MESON Chess Problem Database
Problem Display
PID: 176420 (bbQ2n2/4R1Np/3P3P/1P1kpNKP/2p1p3/2PnB3/8/8 w - - 0 1)
Forsberg, Rudolf
Jonsson, Christer
Schach-Echo, 1984
#2
11 + 9
| 6490 | yacpdb | 2018 |
SOLUTION
- SOUND
- Sets
- 1...Bc6
- 2.Qxc6#
- 1...Bb7
- 2.Qxb7#
- 1...Bxd6
- 2.Qxa8#
- 1...Ba7
- 2.Qxa8#
- 1...Bc7
- 2.Qxa8#
- 1...Sc1
- 2.Qc5#
- 1...Se1
- 2.Qc5#
- 1...Sb2
- 2.Qc5#
- 1...Sf2
- 2.Qc5#
- 1...Sb4
- 2.Qc5#
- 1...Sf4
- 2.Qc5#
- 1...Sc5
- 2.Qxc5#
- 1...Se6+
- 2.Qxe6#
- 1...Sg6
- 2.Qe6#
- 2.Qg8#
- 1...Sd7
- 2.Qg8#
- 1...Bc6
- Tries
- 1.Kg4?
- 1...Bxd6
- 2.Qxa8#
- 1...Bc6
- 2.Qxc6#
- 1...Bb7
- 2.Qxb7#
- 1...Ba7
- 2.Qxa8#
- 1...Bc7
- 2.Qxa8#
- 1...Sc1
- 2.Qc5#
- 1...Se1
- 2.Qc5#
- 1...Sb2
- 2.Qc5#
- 1...Sb4
- 2.Qc5#
- 1...Sf4
- 2.Qc5#
- 1...Sc5
- 2.Qxc5#
- 1...Se6
- 2.Qxe6#
- 1...Sg6
- 2.Qe6#
- 2.Qg8#
- 1...Sd7
- 2.Qg8#
- 1...Sf2+!
- 1...Bxd6
- 1.Kh4?
- 1...Bxd6
- 2.Qxa8#
- 1...Bc6
- 2.Qxc6#
- 1...Bb7
- 2.Qxb7#
- 1...Ba7
- 2.Qxa8#
- 1...Bc7
- 2.Qxa8#
- 1...Sc1
- 2.Qc5#
- 1...Se1
- 2.Qc5#
- 1...Sb2
- 2.Qc5#
- 1...Sf2
- 2.Qc5#
- 1...Sb4
- 2.Qc5#
- 1...Sf4
- 2.Qc5#
- 1...Sc5
- 2.Qxc5#
- 1...Se6
- 2.Qxe6#
- 1...Sd7
- 2.Qg8#
- 1...Sg6+!
- 1...Bxd6
- 1.Kf6?
- 1...Bxd6
- 2.Qxa8#
- 1...Bc6
- 2.Qxc6#
- 1...Bb7
- 2.Qxb7#
- 1...Ba7
- 2.Qxa8#
- 1...Bc7
- 2.Qxa8#
- 1...Sc1
- 2.Rxe5#
- 2.Qc5#
- 1...Se1
- 2.Rxe5#
- 2.Qc5#
- 1...Sb2
- 2.Rxe5#
- 2.Qc5#
- 1...Sf2
- 2.Rxe5#
- 2.Qc5#
- 1...Sb4
- 2.Rxe5#
- 2.Qc5#
- 1...Sf4
- 2.Rxe5#
- 2.Qc5#
- 1...Sc5
- 2.Rxe5#
- 2.Qxc5#
- 1...Se6
- 2.Qxe6#
- 1...Sg6
- 2.Qe6#
- 2.Qg8#
- 1...Sd7+!
- 1...Bxd6
- 1.Se8?
- threat
- 2.Sf6#
- 1...Se6+
- 2.Qxe6#
- 1...Sd7!
- threat
- 1.Bb6?
