MESON Chess Problem Database
Problem Display
PID: 225661 (8/B6B/4K1N1/4n3/4k1n1/2R5/4P3/8 w - - 0 1)
Onkoud, Abdelaziz
Praca, 1999
#2
6 + 3
| 6490 | yacpdb | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Sf2
- 2.Re3#
- 1...Sh2
- 2.Re3#
- 1...Se3
- 2.Rxe3#
- 1...Sf6
- 2.Re3#
- 1...Sh6
- 2.Re3#
- 1...Sd3
- 2.Rc4#
- 1...Sf3
- 2.exf3#
- 1...Sc4
- 2.Rxc4#
- 1...Sxg6
- 2.Rc4#
- 1...Sd7
- 2.Rc4#
- 1...Sf7
- 2.Rc4#
- 1...Sf2
- Tries
- 1.Sf4+?
- 1...Sg6
- 2.Rc4#
- 1...Kxf4!
- 1...Sg6
- 1.Sh4+?
- 1...Sg6
- 2.Rc4#
- 1...Kf4!
- 1...Sg6
- 1.Se7+?
- 1...Sg6
- 2.Rc4#
- 1...Kf4!
- 1...Sg6
- 1.Sf8+?
- 1...Sg6
- 2.Rc4#
- 1...Kf4!
- 1...Sg6
- 1.Sh8+?
- 1...Sg6
- 2.Rc4#
- 1...Kf4!
- 1...Sg6
- 1.Bc5?
- 1...Sxg6
- 2.Rc4#
- 1...Sf2
- 2.Re3#
- 1...Sh2
- 2.Re3#
- 1...Se3
- 2.Rxe3#
- 1...Sf6
- 2.Re3#
- 1...Sh6
- 2.Re3#
- 1...Sd3
- 2.Rc4#
- 1...Sf3
- 2.exf3#
- 1...Sc4
- 2.Rxc4#
- 1...Sd7
- 2.Rc4#
- 1...Sf7
- 2.Rc4#
- 1...Sc6!
- 1...Sxg6
- 1.Bb6?
- 1...Sxg6
- 2.Rc4#
- 1...Sf2
- 2.Re3#
- 1...Sh2
- 2.Re3#
- 1...Se3
- 2.Rxe3#
- 1...Sf6
- 2.Re3#
- 1...Sh6
- 2.Re3#
- 1...Sd3
- 2.Rc4#
- 1...Sf3
- 2.exf3#
- 1...Sc4
- 2.Rxc4#
- 1...Sd7
- 2.Rc4#
- 1...Sf7
- 2.Rc4#
- 1...Sc6!
- 1...Sxg6
- 1.Bg8?
- 1...Sxg6
- 2.Rc4#
- 1...Sf2
- 2.Re3#
- 1...Sh2
- 2.Re3#
- 1...Se3
- 2.Rxe3#
- 1...Sf6
- 2.Re3#
- 1...Sh6
- 2.Re3#
- 1...Sd3
- 2.Rc4#
- 1...Sf3
- 2.exf3#
- 1...Sc4
- 2.Rxc4#
- 1...Sd7
- 2.Rc4#
- 1...Sf7
- 2.Rc4#
- 1...Sc6!
- 1...Sxg6
- 1.Rf3?
- threat
- 2.Sxe5#
- 2.Rf4#
- 1...Sxg6
- 2.Bxg6#
- 1...Sc6
- 2.Sf4#
- 2.Sh4#
- 2.Se5#
- 2.Se7#
- 2.Sf8#
- 2.Sh8#
- 2.Rf4#
- 1...Se3
- 2.Rxe3#
- 2.Rf4#
- 1...Sf6
- 2.Re3#
- 2.Rf4#
- 1...Sh6
- 2.Re3#
- 2.Rf4#
- 1...Sd3
- 2.Sf4#
- 2.Sh4#
- 2.Se5#
- 2.Se7#
- 2.Sf8#
- 2.Sh8#
- 1...Sc4
- 2.Sf4#
- 2.Sh4#
- 2.Se5#
- 2.Se7#
- 2.Sf8#
- 2.Sh8#
- 2.Rf4#
- 1...Sd7
- 2.Sf4#
- 2.Sh4#
- 2.Se5#
- 2.Se7#
- 2.Sf8#
- 2.Sh8#
- 2.Rf4#
- 1...Sf7
- 2.Sf4#
- 2.Sh4#
- 2.Se5#
- 2.Se7#
- 2.Sf8#
- 2.Sh8#
- 2.Rf4#
- 1...Sxf3!
