MESON Chess Problem Database
Problem Display
PID: 234186 (K7/3Qpp2/R4b1n/P2Nk3/3p4/3pnPP1/4r2B/4R3 w - - 0 1)
Ahues, Herbert Siegfried Oskar
Berliner Morgenpost, 1964
#2
9 + 9
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Rxe1
- 2.g4#
- 1...Sd1
- 2.g4#
- 1...Sc2
- 2.g4#
- 1...Sc4
- 2.g4#
- 1...Rxe1
- Tries
- 1.Sxe3?
- threat
- 2.Sc4#
- 2.Qb5#
- 2.Qd5#
- 2.Qc7#
- 1...Rxe3
- 2.Qb5#
- 2.g4#
- 1...Rb2
- 2.Sc2#
- 2.Sc4#
- 2.Sg4#
- 2.Qd5#
- 2.Qc7#
- 1...Rc2
- 2.Sxc2#
- 2.Sc4#
- 2.Sg4#
- 2.Qd5#
- 1...Sf5
- 2.Sc4#
- 2.Sg4#
- 2.Qb5#
- 2.Qxf5#
- 2.Qd5#
- 1...e6
- 2.Qb5#
- 2.Qd6#
- 2.Qc7#
- 1...dxe3!
- threat
- 1.Sb4?
- threat
- 2.Sxd3#
- 2.Sc6#
- 1...Rc2
- 2.Sxd3#
- 2.Qd5#
- 1...Rd2
- 2.Sc6#
- 2.Qb5#
- 2.Qd5#
- 1...Bh4
- 2.Sxd3#
- 1...Bg5
- 2.Sxd3#
- 1...Bg7
- 2.Sxd3#
- 1...Bh8
- 2.Sxd3#
- 1...d2
- 2.Sd3#
- 2.Sc6#
- 1...e6!
- threat
- 1.Sf4?
- threat
- 2.Sxd3#
- 1...Rd2
- 2.Qb5#
- 2.Qd5#
- 1...d2
- 2.Sd3#
- 1...e6!
- threat
- 1.Sxe7?
- threat
- 2.Sc6#
- 2.Qd6#
- 2.Qc7#
- 1...Rc2
- 2.Qd5#
- 2.Qd6#
- 1...Bh4
- 2.Qd6#
- 2.Qc7#
- 1...Bg5
- 2.Qd6#
- 2.Qc7#
- 1...Bg7
- 2.Qd6#
- 2.Qc7#
- 1...Bh8
- 2.Qd6#
- 2.Qc7#
- 1...Sc4
- 2.Sc6#
- 2.Qb5#
- 2.Qd5#
- 2.g4#
- 1...Sd5
- 2.Sc6#
- 2.Qxd5#
- 2.Qd6#
- 1...Sef5
- 2.Sc6#
- 2.Qb5#
- 2.Qd5#
- 1...Shf5
- 2.Sc6#
- 1...Bxe7!
- threat
- 1.Sxe3?
- Keys
- 1.Qb5!
- threat
- 2.Sxe3#
- 1...Kf5
- 2.Sxe7#
- 1...Sxd5
- 2.g4#
- 1...Rb2
- 2.Sb4#
- 1...Rc2
- 2.Sc3#
- 1...Sd1
- 2.Sc3#
- 2.Se3#
- 2.Sb4#
- 2.Sf4#
- 2.Sxf6#
- 2.Sc7#
- 2.Sxe7#
- 2.g4#
- 1...Sf1
- 2.Sc3#
- 2.Se3#
- 2.Sb4#
- 2.Sf4#
- 2.Sxf6#
- 2.Sc7#
- 2.Sxe7#
- 1...Sc2
- 2.Sc3#
- 2.Se3#
- 2.Sb4#
- 2.Sf4#
- 2.Sxf6#
- 2.Sc7#
- 2.Sxe7#
- 2.g4#
- 1...Sg2
- 2.Sc3#
- 2.Se3#
- 2.Sb4#
- 2.Sf4#
- 2.Sxf6#
- 2.Sc7#
- 2.Sxe7#
- 1...Sc4
- 2.Sc3#
- 2.Se3#
- 2.Sb4#
- 2.Sf4#
- 2.Sxf6#
- 2.Sc7#
- 2.Sxe7#
- 2.g4#
- 1...Seg4
- 2.Sc3#
- 2.Se3#
- 2.Sb4#
- 2.Sf4#
- 2.Sxf6#
- 2.Sc7#
- 2.Sxe7#
- 1...Sef5
- 2.Sc3#
- 2.Se3#
- 2.Sb4#
- 2.Sf4#
- 2.Sxf6#
- 2.Sc7#
- 2.Sxe7#
- threat
- 1.Qb5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 4
- Sets
- R(a);N_GUARD,XR(A)::B(B)+P(D)
- S(c);P_SPINR(a)::B(B)+P(D)
- Tries
- Try
- S(F);XS(c)
- Threat
- DUALS(4)
- Refutation
- P(d);XS(F)
- Try
- S(F);
- Threat
- DUALS(2)
- Vars
- B(f);::S(F),XP(b)
- Refutation
- P(h);
- Try
- S(F);
- Threat
- S(F),XP(b)
- Vars
- P(b);::S(F)
- Refutation
- P(h);
- Try
- S(F);XP(h)
- Threat
- DUALS(3)
- Vars
- S(g);::S(F)
- Refutation
- B(f);XS(F)
- Try
- Actual
- Q(H);
- Threat
- QAR(H)+S(F),XS(c)
- Vars
- K(e);P-FLIGHT::QAR(H)+S(F),DCHECK,XP(h)
- S(c);P_SPINR(a),P_SPINS(c),XS(F)::B(B)+P(D)
- R(a);P_SPINS(c)::QAR(H)+S(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).