MESON Chess Problem Database
Problem Display
PID: 237421 (r1bQ1b2/2Pp3p/r2kPPp1/p2P4/4BRPq/1RPN4/1K2N1PB/8 w - - 0 1)
Labai, Zoltan
Praca, 2001
(First published on Sat May 12 2001)
#2
15 + 10
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Qe1
- 2.Rf2#
- 1...Qf2
- 2.Rxf2#
- 1...Qxf6
- 2.Rxf6#
- 1...Qxg4
- 2.Rxg4#
- 1...Rb6
- 2.Rxb6#
- 1...R6a7
- 2.Rb6#
- 1...Rb8
- 2.cxb8Q#
- 2.cxb8B#
- 1...Bb7
- 2.Qxd7#
- 1...Qe1
- Tries
- 1.Rb7?
- threat
- 2.Qxf8#
- 1...Rb6+
- 2.Rxb6#
- 1...Qxf6
- 2.Rxf6#
- 1...Bxb7
- 2.Qxd7#
- 1...Bh6
- 2.Qe7#
- 1...Be7
- 2.Qxe7#
- 1...Bg7
- 2.Qe7#
- 1...Qh6!
- threat
- 1.Rf1+?
- 1...Qg3
- 2.Bxg3#
- 1...Qxh2!
- 1...Qg3
- 1.Rf2+?
- 1...Qg3
- 2.Bxg3#
- 1...Qxh2!
- 1...Qg3
- 1.Rf3+?
- 1...Qg3
- 2.Bxg3#
- 1...Qxh2!
- 1...Qg3
- 1.Rf5+?
- 1...Qg3
- 2.Bxg3#
- 1...Qxh2!
- 1...Qg3
- 1.c4?
- threat
- 2.c5#
- 1...Qxf6+
- 2.Rxf6#
- 1...Qf2
- 2.Rxf2#
- 1...Rc6!
- threat
- 1.e7?
- threat
- 2.exf8Q#
- 2.exf8B#
- 2.e8S#
- 1...Qxf6
- 2.Rxf6#
- 2.e8S#
- 1...Qxh2
- 2.exf8Q#
- 2.exf8B#
- 2.e8S#
- 1...Qxg4
- 2.Rxg4#
- 2.exf8Q#
- 2.exf8B#
- 2.e8S#
- 1...Qg3
- 2.exf8Q#
- 2.exf8B#
- 2.e8S#
- 1...Qe1
- 2.Rf2#
- 2.exf8Q#
- 2.exf8B#
- 2.e8S#
- 1...Qf2
- 2.Rxf2#
- 2.exf8Q#
- 2.exf8B#
- 2.e8S#
- 1...Qg5
- 2.exf8Q#
- 2.exf8B#
- 2.e8S#
- 1...Qh3
- 2.exf8Q#
- 2.exf8B#
- 2.e8S#
- 1...Qh5
- 2.exf8Q#
- 2.exf8B#
- 2.e8S#
- 1...Qh6
- 2.e8S#
- 1...Rb6
- 2.Rxb6#
- 2.exf8Q#
- 2.exf8B#
- 2.e8S#
- 1...Rc6
- 2.exf8Q#
- 2.exf8B#
- 2.e8S#
- 1...R6a7
- 2.Rb6#
- 2.exf8Q#
- 2.exf8B#
- 2.e8S#
- 1...R8a7
- 2.exf8Q#
- 2.exf8B#
- 2.e8S#
- 1...Rb8
- 2.cxb8Q#
- 2.cxb8B#
- 2.exf8Q#
- 2.exf8B#
- 2.e8S#
- 1...Bb7
- 2.exf8Q#
- 2.exf8B#
- 2.e8S#
- 1...Bh6
- 2.e8S#
- 1...Bg7
- 2.e8S#
- 1...a4
- 2.exf8Q#
- 2.exf8B#
- 2.e8S#
- 1...g5
- 2.exf8Q#
- 2.exf8B#
- 2.e8S#
- 1...h5
- 2.exf8Q#
- 2.exf8B#
- 2.e8S#
- 1...h6
- 2.exf8Q#
- 2.exf8B#
- 2.e8S#
- 1...Bxe7!
- threat
- 1.Rb7?
- Keys
- 1.Sd4!
- threat
- 2.Sb5#
- 1...Qf2+
- 2.Rxf2#
- 1...Rb6
- 2.Rxb6#
- 1...Rb8
- 2.cxb8Q#
- 2.cxb8B#
- threat
- 1.Sd4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 5
- Sets
- Q(a);N_GUARD::B(D)+R(I)
- Q(a);N_GUARD,P_PINS(B)::B(D)+R(I),XQ(a)
- Q(a);OGATE,P_PINP(F),XP(M)::B(D)+R(I),XQ(a)
- Q(a);OGATE,XP(J)::B(D)+R(I),XQ(a)
- R(c);N_GUARD,P_PINR(E)::R(E),XR(c)
- R(c);N_GUARD::R(E)
- R(h);OGATE,P_PINR(E)::PXR(h)=Q
- B(i);N_GUARD::QAR1(O),XP(f)
- Tries
- Try
- R(E);
- Threat
- QAB(O),XB(j)
- Vars
- R(c);CHECK,N_GUARD::R(E),XR(c)
- Q(a);OGATE,P_PINP(F),XP(M)::B(D)+R(I),XQ(a)
- B(i);N_GUARD,XR(E)::QAR1(O),XP(f)
- B(j);N_GUARD::QAB1(O)
- B(j);N_GUARD::QAB1(O),XB(j)
- Refutation
- Q(a);
- Try
- R(I);CHECK
- Vars
- Q(a);N_GUARD,P_SPINQ(a)::B(D),XQ(a)
- Refutation
- Q(a);XB(D)
- Try
- R(I);CHECK
- Vars
- Q(a);N_GUARD,P_SPINQ(a)::B(D),XQ(a)
- Refutation
- Q(a);XB(D)
- Try
- R(I);CHECK
- Vars
- Q(a);N_GUARD,P_SPINQ(a)::B(D),XQ(a)
- Refutation
- Q(a);XB(D)
- Try
- R(I);CHECK
- Vars
- Q(a);N_GUARD,P_SPINQ(a)::B(D),XQ(a)
- Refutation
- Q(a);XB(D)
- Try
- P(F);
- Threat
- P(F)
- Vars
- Q(a);CHECK,OGATE,XP(M)::B(D)+R(I),XQ(a)
- Q(a);N_GUARD,P_PINS(B)::B(D)+R(I),XQ(a)
- Refutation
- R(c);
- Try
- P(L);
- Threat
- DUALS(3)
- Vars
- Q(a);::P=S
- B(j);::P=S
- Refutation
- B(j);XP(L)
- Try
- Actual
- S(B);
- Threat
- S(B)
- Vars
- Q(a);CHECK,N_GUARD::B(D)+R(I),XQ(a)
- R(c);N_GUARD,P_PINR(E)::R(E),XR(c)
- R(h);OGATE,P_PINR(E)::PXR(h)=Q
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).