MESON Chess Problem Database
Problem Display
PID: 46823 (1B6/2N4b/K1p1Qp1q/p1r1Pp1P/3p1k2/4N3/8/b3RnRB w - - 0 1)
Jonsson, Gustav
Problem (Zagreb), 1960
#2
10 + 11
| 3749 | FIDE Album (1959-1961) | 1966 |
SOLUTION
- SOUND
- Sets
- 1...Bg8
- 2.Qxf5#
- 1...dxe3
- 2.Rexf1#
- 1...fxe5
- 2.Qxh6#
- 1...Bg8
- Tries
- 1.Qa2?
- threat
- 2.Se6#
- 1...Kxe5
- 2.Sb5#
- 2.Se6#
- 2.Sa8#
- 2.Se8#
- 1...fxe5
- 2.Qf2#
- 1...Bg8!
- threat
- 1.Qb3?
- threat
- 2.Se6#
- 1...Kxe5
- 2.Sb5#
- 2.Se6#
- 2.Sa8#
- 2.Se8#
- 1...fxe5
- 2.Rexf1#
- 1...Bg8!
- threat
- 1.Qc4?
- threat
- 2.Se6#
- 1...Kxe5
- 2.Sb5#
- 2.Se6#
- 2.Sa8#
- 2.Se8#
- 1...fxe5
- 2.Qxf1#
- 1...Bg8!
- threat
- 1.Qd5?
- threat
- 2.Se6#
- 1...fxe5
- 2.Qf3#
- 1...Bg8!
- threat
- 1.Qd7?
- threat
- 2.Se6#
- 1...Kxe5
- 2.Sb5#
- 2.Scd5#
- 2.Se6#
- 2.Sa8#
- 2.Se8#
- 1...Bg8
- 2.Qxf5#
- 1...fxe5!
- threat
- 1.Qc8?
- threat
- 2.Se6#
- 1...Kxe5
- 2.Sb5#
- 2.Scd5#
- 2.Se6#
- 2.Sa8#
- 2.Se8#
- 1...Bg8
- 2.Qxf5#
- 1...fxe5!
- threat
- 1.Qg8?
- threat
- 2.Se6#
- 1...Kxe5
- 2.Sb5#
- 2.Scd5#
- 2.Se6#
- 2.Sa8#
- 2.Se8#
- 1...fxe5
- 2.Rgxf1#
- 1...Bxg8!
- threat
- 1.Qd6?
- threat
- 2.Se6#
- 1...fxe5
- 2.Qxh6#
- 1...Bg8!
- threat
- 1.Qxf6?
- threat
- 2.Se6#
- 2.Rg4#
- 1...Qxh5
- 2.Se6#
- 1...Sxe3
- 2.Se6#
- 1...dxe3
- 2.Se6#
- 2.Rexf1#
- 1...Bg8
- 2.Rg4#
- 2.Qxf5#
- 1...Qg5
- 2.Se6#
- 1...Qg7
- 2.Se6#
- 1...Qg6
- 2.Se6#
- 1...Sh2
- 2.Se6#
- 1...Sg3
- 2.Se6#
- 1...Qxf6!
- threat
- 1.Qe7?
- threat
- 2.Se6#
- 1...fxe5
- 2.Qh4#
- 1...Bg8!
- threat
- 1.Qa2?
- Keys
- 1.Qf7!
- threat
- 2.Se6#
- 1...Kxe5
- 2.Sb5#
- 2.Scd5#
- 2.Se6#
- 2.Sa8#
- 2.Se8#
- 1...fxe5
- 2.Rg4#
- threat
- 1.Qf7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 0
- REMOVED MATES = 2
- Sets
- B(k);N_GUARD::QAR1(H),XP(g)
- P(c);SBLOCK,XS(D)::R(A),XS(b)
- P(i);OGATE,SBLOCK,XP(E)::QAB(H),XQ(j)
- Tries
- Try
- Q(H);
- Threat
- S(I)
- Vars
- P(i);SBLOCK,XP(E)::QAR2(H)
- Refutation
- B(k);
- Try
- Q(H);
- Threat
- S(I)
- Vars
- P(i);SBLOCK,XP(E)::R(A),XS(b)
- Refutation
- B(k);
- Try
- Q(H);P_PINP(c)
- Threat
- S(I)
- Vars
- P(i);SBLOCK,XP(E)::QAR(H),XS(b)
- Refutation
- B(k);
- Try
- Q(H);
- Threat
- S(I)
- Vars
- P(i);SBLOCK,XP(E)::QAR1(H)
- Refutation
- B(k);
- Try
- Q(H);
- Threat
- S(I)
- Vars
- B(k);N_GUARD::QAR1(H),XP(g)
- Refutation
- P(i);XP(E)
- Try
- Q(H);
- Threat
- S(I)
- Vars
- B(k);N_GUARD::QAR1(H),XP(g)
- Refutation
- P(i);XP(E)
- Try
- Q(H);
- Threat
- S(I)
- Vars
- P(i);SBLOCK,XP(E)::R(B),XS(b)
- Refutation
- B(k);XQ(H)
- Try
- Q(H);
- Threat
- S(I)
- Vars
- P(i);OGATE,P_SPINP(i),SBLOCK,XP(E)::QAB(H),XQ(j)
- Refutation
- B(k);
- Try
- Q(H);P_PINP(g),XP(i)
- Threat
- DUALS(2)
- Vars
- Q(j);XP(F)::S(I)
- S(b);XS(D)::S(I)
- Q(j);::S(I)
- S(b);::S(I)
- Refutation
- Q(j);N_SPINP(g),XQ(H)
- Try
- Q(H);
- Threat
- S(I)
- Vars
- P(i);OGATE,SBLOCK,XP(E)::QAR2(H)
- Refutation
- B(k);
- Try
- Actual
- Q(H);
- Threat
- S(I)
- Vars
- P(i);P_SPINP(g),SBLOCK,XP(E)::R1(B)
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).