MESON Chess Problem Database
Problem Display
PID: 159854 (6R1/1Q6/p2N3n/2prp3/2Nk1n2/1Pp2B2/2K5/8 w - - 0 1)
Onkoud, Abdelaziz
Schach, 2000
#2
7 + 8
SOLUTION
- SOUND
- Sets
- 1...Rxd6
- 2.Qe4#
- 1...Se2
- 2.Qxd5#
- 1...Sg2
- 2.Qxd5#
- 1...Sd3
- 2.Qxd5#
- 1...Sh3
- 2.Qxd5#
- 1...Sh5
- 2.Qxd5#
- 1...Se6
- 2.Qxd5#
- 1...Sg6
- 2.Qxd5#
- 1...Sg4
- 2.Sf5#
- 1...Sf5
- 2.Sxf5#
- 1...Sf7
- 2.Sf5#
- 1...Sxg8
- 2.Sf5#
- 1...a5
- 2.Sb5#
- 1...Rxd6
- Tries
- 1.Rg1?
- 1...Rxd6
- 2.Qe4#
- 1...Sg4
- 2.Sf5#
- 1...Se2
- 2.Rd1#
- 2.Qxd5#
- 1...Sg2
- 2.Rd1#
- 2.Qxd5#
- 1...Sd3
- 2.Qxd5#
- 1...Sh3
- 2.Rd1#
- 2.Qxd5#
- 1...Sh5
- 2.Rd1#
- 2.Qxd5#
- 1...Se6
- 2.Rd1#
- 2.Qxd5#
- 1...Sg6
- 2.Rd1#
- 2.Qxd5#
- 1...Sf5
- 2.Sxf5#
- 1...Sf7
- 2.Sf5#
- 1...Sg8
- 2.Sf5#
- 1...a5
- 2.Sb5#
- 1...e4!
- 1...Rxd6
- 1.Rg2?
- 1...Rxd6
- 2.Qe4#
- 1...Sxg2
- 2.Qxd5#
- 1...Se2
- 2.Qxd5#
- 1...Sd3
- 2.Qxd5#
- 1...Sh3
- 2.Qxd5#
- 1...Sh5
- 2.Qxd5#
- 1...Se6
- 2.Qxd5#
- 1...Sg6
- 2.Qxd5#
- 1...Sg4
- 2.Sf5#
- 1...Sf5
- 2.Sxf5#
- 1...Sf7
- 2.Sf5#
- 1...Sg8
- 2.Sf5#
- 1...a5
- 2.Sb5#
- 1...e4!
- 1...Rxd6
- 1.Rg3?
- 1...Rxd6
- 2.Qe4#
- 1...Se2
- 2.Qxd5#
- 1...Sg2
- 2.Qxd5#
- 1...Sd3
- 2.Qxd5#
- 1...Sh3
- 2.Qxd5#
- 1...Sh5
- 2.Qxd5#
- 1...Se6
- 2.Qxd5#
- 1...Sg6
- 2.Qxd5#
- 1...Sg4
- 2.Sf5#
- 1...Sf5
- 2.Sxf5#
- 1...Sf7
- 2.Sf5#
- 1...Sg8
- 2.Sf5#
- 1...a5
- 2.Sb5#
- 1...e4!
- 1...Rxd6
- 1.Rg4?
- threat
- 2.Qxd5#
- 1...Rxd6
- 2.Qe4#
- 1...Sxg4
- 2.Sf5#
- 1...e4!
- threat
- 1.Rg5?
- 1...Rxd6
- 2.Qe4#
- 1...Se2
- 2.Qxd5#
- 1...Sg2
- 2.Qxd5#
- 1...Sd3
- 2.Qxd5#
- 1...Sh3
- 2.Qxd5#
- 1...Sh5
- 2.Qxd5#
- 1...Se6
- 2.Qxd5#
- 1...Sg6
- 2.Qxd5#
- 1...Sg4
- 2.Sf5#
- 1...Sf5
- 2.Sxf5#
- 1...Sf7
- 2.Sf5#
- 1...Sg8
- 2.Sf5#
- 1...a5
- 2.Sb5#
- 1...e4!
- 1...Rxd6
- 1.Rg6?
- 1...Rxd6
- 2.Qe4#
- 1...Sxg6
- 2.Qxd5#
- 1...Se2
- 2.Qxd5#
- 1...Sg2
- 2.Qxd5#
- 1...Sd3
- 2.Qxd5#
- 1...Sh3
- 2.Qxd5#
- 1...Sh5
- 2.Qxd5#
- 1...Se6
- 2.Qxd5#
- 1...Sg4
- 2.Sf5#
- 1...Sf5
- 2.Sxf5#
- 1...Sf7
- 2.Sf5#
- 1...Sg8
- 2.Sf5#
- 1...a5
- 2.Sb5#
- 1...e4!
