MESON Chess Problem Database
Problem Display
PID: 245304 (8/8/4N3/2P1pp2/1nQ2p2/1pp1p3/nPkPP1N1/K1B3RR w - - 0 1)
Onkoud, Abdelaziz
Problemas, 1998
#2
11 + 9
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Sxc1
- 2.Qxc3#
- 1...Sd3
- 2.Qxd3#
- 1...Sd5
- 2.Qd3#
- 1...Sa6
- 2.Qd3#
- 1...Sc6
- 2.Qd3#
- 1...f3
- 2.Sxe3#
- 1...e4
- 2.Sd4#
- 1...Sxc1
- Tries
- 1.Sgxf4?
- 1...Sxc1
- 2.Qxc3#
- 1...exf4
- 2.Sd4#
- 1...Sd3
- 2.Qxd3#
- 1...Sd5
- 2.Qd3#
- 1...Sa6
- 2.Qd3#
- 1...Sc6
- 2.Qd3#
- 1...e4
- 2.Sd4#
- 1...exd2!
- 1...Sxc1
- 1.Sexf4?
- threat
- 2.Sxe3#
- 1...Sxc1
- 2.Qxc3#
- 1...exd2
- 2.Se3#
- 1...Sd5
- 2.Qd3#
- 1...exf4!
- threat
- 1.Re1?
- 1...Sxc1
- 2.Qxc3#
- 1...e4
- 2.Sd4#
- 1...Sd3
- 2.Qxd3#
- 1...Sd5
- 2.Qd3#
- 1...Sa6
- 2.Qd3#
- 1...Sc6
- 2.Qd3#
- 1...f3
- 2.Sxe3#
- 1...exd2!
- 1...Sxc1
- 1.Rf1?
- 1...Sxc1
- 2.Qxc3#
- 1...e4
- 2.Sd4#
- 1...Sd3
- 2.Qxd3#
- 1...Sd5
- 2.Qd3#
- 1...Sa6
- 2.Qd3#
- 1...Sc6
- 2.Qd3#
- 1...f3
- 2.Sxe3#
- 1...exd2!
- 1...Sxc1
- 1.Rh2?
- 1...Sxc1
- 2.Qxc3#
- 1...e4
- 2.Sd4#
- 1...Sd3
- 2.Qxd3#
- 1...Sd5
- 2.Qd3#
- 1...Sa6
- 2.Qd3#
- 1...Sc6
- 2.Qd3#
- 1...f3
- 2.Sxe3#
- 1...exd2!
- 1...Sxc1
- 1.Rh3?
- 1...Sxc1
- 2.Qxc3#
- 1...e4
- 2.Sd4#
- 1...Sd3
- 2.Qxd3#
- 1...Sd5
- 2.Qd3#
- 1...Sa6
- 2.Qd3#
- 1...Sc6
- 2.Qd3#
- 1...f3
- 2.Sxe3#
- 1...exd2!
- 1...Sxc1
- 1.Rh4?
- 1...Sxc1
- 2.Qxc3#
- 1...e4
- 2.Sd4#
- 1...Sd3
- 2.Qxd3#
- 1...Sd5
- 2.Qd3#
- 1...Sa6
- 2.Qd3#
- 1...Sc6
- 2.Qd3#
- 1...f3
- 2.Sxe3#
- 1...exd2!
- 1...Sxc1
- 1.Rh5?
- 1...Sxc1
- 2.Qxc3#
- 1...e4
- 2.Sd4#
- 1...Sd3
- 2.Qxd3#
- 1...Sd5
- 2.Qd3#
- 1...Sa6
- 2.Qd3#
- 1...Sc6
- 2.Qd3#
- 1...f3
- 2.Sxe3#
- 1...exd2!
- 1...Sxc1
- 1.Rh6?
- 1...Sxc1
- 2.Qxc3#
- 1...e4
- 2.Sd4#
- 1...Sd3
- 2.Qxd3#
- 1...Sd5
- 2.Qd3#
- 1...Sa6
- 2.Qd3#
- 1...Sc6
- 2.Qd3#
- 1...f3
- 2.Sxe3#
- 1...exd2!
- 1...Sxc1
- 1.Rh7?
- 1...Sxc1
- 2.Qxc3#
- 1...e4
- 2.Sd4#
- 1...Sd3
- 2.Qxd3#
- 1...Sd5
- 2.Qd3#
- 1...Sa6
- 2.Qd3#
- 1...Sc6
- 2.Qd3#
- 1...f3
- 2.Sxe3#
- 1...exd2!
- 1...Sxc1
- 1.Rh8?