- 1...Se6+
- 2.Qxe6#
- 1...Bxd6
- 2.Se3#
- 2.Qxa8#
- 1...Bb7
- 2.Qxb7#
- 1...Bc6
- 2.Qxc6#
- 1...Ba7
- 2.Qxa8#
- 1...Bc7
- 2.Qxa8#
- 1...Sc1
- 2.Qc5#
- 1...Se1
- 2.Qc5#
- 1...Sb2
- 2.Qc5#
- 1...Sf2
- 2.Qc5#
- 1...Sb4
- 2.Qc5#
- 1...Sf4
- 2.Qc5#
- 1...Sc5
- 2.Qxc5#
- 1...Sg6
- 2.Qe6#
- 2.Qg8#
- 1...Sd7
- 2.Qg8#
- 1...e3!
- 1...Se6+
- 1.Rxe5+?
- 1...Sxe5
- 2.Qc5#
- 1...Kxe5!
- 1...Sxe5
- 1.Re6?
- threat
- 2.Se7#
- 1...Sxe6+
- 2.Qxe6#
- 1...Bxd6
- 2.Rxd6#
- 2.Qxa8#
- 1...Sg6!
- threat
- 1.Rb7?
- threat
- 2.Qc6#
- 1...Se6+
- 2.Qxe6#
- 1...Bxb7
- 2.Qxb7#
- 1...Sb4
- 2.Qc5#
- 1...Bc7!
- threat
- 1.Rc7?
- 1...Se6+
- 2.Qxe6#
- 1...Bxc7
- 2.Qxa8#
- 1...Bb7
- 2.Qxb7#
- 1...Ba7
- 2.Qxa8#
- 1...Sc1
- 2.Rc5#
- 1...Se1
- 2.Rc5#
- 1...Sb2
- 2.Rc5#
- 1...Sf2
- 2.Rc5#
- 1...Sb4
- 2.Rc5#
- 1...Sf4
- 2.Rc5#
- 1...Sc5
- 2.Rxc5#
- 1...Sg6
- 2.Qe6#
- 2.Qg8#
- 1...Sd7
- 2.Qg8#
- 1...Bc6!
- 1...Se6+
- 1.Rd7?
- threat
- 2.Se7#
- 1...Sxd7
- 2.Qg8#
- 1...Sg6
- 2.Qg8#
- 1...Se6+!
- threat
- 1.Rf7?
- 1...Se6+
- 2.Qxe6#
- 1...Bxd6
- 2.Qxa8#
- 1...Bb7
- 2.Qxb7#
- 1...Bc6
- 2.Qxc6#
- 1...Ba7
- 2.Qxa8#
- 1...Bc7
- 2.Qxa8#
- 1...Sc1
- 2.Qc5#
- 1...Se1
- 2.Qc5#
- 1...Sb2
- 2.Qc5#
- 1...Sf2
- 2.Qc5#
- 1...Sb4
- 2.Qc5#
- 1...Sf4
- 2.Qc5#
- 1...Sc5
- 2.Qxc5#
- 1...Sg6
- 2.Qe6#
- 1...Sd7!
- 1...Se6+
- 1.Re8?
- 1...Se6+
- 2.Qxe6#
- 1...Bxd6
- 2.Qxa8#
- 1...Bc6
- 2.Qxc6#
- 1...Bb7
- 2.Qxb7#
- 1...Ba7
- 2.Qxa8#
- 1...Bc7
- 2.Qxa8#
- 1...Sc1
- 2.Qc5#
- 1...Se1
- 2.Qc5#
- 1...Sb2
- 2.Qc5#
- 1...Sf2
- 2.Qc5#
- 1...Sb4
- 2.Qc5#
- 1...Sf4
- 2.Qc5#
- 1...Sc5
- 2.Qxc5#
- 1...Sg6
- 2.Qe6#
- 1...Sd7!
- 1...Se6+
- 1.d7?
