MESON Chess Problem Database
Problem Display
PID: 238159 (3Q4/r7/3b1p2/1n2k2n/R3Np1N/3PP3/B3b2K/8 w - - 0 1)
Hermanson, Halvar
7th Comm., Deutsche Schachzeitung, 1981
#2
8 + 8
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Ba3
- 2.Qd5#
- 1...Bb4
- 2.Qd5#
- 1...Bc5
- 2.Qd5#
- 1...Bc7
- 2.Qe7#
- 2.Qd5#
- 2.Qe8#
- 1...Be7
- 2.Qd5#
- 1...Bb8
- 2.Qd5#
- 1...Bf8
- 2.Qd5#
- 1...Sa3
- 2.Qxd6#
- 1...Sc3
- 2.Qxd6#
- 1...Sd4
- 2.Qxd6#
- 2.exd4#
- 1...Sc7
- 2.Qxd6#
- 1...Sg3
- 2.Qxf6#
- 1...Sg7
- 2.Qxf6#
- 1...f5
- 2.Sg6#
- 1...Ba3
- Tries
- 1.Sd2?
- threat
- 2.Re4#
- 1...Bxd3
- 2.Sdf3#
- 1...Bf3
- 2.Sdxf3#
- 1...Bb4
- 2.Qd5#
- 1...Sc3
- 2.d4#
- 1...Sd4
- 2.exd4#
- 1...Sg3
- 2.exf4#
- 1...f5
- 2.Sg6#
- 1...Rxa4!
- threat
- 1.Sg3?
- threat
- 2.Sg6#
- 2.Re4#
- 1...Rxa4
- 2.Sg6#
- 1...Bxd3
- 2.Sf3#
- 1...Sxg3
- 2.exf4#
- 1...Rg7
- 2.Re4#
- 1...Bf3
- 2.Sxf3#
- 2.Sg6#
- 1...Bb4
- 2.Sg6#
- 2.Qd5#
- 1...Sc3
- 2.Sg6#
- 2.d4#
- 1...Sd4
- 2.Sg6#
- 2.exd4#
- 1...f5
- 2.Sg6#
- 1...fxg3+!
- threat
- 1.Sc5?
- threat
- 2.Re4#
- 1...Rxa4
- 2.Sd7#
- 1...Bxd3
- 2.Sxd3#
- 1...Sc3
- 2.d4#
- 1...Sd4
- 2.exd4#
- 1...Sg3
- 2.exf4#
- 1...f5
- 2.Sg6#
- 1...Bf3!
- threat
- 1.Qd7?
- threat
- 2.Sg6#
- 2.Qf5#
- 2.Qe6#
- 1...fxe3
- 2.Sg6#
- 2.Qf5#
- 1...Bg4
- 2.Sg6#
- 1...Sd4
- 2.Sg6#
- 2.Qxd6#
- 2.exd4#
- 1...Sc7
- 2.Sg6#
- 2.Qf5#
- 2.Qxd6#
- 1...Sg3
- 2.Sg6#
- 2.Qe6#
- 1...Sg7
- 2.Sg6#
- 1...f5
- 2.Sg6#
- 2.Qxf5#
- 2.Qe6#
- 1...Rxd7!
- threat
- 1.Qc8?
- threat
- 2.Sg6#
- 2.Qf5#
- 2.Qe6#
- 1...fxe3
- 2.Sg6#
- 2.Qf5#
- 1...Re7
- 2.Sg6#
- 2.Qf5#
- 1...Rg7
- 2.Qf5#
- 2.Qe6#
- 1...Bg4
- 2.Sg6#
- 1...Sd4
- 2.Sg6#
- 2.exd4#
- 1...Sc7
- 2.Sg6#
- 2.Qf5#
- 1...Sg3
- 2.Sg6#
- 2.Qe6#
- 1...Sg7
- 2.Sg6#
- 1...f5
- 2.Sg6#
- 2.Qxf5#
- 2.Qe6#
- 1...Rd7!
- threat
- 1.exf4+?
- 1...Sxf4
- 2.Qxf6#
- 1...Kxf4!
- 1...Sxf4
- 1.Sd2?
- Keys
- 1.Sg5!
- threat
- 2.Re4#
- 1...Rxa4
- 2.Sf7#
- 1...Bxd3
- 2.Sgf3#
- 1...Bf3
- 2.Sgxf3#
- 1...Bb4
- 2.Qd5#
- 1...Sc3
- 2.d4#
- 1...Sd4
- 2.exd4#
- 1...Sg3
- 2.exf4#
- 1...f5
- 2.Sg6#
- threat
- 1.Sg5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 4
- REMOVED MATES = 8
- Sets
- B(f);OGATE::QAR1(H)
- S(c);N_GUARD::QAB1(H),XB(f)
- S(e);N_GUARD::QAB1(H),XP(g)
- P(g);SBLOCK::S(G)
- Tries
- Try
- S(F);
- Threat
- R1(E)
- Vars
- B(a);N_GUARD,XP(C)::S(F)
- B(a);N_GUARD::S(F),XB(a)
- B(f);OGATE::QAR1(H)
- S(c);N_GUARD::P(C)
- S(c);OGATE::P(D),XS(c)
- S(e);N_GUARD::P(D),XP(b)
- P(g);SBLOCK::S(G)
- Refutation
- R(h);XR(E)
- Try
- S(F);
- Threat
- DUALS(2)
- Vars
- R(h);XR(E)::S(G)
- B(a);N_GUARD,XP(C)::S(G)
- S(e);N_GUARD,XS(F)::P(D),XP(b)
- R(h);::R1(E)
- P(g);::S(G)
- Refutation
- P(b);CHECK,XS(F)
- Try
- S(F);
- Threat
- R1(E)
- Vars
- R(h);N_GUARD,XR(E)::S(F)
- B(a);XP(C)::S(F),XB(a)
- S(c);N_GUARD::P(C)
- S(c);OGATE::P(D),XS(c)
- S(e);N_GUARD::P(D),XP(b)
- P(g);SBLOCK::S(G)
- Refutation
- B(a);
- Try
- Q(H);
- Threat
- DUALS(3)
- Vars
- B(a);::S(G)
- S(e);::S(G)
- Refutation
- R(h);XQ(H)
- Try
- Q(H);
- Threat
- DUALS(3)
- Vars
- B(a);::S(G)
- S(e);::S(G)
- Refutation
- R(h);
- Try
- P(D);CHECK,XP(b)
- Vars
- S(e);XP(D)::QAB1(H),XP(g)
- Refutation
- K(d);S_FLIGHT,XP(D)
- Try
- Actual
- S(F);
- Threat
- R1(E)
- Vars
- R(h);N_GUARD,XR(E)::S(F)
- B(a);N_GUARD,XP(C)::S(F)
- B(a);N_GUARD::S(F),XB(a)
- B(f);OGATE::QAR1(H)
- S(c);N_GUARD::P(C)
- S(c);OGATE::P(D),XS(c)
- S(e);N_GUARD::P(D),XP(b)
- P(g);SBLOCK::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).