MESON Chess Problem Database
Problem Display
PID: 82252 (1K3b2/BpQN1R2/r5P1/4NP1q/2P1k3/1r2ppPB/2n5/3R4 w - - 0 1)
Ahues, Herbert Siegfried Oskar
Deutsche Schachzeitung, 1983
#2
12 + 9
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Qxf5
- 2.Bxf5#
- 1...Ra1
- 2.Sf6#
- 1...Ra2
- 2.Sf6#
- 1...Ra3
- 2.Sf6#
- 1...Ra4
- 2.Sf6#
- 1...Ra5
- 2.Sf6#
- 1...Rf6
- 2.Sxf6#
- 1...Rxa7
- 2.Sf6#
- 1...Bc5
- 2.Sxc5#
- 1...Bh6
- 2.Sc5#
- 1...Bg7
- 2.Sc5#
- 1...Sa1
- 2.Rd4#
- 1...Se1
- 2.Rd4#
- 1...Sa3
- 2.Rd4#
- 1...Sb4
- 2.Rd4#
- 1...Sd4
- 2.Rxd4#
- 1...b6
- 2.Sf6#
- 2.Qc6#
- 2.Qb7#
- 1...Qxf5
- Tries
- 1.Sg4?
- threat
- 2.Qf4#
- 2.Qe5#
- 1...Qxg4
- 2.Qe5#
- 1...f2
- 2.Bg2#
- 2.Qf4#
- 1...Qg5
- 2.Qe5#
- 1...Qh6
- 2.Qe5#
- 1...Qh8
- 2.Qf4#
- 1...Rb5
- 2.Qf4#
- 1...Ra5
- 2.Sgf6#
- 2.Qf4#
- 1...Rd6
- 2.Sc5#
- 1...Re6
- 2.Qf4#
- 1...Bd6
- 2.Sgf6#
- 1...Bh6
- 2.Sc5#
- 2.Qe5#
- 1...Bg7
- 2.Sc5#
- 2.Qf4#
- 1...Qxf5!
- threat
- 1.Sc6?
- threat
- 2.Sf6#
- 2.Qf4#
- 2.Qe5#
- 1...Qxg6
- 2.Qf4#
- 2.Qe5#
- 1...Qxh3
- 2.Qf4#
- 2.Qe5#
- 1...Qxf5
- 2.Bxf5#
- 1...Rxc6
- 2.Qf4#
- 2.Qe5#
- 1...f2
- 2.Qf4#
- 1...Qg4
- 2.Qe5#
- 1...Qh4
- 2.Qe5#
- 1...Qg5
- 2.Qe5#
- 1...Qh6
- 2.Sf6#
- 2.Qe5#
- 1...Qh8
- 2.Qf4#
- 1...Rb5
- 2.Sf6#
- 2.Qf4#
- 1...Ra5
- 2.Sf6#
- 2.Qf4#
- 1...Bd6
- 2.Sf6#
- 1...Bh6
- 2.Sc5#
- 2.Sf6#
- 2.Re7#
- 2.Qe5#
- 1...Be7
- 2.Rxe7#
- 2.Qf4#
- 2.Qe5#
- 1...Bg7
- 2.Sc5#
- 2.Qf4#
- 1...bxc6+!
- threat
- 1.Sg4?
- Keys
- 1.Sd3!
- threat
- 2.Qf4#
- 2.Qe5#
- 1...Qxf5
- 2.Bxf5#
- 1...f2
- 2.Qf4#
- 1...Qg4
- 2.Qe5#
- 1...Qh4
- 2.Qe5#
- 1...Qg5
- 2.Qe5#
- 1...Qh6
- 2.Qe5#
- 1...Qh8
- 2.Qf4#
- 1...Rb5
- 2.Qf4#
- 1...Ra5
- 2.Sf6#
- 2.Qf4#
- 1...Rd6
- 2.S3c5#
- 1...Re6
- 2.Qf4#
- 1...Bd6
- 2.Sf6#
- 1...Bh6
- 2.S3c5#
- 2.Qe5#
- 1...Bg7
- 2.S3c5#
- 2.Qf4#
- threat
- 1.Sd3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 10
- REMOVED MATES = 15
- Sets
- Q(f);OGATE,XP(F)::B(C),XQ(f)
- R(g);N_GUARD::S(J)
- R(g);N_GUARD::S(J),XR(g)
- R(g);N_GUARD,XB(H)::S(J)
- B(i);N_GUARD::S(J),XB(i)
- B(i);N_GUARD::S(J)
- S(a);N_GUARD::R1(A)
- S(a);N_GUARD::R1(A),XS(a)
- Tries
- Try
- S(E);
- Threat
- DUALS(2)
- Vars
- Q(f);XS(E)::QAR1(I)
- Q(f);::QAR1(I)
- R(b);::QAR1(I)
- R(g);S_CUTB(i)::S(J)
- R(g);::QAR1(I)
- B(i);P_PINQ(I),S_CUTR(g)::S(E)
- Refutation
- Q(f);XP(F)
- Try
- S(E);
- Threat
- DUALS(3)
- Vars
- Q(f);OGATE,XP(F)::B(C),XQ(f)
- P(d);::QAR1(I)
- Q(f);::QAR1(I)
- B(i);P_PINQ(I)::S(J)
- Refutation
- P(h);CHECK,XS(E)
- Try
- Actual
- S(E);
- Threat
- DUALS(2)
- Vars
- Q(f);OGATE,XP(F)::B(C),XQ(f)
- P(d);::QAR1(I)
- Q(f);::QAR1(I)
- R(b);::QAR1(I)
- R(g);S_CUTB(i)::S(E)
- R(g);::QAR1(I)
- B(i);P_PINQ(I),S_CUTR(g)::S(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).