MESON Chess Problem Database
Problem Display
PID: 235131 (8/K2Qp2B/1p2rp2/3nk1pN/R2p2Rq/5p2/2P4N/5r2 w - - 0 1)
Ahues, Herbert Siegfried Oskar
Schach, 2013
#2
8 + 11
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Qf2
- 2.Re4#
- 1...Qg3
- 2.Re4#
- 1...Qxh2
- 2.Re4#
- 1...Qh3
- 2.Re4#
- 1...Qxg4
- 2.Sxg4#
- 1...Qxh5
- 2.Re4#
- 1...Ra1
- 2.Sxf3#
- 1...Rb1
- 2.Sxf3#
- 1...Rc1
- 2.Sxf3#
- 1...Rd1
- 2.Sxf3#
- 1...Re1
- 2.Sxf3#
- 1...Rg1
- 2.Sxf3#
- 1...Rh1
- 2.Sxf3#
- 1...Rd6
- 2.Qf5#
- 1...Sc3
- 2.Qxd4#
- 1...Se3
- 2.Qxd4#
- 1...Sb4
- 2.Qxd4#
- 1...Sf4
- 2.Qxd4#
- 1...Sc7
- 2.Qxd4#
- 1...f2
- 2.Sf3#
- 1...d3
- 2.Rae4#
- 1...Qf2
- Tries
- 1.Sf4?
- threat
- 2.Sd3#
- 2.Qxe6#
- 2.Qxd5#
- 1...Qxg4
- 2.Sd3#
- 1...Qxh7
- 2.Qxe6#
- 2.Qxd5#
- 1...Sxf4
- 2.Qxd4#
- 1...f5
- 2.Qxe6#
- 1...Rd1
- 2.Sxf3#
- 2.Qxe6#
- 2.Qxd5#
- 1...Rc6
- 2.Sd3#
- 2.Sg6#
- 2.Qxd5#
- 1...Rd6
- 2.Sd3#
- 2.Sg6#
- 2.Qf5#
- 1...Sc3
- 2.Sd3#
- 2.Qxe6#
- 2.Qxd4#
- 1...Se3
- 2.Sd3#
- 2.Qxe6#
- 2.Qxd4#
- 1...Sb4
- 2.Qxe6#
- 1...Sc7
- 2.Sd3#
- 2.Qxd4#
- 1...d3
- 2.Sxd3#
- 2.Re4#
- 2.Qxe6#
- 2.Qxd5#
- 1...gxf4!
- threat
- 1.Be4?
- threat
- 2.Qxd5#
- 1...Sf4
- 2.Qxd4#
- 1...Rd6
- 2.Qf5#
- 1...Sc3
- 2.Qxd4#
- 1...Se3
- 2.Qxd4#
- 1...Sc7
- 2.Qxd4#
- 1...Sb4!
- threat
- 1.Rxh4?
- threat
- 2.Sg4#
- 2.Re4#
- 1...gxh4
- 2.Sg4#
- 1...Re1
- 2.Sxf3#
- 2.Sg4#
- 1...Rg1
- 2.Sxf3#
- 2.Re4#
- 1...Sc3
- 2.Sg4#
- 2.Qxd4#
- 1...Se3
- 2.Re4#
- 2.Qxd4#
- 1...Sf4
- 2.Sg4#
- 2.Qxd4#
- 1...g4
- 2.Sxg4#
- 1...f5!
- threat
- 1.c4?
- threat
- 2.Qxd5#
- 1...dxc4 ep
- 2.Rae4#
- 1...Rd6
- 2.Qf5#
- 1...Sc3
- 2.Qxd4#
- 1...Se3
- 2.Qxd4#
- 1...Sb4
- 2.Qxd4#
- 1...Sc7
- 2.Qxd4#
- 1...Sf4!
- threat
- 1.Sf4?
- Keys
- 1.c3!
- threat
- 2.cxd4#
- 1...Qxg4
- 2.Sxg4#
- 1...Sxc3
- 2.Qxd4#
- 1...dxc3
- 2.Rae4#
- 1...Qf2
- 2.Re4#
- 1...Rd1
- 2.Sxf3#
- 1...d3
- 2.Rae4#
- threat
- 1.c3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 16
- Sets
- Q(d);N_GUARD::R1(D)
- Q(d);N_GUARD,XS(B)::R1(D)
- Q(d);XR(D)::S(B),XQ(d)
- Q(d);N_GUARD,XS(E)::R1(D)
- R(a);N_GUARD,P_PINR(C)::S(B),XP(b)
- R(a);N_GUARD::S(B),XP(b)
- R(i);OGATE,SBLOCK::QAR1(G)
- S(e);OGATE::QAB1(G),XP(c)
- P(b);S_CUTR(a)::S(B)
- P(c);OGATE::R1(C)
- Tries
- Try
- S(E);
- Threat
- DUALS(3)
- Vars
- Q(d);XR(D)::S(E)
- S(e);OGATE,XS(E)::QAB1(G),XP(c)
- P(j);::QAR1(G),XR(i)
- S(e);::QAR1(G),XR(i)
- Refutation
- P(g);XS(E)
- Try
- B(H);
- Threat
- QAR1(G),XS(e)
- Vars
- S(e);OGATE::QAB1(G),XP(c)
- R(i);OGATE,SBLOCK::QAR1(G)
- Refutation
- S(e);
- Try
- R(D);XQ(d)
- Threat
- DUALS(2)
- Vars
- P(g);XR(D)::S(B)
- P(g);::S(B),XP(g)
- Refutation
- P(j);
- Try
- P(A);
- Threat
- QAR1(G),XS(e)
- Vars
- P(c);EP,OGATE,XP(A)::R1(C)
- R(i);OGATE,SBLOCK::QAR1(G)
- S(e);OGATE::QAB1(G),XP(c)
- Refutation
- S(e);
- Try
- Actual
- P(A);
- Threat
- P(A),XP(c)
- Vars
- Q(d);XR(D)::S(B),XQ(d)
- S(e);OGATE,XP(A)::QAB1(G),XP(c)
- P(c);OGATE,XP(A)::R1(C)
- Q(d);N_GUARD::R1(D)
- R(a);N_GUARD::S(B),XP(b)
- P(c);OGATE::R1(C)
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).