MESON Chess Problem Database
Problem Display
PID: 53020 (3KBb1q/4p2p/pp2k3/3R1p1N/3PP3/Bb6/2N2p2/5Q2 w - - 0 1)
Gabor, Nicholas
The Chess Review, 1933
#2
9 + 10
| 56 | The Problemist | 2005 |
SOLUTION
- SOUND
- Sets
- 1...Qxd4
- 2.Sxd4#
- 1...Qe5
- 2.Rxe5#
- 1...Qf6
- 2.Sf4#
- 1...Qg8
- 2.Re5#
- 1...f4
- 2.Qh3#
- 1...Qxd4
- Tries
- 1.Se3?
- threat
- 2.exf5#
- 1...fxe4
- 2.Qh3#
- 1...Qe5
- 2.Rxe5#
- 1...Qf6
- 2.Sf4#
- 1...f4
- 2.Qh3#
- 1...Bc2!
- threat
- 1.Bxe7?
- threat
- 2.Sf4#
- 2.Rd6#
- 1...Qxd4
- 2.Sxd4#
- 2.Sf4#
- 1...Bxd5
- 2.Sf4#
- 1...fxe4
- 2.Sf4#
- 1...Qe5
- 2.Rxe5#
- 1...Bh6
- 2.Rd6#
- 1...f4
- 2.Sxf4#
- 2.Rd6#
- 2.Qh3#
- 1...Bxe7+!
- threat
- 1.Rb5?
- threat
- 2.Rxb6#
- 2.exf5#
- 1...Qxd4+
- 2.Sxd4#
- 1...Bxc2
- 2.Rxb6#
- 2.Qc4#
- 1...fxe4
- 2.Qh3#
- 1...Qe5
- 2.Rxe5#
- 1...Qf6
- 2.Sf4#
- 2.Rxb6#
- 1...Ba4
- 2.Qc4#
- 2.exf5#
- 1...Bd5
- 2.exd5#
- 1...f4
- 2.Rxb6#
- 2.Qh3#
- 1...axb5!
- threat
- 1.Rxf5?
- threat
- 2.Sf4#
- 2.Bd7#
- 2.Bf7#
- 1...Qxd4+
- 2.Sxd4#
- 1...Qe5
- 2.Bd7#
- 2.Bf7#
- 2.Rxe5#
- 1...Qf6
- 2.Sf4#
- 1...Qg7
- 2.Sf4#
- 2.Bd7#
- 1...Qg8
- 2.Sf4#
- 2.Bd7#
- 2.Re5#
- 1...Ba4
- 2.Sf4#
- 2.Bf7#
- 2.Qc4#
- 2.d5#
- 1...Bg7
- 2.Sf4#
- 1...Bh6!
- threat
- 1.Qc4?
- threat
- 2.Re5#
- 2.Rd6#
- 2.Qc6#
- 2.Qc8#
- 2.exf5#
- 1...Qxd4
- 2.Sxd4#
- 2.Qc6#
- 2.Qc8#
- 2.exf5#
- 1...Bxc2
- 2.Ra5#
- 2.Rb5#
- 2.Re5#
- 2.Rxf5#
- 2.Rd6#
- 2.Rd7#
- 2.Qc6#
- 2.Qc8#
- 1...fxe4
- 2.Re5#
- 2.Qc6#
- 1...f1Q
- 2.Re5#
- 2.Rd6#
- 2.Qc6#
- 2.Qc8#
- 1...f1R
- 2.Re5#
- 2.Rd6#
- 2.Qc6#
- 2.Qc8#
- 1...Qe5
- 2.Rxe5#
- 2.Rd6#
- 2.Qc8#
- 1...Qf6
- 2.Sf4#
- 2.Re5#
- 2.Rd6#
- 2.Qc6#
- 2.Qc8#
- 1...Ba4
- 2.Ra5#
- 2.Rb5#
- 2.Re5#
- 2.Rxf5#
- 2.Rd6#
- 2.Rd7#
- 2.exf5#
- 1...f4
- 2.Re5#
- 2.Rd6#
- 2.Qc6#
- 2.Qc8#
- 1...Bxc4!
- threat
- 1.Qb5?
