MESON Chess Problem Database
Problem Display
PID: 52732 (2Bn2r1/p3p2r/Kpk1N3/1R1NB3/3p4/8/3b3Q/n2b2q1 w - - 0 1)
Onkoud, Abdelaziz
Schach-Aktiv, 2004
#2
7 + 12
SOLUTION
- SOUND
- Sets
- 1...Qxh2
- 2.Sxd4#
- 1...Qe1
- 2.Sxd4#
- 1...Qf1
- 2.Sxd4#
- 1...Qh1
- 2.Sxd4#
- 1...Qg2
- 2.Sxd4#
- 1...Qg3
- 2.Sxd4#
- 1...Qg5
- 2.Sxd4#
- 1...Qg6
- 2.Sxd4#
- 1...Qg7
- 2.Sxd4#
- 1...Rxh2
- 2.Sxe7#
- 1...Rh3
- 2.Sxe7#
- 1...Rh4
- 2.Sxe7#
- 1...Rh5
- 2.Sxe7#
- 1...Rh6
- 2.Sxe7#
- 1...Rhh8
- 2.Sxe7#
- 1...Rg2
- 2.Sxd8#
- 1...Rg3
- 2.Sxd8#
- 1...Rg4
- 2.Sxd8#
- 1...Rg5
- 2.Sxd8#
- 1...Rg6
- 2.Sxd8#
- 1...Rg7
- 2.Sxd8#
- 1...Bc1
- 2.Sb4#
- 1...Be3
- 2.Sb4#
- 1...Bb4
- 2.Sxb4#
- 1...Bf4
- 2.Sb4#
- 1...Bg5
- 2.Sb4#
- 1...Bh6
- 2.Sb4#
- 1...Sf7
- 2.Sxe7#
- 1...Qxh2
- Tries
- 1.Sxb6?
- threat
- 2.Bd7#
- 2.Rc5#
- 1...Sxe6
- 2.Bb7#
- 2.Bd7#
- 1...Qf1
- 2.Sxd4#
- 2.Bd7#
- 1...Be2
- 2.Bd7#
- 1...Bb4
- 2.Bd7#
- 1...Sb3
- 2.Bd7#
- 1...Sb7
- 2.Bxb7#
- 2.Bd7#
- 1...d3
- 2.Bd7#
- 1...axb6!
- threat
- 1.Bb8?
- threat
- 2.Qc7#
- 1...Qxh2
- 2.Sxd4#
- 1...Rxh2
- 2.Sxe7#
- 1...Qg3
- 2.Sxd4#
- 1...Rg3
- 2.Sxd8#
- 1...Bf4
- 2.Sb4#
- 1...Sxe6!
- threat
- 1.Qh1?
- threat
- 2.Sb4#
- 2.Sxe7#
- 1...Qxh1
- 2.Sxd4#
- 1...Rxh1
- 2.Sxe7#
- 1...Qg2
- 2.Sxd4#
- 1...Rg2
- 2.Sxd8#
- 1...Bb4
- 2.Sxb4#
- 2.Sxe7#
- 1...Bf3!
- threat
- 1.Qg2?
- threat
- 2.Sb4#
- 2.Sxe7#
- 1...Qxg2
- 2.Sxd4#
- 1...Rxg2
- 2.Sxd8#
- 1...Bb4
- 2.Sxb4#
- 2.Sxe7#
- 1...Bf3!
- threat
- 1.Qxh7?
- threat
- 2.Sxe7#
- 1...Qg5
- 2.Sxd4#
- 1...Qg7
- 2.Sxd4#
- 1...Rg7
- 2.Sxd8#
- 1...Bb4
- 2.Sxb4#
- 1...Bg5
- 2.Sb4#
- 1...Re8!
- threat
- 1.Sxb6?
- Keys
- 1.Qh6!
- threat
- 2.Sxd4#
- 2.Sxd8#
- 1...Rxh6
- 2.Sxe7#
- 1...Bxh6
- 2.Sb4#
- 1...Sxe6
- 2.Qxe6#
- 1...Qg6
- 2.Sxd4#
- 1...Rg6
- 2.Sxd8#
- 1...Sb7
- 2.Sxd4#
- 2.Sd8#
- 1...Sf7
- 2.Sxe7#
- 2.Sxd4#
- 2.Sd8#
- 1...d3
- 2.Sd4#
- 2.Sxd8#
- threat
- 1.Qh6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 24
- Sets
- Q(c);N_GUARD,XQ(A)::S(F),XP(e)
- Q(c);N_GUARD::S(F),XP(e)
- Q(c);N_GUARD,P_PINR(B)::S(F),XP(e)
- R(j);N_GUARD,XQ(A)::S(C),XP(i)
- R(j);N_GUARD::S(C),XP(i)
- R(l);N_GUARD::S(F),XS(k)
- B(d);N_GUARD::S(C)
- B(d);N_GUARD::S(C),XB(d)
- S(k);S_CUTR(j)::S(C),XP(i)
- Tries
- Try
- S(C);XP(f)
- Threat
- DUALS(2)
- Vars
- B(b);P_PINR(B)::B(G)
- B(d);::B(G)
- S(a);::B(G)
- P(e);::B(G)
- Refutation
- P(h);XS(C)
- Try
- B(D);
- Threat
- QAR1(A)
- Vars
- Q(c);N_GUARD,XQ(A)::S(F),XP(e)
- R(j);N_GUARD,XQ(A)::S(C),XP(i)
- Q(c);N_GUARD::S(F),XP(e)
- R(l);N_GUARD::S(F),XS(k)
- B(d);N_GUARD::S(C)
- Refutation
- S(k);XS(F)
- Try
- Q(A);
- Threat
- DUALS(2)
- Vars
- Q(c);N_GUARD,XQ(A)::S(F),XP(e)
- R(j);XQ(A)::S(C),XP(i)
- Q(c);N_GUARD::S(F),XP(e)
- R(l);N_GUARD::S(F),XS(k)
- Refutation
- B(b);
- Try
- Q(A);
- Threat
- DUALS(2)
- Vars
- Q(c);N_GUARD,XQ(A)::S(F),XP(e)
- R(l);N_GUARD,XQ(A)::S(F),XS(k)
- Refutation
- B(b);
- Try
- Q(A);XR(j)
- Threat
- S(C),XP(i)
- Vars
- Q(c);N_GUARD::S(F),XP(e)
- R(l);N_GUARD::S(F),XS(k)
- B(d);N_GUARD::S(C),XB(d)
- B(d);N_GUARD::S(C)
- Refutation
- R(l);
- Try
- Actual
- Q(A);
- Threat
- DUALS(2)
- Vars
- R(j);N_GUARD,XQ(A)::S(C),XP(i)
- B(d);N_GUARD,XQ(A)::S(C)
- S(k);OGATE,P_SPINS(k),XS(F)::QAR2(A),XS(k)
- Q(c);::S(F),XP(e)
- R(l);::S(F),XS(k)
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).