- 1...Rxd6
- 1.Rg7?
- 1...Rxd6
- 2.Qe4#
- 1...Se2
- 2.Qxd5#
- 1...Sg2
- 2.Qxd5#
- 1...Sd3
- 2.Qxd5#
- 1...Sh3
- 2.Qxd5#
- 1...Sh5
- 2.Qxd5#
- 1...Se6
- 2.Qxd5#
- 1...Sg6
- 2.Qxd5#
- 1...Sg4
- 2.Sf5#
- 1...Sf5
- 2.Sxf5#
- 1...Sf7
- 2.Sf5#
- 1...Sg8
- 2.Sf5#
- 1...a5
- 2.Sb5#
- 1...e4!
- 1...Rxd6
- 1.Ra8?
- 1...Rxd6
- 2.Qe4#
- 1...Se2
- 2.Qxd5#
- 1...Sg2
- 2.Qxd5#
- 1...Sd3
- 2.Qxd5#
- 1...Sh3
- 2.Qxd5#
- 1...Sh5
- 2.Qxd5#
- 1...Se6
- 2.Qxd5#
- 1...Sg6
- 2.Qxd5#
- 1...Sg4
- 2.Sf5#
- 1...Sf5
- 2.Sxf5#
- 1...Sf7
- 2.Sf5#
- 1...Sg8
- 2.Sf5#
- 1...a5
- 2.Sb5#
- 1...e4!
- 1...Rxd6
- 1.Rb8?
- 1...Rxd6
- 2.Qe4#
- 1...Se2
- 2.Qxd5#
- 1...Sg2
- 2.Qxd5#
- 1...Sd3
- 2.Qxd5#
- 1...Sh3
- 2.Qxd5#
- 1...Sh5
- 2.Qxd5#
- 1...Se6
- 2.Qxd5#
- 1...Sg6
- 2.Qxd5#
- 1...Sg4
- 2.Sf5#
- 1...Sf5
- 2.Sxf5#
- 1...Sf7
- 2.Sf5#
- 1...Sg8
- 2.Sf5#
- 1...a5
- 2.Sb5#
- 1...e4!
- 1...Rxd6
- 1.Rc8?
- 1...Rxd6
- 2.Qe4#
- 1...Se2
- 2.Qxd5#
- 1...Sg2
- 2.Qxd5#
- 1...Sd3
- 2.Qxd5#
- 1...Sh3
- 2.Qxd5#
- 1...Sh5
- 2.Qxd5#
- 1...Se6
- 2.Qxd5#
- 1...Sg6
- 2.Qxd5#
- 1...Sg4
- 2.Sf5#
- 1...Sf5
- 2.Sxf5#
- 1...Sf7
- 2.Sf5#
- 1...Sg8
- 2.Sf5#
- 1...a5
- 2.Sb5#
- 1...e4!
- 1...Rxd6
- 1.Rd8?
- 1...Rxd6
- 2.Qe4#
- 1...Se2
- 2.Qxd5#
- 1...Sg2
- 2.Qxd5#
- 1...Sd3
- 2.Qxd5#
- 1...Sh3
- 2.Qxd5#
- 1...Sh5
- 2.Qxd5#
- 1...Se6
- 2.Qxd5#
- 1...Sg6
- 2.Qxd5#
- 1...Sg4
- 2.Sf5#
- 1...Sf5
- 2.Sxf5#
- 1...Sf7
- 2.Sf5#
- 1...Sg8
- 2.Sf5#
- 1...a5
- 2.Sb5#
- 1...e4!
- 1...Rxd6
- 1.Rf8?
- 1...Rxd6
- 2.Qe4#
- 1...Se2
- 2.Qxd5#
- 1...Sg2
- 2.Qxd5#
- 1...Sd3
- 2.Qxd5#
- 1...Sh3
- 2.Qxd5#
- 1...Sh5
- 2.Qxd5#
- 1...Se6
- 2.Qxd5#
- 1...Sg6
- 2.Qxd5#
- 1...Sg4
- 2.Sf5#
- 1...Sf5
- 2.Sxf5#
- 1...Sf7
- 2.Sf5#
- 1...Sg8
- 2.Sf5#
- 1...a5
- 2.Sb5#
- 1...e4!
- 1...Rxd6
- 1.Rh8?
