb7#
- 1...Bf4
- 2.Sc3#
- 2.Qxh1#
- 1...Sdf4
- 2.Se3#
- 2.Sc3#
- 1...c3
- 2.Ba2#
- 1...Rd7
- 2.Sc3#
- 2.Qxd7#
- 1...Bd2
- 2.Rd6#
- 1...Bf8
- 2.Se3#
- 2.Sc3#
- 1...axb5!
- threat
- 1.Sxf7?
- threat
- 2.Rd6#
- 1...Bf4
- 2.Qxh1#
- 1...c3
- 2.Ba2#
- 1...Bf8
- 2.Se3#
- 2.Qxh1#
- 1...Sdf4!
- threat
- 1.Sc8?
- threat
- 2.Rd6#
- 1...Rf4
- 2.Qb7#
- 1...Bf4
- 2.Qxh1#
- 1...c3
- 2.Ba2#
- 1...Rd7
- 2.Qxd7#
- 1...Bf8
- 2.Se3#
- 1...Sdf4!
- threat
- 1.Se8?
- threat
- 2.Rd6#
- 1...Rf4
- 2.Qb7#
- 1...Bf4
- 2.Qxh1#
- 1...c3
- 2.Ba2#
- 1...Rd7
- 2.Sf6#
- 2.Qxd7#
- 1...Bf8
- 2.Se3#
- 1...Sdf4!
- threat
- 1.Se4?
- Keys
- 1.Sf5!
- threat
- 2.Rd6#
- 1...Rxf5
- 2.Qb7#
- 2.Qd7#
- 1...exf5
- 2.Qxf7#
- 1...Bf4
- 2.Qxh1#
- 1...Sdf4
- 2.Sce3#
- 1...Sgf4
- 2.Sfe3#
- 1...c3
- 2.Ba2#
- 1...Rd7
- 2.Qxd7#
- 1...Bf8
- 2.Sce3#
- 2.Sfe3#
- 2.Qxh1#
- threat
- 1.Sf5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 12
- Sets
- R(j);OGATE,P_PINB(B)::QAB(H)
- R(j);OGATE::QAB(H)
- R(j);OGATE::QAB(H),XR(j)
- B(i);N_GUARD::S(C),XB(i)
- B(i);OGATE::QAB(H),XB(a)
- B(i);N_GUARD,P_PINP(D)::S(C)
- B(i);N_GUARD::S(C)
- P(c);OGATEB::B(B)
- P(g);OGATEB::QAB(H),XR(j)
- Tries
- Try
- S(G);
- Threat
- DUALS(2)
- Vars
- B(i);::S(G)
- S(b);::S(G)
- P(c);OGATEB::B(B)
- B(i);::R1(F)
- Refutation
- B(a);XS(G)
- Try
- S(G);
- Threat
- DUALS(2)
- Vars
- P(c);OGATEB::B(B)
- B(i);::R1(F)
- Refutation
- P(f);XS(G)
- Try
- S(G);XR(j)
- Threat
- R1(F)
- Vars
- B(i);OGATE::QAB(H),XB(a)
- P(c);OGATEB::B(B)
- Refutation
- S(b);
- Try
- S(G);
- Threat
- R1(F)
- Vars
- R(j);OGATE::QAB(H)
- B(i);OGATE::QAB(H),XB(a)
- P(c);OGATEB::B(B)
- R(j);OGATE::QAR2(H),XR(j)
- B(i);N_GUARD::S(C)
- Refutation
- S(b);
- Try
- S(G);
- Threat
- R1(F)
- Vars
- R(j);OGATE::QAB(H)
- B(i);OGATE::QAB(H),XB(a)
- P(c);OGATEB::B(B)
- B(i);N_GUARD::S(C)
- Refutation
- S(b);
- Try
- Actual
- S(G);
- Threat
- R1(F)
- Vars
- P(g);OGATEB,XS(G)::QAB(H),XR(j)
- B(i);OGATE::QAB(H),XB(a)
- S(b);S_CUTB(i)::S(C)
- S(h);S_CUTB(i)::S(G)
- P(c);OGATEB::B(B)
- R(j);OGATE::QAR2(H),XR(j)
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).