MESON Chess Problem Database
Problem Display
PID: 83785 (1b6/7B/K4Qnr/8/3P4/2BPkN1r/1R4p1/2nR2Nb w - - 0 1)
Ellerman, Arnoldo
Problemas, 1969
#2
10 + 8
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Rxf3
- 2.Qxf3#
- 1...Sa2
- 2.Re2#
- 1...Se2
- 2.Rxe2#
- 1...Sb3
- 2.Re2#
- 1...Sxd3
- 2.Re2#
- 1...Rxf3
- Tries
- 1.Sh2?
- threat
- 2.Sg4#
- 2.Qf2#
- 1...Rxh2
- 2.Qf2#
- 2.Qf3#
- 1...Bxh2
- 2.Qf2#
- 1...Sxd3
- 2.Re2#
- 1...Rf3
- 2.Sg4#
- 2.Qxf3#
- 1...Rg3
- 2.Qf2#
- 1...R3h4
- 2.Qf2#
- 2.Qf3#
- 1...R6h4
- 2.Qf2#
- 1...Bg3
- 2.Sg4#
- 2.Qf3#
- 1...Bf4
- 2.Sg4#
- 1...Se2
- 2.Sg4#
- 2.Rxe2#
- 1...Sf4
- 2.Sg4#
- 1...Sh4
- 2.Sg4#
- 2.Bd2#
- 1...Se7
- 2.Sg4#
- 2.Bd2#
- 1...Sf8
- 2.Sg4#
- 2.Bd2#
- 1...Sh8
- 2.Sg4#
- 2.Bd2#
- 1...Se5!
- threat
- 1.Se5?
- threat
- 2.Sc4#
- 2.Sg4#
- 2.Qf2#
- 1...Bxe5
- 2.Qf2#
- 1...Sxd3
- 2.Re2#
- 1...Rf3
- 2.Sc4#
- 2.Sg4#
- 2.Qxf3#
- 1...Rg3
- 2.Sc4#
- 2.Qf2#
- 1...R3h4
- 2.Sc4#
- 2.Qf2#
- 2.Qf3#
- 1...R6h4
- 2.Sc4#
- 2.Qf2#
- 1...Se2
- 2.Sc4#
- 2.Sg4#
- 2.Rxe2#
- 1...Sf4
- 2.Sc4#
- 2.Sg4#
- 1...Sh4
- 2.Sc4#
- 2.Sg4#
- 2.Qxh6#
- 1...Se7
- 2.Sc4#
- 2.Sg4#
- 1...Sf8
- 2.Sc4#
- 2.Sg4#
- 1...Sh8
- 2.Sc4#
- 2.Sg4#
- 1...Sxe5!
- threat
- 1.Sh2?
- Keys
- 1.Sh4!
- threat
- 2.Qf2#
- 1...Sxd3
- 2.Re2#
- 1...Sxh4
- 2.Bd2#
- 1...Rf3
- 2.Qxf3#
- 1...Bg3
- 2.Qf3#
- 1...Bf4
- 2.Sf5#
- 1...Se2
- 2.Rxe2#
- 1...Sf4
- 2.Sf5#
- 1...Se5
- 2.Qxh6#
- 1...Se7
- 2.Bd2#
- 1...Sf8
- 2.Bd2#
- 1...Sh8
- 2.Bd2#
- threat
- 1.Sh4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 8
- REMOVED MATES = 2
- Sets
- R(e);OGATE,XS(F)::QAR1(I),XR(e)
- S(a);N_GUARD::R1(C)
- S(a);N_GUARD::R1(C),XS(a)
- S(a);N_GUARD,XP(E)::R1(C)
- Tries
- Try
- S(F);
- Threat
- DUALS(2)
- Vars
- B(h);XS(F)::QAB1(I)
- S(a);N_GUARD,XP(E)::R1(C)
- R(e);::QAB1(I)
- R(g);::QAB1(I)
- B(h);::S(F)
- S(f);P_PINQ(I)::S(F)
- Refutation
- S(f);P_PINQ(I)
- Try
- S(F);
- Threat
- DUALS(3)
- Vars
- B(h);XS(F)::QAB1(I)
- S(a);N_GUARD,XP(E)::R1(C)
- Refutation
- S(f);P_PINQ(I),XS(F)
- Try
- Actual
- S(F);
- Threat
- QAB1(I)
- Vars
- S(a);N_GUARD,XP(E)::R1(C)
- S(f);P_PINQ(I),XS(F)::B(D)
- R(e);N_GUARD::QAR1(I),XR(e)
- B(h);S_CUTR(e)::QAR1(I)
- B(h);SBLOCK::S(F)
- S(a);N_GUARD::R1(C),XS(a)
- S(f);P_PINQ(I),SBLOCK::S(F)
- S(f);OGATE,P_PINQ(I)::QAB(I),XR(g)
- S(f);P_PINQ(I)::B(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).