- threat
- 2.Qc6#
- 2.Qd7#
- 2.Qxb6#
- 2.exf5#
- 1...Qxd4
- 2.Sxd4#
- 2.Qc6#
- 2.Qd7#
- 2.exf5#
- 1...Bxc2
- 2.Qc6#
- 2.Qd7#
- 2.Qxb6#
- 1...Bxd5
- 2.Qd7#
- 2.Qxd5#
- 2.exd5#
- 1...fxe4
- 2.Qc6#
- 2.Qd7#
- 1...f1Q
- 2.Qc6#
- 2.Qd7#
- 2.Qxb6#
- 1...f1R
- 2.Qc6#
- 2.Qd7#
- 2.Qxb6#
- 1...Qe5
- 2.Rxe5#
- 2.Qd7#
- 1...Qf6
- 2.Sf4#
- 2.Qc6#
- 2.Qd7#
- 2.Qxb6#
- 1...Ba4
- 2.exf5#
- 1...f4
- 2.Qc6#
- 2.Qd7#
- 2.Qxb6#
- 1...axb5!
- threat
- 1.Qxf2?
- threat
- 2.Qxf5#
- 1...fxe4
- 2.Bf7#
- 2.Qf5#
- 2.Qf7#
- 1...Qe5
- 2.Rxe5#
- 1...Qf6
- 2.Sf4#
- 1...f4!
- threat
- 1.Se3?
- Keys
- 1.Ra5!
- threat
- 2.exf5#
- 1...Qxd4+
- 2.Sxd4#
- 1...Bxc2
- 2.Qc4#
- 1...fxe4
- 2.Qh3#
- 1...bxa5
- 2.Qxa6#
- 1...Qe5
- 2.Rxe5#
- 1...Qf6
- 2.Sf4#
- 1...Bd5
- 2.exd5#
- 1...f4
- 2.Qh3#
- 1...b5
- 2.Rxa6#
- threat
- 1.Ra5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 5
- REMOVED MATES = 1
- Sets
- Q(j);P_PINR(F),XP(D)::S(B),XQ(j)
- Q(j);N_GUARD::R1(F),XQ(j)
- Q(j);SBLOCK::S(G)
- Q(j);N_GUARD::R1(F)
- P(c);OGATEB::QAB(A)
- Tries
- Try
- S(B);
- Threat
- P(E),XP(c)
- Vars
- P(c);OGATEB,XP(E)::QAB(A)
- Q(j);N_GUARD::R1(F),XQ(j)
- Q(j);SBLOCK::S(G)
- P(c);OGATEB::QAB(A)
- Refutation
- B(b);
- Try
- B(C);XP(g)
- Threat
- DUALS(2)
- Vars
- B(b);XR(F)::S(G)
- P(c);XP(E)::S(G)
- Q(j);N_GUARD::R1(F),XQ(j)
- B(i);P_PINB(I)::R1(F)
- Refutation
- B(i);CHECK,P_PINB(I),XB(C)
- Try
- R(F);
- Threat
- DUALS(2)
- Vars
- Q(j);CHECK,XP(D)::S(B),XQ(j)
- P(c);OGATEB,XP(E)::QAB(A)
- Q(j);N_GUARD::R1(F),XQ(j)
- B(b);OGATE::P(E),XB(b)
- Refutation
- P(d);XR(F)
- Try
- R(F);XP(c)
- Threat
- DUALS(3)
- Vars
- Q(j);CHECK,XP(D)::S(B),XQ(j)
- Q(j);::S(G)
- B(i);P_PINB(I)::S(G)
- Refutation
- B(i);P_PINB(I)
- Try
- Q(A);
- Threat
- DUALS(5)
- Refutation
- B(b);XQ(A)
- Try
- Q(A);
- Threat
- DUALS(4)
- Vars
- B(b);::P(E),XP(c)
- Refutation
- P(d);XQ(A)
- Try
- Q(A);XP(a)
- Threat
- QAB1(A),XP(c)
- Vars
- Q(j);N_GUARD::R1(F),XQ(j)
- Q(j);SBLOCK::S(G)
- Refutation
- P(c);
- Try
- Actual
- R(F);
- Threat
- P(E),XP(c)
- Vars
- Q(j);CHECK,XP(D)::S(B),XQ(j)
- B(b);N_GUARD,XS(B)::QAB(A)
- P(c);OGATEB,XP(E)::QAB(A)
- P(e);OGATEB,XR(F)::QAR(A),XP(d)
- Q(j);N_GUARD::R1(F),XQ(j)
- Q(j);SBLOCK::S(G)
- B(b);OGATE::P(E),XB(b)
- P(c);OGATEB::QAB(A)
- P(e);OGATEB::R(F),XP(d)
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).