MESON Chess Problem Database
Problem Display
PID: 245347 (6B1/2p5/3p2K1/1N1P2pN/Rn1Pk1r1/1p2n1r1/b2BP3/2Q5 w - - 0 1)
Onkoud, Abdelaziz
Pat a Mat, 2010
#2
10 + 10
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Rf4
- 2.Sxg3#
- 1...Sd1
- 2.Sf6#
- 1...Sf1
- 2.Sf6#
- 1...Sec2
- 2.Sf6#
- 1...Sg2
- 2.Sf6#
- 1...Sc4
- 2.Sf6#
- 1...Sf5
- 2.Sf6#
- 1...Sbc2
- 2.Sc3#
- 1...Sd3
- 2.Sc3#
- 1...Sa6
- 2.Sc3#
- 1...Sc6
- 2.Sc3#
- 1...Rf4
- Tries
- 1.Sxd6+?
- 1...Kxd4
- 2.Qc3#
- 1...cxd6!
- 1...Kxd4
- 1.Rxb4?
- threat
- 2.Sc3#
- 1...Sd1
- 2.Sf6#
- 1...Sf1
- 2.Sf6#
- 1...Sc2
- 2.Sf6#
- 1...Sg2
- 2.Sf6#
- 1...Sc4
- 2.Sf6#
- 1...Sf5
- 2.Sf6#
- 1...Sxd5!
- threat
- 1.Qb1+?
- 1...Sec2
- 2.Sf6#
- 1...Sbc2
- 2.Sc3#
- 1...Sd3
- 2.Sc3#
- 2.Qxd3#
- 1...Bxb1!
- 1...Sec2
- 1.Qf1?
- threat
- 2.Sf6#
- 1...Sexd5
- 2.Qf5#
- 1...Rf3
- 2.Qxf3#
- 2.exf3#
- 1...Rf4
- 2.Sxg3#
- 1...Sbxd5!
- threat
- 1.Qh1+?
- 1...Rf3
- 2.Qxf3#
- 1...Sg2
- 2.Sf6#
- 1...Rg2!
- 1...Rf3
- 1.Qc2+?
- 1...Sexc2
- 2.Sf6#
- 1...Sbxc2
- 2.Sc3#
- 1...Sd3
- 2.Sc3#
- 2.Qxd3#
- 1...bxc2!
- 1...Sexc2
- 1.Qc4?
- threat
- 2.Sc3#
- 1...Sxc4
- 2.Sf6#
- 1...Sbxd5
- 2.Qd3#
- 1...Sd1
- 2.Sf6#
- 1...Sf1
- 2.Sf6#
- 1...Sec2
- 2.Sf6#
- 1...Sg2
- 2.Sf6#
- 1...Sf5
- 2.Sf6#
- 1...Sexd5!
- threat
- 1.Qxc7?
- threat
- 2.Qe7#
- 1...Sbxd5
- 2.Sxd6#
- 1...Sc4
- 2.Sf6#
- 1...Sf5
- 2.Sf6#
- 1...Sd3
- 2.Sc3#
- 2.Sxd6#
- 1...Sc6
- 2.Sc3#
- 2.Sxd6#
- 1...Sexd5!
- threat
- 1.Sxd6+?
- Keys
- 1.Qc6!
- threat
- 2.Qe8#
- 1...Sexd5
- 2.Sf6#
- 1...Sbxd5
- 2.Sc3#
- 1...Sxc6
- 2.Sc3#
- 1...Sc4
- 2.Sf6#
- 1...Sf5
- 2.Sf6#
- 1...Sd3
- 2.Sc3#
- threat
- 1.Qc6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 7
- Sets
- R(g);N_GUARD,SBLOCK::S(H),XR(d)
- S(c);::S(H)
- S(e);::S(F)
- Tries
- Try
- S(F);CHECK,XP(i)
- Vars
- K(f);P-FLIGHT,P_SPINS(e),XP(E)::QAB1(A)
- Refutation
- P(j);XS(F)
- Try
- R(D);XS(e)
- Threat
- S(F)
- Vars
- S(c);::S(H)
- Refutation
- S(c);XP(G)
- Try
- Q(A);CHECK
- Vars
- S(c);P_SPINS(c)::S(H)
- S(e);P_SPINS(e)::S(F)
- Refutation
- B(a);XQ(A)
- Try
- Q(A);
- Threat
- S(H)
- Vars
- S(c);N_GUARD,XP(G)::QAB1(A)
- R(g);N_GUARD::S(H),XR(d)
- Refutation
- S(e);XP(G)
- Try
- Q(A);CHECK
- Vars
- R(d);N_GUARD,P_SPINR(d)::QAB1(A),XR(d)
- S(c);P_SPINS(c)::S(H)
- Refutation
- R(d);P_SPINR(d)
- Try
- Q(A);CHECK
- Vars
- S(c);XQ(A)::S(H)
- S(e);XQ(A)::S(F)
- Refutation
- P(b);XQ(A)
- Try
- Q(A);
- Threat
- S(F)
- Vars
- S(c);XQ(A)::S(H)
- S(e);N_GUARD,XP(G)::QAB1(A)
- S(c);::S(H)
- Refutation
- S(c);XP(G)
- Try
- Q(A);XP(j)
- Threat
- QAR(A)
- Vars
- S(e);XP(G)::S(F),XP(i)
- S(c);::S(H)
- Refutation
- S(c);XP(G)
- Try
- Actual
- Q(A);
- Threat
- QAR(A)
- Vars
- S(c);P_SPINS(c),XP(G)::S(H)
- S(e);P_SPINS(e),XP(G)::S(F)
- S(e);XQ(A)::S(F)
- S(c);::S(H)
- S(e);::S(F)
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).