MESON Chess Problem Database
Problem Display
PID: 245331 (2NB1q2/pKRP4/4p3/1BNkp2R/2p1p1b1/4P2Q/n1P2n2/8 w - - 0 1)
Onkoud, Abdelaziz
idee & form, 2007
#2
11 + 10
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Bd1
- 2.Qxe6#
- 1...Be2
- 2.Qxe6#
- 1...Bf3
- 2.Qxe6#
- 1...Bxh5
- 2.Qxe6#
- 1...Bd1
- Tries
- 1.Sb3?
- threat
- 2.Bxc4#
- 2.Bc6#
- 1...cxb3
- 2.Bc4#
- 2.c4#
- 1...Qc5
- 2.Rxc5#
- 1...Qd6
- 2.Bxc4#
- 1...Be2
- 2.Bc6#
- 1...Sb4
- 2.Bxc4#
- 1...c3
- 2.Bc4#
- 1...Qb4!
- threat
- 1.Sd3?
- threat
- 2.Bxc4#
- 2.Bc6#
- 2.Rxe5#
- 1...Bxh5
- 2.Bxc4#
- 2.Bc6#
- 1...Sxd3
- 2.Bxc4#
- 1...cxd3
- 2.Bc4#
- 2.c4#
- 1...Qb4
- 2.Sf4#
- 2.Rxe5#
- 1...Qc5
- 2.Sf4#
- 2.Rxe5#
- 2.Rxc5#
- 1...Qd6
- 2.Sf4#
- 2.Bxc4#
- 1...Qg7
- 2.Sf4#
- 2.Bxc4#
- 2.Bc6#
- 2.Rc5#
- 1...Qf4
- 2.Sxf4#
- 2.Bxc4#
- 2.Bc6#
- 2.Rc5#
- 1...Qf5
- 2.Bxc4#
- 2.Bc6#
- 2.Rc5#
- 1...Qf6
- 2.Bxc4#
- 2.Bc6#
- 2.Rc5#
- 1...Qh8
- 2.Sf4#
- 2.Bxc4#
- 2.Bc6#
- 2.Rc5#
- 1...Bf5
- 2.Bxc4#
- 2.Bc6#
- 1...Sb4
- 2.Bxc4#
- 2.Rxe5#
- 1...c3
- 2.Bc4#
- 2.Rxe5#
- 1...exd3!
- threat
- 1.Sa4?
- threat
- 2.Bxc4#
- 2.Bc6#
- 1...Qc5
- 2.Rxc5#
- 1...Qd6
- 2.Bxc4#
- 1...Be2
- 2.Bc6#
- 1...Sb4
- 2.Sc3#
- 2.Bxc4#
- 1...c3
- 2.Bc4#
- 1...Qb4!
- threat
- 1.Sxe4?
- threat
- 2.Bc6#
- 1...Kxe4
- 2.Bc6#
- 1...Sxe4
- 2.Bxc4#
- 1...Qb4
- 2.Sf6#
- 1...Qc5
- 2.Sf6#
- 1...Qd6
- 2.Sf6#
- 1...Sb4
- 2.Sc3#
- 1...c3!
- threat
- 1.Sa6?
- threat
- 2.Bxc4#
- 2.Bc6#
- 1...Qc5
- 2.Rxc5#
- 1...Qd6
- 2.Bxc4#
- 1...Be2
- 2.Bc6#
- 1...Sb4
- 2.Bxc4#
- 1...c3
- 2.Bc4#
- 1...Qb4!
- threat
- 1.Sb6+?
- 1...Kd6
- 2.Rc6#
- 1...axb6!
- 1...Kd6
- 1.Se7+?
- 1...Kd6
- 2.Rc6#
- 1...Qxe7!
- 1...Kd6
- 1.Sb3?
- Keys
- 1.Sxe6!
- threat
- 2.Bxc4#
- 1...Kxe6
- 2.Bxc4#
- 1...Qb4
- 2.Sf4#
- 1...Qc5
- 2.Sf4#
- 1...Be2
- 2.Bc6#
- 1...c3
- 2.Bc4#
- threat
- 1.Sxe6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 4
- REMOVED MATES = 3
- Sets
- B(e);OGATE::QAB1(C),XP(h)
- B(e);N_SPINP(g),OGATE,XR(F)::QAB1(C),XP(h)
- Tries
- Try
- S(E);
- Threat
- DUALS(2)
- Vars
- Q(j);N_GUARD::R1(H),XQ(j)
- Q(j);::B(D),XP(c)
- B(e);::B(D)
- S(a);::B(D),XP(c)
- P(c);::B(D)
- Refutation
- Q(j);P_PINB(D)
- Try
- S(E);
- Threat
- DUALS(3)
- Vars
- S(b);XS(E)::B(D),XP(c)
- Refutation
- P(d);XS(E)
- Try
- S(E);
- Threat
- DUALS(2)
- Vars
- Q(j);N_GUARD::R1(H),XQ(j)
- Q(j);::B(D),XP(c)
- B(e);::B(D)
- P(c);::B(D)
- Refutation
- Q(j);P_PINB(D)
- Try
- S(E);XP(d)
- Threat
- B(D)
- Vars
- K(f);N_SPINP(g),S_FLIGHT,XS(E)::B(D)
- S(b);SBLOCK,XS(E)::B(D),XP(c)
- Q(j);N_GUARD,P_PINB(D)::S(E)
- Q(j);N_GUARD::S(E)
- S(a);N_GUARD::S(E)
- Refutation
- P(c);
- Try
- S(E);
- Threat
- DUALS(2)
- Vars
- Q(j);N_GUARD::R1(H),XQ(j)
- Q(j);::B(D),XP(c)
- B(e);::B(D)
- S(a);::B(D),XP(c)
- P(c);::B(D)
- Refutation
- Q(j);P_PINB(D)
- Try
- S(J);CHECK
- Vars
- K(f);N_SPINP(g),P-FLIGHT::R1(H)
- Refutation
- P(i);XS(J)
- Try
- S(J);CHECK
- Vars
- K(f);N_SPINP(g),P-FLIGHT::R1(H)
- Refutation
- Q(j);XS(J)
- Try
- Actual
- S(E);XP(h)
- Threat
- B(D),XP(c)
- Vars
- K(f);N_SPINP(g),P_SPINB(e),S_FLIGHT,XS(E)::B(D),XP(c)
- Q(j);N_GUARD,P_PINB(D)::S(E)
- Q(j);N_GUARD::S(E)
- B(e);::B(D)
- P(c);::B(D)
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).