MESON Chess Problem Database
Problem Display
PID: 274091 (4r3/q1p5/pB4p1/4Np2/6P1/5Qp1/6Bk/5K1b w - - 0 1)
Korponai, Jozsef
Zurcher Woche, 1962
#2
6 + 9
| 15601 | Albrecht-Leiss-Degener Collection | 2024 |
SOLUTION
- SOUND
- Sets
- 1...Qb8
- 2.Bg1#
- 1...Qb7
- 2.Bg1#
- 1...Qa8
- 2.Bg1#
- 1...Bxg2+
- 2.Qxg2#
- 1...fxg4
- 2.Sxg4#
- 1...Qb8
- Tries
- 1.Bxa7?
- threat
- 2.Bg1#
- 1...Bxg2+
- 2.Qxg2#
- 1...c5!
- threat
- 1.Qe2?
- threat
- 2.Sf3#
- 1...Bxg2+
- 2.Qxg2#
- 1...fxg4
- 2.Sxg4#
- 1...Qb7
- 2.Bg1#
- 1...Qa8
- 2.Bg1#
- 1...Rxe5!
- threat
- 1.Qd5?
- threat
- 2.Sf3#
- 1...Bxg2+
- 2.Qxg2#
- 1...fxg4
- 2.Sxg4#
- 1...Rxe5!
- threat
- 1.Qc6?
- threat
- 2.Sf3#
- 1...Bxg2+
- 2.Qxg2#
- 1...fxg4
- 2.Sxg4#
- 1...Rxe5!
- threat
- 1.Qb7?
- threat
- 2.Sf3#
- 1...Bxg2+
- 2.Qxg2#
- 1...Qxb7
- 2.Bg1#
- 1...fxg4
- 2.Sxg4#
- 1...Rxe5!
- threat
- 1.Qf2?
- threat
- 2.Sf3#
- 2.Qg1#
- 1...Bxg2+
- 2.Qxg2#
- 1...Qxb6
- 2.Sf3#
- 1...Rxe5
- 2.Qg1#
- 1...fxg4
- 2.Sxg4#
- 2.Qg1#
- 1...Qb7
- 2.Qg1#
- 1...Qa8
- 2.Qg1#
- 1...gxf2!
- threat
- 1.Qe3?
- threat
- 2.Sf3#
- 2.Qg1#
- 2.Qh6#
- 1...Qxb6
- 2.Sf3#
- 2.Qh6#
- 1...Rxe5
- 2.Qg1#
- 2.Qh6#
- 1...fxg4
- 2.Sxg4#
- 2.Qg1#
- 2.Qh6#
- 1...Qb7
- 2.Qg1#
- 2.Qh6#
- 1...Qa8
- 2.Qg1#
- 2.Qh6#
- 1...Rh8
- 2.Sf3#
- 2.Qg1#
- 1...f4
- 2.Sf3#
- 2.Qg1#
- 1...g5
- 2.Sf3#
- 2.Qg1#
- 1...Bxg2+!
- threat
- 1.Qf4?
- threat
- 2.Sf3#
- 2.Qh6#
- 1...Rxe5
- 2.Qh6#
- 1...fxg4
- 2.Sxg4#
- 2.Qh6#
- 1...Qb7
- 2.Bg1#
- 2.Qh6#
- 1...Qa8
- 2.Bg1#
- 2.Qh6#
- 1...Rh8
- 2.Sf3#
- 1...g5
- 2.Sf3#
- 1...Bxg2+!
- threat
- 1.gxf5?
- threat
- 2.Sg4#
- 1...Bxg2+
- 2.Qxg2#
- 1...gxf5
- 2.Qh5#
- 1...Rxe5!
- threat
- 1.Bxa7?
- Keys
- 1.Qa8!
- threat
- 2.Sf3#
- 1...Bxg2+
- 2.Qxg2#
- 1...Qxa8
- 2.Bg1#
- 1...Rxe5
- 2.Qh8#
- 1...fxg4
- 2.Sxg4#
- 1...Qb7
- 2.Bg1#
- threat
- 1.Qa8!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 1
- Sets
- Q(g);N_GUARD::B(F)
- B(a);CHECK,OGATE,XB(B)::QAR1(C),XB(a)
- P(d);XP(D)::S(E),XP(d)
- Tries
- Try
- B(F);XQ(g)
- Threat
- B(F)
- Vars
- B(a);CHECK,OGATE,XB(B)::QAR1(C),XB(a)
- Refutation
- P(h);
- Try
- Q(C);
- Threat
- S(E)
- Vars
- B(a);CHECK,OGATE,P_SPINB(a),XB(B)::QAR1(C),XB(a)
- P(d);XP(D)::S(E),XP(d)
- Q(g);N_GUARD::B(F)
- Refutation
- R(i);XS(E)
- Try
- Q(C);
- Threat
- S(E)
- Vars
- B(a);CHECK,OGATE,XB(B)::QAR1(C),XB(a)
- P(d);XP(D)::S(E),XP(d)
- Refutation
- R(i);XS(E)
- Try
- Q(C);
- Threat
- S(E)
- Vars
- B(a);CHECK,OGATE,XB(B)::QAR1(C),XB(a)
- P(d);XP(D)::S(E),XP(d)
- Refutation
- R(i);XS(E)
- Try
- Q(C);
- Threat
- S(E)
- Vars
- B(a);CHECK,OGATE,XB(B)::QAR1(C),XB(a)
- Q(g);N_GUARD,XQ(C)::B(F)
- P(d);XP(D)::S(E),XP(d)
- Refutation
- R(i);XS(E)
- Try
- Q(C);
- Threat
- DUALS(2)
- Vars
- B(a);CHECK,OGATE,P_SPINB(a),XB(B)::QAR1(C),XB(a)
- Q(g);XB(F)::S(E)
- R(i);XS(E)::QAB1(C)
- Q(g);::QAB1(C)
- Refutation
- P(c);XQ(C)
- Try
- Q(C);
- Threat
- DUALS(3)
- Refutation
- B(a);CHECK,XB(B)
- Try
- Q(C);P_PINP(c)
- Threat
- DUALS(2)
- Vars
- R(i);XS(E)::QAR(C)
- R(i);::S(E)
- P(f);::S(E)
- Refutation
- B(a);CHECK,XB(B)
- Try
- P(D);XP(d)
- Threat
- S(E)
- Vars
- B(a);CHECK,OGATE,XB(B)::QAR1(C),XB(a)
- P(f);N_GUARD,XP(D)::QAR(C)
- Refutation
- R(i);XS(E)
- Try
- Actual
- Q(C);
- Threat
- S(E)
- Vars
- B(a);CHECK,OGATE,XB(B)::QAR1(C),XB(a)
- Q(g);N_GUARD,XQ(C)::B(F)
- R(i);OGATE,XS(E)::QAR(C)
- P(d);XP(D)::S(E),XP(d)
- Q(g);N_GUARD::B(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).