MESON Chess Problem Database
Problem Display
PID: 246436 (8/3pQ1p1/B2p2K1/3rpp1N/R2bkp2/8/4p3/2n1N1B1 w - - 0 1)
Onkoud, Abdelaziz
Shakhmatnaya Poeziya, 2001
#2
7 + 11
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Ra5
- 2.Rxd4#
- 1...Rb5
- 2.Rxd4#
- 1...Rc5
- 2.Rxd4#
- 1...Sa2
- 2.Bd3#
- 1...Sb3
- 2.Bd3#
- 1...Sd3
- 2.Bxd3#
- 1...Ra5
- Tries
- 1.Kf7?
- 1...Ra5
- 2.Rxd4#
- 1...Rb5
- 2.Rxd4#
- 1...Rc5
- 2.Rxd4#
- 1...Sa2
- 2.Bd3#
- 1...Sb3
- 2.Bd3#
- 1...Sd3
- 2.Bxd3#
- 1...g5
- 2.Sf6#
- 1...g6
- 2.Sf6#
- 1...f3!
- 1...Ra5
- 1.Kh7?
- 1...Ra5
- 2.Rxd4#
- 1...Rb5
- 2.Rxd4#
- 1...Rc5
- 2.Rxd4#
- 1...Sa2
- 2.Bd3#
- 1...Sb3
- 2.Bd3#
- 1...Sd3
- 2.Bxd3#
- 1...g5
- 2.Sf6#
- 1...g6
- 2.Sf6#
- 1...f3!
- 1...Ra5
- 1.Sxg7?
- 1...Ra5
- 2.Rxd4#
- 1...Rb5
- 2.Rxd4#
- 1...Rc5
- 2.Rxd4#
- 1...Sa2
- 2.Bd3#
- 1...Sb3
- 2.Bd3#
- 1...Sd3
- 2.Bxd3#
- 1...f3!
- 1...Ra5
- 1.Bf2?
- 1...Ra5
- 2.Rxd4#
- 1...Rb5
- 2.Rxd4#
- 1...Rc5
- 2.Rxd4#
- 1...Sa2
- 2.Bd3#
- 1...Sb3
- 2.Bd3#
- 1...Sd3
- 2.Bxd3#
- 1...f3!
- 1...Ra5
- 1.Bxe2?
- threat
- 2.Bf3#
- 1...f3
- 2.Bxf3#
- 1...Sxe2!
- threat
- 1.Bb5?
- 1...Rxb5
- 2.Rxd4#
- 1...Rc5
- 2.Rxd4#
- 1...Sa2
- 2.Bd3#
- 1...Sb3
- 2.Bd3#
- 1...Sd3
- 2.Bxd3#
- 1...f3!
- 1...Rxb5
- 1.Rb4?
- 1...Ra5
- 2.Rxd4#
- 1...Rb5
- 2.Rxd4#
- 1...Rc5
- 2.Rxd4#
- 1...Sa2
- 2.Bd3#
- 1...Sb3
- 2.Bd3#
- 1...Sd3
- 2.Bxd3#
- 1...f3!
- 1...Ra5
- 1.Qe6?
- threat
- 2.Qxf5#
- 1...Ra5
- 2.Rxd4#
- 1...Rb5
- 2.Rxd4#
- 1...Rc5
- 2.Rxd4#
- 1...dxe6!
- threat
- 1.Qe8?
- 1...Ra5
- 2.Rxd4#
- 1...Rb5
- 2.Rxd4#
- 1...Rc5
- 2.Rxd4#
- 1...Sa2
- 2.Bd3#
- 1...Sb3
- 2.Bd3#
- 1...Sd3
- 2.Bxd3#
- 1...f3!
- 1...Ra5
- 1.Kf7?
- Keys
- 1.Kg5!
- 1...Ra5
- 2.Rxd4#
- 1...Rb5
- 2.Rxd4#
- 1...Rc5
- 2.Rxd4#
- 1...Sa2
- 2.Bd3#
- 1...Sb3
- 2.Bd3#
- 1...Sd3
- 2.Bxd3#
- 1...f3
- 2.Sg3#
- 1...g6
- 2.Sf6#
- 1...Ra5
- 1.Kg5!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 0
- Sets
- R(f);N_GUARD::R1(C),XB(c)
- S(a);N_GUARD::B(E)
- S(a);N_GUARD::B(E),XS(a)
- Tries
- Try
- K(F);S_FLIGHT
- Vars
- R(f);N_GUARD::R1(C),XB(c)
- S(a);N_GUARD::B(E)
- S(a);N_GUARD::B(E),XS(a)
- P(k);N_GUARD::S(D)
- Refutation
- P(e);
- Try
- K(F);S_FLIGHT
- Vars
- R(f);N_GUARD::R1(C),XB(c)
- S(a);N_GUARD::B(E)
- S(a);N_GUARD::B(E),XS(a)
- P(k);N_GUARD::S(D)
- Refutation
- P(e);
- Try
- S(D);XP(k)
- Vars
- R(f);N_GUARD::R1(C),XB(c)
- S(a);N_GUARD::B(E)
- S(a);N_GUARD::B(E),XS(a)
- Refutation
- P(e);
- Try
- B(B);
- Vars
- R(f);N_GUARD::R1(C),XB(c)
- S(a);N_GUARD::B(E)
- S(a);N_GUARD::B(E),XS(a)
- Refutation
- P(e);
- Try
- B(E);XP(b)
- Threat
- B(E)
- Vars
- P(e);::B(E),XP(e)
- Refutation
- S(a);XB(E)
- Try
- B(E);
- Vars
- R(f);N_GUARD,XB(E)::R1(C),XB(c)
- R(f);N_GUARD::R1(C),XB(c)
- S(a);N_GUARD::B(E)
- S(a);N_GUARD::B(E),XS(a)
- Refutation
- P(e);
- Try
- R(C);
- Vars
- R(f);N_GUARD::R1(C),XB(c)
- S(a);N_GUARD::B(E)
- S(a);N_GUARD::B(E),XS(a)
- Refutation
- P(e);
- Try
- Q(G);
- Threat
- QAB1(G),XP(h)
- Vars
- R(f);N_GUARD::R1(C),XB(c)
- Refutation
- P(j);N_SPINP(g),XQ(G)
- Try
- Q(G);
- Vars
- R(f);N_GUARD::R1(C),XB(c)
- S(a);N_GUARD::B(E)
- S(a);N_GUARD::B(E),XS(a)
- Refutation
- P(e);
- Try
- Actual
- K(F);P-FLIGHT
- Vars
- R(f);N_GUARD::R1(C),XB(c)
- S(a);N_GUARD::B(E)
- S(a);N_GUARD::B(E),XS(a)
- P(e);N_GUARD::S(D)
- P(k);N_GUARD::S(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).