- 1...Sxc1
- 2.Qxc3#
- 1...e4
- 2.Sd4#
- 1...Sd3
- 2.Qxd3#
- 1...Sd5
- 2.Qd3#
- 1...Sa6
- 2.Qd3#
- 1...Sc6
- 2.Qd3#
- 1...f3
- 2.Sxe3#
- 1...exd2!
- 1...Sxc1
- 1.Qe4+?
- 1...Sd3
- 2.Qxd3#
- 1...fxe4!
- 1...Sd3
- 1.dxc3?
- 1...Sxc3
- 2.Qxc3#
- 1...e4
- 2.Sd4#
- 1...Sd3
- 2.Qxd3#
- 1...Sd5
- 2.Qd3#
- 1...Sa6
- 2.Qd3#
- 1...Sc6
- 2.Qd3#
- 1...f3
- 2.Sxe3#
- 1...Sxc1!
- 1...Sxc3
- 1.dxe3?
- 1...Sxc1
- 2.Qxc3#
- 1...fxe3
- 2.Sxe3#
- 1...e4
- 2.Sd4#
- 1...Sd3
- 2.Qxd3#
- 1...Sd5
- 2.Qd3#
- 1...Sa6
- 2.Qd3#
- 1...Sc6
- 2.Qd3#
- 1...f3!
- 1...Sxc1
- 1.d4?
- 1...Sxc1
- 2.Qxc3#
- 1...exd4
- 2.Sxd4#
- 1...Sd3
- 2.Qxd3#
- 1...Sd5
- 2.Qd3#
- 1...Sa6
- 2.Qd3#
- 1...Sc6
- 2.Qd3#
- 1...f3
- 2.Sxe3#
- 1...e4!
- 1...Sxc1
- 1.c6?
- 1...Sxc1
- 2.Qxc3#
- 1...Sxc6
- 2.Qd3#
- 1...e4
- 2.Sd4#
- 1...Sd3
- 2.Qxd3#
- 1...Sd5
- 2.Qd3#
- 1...Sa6
- 2.Qd3#
- 1...f3
- 2.Sxe3#
- 1...exd2!
- 1...Sxc1
- 1.Sgxf4?
- Keys
- 1.Rd1!
- 1...Sxc1
- 2.Qxc3#
- 1...exd2
- 2.Rxd2#
- 1...e4
- 2.Sd4#
- 1...Sd3
- 2.Qxd3#
- 1...Sd5
- 2.Qd3#
- 1...Sa6
- 2.Qd3#
- 1...Sc6
- 2.Qd3#
- 1...f3
- 2.Sxe3#
- 1...Sxc1
- 1.Rd1!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- S(a);N_GUARD,XB(B)::QAR1(I),XP(d)
- S(f);N_GUARD::QAB1(I),XS(f)
- S(f);N_GUARD::QAB1(I)
- P(g);N_GUARD::S(H),XP(e)
- P(h);N_GUARD::S(K)
- Tries
- Try
- S(H);XP(g)
- Vars
- S(a);N_GUARD,XB(B)::QAR1(I),XP(d)
- P(h);N_GUARD,XS(H)::S(K)
- S(f);N_GUARD::QAB1(I),XS(f)
- S(f);N_GUARD::QAB1(I)
- P(h);N_GUARD::S(K)
- Refutation
- P(e);XP(F)
- Try
- S(K);XP(g)
- Threat
- S(H),XP(e)
- Vars
- S(a);N_GUARD,XB(B)::QAR1(I),XP(d)
- P(e);XP(F)::S(H)
- S(f);N_GUARD::QAB1(I)
- Refutation
- P(h);XS(K)
- Try
- R(C);
- Vars
- S(a);N_GUARD,XB(B)::QAR1(I),XP(d)
- P(h);N_GUARD::S(K)
- S(f);N_GUARD::QAB1(I),XS(f)
- S(f);N_GUARD::QAB1(I)
- P(g);N_GUARD::S(H),XP(e)
- Refutation
- P(e);XP(F)
- Try
- R(C);
- Vars
- S(a);N_GUARD,XB(B)::QAR1(I),XP(d)
- P(h);N_GUARD::S(K)
- S(f);N_GUARD::QAB1(I),XS(f)
- S(f);N_GUARD::QAB1(I)
- P(g);N_GUARD::S(H),XP(e)
- Refutation
- P(e);XP(F)
- Try
- R(D);
- Vars
- S(a);N_GUARD,XB(B)::QAR1(I),XP(d)
- P(h);N_GUARD::S(K)
- S(f);N_GUARD::QAB1(I),XS(f)
- S(f);N_GUARD::QAB1(I)
- P(g);N_GUARD::S(H),XP(e)
- Refutation
- P(e);XP(F)
- Try
- R(D);
- Vars