- threat
- 1.Sf4+?
- Keys
- 1.Rg3!
- 1...Sxg6
- 2.Rxg4#
- 1...Sc6
- 2.Rxg4#
- 1...Sf2
- 2.Re3#
- 1...Sh2
- 2.Re3#
- 1...Se3
- 2.Rxe3#
- 1...Sf6
- 2.Re3#
- 1...Sh6
- 2.Re3#
- 1...Sd3
- 2.exd3#
- 1...Sf3
- 2.Rxg4#
- 1...Sc4
- 2.Rxg4#
- 1...Sd7
- 2.Rxg4#
- 1...Sf7
- 2.Rxg4#
- 1...Sxg6
- 1.Rg3!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 6
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- S(b);N_GUARD::R1(B)
- S(b);N_GUARD::R1(B),XS(b)
- S(c);N_GUARD::R(B)
- S(c);OGATE::P(A),XS(c)
- S(c);N_GUARD::R(B),XS(c)
- S(c);N_GUARD,P_SPINS(c),XS(D)::R(B)
- Tries
- Try
- S(D);CHECK
- Vars
- S(c);P_SPINS(c)::R(B)
- Refutation
- K(a);P-FLIGHT,XS(D)
- Try
- S(D);CHECK
- Vars
- S(c);P_SPINS(c)::R(B)
- Refutation
- K(a);P-FLIGHT
- Try
- S(D);CHECK
- Vars
- S(c);P_SPINS(c)::R(B)
- Refutation
- K(a);P-FLIGHT
- Try
- S(D);CHECK
- Vars
- S(c);P_SPINS(c)::R(B)
- Refutation
- K(a);P-FLIGHT
- Try
- S(D);CHECK
- Vars
- S(c);P_SPINS(c)::R(B)
- Refutation
- K(a);P-FLIGHT
- Try
- B(E);
- Vars
- S(c);N_GUARD,P_SPINS(c),XS(D)::R(B)
- S(b);N_GUARD::R1(B)
- S(b);N_GUARD::R1(B),XS(b)
- S(c);N_GUARD::R(B)
- S(c);OGATE::P(A),XS(c)
- S(c);N_GUARD::R(B),XS(c)
- Refutation
- S(c);
- Try
- B(E);
- Vars
- S(c);N_GUARD,P_SPINS(c),XS(D)::R(B)
- S(b);N_GUARD::R1(B)
- S(b);N_GUARD::R1(B),XS(b)
- S(c);N_GUARD::R(B)
- S(c);OGATE::P(A),XS(c)
- S(c);N_GUARD::R(B),XS(c)
- Refutation
- S(c);
- Try
- B(F);
- Vars
- S(c);N_GUARD,XS(D)::R(B)
- S(b);N_GUARD::R1(B)
- S(b);N_GUARD::R1(B),XS(b)
- S(c);N_GUARD::R(B)
- S(c);OGATE::P(A),XS(c)
- S(c);N_GUARD::R(B),XS(c)
- Refutation
- S(c);
- Try
- R(B);
- Threat
- DUALS(2)
- Vars
- S(c);OGATE,P_SPINS(c),XS(D)::B(F),XS(c)
- Refutation
- S(c);XR(B)
- Try
- Actual
- R(B);
- Vars
- S(c);N_GUARD,P_SPINS(c),XS(D)::R(B),XS(b)
- S(c);N_GUARD::R(B),XS(b)
- S(b);N_GUARD::R1(B)
- S(b);N_GUARD::R1(B),XS(b)
- S(c);OGATE::P(A),XS(c)
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).