- 1...Rxd6
- 2.Qe4#
- 1...Se2
- 2.Qxd5#
- 1...Sg2
- 2.Qxd5#
- 1...Sd3
- 2.Qxd5#
- 1...Sh3
- 2.Qxd5#
- 1...Sh5
- 2.Qxd5#
- 1...Se6
- 2.Qxd5#
- 1...Sg6
- 2.Qxd5#
- 1...Sg4
- 2.Sf5#
- 1...Sf5
- 2.Sxf5#
- 1...Sf7
- 2.Sf5#
- 1...Sg8
- 2.Sf5#
- 1...a5
- 2.Sb5#
- 1...e4!
- 1...Rxd6
- 1.Qc6?
- 1...Rxd6
- 2.Qe4#
- 1...Sxg8
- 2.Sf5#
- 1...Se2
- 2.Qxd5#
- 1...Sg2
- 2.Qxd5#
- 1...Sd3
- 2.Qxd5#
- 1...Sh3
- 2.Qxd5#
- 1...Sh5
- 2.Qxd5#
- 1...Se6
- 2.Qxd5#
- 1...Sg6
- 2.Qxd5#
- 1...Sg4
- 2.Sf5#
- 1...Sf5
- 2.Sxf5#
- 1...Sf7
- 2.Sf5#
- 1...a5
- 2.Sb5#
- 1...e4!
- 1...Rxd6
- 1.Qa8?
- 1...Rxd6
- 2.Qe4#
- 1...Sxg8
- 2.Sf5#
- 1...Se2
- 2.Qxd5#
- 1...Sg2
- 2.Qxd5#
- 1...Sd3
- 2.Qxd5#
- 1...Sh3
- 2.Qxd5#
- 1...Sh5
- 2.Qxd5#
- 1...Se6
- 2.Qxd5#
- 1...Sg6
- 2.Qxd5#
- 1...Sg4
- 2.Sf5#
- 1...Sf5
- 2.Sxf5#
- 1...Sf7
- 2.Sf5#
- 1...a5
- 2.Sb5#
- 1...e4!
- 1...Rxd6
- 1.Qh7?
- threat
- 2.Qe4#
- 1...e4
- 2.Qxe4#
- 1...Sf5
- 2.Sxf5#
- 1...Sg6!
- threat
- 1.Rg1?
- Keys
- 1.Re8!
- 1...Rxd6
- 2.Qe4#
- 1...e4
- 2.Rxe4#
- 1...Se2
- 2.Qxd5#
- 1...Sg2
- 2.Qxd5#
- 1...Sd3
- 2.Qxd5#
- 1...Sh3
- 2.Qxd5#
- 1...Sh5
- 2.Qxd5#
- 1...Se6
- 2.Qxd5#
- 1...Sg6
- 2.Qxd5#
- 1...Sg4
- 2.Sf5#
- 1...Sf5
- 2.Sxf5#
- 1...Sf7
- 2.Sf5#
- 1...Sg8
- 2.Sf5#
- 1...a5
- 2.Sb5#
- 1...Rxd6
- 1.Re8!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- R(e);OGATE,XS(E)::QAR1(F)
- S(c);N_GUARD::QAR1(F),XR(e)
- S(h);N_GUARD::S(E)
- S(h);N_GUARD::S(E),XS(h)
- S(h);N_GUARD,XR(G)::S(E)
- P(g);N_GUARD::S(E)
- Tries
- Try
- R(G);
- Vars
- R(e);OGATE,XS(E)::QAR1(F)
- S(h);N_GUARD::S(E)
- S(c);N_GUARD::QAR1(F),XR(e)
- S(h);N_GUARD::S(E),XS(h)
- P(g);N_GUARD::S(E)
- Refutation
- P(f);
- Try
- R(G);
- Vars
- R(e);OGATE,XS(E)::QAR1(F)
- S(c);N_GUARD,XR(G)::QAR1(F),XR(e)
- S(c);N_GUARD::QAR1(F),XR(e)
- S(h);N_GUARD::S(E)
- S(h);N_GUARD::S(E),XS(h)
- P(g);N_GUARD::S(E)
- Refutation
- P(f);
- Try
- R(G);
- Vars
- R(e);OGATE,XS(E)::QAR1(F)
- S(c);N_GUARD::QAR1(F),XR(e)
- S(h);N_GUARD::S(E)
- S(h);N_GUARD::S(E),XS(h)
- P(g);N_GUARD::S(E)
- Refutation
- P(f);
- Try
- R(G);P_PINS(c)
- Threat
- QAR1(F),XR(e)
- Vars
- R(e);OGATE,XS(E)::QAR1(F)
- S(h);N_GUARD,N_SPINS(c),XR(G)::S(E)
- Refutation
- P(f);N_SPINS(c)
- Try
- R(G);
- Vars
- R(e);OGATE,XS(E)::QAR1(F)
- S(c);N_GUARD::QAR1(F),XR(e)