- S(a);N_GUARD,XB(B)::QAR1(I),XP(d)
- P(h);N_GUARD::S(K)
- S(f);N_GUARD::QAB1(I),XS(f)
- S(f);N_GUARD::QAB1(I)
- P(g);N_GUARD::S(H),XP(e)
- Refutation
- P(e);XP(F)
- Try
- R(D);
- Vars
- S(a);N_GUARD,XB(B)::QAR1(I),XP(d)
- P(h);N_GUARD::S(K)
- S(f);N_GUARD::QAB1(I),XS(f)
- S(f);N_GUARD::QAB1(I)
- P(g);N_GUARD::S(H),XP(e)
- Refutation
- P(e);XP(F)
- Try
- R(D);
- Vars
- S(a);N_GUARD,XB(B)::QAR1(I),XP(d)
- P(h);N_GUARD::S(K)
- S(f);N_GUARD::QAB1(I),XS(f)
- S(f);N_GUARD::QAB1(I)
- P(g);N_GUARD::S(H),XP(e)
- Refutation
- P(e);XP(F)
- Try
- R(D);
- Vars
- S(a);N_GUARD,XB(B)::QAR1(I),XP(d)
- P(h);N_GUARD::S(K)
- S(f);N_GUARD::QAB1(I),XS(f)
- S(f);N_GUARD::QAB1(I)
- P(g);N_GUARD::S(H),XP(e)
- Refutation
- P(e);XP(F)
- Try
- R(D);
- Vars
- S(a);N_GUARD,XB(B)::QAR1(I),XP(d)
- P(h);N_GUARD::S(K)
- S(f);N_GUARD::QAB1(I),XS(f)
- S(f);N_GUARD::QAB1(I)
- P(g);N_GUARD::S(H),XP(e)
- Refutation
- P(e);XP(F)
- Try
- R(D);
- Vars
- S(a);N_GUARD,XB(B)::QAR1(I),XP(d)
- P(h);N_GUARD::S(K)
- S(f);N_GUARD::QAB1(I),XS(f)
- S(f);N_GUARD::QAB1(I)
- P(g);N_GUARD::S(H),XP(e)
- Refutation
- P(e);XP(F)
- Try
- Q(I);CHECK,N_PINP(d)
- Vars
- S(f);N_GUARD,P_SPINS(f)::QAB1(I),XS(f)
- Refutation
- P(i);XQ(I)
- Try
- P(F);XP(d)
- Vars
- S(a);OGATE,P_SPINS(a),XP(F)::QAR1(I),XS(a)
- P(h);N_GUARD::S(K)
- S(f);N_GUARD::QAB1(I),XS(f)
- S(f);N_GUARD::QAB1(I)
- P(g);N_GUARD::S(H),XP(e)
- Refutation
- S(a);XB(B)
- Try
- P(F);XP(e)
- Vars
- S(a);N_GUARD,XB(B)::QAR1(I),XP(d)
- P(g);XP(F)::S(H),XP(g)
- P(h);N_GUARD::S(K)
- S(f);N_GUARD::QAB1(I),XS(f)
- S(f);N_GUARD::QAB1(I)
- Refutation
- P(g);
- Try
- P(F);
- Vars
- S(a);N_GUARD,XB(B)::QAR1(I),XP(d)
- P(h);XP(F)::S(K),XP(h)
- S(f);N_GUARD::QAB1(I),XS(f)
- S(f);N_GUARD::QAB1(I)
- P(g);N_GUARD::S(H),XP(e)
- Refutation
- P(h);
- Try
- P(J);
- Vars
- S(a);N_GUARD,XB(B)::QAR1(I),XP(d)
- S(f);N_GUARD,XP(J)::QAB1(I)
- P(h);N_GUARD::S(K)
- S(f);N_GUARD::QAB1(I),XS(f)
- S(f);N_GUARD::QAB1(I)
- P(g);N_GUARD::S(H),XP(e)
- Refutation
- P(e);XP(F)
- Try
- Actual
- R(C);
- Vars
- S(a);N_GUARD,XB(B)::QAR1(I),XP(d)
- P(e);OGATE,XP(F)::R1(C),XP(e)
- P(h);N_GUARD::S(K)
- S(f);N_GUARD::QAB1(I),XS(f)
- S(f);N_GUARD::QAB1(I)
- P(g);N_GUARD::S(H),XP(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).