- 1...Sxd7
- 2.Qg8#
- 1...Bc6
- 2.Qxc6#
- 1...Bb7
- 2.Qxb7#
- 1...Bd6
- 2.Qxa8#
- 1...Ba7
- 2.Qxa8#
- 1...Bc7
- 2.Qxa8#
- 1...Sc1
- 2.Qc5#
- 1...Se1
- 2.Qc5#
- 1...Sb2
- 2.Qc5#
- 1...Sf2
- 2.Qc5#
- 1...Sb4
- 2.Qc5#
- 1...Sf4
- 2.Qc5#
- 1...Sc5
- 2.Qxc5#
- 1...Sg6
- 2.Qg8#
- 1...Se6+!
- 1...Sxd7
- 1.Kg4?
- Keys
- 1.Ra7!
- 1...Se6+
- 2.Qxe6#
- 1...Bxd6
- 2.Qxa8#
- 1...Bxa7
- 2.Qxa8#
- 1...Bb7
- 2.Qxb7#
- 1...Bc6
- 2.Qxc6#
- 1...Bc7
- 2.Qxa8#
- 1...Sc1
- 2.Qc5#
- 1...Se1
- 2.Qc5#
- 1...Sb2
- 2.Qc5#
- 1...Sf2
- 2.Qc5#
- 1...Sb4
- 2.Qc5#
- 1...Sf4
- 2.Qc5#
- 1...Sc5
- 2.Qxc5#
- 1...Sg6
- 2.Qe6#
- 2.Qg8#
- 1...Sd7
- 2.Qg8#
- 1...Se6+
- 1.Ra7!
FEATURES
- Static
- TYPE = WAITER
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- B(g);N_GUARD::QAB1(K),XB(g)
- B(g);N_GUARD::QAB(K),XB(g)
- B(h);OGATE,XP(G)::QAB(K),XB(g)
- B(h);OGATE::QAB(K),XB(g)
- S(a);N_GUARD::QAR1(K)
- S(a);N_GUARD::QAR1(K),XS(a)
- S(i);CHECK,N_GUARD::QAB1(K),XS(i)
- S(i);OGATE::QAB(K)
- Tries
- Try
- K(E);P-FLIGHT
- Vars
- B(h);OGATE,XP(G)::QAB(K),XB(g)
- B(g);N_GUARD::QAB1(K),XB(g)
- B(g);N_GUARD::QAB(K),XB(g)
- B(h);OGATE::QAB(K),XB(g)
- S(a);N_GUARD::QAR1(K)
- S(a);N_GUARD::QAR1(K),XS(a)
- S(i);N_GUARD::QAB1(K),XS(i)
- S(i);OGATE::QAB(K)
- Refutation
- S(a);CHECK
- Try
- K(E);S_FLIGHT
- Vars
- B(h);OGATE,XP(G)::QAB(K),XB(g)
- B(g);N_GUARD::QAB1(K),XB(g)
- B(g);N_GUARD::QAB(K),XB(g)
- B(h);OGATE::QAB(K),XB(g)
- S(a);N_GUARD::QAR1(K)
- S(a);N_GUARD::QAR1(K),XS(a)
- S(i);N_GUARD::QAB1(K),XS(i)
- S(i);OGATE::QAB(K)
- Refutation
- S(i);CHECK
- Try
- K(E);S_FLIGHT
- Vars
- B(h);OGATE,XP(G)::QAB(K),XB(g)
- B(g);N_GUARD::QAB1(K),XB(g)
- B(g);N_GUARD::QAB(K),XB(g)
- B(h);OGATE::QAB(K),XB(g)
- S(i);N_GUARD::QAB1(K),XS(i)
- Refutation
- S(i);CHECK
- Try
- S(J);
- Threat
- S(J)
- Vars
- S(i);CHECK,N_GUARD::QAB1(K),XS(i)
- Refutation
- S(i);
- Try
- B(B);
- Vars
- S(i);CHECK,N_GUARD::QAB1(K),XS(i)
- B(g);N_GUARD::QAB(K),XB(g)
- B(g);N_GUARD::QAB1(K),XB(g)
