MESON Chess Problem Database
Problem Display
PID: 239860 (bb3Q2/4n3/7R/r3p3/3Np3/3Pk1p1/4N1P1/1B2K3 w - - 0 1)
Petite, Efren
Themes-64, 1979
#2
8 + 8
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Sd5
- 2.Sf5#
- 1...Sf5
- 2.Sxf5#
- 1...Sc6
- 2.Sf5#
- 1...Sg6
- 2.Sf5#
- 1...Sc8
- 2.Sf5#
- 1...Sg8
- 2.Sf5#
- 1...Sd5
- Tries
- 1.Rh3?
- threat
- 2.Rxg3#
- 2.Qh6#
- 2.Qf2#
- 1...exd4
- 2.Qf2#
- 1...Ra6
- 2.Rxg3#
- 2.Qf2#
- 1...Sd5
- 2.Sf5#
- 2.Rxg3#
- 2.Qf2#
- 1...Sf5
- 2.Sxf5#
- 1...Sg6
- 2.Sf5#
- 2.Rxg3#
- 2.Qf2#
- 1...Sg8
- 2.Sf5#
- 2.Rxg3#
- 2.Qf2#
- 1...exd3!
- threat
- 1.Rc6?
- threat
- 2.Qh6#
- 1...exd3
- 2.Qf3#
- 1...Sd5
- 2.Sf5#
- 1...Sf5
- 2.Sxf5#
- 1...Sg6
- 2.Sf5#
- 1...Sg8
- 2.Sf5#
- 1...exd4!
- threat
- 1.Rd6?
- threat
- 2.Sc2#
- 2.Qh6#
- 1...Bxd6
- 2.Qh6#
- 1...exd4
- 2.Qf4#
- 1...Ra2
- 2.Qh6#
- 1...Rc5
- 2.Qh6#
- 1...Rd5
- 2.Qh6#
- 1...Bd5
- 2.Qh6#
- 1...Sd5
- 2.Sf5#
- 1...Sf5
- 2.Sc2#
- 2.Sxf5#
- 1...Sg6
- 2.Sc2#
- 2.Sf5#
- 1...Sg8
- 2.Sc2#
- 2.Sf5#
- 1...exd3!
- threat
- 1.Qg7?
- threat
- 2.Qxg3#
- 2.Qg5#
- 1...exd4
- 2.Qxd4#
- 1...Sd5
- 2.Sf5#
- 2.Qxg3#
- 1...Sf5
- 2.Sxf5#
- 2.Qg5#
- 1...Sg6
- 2.Sf5#
- 1...exd3!
- threat
- 1.Qf6?
- threat
- 2.Qg5#
- 1...exd4
- 2.Qxd4#
- 1...Sd5
- 2.Sf5#
- 1...Sg6
- 2.Sf5#
- 1...exd3!
- threat
- 1.dxe4?
- threat
- 2.Qf3#
- 1...Sf5
- 2.Sxf5#
- 1...Bxe4!
- threat
- 1.Rh3?
- Keys
- 1.Re6!
- threat
- 2.Qh6#
- 1...exd3
- 2.Qf4#
- 1...exd4
- 2.Qf3#
- 1...Sd5
- 2.Sf5#
- 1...Sf5
- 2.Sxf5#
- 1...Sg6
- 2.Sf5#
- 1...Sg8
- 2.Sf5#
- threat
- 1.Re6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 2
- Sets
- S(f);N_GUARD::S(F)
- S(f);N_GUARD::S(F),XS(f)
- Tries
- Try
- R(G);P_PINP(b)
- Threat
- DUALS(3)
- Vars
- P(e);XS(F)::QAB1(H)
- S(f);N_GUARD::S(F),XS(f)
- Refutation
- P(c);XP(E)
- Try
- R(G);
- Threat
- QAB(H)
- Vars
- P(c);N_GUARD,XP(E)::QAR1(H)
- S(f);N_GUARD::S(F)
- S(f);N_GUARD::S(F),XS(f)
- Refutation
- P(e);XS(F)
- Try
- R(G);
- Threat
- DUALS(2)
- Vars
- B(h);XR(G)::QAB(H)
- P(e);N_GUARD,XS(F)::QAB1(H)
- R(d);::QAB(H)
- B(g);::QAB(H)
- S(f);N_GUARD::S(F)
- Refutation
- P(c);XP(E)
- Try
- Q(H);
- Threat
- DUALS(2)
- Vars
- P(e);OGATE,XS(F)::QAB1(H),XP(e)
- S(f);N_GUARD::S(F)
- Refutation
- P(c);XP(E)
- Try
- Q(H);
- Threat
- QAB(H)
- Vars
- P(e);OGATE,XS(F)::QAB1(H),XP(e)
- S(f);N_GUARD::S(F)
- Refutation
- P(c);XP(E)
- Try
- P(E);XP(c)
- Threat
- QAR1(H)
- Vars
- S(f);N_GUARD::S(F),XS(f)
- Refutation
- B(g);XP(E)
- Try
- Actual
- R(G);
- Threat
- QAB(H)
- Vars
- P(c);P_SPINP(e),XP(E)::QAB1(H)
- P(e);P_SPINP(c),XS(F)::QAR1(H)
- S(f);N_GUARD::S(F)
- S(f);N_GUARD::S(F),XS(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).