- S(h);N_GUARD::S(E)
- S(h);N_GUARD::S(E),XS(h)
- P(g);N_GUARD::S(E)
- Refutation
- P(f);
- Try
- R(G);
- Vars
- R(e);OGATE,XS(E)::QAR1(F)
- S(c);N_GUARD,XR(G)::QAR1(F),XR(e)
- S(c);N_GUARD::QAR1(F),XR(e)
- S(h);N_GUARD::S(E)
- S(h);N_GUARD::S(E),XS(h)
- P(g);N_GUARD::S(E)
- Refutation
- P(f);
- Try
- R(G);
- Vars
- R(e);OGATE,XS(E)::QAR1(F)
- S(c);N_GUARD::QAR1(F),XR(e)
- S(h);N_GUARD::S(E)
- S(h);N_GUARD::S(E),XS(h)
- P(g);N_GUARD::S(E)
- Refutation
- P(f);
- Try
- R(G);
- Vars
- R(e);OGATE,XS(E)::QAR1(F)
- S(c);N_GUARD::QAR1(F),XR(e)
- S(h);N_GUARD::S(E)
- S(h);N_GUARD::S(E),XS(h)
- P(g);N_GUARD::S(E)
- Refutation
- P(f);
- Try
- R(G);
- Vars
- R(e);OGATE,XS(E)::QAR1(F)
- S(c);N_GUARD::QAR1(F),XR(e)
- S(h);N_GUARD::S(E)
- S(h);N_GUARD::S(E),XS(h)
- P(g);N_GUARD::S(E)
- Refutation
- P(f);
- Try
- R(G);
- Vars
- R(e);OGATE,XS(E)::QAR1(F)
- S(c);N_GUARD::QAR1(F),XR(e)
- S(h);N_GUARD::S(E)
- S(h);N_GUARD::S(E),XS(h)
- P(g);N_GUARD::S(E)
- Refutation
- P(f);
- Try
- R(G);
- Vars
- R(e);OGATE,P_SPINR(e),XS(E)::QAR1(F)
- S(c);N_GUARD::QAR1(F),XR(e)
- S(h);N_GUARD::S(E)
- S(h);N_GUARD::S(E),XS(h)
- P(g);N_GUARD::S(E)
- Refutation
- P(f);
- Try
- R(G);
- Vars
- R(e);OGATE,XS(E)::QAR1(F)
- S(c);N_GUARD::QAR1(F),XR(e)
- S(h);N_GUARD::S(E)
- S(h);N_GUARD::S(E),XS(h)
- P(g);N_GUARD::S(E)
- Refutation
- P(f);
- Try
- R(G);
- Vars
- R(e);OGATE,XS(E)::QAR1(F)
- S(c);N_GUARD::QAR1(F),XR(e)
- S(h);N_GUARD::S(E)
- S(h);N_GUARD::S(E),XS(h)
- P(g);N_GUARD::S(E)
- Refutation
- P(f);
- Try
- Q(F);
- Vars
- R(e);OGATE,XS(E)::QAR1(F)
- S(h);N_GUARD,XR(G)::S(E)
- S(c);N_GUARD::QAR1(F),XR(e)
- S(h);N_GUARD::S(E)
- S(h);N_GUARD::S(E),XS(h)
- P(g);N_GUARD::S(E)
- Refutation
- P(f);
- Try
- Q(F);
- Vars
- R(e);OGATE,XS(E)::QAR1(F)
- S(h);N_GUARD,XR(G)::S(E)
- S(c);N_GUARD::QAR1(F),XR(e)
- S(h);N_GUARD::S(E)
- S(h);N_GUARD::S(E),XS(h)
- P(g);N_GUARD::S(E)
- Refutation
- P(f);
- Try
- Q(F);
- Threat
- QAR1(F)
- Vars
- P(f);::QAR1(F),XP(f)
- S(h);N_GUARD::S(E),XS(h)
- Refutation
- S(c);
- Try
- Actual
- R(G);
- Vars
- R(e);OGATE,XS(E)::QAR1(F)
- P(f);OGATE::R1(G),XP(f)
- S(c);N_GUARD::QAR1(F),XR(e)
- S(h);N_GUARD::S(E)
- S(h);N_GUARD::S(E),XS(h)
- P(g);N_GUARD::S(E)
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).