MESON Chess Problem Database
Problem Display
PID: 52229 (2B4r/K1P5/8/1pQ1B3/pP1PNqRr/1PpkPpp1/R7/5N2 w - - 0 1)
Onkoud, Abdelaziz
Probleemblad, 2004
#2
13 + 9
SOLUTION
- SOUND
- Sets
- 1...Qxe3
- 2.Qxc3#
- 2.Qxb5#
- 1...Qxe5
- 2.Qxc3#
- 1...Qg5
- 2.Qxc3#
- 2.Qxb5#
- 1...Qh6
- 2.Qxc3#
- 2.Qxb5#
- 1...Qxe4
- 2.Qxb5#
- 1...Qf5
- 2.Qxc3#
- 2.Qxb5#
- 1...Qf6
- 2.Qxc3#
- 2.Qxb5#
- 1...Qf7
- 2.Qxc3#
- 1...Qf8
- 2.Qxc3#
- 2.Qxb5#
- 1...c2
- 2.Qxc2#
- 1...g2
- 2.Sf2#
- 1...Qxe3
- Tries
- 1.Sfxg3?
- threat
- 2.Qxc3#
- 1...Kxe3
- 2.Qxc3#
- 1...c2
- 2.Qc3#
- 1...Qxe4!
- threat
- 1.Sf6?
- threat
- 2.Qxb5#
- 1...Qxd4
- 2.Qxd4#
- 1...c2
- 2.Qxc2#
- 1...Qxe5!
- threat
- 1.Bf5?
- threat
- 2.Sf2#
- 2.Qxc3#
- 2.Qxb5#
- 1...Qxe5
- 2.Sf2#
- 2.Qxc3#
- 1...Qxe4
- 2.Bxe4#
- 2.Qxb5#
- 1...Qxf5
- 2.Qxc3#
- 2.Qxb5#
- 1...c2
- 2.Qxc2#
- 2.Qxb5#
- 1...Rb8
- 2.Sf2#
- 2.Qxc3#
- 1...f2
- 2.Sxf2#
- 2.Qxc3#
- 2.Qxb5#
- 1...Ra8+!
- threat
- 1.Bb7?
- threat
- 2.Qxc3#
- 2.Qxb5#
- 1...Qxe5
- 2.Qxc3#
- 1...Qxe4
- 2.Bxe4#
- 2.Qxb5#
- 1...c2
- 2.Qxc2#
- 2.Qxb5#
- 1...Qf7
- 2.Qxc3#
- 1...Ra8+!
- threat
- 1.Rd2+?
- 1...Kxe4
- 2.Qc6#
- 1...cxd2!
- 1...Kxe4
- 1.Rxf4?
- threat
- 2.Qxc3#
- 2.Qxb5#
- 1...c2
- 2.Qxc2#
- 2.Qxb5#
- 1...Rxf4!
- threat
- 1.Qc4+?
- 1...bxc4
- 2.Sc5#
- 1...Kxe4!
- 1...bxc4
- 1.Qd5?
- threat
- 2.Sc5#
- 1...Qxe4
- 2.Qxe4#
- 2.Qxb5#
- 1...Qf8
- 2.Qxb5#
- 1...c2!
- threat
- 1.Qc6?
- threat
- 2.Sc5#
- 1...Qxe5
- 2.Qxc3#
- 1...Qxe4
- 2.Qxe4#
- 2.Qxb5#
- 1...c2
- 2.Qxc2#
- 1...Qf8
- 2.Qxb5#
- 2.Qxc3#
- 1...axb3!
- threat
- 1.Sfxg3?
- Keys
- 1.d5!
- threat
- 2.Qd4#
- 1...Kxe4
- 2.Qd4#
- 1...Qxe3
- 2.Qxe3#
- 1...Qxe5
- 2.Qxb5#
- 1...Qxe4
- 2.Qxc3#
- 1...c2
- 2.Qxc2#
- threat
- 1.d5!
This is a version
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 2
- REMOVED MATES = 2
- Sets
- Q(f);XB(J)::QAR1(I),XP(a)
- Q(f);XS(G)::QAB(I),XP(h)
- Q(f);P_PINP(L)::QAR1(I),XP(a)
- P(a);OGATE::QAB1(I),XP(a)
- P(d);N_GUARD::S(G)
- Tries
- Try
- S(A);XP(d)
- Threat
- QAR1(I),XP(a)
- Vars
- K(b);P-FLIGHT,XP(D)::QAR2(I),XP(a)
- P(a);::QAR1(I)
- Refutation
- Q(f);XS(G)
- Try
- S(G);
- Threat
- QAB(I),XP(h)
- Vars
- Q(f);OGATE,P_PINQ(I),XP(F)::QAR1(I),XQ(f)
- P(a);OGATE::QAB1(I),XP(a)
- Refutation
- Q(f);XB(J)
- Try
- B(M);
- Threat
- DUALS(3)
- Refutation
- R(i);CHECK
- Try
- B(M);
- Threat
- DUALS(2)
- Vars
- Q(f);XB(J)::QAR1(I),XP(a)
- Q(f);::QAR1(I),XP(a)
- Refutation
- R(i);CHECK
- Try
- R(B);CHECK
- Vars
- K(b);P_SPINQ(f),S_FLIGHT,XS(G)::QAB(I)
- Refutation
- P(a);XR(B)
- Try
- R(H);XQ(f)
- Threat
- DUALS(2)
- Refutation
- R(g);XR(H)
- Try
- Q(I);CHECK
- Vars
- P(h);XQ(I)::S(G)
- Refutation
- K(b);P_SPINQ(f),S_FLIGHT,XS(G)
- Try
- Q(I);
- Threat
- S(G)
- Vars
- Q(f);::QAB(I),XP(h)
- Refutation
- P(a);
- Try
- Q(I);
- Threat
- S(G)
- Vars
- Q(f);XB(J)::QAR1(I),XP(a)
- P(a);OGATE::QAB1(I),XP(a)
- Refutation
- P(e);XP(C)
- Try
- Actual
- P(F);
- Threat
- QAR1(I)
- Vars
- K(b);P_SPINQ(f),S_FLIGHT,XS(G)::QAR1(I)
- Q(f);OGATE,P_PINQ(I),XP(D)::QAR1(I),XQ(f)
- Q(f);XB(J)::QAB(I),XP(h)
- Q(f);XS(G)::QAR1(I),XP(a)
- P(a);OGATE::QAB1(I),XP(a)
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).