MESON Chess Problem Database
Problem Display
PID: 245295 (qN1rR3/1p2p2B/rB1b4/2p1kPK1/n3p3/2p5/2Q2P2/3R2Nb w - - 0 1)
Onkoud, Abdelaziz
Hlas l'udu, 1996
#2
10 + 12
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Rd7
- 2.Sxd7#
- 1...Rc8
- 2.Sd7#
- 1...Rxe8
- 2.Sd7#
- 1...Bc7
- 2.Rxe7#
- 1...Bxb8
- 2.Rxe7#
- 1...Sb2
- 2.Qxc3#
- 1...Sxb6
- 2.Qxc3#
- 1...e3
- 2.f4#
- 1...e6
- 2.Rxe6#
- 1...Rd7
- Tries
- 1.Bc7?
- threat
- 2.Rxe7#
- 1...Rxe8
- 2.Sd7#
- 1...Rd7
- 2.Sxd7#
- 1...e6
- 2.Rxe6#
- 1...Bxc7!
- threat
- 1.Rxd8?
- threat
- 2.Sd7#
- 1...Bxb8
- 2.R1d5#
- 2.R8d5#
- 1...Sxb6
- 2.Qxc3#
- 1...Qxb8!
- threat
- 1.Qb3?
- threat
- 2.Rd5#
- 2.Qd5#
- 2.Qe6#
- 1...Bxb8
- 2.Rxe7#
- 2.Qe6#
- 1...Sxb6
- 2.Qe6#
- 2.Qxc3#
- 1...e3
- 2.Qe6#
- 1...Bc7
- 2.Rxe7#
- 2.Qe6#
- 1...e6
- 2.Rd5#
- 2.Rxe6#
- 2.Qd5#
- 2.Qxe6#
- 1...c4!
- threat
- 1.Qd3?
- threat
- 2.Qg3#
- 2.Qd5#
- 1...Bxb8
- 2.Rxe7#
- 2.Qg3#
- 1...Sxb6
- 2.Qxc3#
- 2.Qg3#
- 1...Bf3
- 2.Qd5#
- 1...Bc7
- 2.Rxe7#
- 2.Qg3#
- 1...e3
- 2.f4#
- 1...exd3!
- threat
- 1.Qxe4+?
- 1...Bxe4
- 2.f4#
- 1...Kxe4!
- 1...Bxe4
- 1.Qa2?
- threat
- 2.Rd5#
- 2.Qd5#
- 2.Qe6#
- 1...Bxb8
- 2.Rxe7#
- 2.Qe6#
- 1...Sxb6
- 2.Qe6#
- 1...e3
- 2.Qe6#
- 1...Bc7
- 2.Rxe7#
- 2.Qe6#
- 1...e6
- 2.Rd5#
- 2.Rxe6#
- 2.Qd5#
- 2.Qxe6#
- 1...c4!
- threat
- 1.Qe2?
- threat
- 2.f4#
- 1...Bf3
- 2.Sxf3#
- 1...e3!
- threat
- 1.f3?
- threat
- 2.Qxe4#
- 2.Qh2#
- 2.f4#
- 1...Bxf3
- 2.Qh2#
- 1...Bg2
- 2.Qxe4#
- 2.f4#
- 1...e3
- 2.Qe4#
- 2.Qh2#
- 2.f4#
- 1...exf3!
- threat
- 1.Bc7?
- Keys
- 1.Bg8!
- threat
- 2.Rd5#
- 1...Bxb8
- 2.Rxe7#
- 1...Sxb6
- 2.Qxc3#
- 1...Bc7
- 2.Rxe7#
- 1...e3
- 2.f4#
- 1...e6
- 2.Rxe6#
- threat
- 1.Bg8!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 4
- Sets
- R(l);N_GUARD::S(I),XR(l)
- R(l);N_GUARD::S(I)
- R(l);N_GUARD,N_SPINP(j),XR(J)::S(I)
- B(h);N_GUARD::R(J),XP(j)
- B(h);N_GUARD,XS(I)::R(J),XP(j)
- S(c);N_GUARD::QAB(C),XP(b)
- S(c);N_GUARD,XB(G)::QAB(C),XP(b)
- P(d);N_GUARD::P(D)
- P(j);OGATE::R1(J),XP(j)
- Tries
- Try
- B(G);P_PINB(h)
- Threat
- R(J),XP(j)
- Vars
- R(l);N_GUARD,N_SPINP(j),XR(J)::S(I)
- R(l);N_GUARD::S(I),XR(l)
- P(j);OGATE::R1(J),XP(j)
- Refutation
- B(h);N_SPINB(h),XB(G)
- Try
- R(J);N_PINP(j),XR(l)
- Threat
- S(I)
- Vars
- S(c);N_GUARD,XB(G)::QAB(C),XP(b)
- Refutation
- Q(k);XS(I)
- Try
- Q(C);
- Threat
- DUALS(3)
- Vars
- P(d);::QAR1(C)
- Refutation
- P(e);
- Try
- Q(C);
- Threat
- DUALS(2)
- Vars
- B(a);::QAR1(C)
- P(d);N_GUARD::P(D)
- Refutation
- P(d);XQ(C)
- Try
- Q(C);CHECK,XP(d)
- Vars
- B(a);SBLOCK,XQ(C)::P(D)
- Refutation
- K(f);P-FLIGHT,XQ(C)
- Try
- Q(C);
- Threat
- DUALS(3)
- Vars
- S(c);XB(G)::QAR1(C)
- P(d);::QAR1(C)
- Refutation
- P(e);
- Try
- Q(C);N_PINP(j),P_PINP(d)
- Threat
- P(D)
- Vars
- B(a);N_GUARD::S(B),XB(a)
- Refutation
- P(d);
- Try
- P(D);
- Threat
- DUALS(3)
- Vars
- B(a);XP(D)::QAB(C)
- Refutation
- P(d);XP(D)
- Try
- Actual
- B(H);
- Threat
- R1(A)
- Vars
- B(h);N_GUARD,XS(I)::R(J),XP(j)
- S(c);N_GUARD,XB(G)::QAB(C),XP(b)
- B(h);N_GUARD::R(J),XP(j)
- P(d);N_GUARD::P(D)
- P(j);OGATE::R1(J),XP(j)
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).