MESON Chess Problem Database
Problem Display
PID: 239020 (5Nq1/2KPQ3/2p3Rp/2r2B2/R2N1k1P/3p1p2/3P1Pnb/B3r2n w - - 0 1)
Petite, Efren
Problemas, 2014
#2
12 + 11
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Qa2
- 2.Rg4#
- 1...Qb3
- 2.Rg4#
- 1...Qc4
- 2.Rg4#
- 1...Qd5
- 2.Rg4#
- 1...Qf7
- 2.Rg4#
- 1...Qh7
- 2.Rg4#
- 1...Qxg6
- 2.Sxg6#
- 1...Qxf8
- 2.Rg4#
- 1...Qh8
- 2.Rg4#
- 1...Rxa1
- 2.Qe4#
- 1...Rb1
- 2.Qe4#
- 1...Rec1
- 2.Qe4#
- 1...Rd1
- 2.Qe4#
- 1...Rf1
- 2.Qe4#
- 1...Rg1
- 2.Qe4#
- 1...Re4
- 2.Qxe4#
- 1...Rxf5
- 2.Se2#
- 2.Sde6#
- 1...Se3
- 2.Qe4#
- 1...Qa2
- Tries
- 1.Bxd3?
- threat
- 2.Se2#
- 2.Sde6#
- 1...Rxa1
- 2.Se2#
- 2.Qe4#
- 1...Qe6
- 2.Se2#
- 2.Sdxe6#
- 1...Re6
- 2.Se2#
- 2.Sdxe6#
- 1...Re2
- 2.Sxe2#
- 2.Sde6#
- 1...Re4
- 2.Qxe4#
- 1...Rc3
- 2.Se2#
- 2.Qf6#
- 1...Rc4
- 2.Qf6#
- 1...Qc4!
- threat
- 1.Bh3?
- threat
- 2.Se2#
- 2.Sde6#
- 1...Rxa1
- 2.Se2#
- 1...Qe6
- 2.Se2#
- 2.Sdxe6#
- 1...Re6
- 2.Se2#
- 2.Sdxe6#
- 1...Qc4
- 2.Rg4#
- 1...Re2
- 2.Sxe2#
- 2.Sde6#
- 1...Rc3
- 2.Se2#
- 2.Rf6#
- 1...Rc4
- 2.Rf6#
- 1...Re4!
- threat
- 1.Qf6?
- threat
- 2.Se2#
- 2.Sde6#
- 1...Qc4
- 2.Rg4#
- 1...Qe6
- 2.Se2#
- 2.Sdxe6#
- 2.Rg4#
- 1...Re2
- 2.Sxe2#
- 2.Sde6#
- 1...Re6
- 2.Se2#
- 2.Sdxe6#
- 1...Rc4
- 2.Bxd3#
- 1...Re4!
- threat
- 1.Bxd3?
- Keys
- 1.Rf6!
- threat
- 2.Se2#
- 2.Sde6#
- 1...Rxa1
- 2.Se2#
- 2.Qe4#
- 1...Sxf2
- 2.Se2#
- 1...Sxh4
- 2.Sde6#
- 1...Qe6
- 2.Se2#
- 2.Sdxe6#
- 2.Sg6#
- 1...Re6
- 2.Se2#
- 2.Sdxe6#
- 1...Qc4
- 2.Sg6#
- 1...Re2
- 2.Sxe2#
- 2.Sde6#
- 1...Re4
- 2.Qxe4#
- 1...Rc3
- 2.Se2#
- 2.Bh3#
- 1...Rc4
- 2.Bh3#
- threat
- 1.Rf6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 3
- REMOVED MATES = 15
- Sets
- Q(k);N_GUARD::R1(H)
- Q(k);XR(H)::S(L),XQ(k)
- Q(k);N_GUARD,XS(L)::R1(H)
- R(a);N_GUARD,XB(A)::QAR1(K)
- R(a);N_GUARD::QAR1(K)
- R(a);N_GUARD::QAR1(K),XR(a)
- S(c);S_CUTR(a)::QAR1(K)
- Tries
- Try
- B(G);XP(e)
- Threat
- DUALS(2)
- Vars
- R(a);N_GUARD::QAR1(K),XR(a)
- R(h);N_GUARD::QAR2(K)
- Refutation
- Q(k);
- Try
- B(G);
- Threat
- DUALS(2)
- Vars
- R(a);XB(A)::R(D)+S(E),DCHECK
- Q(k);N_GUARD::R1(H)
- R(h);N_GUARD::R(H)
- Refutation
- R(a);
- Try
- Q(K);
- Threat
- DUALS(2)
- Vars
- Q(k);N_GUARD::R1(H)
- R(h);N_GUARD::QAR(K)+B(G),XP(e)
- Refutation
- R(a);
- Try
- Actual
- R(H);
- Threat
- DUALS(2)
- Vars
- S(b);XP(C)::R(D)+S(E),DCHECK
- S(c);XP(F)::R(D)+S(E),DCHECK
- Q(k);N_GUARD::S(L)
- R(a);N_GUARD::QAR1(K),XR(a)
- R(h);N_GUARD::R(H)+B(G)
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).