MESON Chess Problem Database
Problem Display
PID: 239464 (4RQ2/1Kp2p2/Np3P2/2rkn2b/R7/2Ppb1NB/7B/2q5 w - - 0 1)
Ahues, Herbert Siegfried Oskar
Nepszava, 1939
#2
10 + 10
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Ra5
- 2.Sxc7#
- 1...Rb5
- 2.Sxc7#
- 1...Bd2
- 2.Rd4#
- 1...Bd4
- 2.Rxd4#
- 1...Bf4
- 2.Rd4#
- 1...Bg5
- 2.Rd4#
- 1...Bh6
- 2.Rd4#
- 1...Sc4
- 2.Sb4#
- 1...Sg4
- 2.Bg2#
- 1...Sc6
- 2.Sxc7#
- 1...c6
- 2.Sc7#
- 1...Ra5
- Tries
- 1.Sf1?
- threat
- 2.Rxe5#
- 1...Qxc3
- 2.Sxe3#
- 1...Bd4
- 2.Rxd4#
- 1...Bf4
- 2.Rd4#
- 1...Sf3
- 2.Rd8#
- 1...Sc4
- 2.Sb4#
- 1...Sg4
- 2.Bg2#
- 1...Sc6
- 2.Sxc7#
- 1...Sg6
- 2.Rd8#
- 2.Qxf7#
- 1...Sd7!
- threat
- 1.Sxh5?
- threat
- 2.Rxe5#
- 1...Bd4
- 2.Rxd4#
- 1...Sd7
- 2.Bg2#
- 2.Qxf7#
- 1...Bf4
- 2.Rd4#
- 1...Sf3
- 2.Rd8#
- 2.Qxf7#
- 1...Sc4
- 2.Sb4#
- 2.Bg2#
- 2.Qxf7#
- 1...Sg4
- 2.Bg2#
- 2.Qxf7#
- 1...Sc6
- 2.Sxc7#
- 2.Bg2#
- 2.Qxf7#
- 1...Sg6
- 2.Bg2#
- 2.Rd8#
- 2.Qxf7#
- 1...Qxc3!
- threat
- 1.Re4?
- threat
- 2.Sb4#
- 2.R8xe5#
- 1...Bd4
- 2.Rxd4#
- 1...Sd7
- 2.Sb4#
- 1...Qb2
- 2.R8xe5#
- 1...Qa3
- 2.R8xe5#
- 1...Qb1
- 2.R8xe5#
- 1...Rc4
- 2.R4xe5#
- 2.R8xe5#
- 1...Rb5
- 2.Sxc7#
- 2.R8xe5#
- 1...Bf4
- 2.Sb4#
- 2.Rd4#
- 1...Sf3
- 2.Sb4#
- 2.Rd8#
- 1...Sc4
- 2.Sb4#
- 1...Sg4
- 2.Sb4#
- 2.Rd8#
- 1...Sc6
- 2.Sxc7#
- 1...Sg6
- 2.Sb4#
- 2.Rd8#
- 1...Qxc3!
- threat
- 1.Qe7?
- threat
- 2.Qxe5#
- 1...Sd7
- 2.Qxd7#
- 1...Bd4
- 2.Rxd4#
- 1...Bf4
- 2.Rd4#
- 1...Sf3
- 2.Rd8#
- 2.Qd8#
- 2.Qd7#
- 1...Sc4
- 2.Sb4#
- 1...Sg4
- 2.Bg2#
- 2.Rd8#
- 2.Qd8#
- 2.Qd7#
- 1...Sc6
- 2.Sxc7#
- 2.Qd7#
- 1...Sg6
- 2.Rd8#
- 2.Qd8#
- 2.Qd7#
- 1...Qxc3!
- threat
- 1.Sf1?
- Keys
- 1.Sf5!
- threat
- 2.Rxe5#
- 1...Qxc3
- 2.Sxe3#
- 1...Bd4
- 2.Rxd4#
- 1...Sd7
- 2.Se7#
- 1...Bf4
- 2.Rd4#
- 1...Sf3
- 2.Se7#
- 1...Sc4
- 2.Sb4#
- 1...Sg4
- 2.Bg2#
- 1...Sc6
- 2.Sxc7#
- 1...Sg6
- 2.Qxf7#
- threat
- 1.Sf5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 6
- Sets
- R(d);N_GUARD::S(F),XP(i)
- B(c);N_GUARD::R1(E)
- B(c);N_GUARD::R1(E),XB(c)
- S(f);SBLOCK::S(F)
- S(f);N_GUARD,S_CUTB(g)::B(D)
- S(f);S_CUTR(d)::S(F),XP(i)
- P(i);S_CUTR(d)::S(F)
- Tries
- Try
- S(C);
- Threat
- R1(I),XS(f)
- Vars
- Q(a);N_GUARD,XP(B)::S(C),XB(c)
- B(c);N_GUARD::R1(E),XB(c)
- B(c);N_GUARD::R1(E)
- S(f);N_GUARD::R(I)
- S(f);SBLOCK::S(F)
- S(f);N_GUARD,S_CUTB(g)::B(D)
- S(f);S_CUTR(d)::S(F),XP(i)
- Refutation
- S(f);
- Try
- S(C);XB(g)
- Threat
- R1(I),XS(f)
- Vars
- B(c);N_GUARD::R1(E),XB(c)
- B(c);N_GUARD::R1(E)
- Refutation
- Q(a);XP(B)
- Try
- R(E);
- Threat
- DUALS(2)
- Vars
- B(c);N_GUARD::R1(E),XB(c)
- S(f);::S(F)
- Q(a);::R1(I),XS(f)
- S(f);S_CUTR(d)::S(F),XP(i)
- Refutation
- Q(a);XP(B)
- Try
- Q(J);
- Threat
- QAR1(J),XS(f)
- Vars
- S(f);N_GUARD::QAR2(J),XS(f)
- B(c);N_GUARD::R1(E),XB(c)
- B(c);N_GUARD::R1(E)
- S(f);SBLOCK::S(F)
- Refutation
- Q(a);XP(B)
- Try
- Actual
- S(C);
- Threat
- R1(I),XS(f)
- Vars
- Q(a);N_GUARD,XP(B)::S(C),XB(c)
- B(c);N_GUARD::R1(E),XB(c)
- S(f);::S(C)
- B(c);N_GUARD::R1(E)
- S(f);SBLOCK::S(F)
- S(f);N_GUARD,S_CUTB(g)::B(D)
- S(f);S_CUTR(d)::S(F),XP(i)
- S(f);N_GUARD,S_CUTB(g)::QAB(J),XP(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).