MESON Chess Problem Database
Problem Display
PID: 233735 (b1N1N3/1k1B1p2/4nRp1/K4pRp/6nQ/1P3pB1/8/8 w - - 0 1)
Onkoud, Abdelaziz
Freie Presse, 1998
#2
9 + 9
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Sf2
- 2.Qb4#
- 1...Sh2
- 2.Qb4#
- 1...Se3
- 2.Qb4#
- 1...Se5
- 2.Qb4#
- 1...Sxf6
- 2.Qb4#
- 1...Sh6
- 2.Qb4#
- 1...Sd4
- 2.Rb6#
- 1...Sf4
- 2.Rb6#
- 1...Sc5
- 2.Rb6#
- 1...Sxg5
- 2.Rb6#
- 1...Sc7
- 2.Rb6#
- 1...Sg7
- 2.Rb6#
- 1...Sd8
- 2.Rb6#
- 1...Sf8
- 2.Rb6#
- 1...f2
- 2.Qh1#
- 1...f4
- 2.Rb5#
- 1...Sf2
- Tries
- 1.Bf2?
- 1...Sxf2
- 2.Qb4#
- 1...Sxf6
- 2.Qb4#
- 1...Sxg5
- 2.Rb6#
- 1...Sh2
- 2.Qb4#
- 1...Se3
- 2.Qb4#
- 1...Se5
- 2.Qb4#
- 1...Sh6
- 2.Qb4#
- 1...Sd4
- 2.Rb6#
- 1...Sf4
- 2.Rb6#
- 1...Sc5
- 2.Rb6#
- 1...Sc7
- 2.Rb6#
- 1...Sg7
- 2.Rb6#
- 1...Sd8
- 2.Rb6#
- 1...Sf8
- 2.Rb6#
- 1...f4
- 2.Rb5#
- 1...Kb8!
- 1...Sxf2
- 1.Bh2?
- 1...Sxh2
- 2.Qb4#
- 1...Sxf6
- 2.Qb4#
- 1...Sxg5
- 2.Rb6#
- 1...Se5
- 2.Qb4#
- 1...Sf4
- 2.Rb6#
- 1...Sc7
- 2.Rb6#
- 1...f4
- 2.Rb5#
- 1...Sf2
- 2.Qb4#
- 1...Se3
- 2.Qb4#
- 1...Sh6
- 2.Qb4#
- 1...Sd4
- 2.Rb6#
- 1...Sc5
- 2.Rb6#
- 1...Sg7
- 2.Rb6#
- 1...Sd8
- 2.Rb6#
- 1...Sf8
- 2.Rb6#
- 1...f2!
- 1...Sxh2
- 1.Be5?
- 1...Sxe5
- 2.Qb4#
- 1...Sxf6
- 2.Qb4#
- 1...Sxg5
- 2.Rb6#
- 1...Sc7
- 2.Rb6#
- 1...f2
- 2.Qh1#
- 1...Sf2
- 2.Qb4#
- 1...Sh2
- 2.Qb4#
- 1...Se3
- 2.Qb4#
- 1...Sh6
- 2.Qb4#
- 1...Sd4
- 2.Rb6#
- 1...Sf4
- 2.Rb6#
- 1...Sc5
- 2.Rb6#
- 1...Sg7
- 2.Rb6#
- 1...Sd8
- 2.Rb6#
- 1...Sf8
- 2.Rb6#
- 1...f4!
- 1...Sxe5
- 1.Rgxf5?
- threat
- 2.Rb5#
- 1...Se5
- 2.Qb4#
- 1...Sc7
- 2.Rb6#
- 1...Sd4
- 2.Rb6#
- 1...Sc5
- 2.Rb6#
- 1...gxf5!
- threat
- 1.Qxg4?
- threat
- 2.Qxf3#
- 2.Qb4#
- 1...Sxg5
- 2.Rb6#
- 2.Qb4#
- 1...fxg4
- 2.Rb5#
- 1...Sf4
- 2.Rb6#
- 1...Sc7
- 2.Rb6#
- 1...f4
- 2.Rb5#
- 1...f2
- 2.Qf3#
- 2.Qb4#
- 1...Sd4
- 2.Rb6#
- 1...Sc5
- 2.Rb6#
- 2.Qb4#
- 1...Sd8
- 2.Rb6#
- 2.Qb4#
- 1...hxg4!
- threat
- 1.Bf2?
- Keys
- 1.Bc7!
- 1...Sxf6
- 2.Qb4#
- 1...Sxg5
- 2.Rb6#
- 1...Sxc7
- 2.Rb6#
- 1...f2
- 2.Qh1#
- 1...Sf2
- 2.Qb4#
- 1...Sh2
- 2.Qb4#
- 1...Se3
- 2.Qb4#
- 1...Se5
- 2.Qb4#
- 1...Sh6
- 2.Qb4#
- 1...Sd4
- 2.Rb6#
- 1...Sf4
- 2.Rb6#
- 1...Sc5
- 2.Rb6#
- 1...Sg7
- 2.Rb6#
- 1...Sd8
- 2.Rb6#
- 1...Sf8
- 2.Rb6#
- 1...f4
- 2.Rb5#
- 1...Sxf6
- 1.Bc7!
FEATURES
- Static
- TYPE = WAITER
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- S(b);OGATE::QAR(C)
- S(b);OGATE,XR(F)::QAR(C)
- S(e);OGATE::R1(F)
- S(e);OGATE,XR(E)::R1(F)
- P(a);OGATEB::QAB(C)
- P(c);OGATE::R(E)
- Tries
- Try
- B(B);
- Vars
- S(b);OGATE,XB(B)::QAR(C)
- S(b);OGATE,XR(F)::QAR(C)
- S(e);OGATE,XR(E)::R1(F)
- S(b);OGATE::QAR(C)
- S(e);OGATE::R1(F)
- P(c);OGATE::R(E)
- Refutation
- K(g);P-FLIGHT
- Try
- B(B);
- Vars
- S(b);OGATE,XB(B)::QAR(C)
- S(b);OGATE,XR(F)::QAR(C)
- S(e);OGATE,XR(E)::R1(F)
- S(b);OGATE::QAR(C)
- S(e);OGATE::R1(F)
- P(c);OGATE::R(E)
- Refutation
- P(a);
- Try
- B(B);
- Vars
- S(b);OGATE,XB(B)::QAR(C)
- S(b);OGATE,XR(F)::QAR(C)
- S(e);OGATE,XR(E)::R1(F)
- S(e);OGATE::R1(F)
- P(a);OGATEB::QAB(C)
- S(b);OGATE::QAR(C)
- Refutation
- P(c);
- Try
- R(E);XP(c)
- Threat
- R(E)
- Vars
- S(b);OGATE::QAR(C)
- S(e);OGATE::R1(F)
- Refutation
- P(f);XR(E)
- Try
- Q(C);XS(b)
- Threat
- DUALS(2)
- Vars
- P(c);OGATE,XQ(C)::R(E)
- S(e);OGATE::R1(F)
- P(c);OGATE::R(E)
- Refutation
- P(d);XQ(C)
- Try
- Actual
- B(B);
- Vars
- S(b);OGATE,XR(F)::QAR(C)
- S(e);OGATE,XR(E)::R1(F)
- S(e);OGATE,XB(B)::R1(F)
- P(a);OGATEB::QAB(C)
- S(b);OGATE::QAR(C)
- S(e);OGATE::R1(F)
- P(c);OGATE::R(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).