- B(h);OGATE::QAB(K),XB(g)
- S(a);N_GUARD::QAR1(K)
- S(a);N_GUARD::QAR1(K),XS(a)
- S(i);OGATE::QAB(K)
- Refutation
- P(c);
- Try
- R(I);CHECK,XP(e)
- Vars
- S(a);SBLOCK,XR(I)::QAR1(K)
- Refutation
- K(d);P-FLIGHT,XR(I)
- Try
- R(I);
- Threat
- S(D)
- Vars
- S(i);CHECK,OGATE,XR(I)::QAB1(K),XS(i)
- Refutation
- S(i);
- Try
- R(I);
- Threat
- QAB1(K)
- Vars
- S(i);CHECK,N_GUARD::QAB1(K),XS(i)
- B(g);OGATE,XR(I)::QAB(K),XB(g)
- S(a);N_GUARD::QAR1(K)
- Refutation
- B(h);
- Try
- R(I);
- Vars
- S(i);CHECK,N_GUARD::QAB1(K),XS(i)
- B(h);OGATE,XR(I)::QAB(K),XB(g)
- B(g);N_GUARD::QAB(K),XB(g)
- B(h);OGATE::QAB(K),XB(g)
- S(a);N_GUARD::R1(I)
- S(a);N_GUARD::R1(I),XS(a)
- S(i);OGATE::QAB(K)
- Refutation
- B(g);
- Try
- R(I);
- Threat
- S(D)
- Vars
- S(i);OGATE,XR(I)::QAB(K)
- S(i);OGATE::QAB(K)
- Refutation
- S(i);CHECK
- Try
- R(I);
- Vars
- S(i);CHECK,N_GUARD::QAB1(K),XS(i)
- B(h);OGATE,XP(G)::QAB(K),XB(g)
- B(g);N_GUARD::QAB(K),XB(g)
- B(g);N_GUARD::QAB1(K),XB(g)
- B(h);OGATE::QAB(K),XB(g)
- S(a);N_GUARD::QAR1(K)
- S(a);N_GUARD::QAR1(K),XS(a)
- S(i);N_GUARD::QAB1(K)
- Refutation
- S(i);
- Try
- R(I);
- Vars
- S(i);CHECK,N_GUARD::QAB1(K),XS(i)
- B(h);OGATE,XP(G)::QAB(K),XB(g)
- B(g);N_GUARD::QAB1(K),XB(g)
- B(g);N_GUARD::QAB(K),XB(g)
- B(h);OGATE::QAB(K),XB(g)
- S(a);N_GUARD::QAR1(K)
- S(a);N_GUARD::QAR1(K),XS(a)
- S(i);N_GUARD::QAB1(K)
- Refutation
- S(i);
- Try
- P(G);
- Vars
- S(i);OGATE,XP(G)::QAB(K)
- B(g);N_GUARD::QAB1(K),XB(g)
- B(g);N_GUARD::QAB(K),XB(g)
- B(h);OGATE::QAB(K),XB(g)
- S(a);N_GUARD::QAR1(K)
- S(a);N_GUARD::QAR1(K),XS(a)
- S(i);OGATE::QAB(K)
- Refutation
- S(i);CHECK
- Try
- Actual
- R(I);
- Vars
- S(i);CHECK,N_GUARD::QAB1(K),XS(i)
- B(h);OGATE,XP(G)::QAB(K),XB(g)
- B(h);OGATE,XR(I)::QAB(K),XB(g)
- B(g);N_GUARD::QAB(K),XB(g)
- B(g);N_GUARD::QAB1(K),XB(g)
- B(h);OGATE::QAB(K),XB(g)
- S(a);N_GUARD::QAR1(K)
- S(a);N_GUARD::QAR1(K),XS(a)
- S(i);OGATE::QAB(K)
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).