MESON Chess Problem Database
Problem Display
PID: 239021 (3r4/B3R1q1/1R3Np1/3B1p2/3rp3/2Npk1Pp/6n1/b2KnQ2 w - - 0 1)
Petite, Efren
Problemas, 2014
#2
9 + 12
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Rb4
- 2.Rxb4#
- 1...Sf4
- 2.Qxf4#
- 1...Sh4
- 2.Qf4#
- 1...d2
- 2.Qe2#
- 1...f4
- 2.Sg4#
- 1...Rb4
- Tries
- 1.Sfxe4?
- threat
- 2.Qf2#
- 1...Rxe4
- 2.Rf6#
- 1...d2
- 2.Qe2#
- 1...fxe4!
- threat
- 1.Bxe4?
- threat
- 2.Qg1#
- 1...Rxe4
- 2.Rd6#
- 1...fxe4
- 2.Sg4#
- 1...Sf3
- 2.Qxf3#
- 1...h2!
- threat
- 1.Rxe4+?
- 1...fxe4
- 2.Sg4#
- 1...Rxe4!
- 1...fxe4
- 1.Sfxe4?
- Keys
- 1.Scxe4!
- threat
- 2.Qf2#
- 1...Rxe4
- 2.Rb2#
- 1...fxe4
- 2.Sg4#
- 1...d2
- 2.Qe2#
- threat
- 1.Scxe4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 4
- Sets
- R(g);OGATEB::B(H)+R(F),XR(g)
- S(c);N_GUARD::QAB1(B),XS(c)
- S(c);N_GUARD::QAB1(B)
- P(d);N_GUARD::QAR1(B)
- P(i);N_GUARD::S(G)
- Tries
- Try
- S(G);XP(h)
- Threat
- QAB1(B)
- Vars
- R(g);OGATEB,P_SPINR(g),XS(G)::B(H)+R(F)
- P(d);N_GUARD::QAR1(B)
- Refutation
- P(i);P_SPINP(i),XS(G)
- Try
- B(E);XP(h)
- Threat
- QAB(B)
- Vars
- R(g);OGATEB,P_SPINR(g),XB(E)::B(H)+R(F)
- P(i);N_GUARD,P_SPINP(i),XB(E)::S(G)
- S(b);N_GUARD::QAR1(B),XS(b)
- Refutation
- P(f);
- Try
- R(I);CHECK,XP(h)
- Vars
- P(i);XR(I)::S(G)
- Refutation
- R(g);XR(I)
- Try
- Actual
- S(C);XP(h)
- Threat
- QAB1(B)
- Vars
- R(g);OGATEB,P_SPINR(g),XS(C)::B(H)+R(F)
- P(i);N_GUARD,P_SPINP(i),XS(C)::S(G)
- P(d);N_GUARD::QAR1(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).