MESON Chess Problem Database
Problem Display
PID: 151839 (7b/1p1P4/1Qp1N2B/nR2pn1R/1pB1kN2/8/2b2KP1/8 w - - 0 1)
Onkoud, Abdelaziz
The Problemist, 2013
#2
10 + 9
SOLUTION
- SOUND
- Sets
- 1...Bd1
- 2.Bd3#
- 1...Bb3
- 2.Bd3#
- 1...Bd3
- 2.Bxd3#
- 1...Ba4
- 2.Bd3#
- 1...Se3
- 2.Qxe3#
- 1...Sg3
- 2.Qe3#
- 1...Sd4
- 2.Sc5#
- 1...Sh4
- 2.Qe3#
- 1...Sd6
- 2.Qe3#
- 1...Sxh6
- 2.Qe3#
- 1...Se7
- 2.Qe3#
- 1...Sg7
- 2.Rbxe5#
- 2.Rhxe5#
- 2.Qe3#
- 1...exf4
- 2.Sg5#
- 1...cxb5
- 2.Bd5#
- 1...c5
- 2.Bd5#
- 1...Bd1
- Tries
- 1.Se2?
- threat
- 2.Sc5#
- 2.Sg5#
- 1...Sxh6
- 2.Sg3#
- 2.Sc5#
- 2.Qe3#
- 1...Bf6
- 2.Sc5#
- 1...Sb3
- 2.Sg5#
- 1...Se3
- 2.Sg3#
- 2.Sc5#
- 2.Qxe3#
- 1...Sg3
- 2.Sxg3#
- 2.Sc5#
- 2.Qe3#
- 1...Sd4
- 2.Sg3#
- 2.Sc5#
- 1...Sh4
- 2.Sg3#
- 2.Sc5#
- 2.Qe3#
- 1...Sd6
- 2.Sg3#
- 2.Sc5#
- 2.Qe3#
- 1...Se7
- 2.Sg3#
- 2.Sc5#
- 2.Qe3#
- 1...Sg7
- 2.Sg3#
- 2.Sc5#
- 2.Rbxe5#
- 2.Rhxe5#
- 2.Qe3#
- 1...c5
- 2.Sxc5#
- 2.Sg5#
- 1...Sxc4!
- threat
- 1.Rd5?
- threat
- 2.Sc5#
- 1...Sxh6
- 2.Qe3#
- 1...cxd5
- 2.Bxd5#
- 1...c5
- 2.Sxc5#
- 1...Sb3!
- threat
- 1.Rxe5+?
- 1...Kxe5
- 2.Qd4#
- 1...Bxe5!
- 1...Kxe5
- 1.Qd4+?
- 1...Sxd4
- 2.Sc5#
- 1...exd4!
- 1...Sxd4
- 1.Qxc6+?
- 1...Sxc6
- 2.Bd5#
- 1...bxc6!
- 1...Sxc6
- 1.g3?
- threat
- 2.Sg5#
- 1...Sxg3
- 2.Qe3#
- 1...Sxh6
- 2.Qe3#
- 1...Se3
- 2.Qxe3#
- 1...Sd4
- 2.Sc5#
- 1...Sh4
- 2.Qe3#
- 1...Sd6
- 2.Qe3#
- 1...Se7
- 2.Qe3#
- 1...Sg7
- 2.Rbxe5#
- 2.Rhxe5#
- 2.Qe3#
- 1...c5
- 2.Bd5#
- 1...Bf6!
- threat
- 1.d8Q?
- threat
- 2.Sc5#
- 1...Sxh6
- 2.Qe3#
- 1...exf4
- 2.Sg5#
- 1...Sd6
- 2.Qe3#
- 1...c5
- 2.Sxc5#
- 2.Bd5#
- 2.Qd5#
- 1...Sb3!
- threat
- 1.d8R?
- threat
- 2.Sc5#
- 1...Sxh6
- 2.Qe3#
- 1...exf4
- 2.Sg5#
- 1...Sd6
- 2.Qe3#
- 1...c5
- 2.Sxc5#
- 2.Bd5#
- 1...Sb3!
- threat
- 1.Se2?
- Keys
- 1.Be2!
- threat
- 2.Bf3#
- 1...exf4
- 2.Sg5#
- 1...Bd1
- 2.Bd3#
- 1...Sd4
- 2.Sc5#
- 1...Sh4
- 2.Qe3#
- threat
- 1.Be2!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 10
- Sets
- B(a);N_GUARD::B(C)
- B(a);N_GUARD::B(C),XB(a)
- S(f);N_GUARD::QAR1(G),XS(f)
- S(f);N_GUARD::QAR1(G)
- S(f);SBLOCK::S(H)
- S(f);N_GUARD,XB(I)::QAR1(G)
- P(e);SBLOCK,XS(D)::S(H)
- P(g);N_GUARD,XR(E)::B(C)
- P(g);N_GUARD::B(C)
- Tries
- Try
- S(D);
- Threat
- DUALS(2)
- Vars
- B(i);::S(H)
- S(d);::S(H)
- Refutation
- S(d);XB(C)
- Try
- R(E);
- Threat
- S(H)
- Vars
- S(f);N_GUARD,XB(I)::QAR1(G)
- P(g);OGATE,XR(E)::B(C),XP(g)
- P(g);::S(H),XP(g)
- Refutation
- S(d);
- Try
- R(E);CHECK,XP(e)
- Vars
- K(c);P-FLIGHT,P_SPINS(f),XR(E)::QAB1(G)
- Refutation
- B(i);XR(E)
- Try
- Q(G);CHECK
- Vars
- S(f);SBLOCK,XQ(G)::S(H)
- Refutation
- P(e);XQ(G)
- Try
- Q(G);CHECK,XP(g)
- Vars
- S(d);XQ(G)::B(C)
- Refutation
- P(h);XQ(G)
- Try
- P(B);
- Threat
- S(H)
- Vars
- S(f);N_GUARD,XP(B)::QAR1(G)
- S(f);N_GUARD,XB(I)::QAR1(G)
- S(f);N_GUARD::QAR1(G),XS(f)
- S(f);SBLOCK::S(H)
- S(f);N_GUARD::QAR1(G)
- P(g);N_GUARD::B(C)
- Refutation
- B(i);
- Try
- P(J);
- Threat
- S(H)
- Vars
- S(f);N_GUARD,XB(I)::QAR1(G)
- P(e);SBLOCK,XS(D)::S(H)
- S(f);N_GUARD::QAR1(G)
- Refutation
- S(d);
- Try
- P(J);
- Threat
- S(H)
- Vars
- S(f);N_GUARD,XB(I)::QAR1(G)
- P(e);SBLOCK,XS(D)::S(H)
- S(f);N_GUARD::QAR1(G)
- Refutation
- S(d);
- Try
- Actual
- B(C);
- Threat
- B(C)
- Vars
- P(e);SBLOCK,XS(D)::S(H)
- B(a);N_GUARD::B(C)
- S(f);SBLOCK::S(H)
- S(f);N_GUARD::QAR1(G)
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).