MESON Chess Problem Database
Problem Display
PID: 242377 (K3R3/8/2R2p2/2pk3r/Q2B3b/p6B/2P2n2/7q w - - 0 1)
Morra, Juan Carlos
Problemas, 1961
#2
7 + 8
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Qe4
- 2.Rd8#
- 1...Se4
- 2.Be6#
- 1...cxd4
- 2.Qb5#
- 2.Qc4#
- 1...c4
- 2.Qxc4#
- 1...f5
- 2.Re5#
- 1...Qe4
- Tries
- 1.Bg2+?
- 1...Se4
- 2.Rd8#
- 1...Qxg2!
- 1...Se4
- 1.Ba1?
- threat
- 2.Be6#
- 2.Rd8#
- 2.c4#
- 1...Qxh3
- 2.c4#
- 1...Sxh3
- 2.Rd8#
- 2.c4#
- 1...Qe4
- 2.Rd8#
- 1...Qc1
- 2.Be6#
- 2.Rd8#
- 1...Qe1
- 2.Rd8#
- 2.c4#
- 1...Qf1
- 2.Be6#
- 2.Rd8#
- 1...Qh2
- 2.Be6#
- 2.c4#
- 1...Re5
- 2.Rd8#
- 1...Rf5
- 2.Rd8#
- 2.c4#
- 1...Rh7
- 2.Be6#
- 2.c4#
- 1...Rh8
- 2.Be6#
- 2.c4#
- 1...Bg3
- 2.Be6#
- 2.c4#
- 1...Se4
- 2.Be6#
- 2.c4#
- 1...Sg4
- 2.Rd8#
- 2.c4#
- 1...c4
- 2.Qb5#
- 2.Qxc4#
- 1...f5
- 2.Re5#
- 2.c4#
- 1...Qxa1!
- threat
- 1.Bb2?
- threat
- 2.Be6#
- 2.Rd8#
- 2.c4#
- 1...Qxh3
- 2.c4#
- 1...Sxh3
- 2.Rd8#
- 2.c4#
- 1...Qe4
- 2.Rd8#
- 1...Qc1
- 2.Be6#
- 2.Rd8#
- 1...Qe1
- 2.Rd8#
- 2.c4#
- 1...Qf1
- 2.Be6#
- 2.Rd8#
- 1...Qh2
- 2.Be6#
- 2.c4#
- 1...Re5
- 2.Rd8#
- 1...Rf5
- 2.Rd8#
- 2.c4#
- 1...Rh7
- 2.Be6#
- 2.c4#
- 1...Rh8
- 2.Be6#
- 2.c4#
- 1...Bg3
- 2.Be6#
- 2.c4#
- 1...Se4
- 2.Be6#
- 2.c4#
- 1...Sg4
- 2.Rd8#
- 2.c4#
- 1...c4
- 2.Qb5#
- 2.Qxc4#
- 1...f5
- 2.Re5#
- 2.c4#
- 1...axb2!
- threat
- 1.Bxf2?
- threat
- 2.c4#
- 1...Qe4
- 2.Qxe4#
- 1...Qc1
- 2.Bg2#
- 2.Qe4#
- 1...Qf1
- 2.Qe4#
- 1...Re5
- 2.Rd8#
- 1...c4
- 2.Qb5#
- 2.Qxc4#
- 1...Bxf2!
- threat
- 1.Bc3?
- threat
- 2.Be6#
- 2.Rd8#
- 1...Sxh3
- 2.Rd8#
- 1...Qe4
- 2.Rd8#
- 1...Qe1
- 2.Rd8#
- 1...Qh2
- 2.Be6#
- 1...Re5
- 2.Rd8#
- 1...Rf5
- 2.Rd8#
- 1...Rh7
- 2.Be6#
- 1...Rh8
- 2.Be6#
- 1...Bg3
- 2.Be6#
- 1...Se4
- 2.Be6#
- 1...Sg4
- 2.Rd8#
- 1...c4
- 2.Qb5#
- 2.Qxc4#
- 1...f5
- 2.Re5#
- 1...Qxh3!
- threat
- 1.Bxf6?
- threat
- 2.Be6#
- 2.Rd8#
- 2.c4#
- 1...Qxh3
- 2.c4#
- 1...Sxh3
- 2.Rd8#
- 2.c4#
- 1...Qe4
- 2.Rd8#
- 1...Qc1
- 2.Be6#
- 2.Rd8#
- 1...Qe1
- 2.Rd8#
- 2.c4#
- 1...Qf1
- 2.Be6#
- 2.Rd8#
- 1...Qh2
- 2.Be6#
- 2.c4#
- 1...Re5
- 2.Rxe5#
- 2.Rd8#
- 1...Rf5
- 2.Rd8#
- 2.c4#
- 1...Rh7
- 2.Be6#
- 2.Re5#
- 2.c4#
- 1...Rh8
- 2.Be6#
- 2.c4#
- 1...Bg3
- 2.Be6#
- 2.c4#
- 1...Se4
- 2.Be6#
- 2.c4#
- 1...Sg4
- 2.Rd8#
- 2.c4#
- 1...c4
- 2.Qb5#
- 2.Qxc4#
- 1...Bxf6!
- threat
- 1.Bg2+?
- Keys
- 1.Be5!
- threat
- 2.Rd6#
- 1...Rxe5
- 2.Rd8#
- 1...fxe5
- 2.Be6#
- 1...c4
- 2.Qxc4#
- 1...Se4
- 2.c4#
- threat
- 1.Be5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 2
- REMOVED MATES = 2
- Sets
- Q(a);SBLOCK::R(G)
- S(b);SBLOCK::B(B)
- P(e);::QAB1(C),XP(e)
- P(h);N_GUARD,S_CUTR(g)::R1(G)
- Tries
- Try
- B(B);CHECK
- Vars
- S(b);P_SPINS(b)::R(G)
- Refutation
- Q(a);XB(B)
- Try
- B(D);
- Threat
- DUALS(3)
- Vars
- Q(a);XB(B)::P(A)
- Q(a);::R(G)
- R(g);::R(G)
- Refutation
- Q(a);XB(D)
- Try
- B(D);
- Threat
- DUALS(3)
- Vars
- Q(a);XB(B)::P(A)
- Q(a);::R(G)
- R(g);::R(G)
- Refutation
- P(c);XB(D)
- Try
- B(D);XS(b)
- Threat
- P(A)
- Vars
- Q(a);N_GUARD::QAB1(C),XQ(a)
- Q(a);N_GUARD::QAB1(C)
- R(g);SBLOCK::R(G)
- Refutation
- B(d);XB(D)
- Try
- B(D);
- Threat
- DUALS(2)
- Vars
- S(b);XB(B)::R(G)
- Q(a);::R(G)
- Q(a);::B(B)
- R(g);::R(G)
- R(g);::B(B)
- R(g);P_PINR(G)::B(B)
- B(d);::B(B)
- S(b);::B(B)
- S(b);::R(G)
- P(h);N_GUARD,S_CUTR(g)::R1(G)
- Refutation
- Q(a);XB(B)
- Try
- B(D);XP(h)
- Threat
- DUALS(3)
- Vars
- Q(a);XB(B)::P(A)
- Q(a);::R(G)
- Refutation
- B(d);XB(D)
- Try
- Actual
- B(D);
- Threat
- R1(E)
- Vars
- R(g);SBLOCK,XB(D)::R(G)
- P(h);SBLOCK,XB(D)::B(B)
- P(e);::QAB1(C),XP(e)
- S(b);SBLOCK::P(A)
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).