MESON Chess Problem Database
Problem Display
PID: 150748 (5nK1/1B4p1/1p2r1Nb/4nR2/1Bpkp2r/3N1P2/3PQ3/q7 w - - 0 1)
Ahues, Herbert Siegfried Oskar
3rd Prize, Suomen Shakki, 1962-1965
#2
9 + 11
| 23 | Die Schwalbe | 1965 |
| 15148 | Sadier Collection | 2014 |
SOLUTION
- SOUND
- Sets
- 1...Qc3
- 2.Bxc3#
- 2.dxc3#
- 1...Qb1
- 2.Bc3#
- 1...Qd1
- 2.Bc3#
- 1...Qe1
- 2.Bc3#
- 1...Qf1
- 2.Bc3#
- 1...Qg1
- 2.Bc3#
- 1...Qh1
- 2.Bc3#
- 1...Qa2
- 2.Bc3#
- 1...Qa4
- 2.Bc3#
- 1...Qa6
- 2.Bc3#
- 1...Qa7
- 2.Bc3#
- 1...Qa8
- 2.Bc3#
- 1...Rh1
- 2.Qxe4#
- 1...Rh2
- 2.Qxe4#
- 1...Rh3
- 2.Qxe4#
- 1...Rf4
- 2.Qe3#
- 1...Rh5
- 2.Qxe4#
- 1...Be3
- 2.Qxe3#
- 2.dxe3#
- 1...Bf4
- 2.Qxe4#
- 1...Sxd3
- 2.Rd5#
- 1...Sxf3
- 2.Rd5#
- 1...Sg4
- 2.Rd5#
- 1...Sexg6
- 2.Rd5#
- 1...Sed7
- 2.Rd5#
- 1...Sf7
- 2.Rd5#
- 1...b5
- 2.Bc5#
- 1...Qc3
- Tries
- 1.Sdf4?
- threat
- 2.Qe3#
- 2.Qxe4#
- 1...Rxf4
- 2.Qe3#
- 1...Bxf4
- 2.Qxe4#
- 1...Sxf3
- 2.Rd5#
- 2.Qe3#
- 1...Sexg6
- 2.Rd5#
- 2.Qe3#
- 1...exf3
- 2.Qf2#
- 2.Qe3#
- 2.Qe4#
- 1...Qc3
- 2.Qxe4#
- 2.dxc3#
- 1...Qb1
- 2.Qe3#
- 1...Qg1
- 2.Qxe4#
- 1...Qa3
- 2.Qxe4#
- 1...Sd3
- 2.Rd5#
- 2.Qe3#
- 1...Sg4
- 2.Rd5#
- 1...Sc6
- 2.Rd5#
- 2.Qe3#
- 1...Sed7
- 2.Rd5#
- 2.Qe3#
- 1...Sf7
- 2.Rd5#
- 2.Qe3#
- 1...c3
- 2.Qxe4#
- 1...e3
- 2.Qxe3#
- 2.dxe3#
- 1...Qe1!
- threat
- 1.f4?
- threat
- 2.Qe3#
- 2.Qxe4#
- 1...Rxf4
- 2.Qe3#
- 1...Bxf4
- 2.Qxe4#
- 1...Sxd3
- 2.Rd5#
- 2.Qe3#
- 1...Sexg6
- 2.Rd5#
- 2.Qe3#
- 1...cxd3
- 2.Qxe4#
- 1...exd3
- 2.Qf2#
- 2.Qe3#
- 2.Qe4#
- 1...c3
- 2.Qxe4#
- 1...e3
- 2.Qxe3#
- 2.dxe3#
- 1...Qe1
- 2.Bc3#
- 1...Qg1
- 2.Bc3#
- 2.Qxe4#
- 1...Qh1
- 2.Bc3#
- 2.Qe3#
- 1...Rh3
- 2.Qxe4#
- 1...Sf3
- 2.Rd5#
- 2.Qe3#
- 1...Sg4
- 2.Rd5#
- 1...Sc6
- 2.Qe3#
- 1...Sed7
- 2.Rd5#
- 2.Qe3#
- 1...Sf7
- 2.Rd5#
- 2.Qe3#
- 1...Rc6!
- threat
- 1.Sdf4?
- Keys
- 1.Sgf4!
- threat
- 2.Qe3#
- 2.Qxe4#
- 1...Rxf4
- 2.Qe3#
- 1...Bxf4
- 2.Qxe4#
- 1...Sxd3
- 2.Rd5#
- 2.Qe3#
- 1...Sxf3
- 2.Rd5#
- 2.Qe3#
- 1...cxd3
- 2.Qxe4#
- 1...exd3
- 2.Qf2#
- 2.Qe3#
- 2.Qe4#
- 1...exf3
- 2.Qf2#
- 2.Qe3#
- 2.Qe4#
- 1...c3
- 2.Qxe4#
- 1...Qe1
- 2.Bc3#
- 1...Qg1
- 2.Bc3#
- 2.Qxe4#
- 1...Sg4
- 2.Rd5#
- 1...Sc6
- 2.Rd5#
- 2.Qe3#
- 1...Seg6
- 2.Rd5#
- 2.Qe3#
- 1...Sed7
- 2.Rd5#
- 2.Qe3#
- 1...Sf7
- 2.Rd5#
- 2.Qe3#
- 1...e3
- 2.Qxe3#
- 2.dxe3#
- threat
- 1.Sgf4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 20
- Sets
- Q(a);N_GUARD::B(E)
- R(e);N_GUARD::QAR1(B),XP(d)
- R(e);S_CUTB(i)::QAB1(B)
- B(i);S_CUTR(e)::QAR1(B),XP(d)
- S(f);OGATE,XS(C)::R1(F)
- S(f);OGATE,XP(D)::R1(F)
- S(f);OGATE::R1(F)
- S(f);OGATE,XS(G)::R1(F)
- P(g);N_GUARD::B(E)
- Tries
- Try
- S(C);
- Threat
- DUALS(2)
- Vars
- R(e);XS(C)::QAB1(B)
- B(i);XS(C)::QAR1(B),XP(d)
- Q(a);::QAB1(B)
- Q(a);::QAR1(B),XP(d)
- S(f);OGATE::R1(F)
- P(b);::QAR1(B),XP(d)
- Refutation
- Q(a);
- Try
- P(D);
- Threat
- DUALS(2)
- Vars
- R(e);XP(D)::QAB1(B)
- B(i);XP(D)::QAR1(B),XP(d)
- P(b);XS(C)::QAR1(B),XP(d)
- P(b);::QAR1(B),XP(d)
- Q(a);N_GUARD::B(E)
- R(e);::QAR1(B),XP(d)
- S(f);OGATE::R1(F)
- S(f);::QAB1(B)
- Refutation
- R(h);
- Try
- Actual
- S(G);
- Threat
- DUALS(2)
- Vars
- R(e);XS(G)::QAB1(B)
- B(i);XS(G)::QAR1(B),XP(d)
- P(b);XS(C)::QAR1(B),XP(d)
- P(b);::QAR1(B),XP(d)
- Q(a);N_GUARD::B(E)
- S(f);OGATE::R1(F)
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).