MESON Chess Problem Database
Problem Display
PID: 98234 (3rBRN1/2b1p3/1N2k1pn/Q7/8/r6n/P2P1p1B/5K2 w - - 0 1)
Llamas, Juan Garcia
Problemas, 1963
#2
9 + 9
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Rd5
- 2.Qxd5#
- 1...Rd6
- 2.Qe5#
- 1...Rd7
- 2.Bxd7#
- 1...Ra8
- 2.Bd7#
- 2.Qd5#
- 1...Rb8
- 2.Bd7#
- 2.Qd5#
- 1...Rc8
- 2.Bd7#
- 2.Qd5#
- 1...Rxe8
- 2.Qd5#
- 1...Be5
- 2.Qxe5#
- 1...Bxb6
- 2.Qe5#
- 1...Bd6
- 2.Qd5#
- 1...Sg4
- 2.Bf7#
- 1...Sf5
- 2.Bf7#
- 1...Sf7
- 2.Bxf7#
- 1...Rd5
- Tries
- 1.Qxa3?
- threat
- 2.Qxe7#
- 1...Rxe8
- 2.Qb3#
- 1...Sxg8
- 2.Qxh3#
- 1...Sf7
- 2.Qxh3#
- 1...Rd6
- 2.Qe3#
- 1...Rd7
- 2.Bxd7#
- 1...Bd6
- 2.Qb3#
- 1...Sf5
- 2.Bf7#
- 1...Bxb6!
- threat
- 1.Qc5?
- threat
- 2.Qxe7#
- 1...Rxe8
- 2.Qc4#
- 2.Qd5#
- 1...Bxb6
- 2.Qe5#
- 1...Rd6
- 2.Qe5#
- 1...Rd7
- 2.Bxd7#
- 1...Bd6
- 2.Qc4#
- 2.Qd5#
- 1...Sf5
- 2.Bf7#
- 1...Sf7
- 2.Bxf7#
- 1...Sxg8!
- threat
- 1.Qf5+?
- 1...Sxf5
- 2.Bf7#
- 1...gxf5!
- 1...Sxf5
- 1.Qg5?
- threat
- 2.Qxe7#
- 2.Qxg6#
- 1...Rxe8
- 2.Qd5#
- 2.Qxg6#
- 1...Bxh2
- 2.Qxe7#
- 1...Bxb6
- 2.Qe5#
- 1...Sxg8
- 2.Bf7#
- 2.Qg4#
- 1...Rg3
- 2.Qxe7#
- 1...Bg3
- 2.Qxe7#
- 1...Bf4
- 2.Qxe7#
- 1...Be5
- 2.Qxe7#
- 2.Qxe5#
- 1...Sf4
- 2.Qxe7#
- 1...Rf3
- 2.Qxe7#
- 1...Rd7
- 2.Bxd7#
- 2.Qxg6#
- 1...Bd6
- 2.Qd5#
- 2.Qxg6#
- 1...Sg4
- 2.Bf7#
- 2.Qxe7#
- 2.Qxg4#
- 1...Sf5
- 2.Bf7#
- 2.Qxg6#
- 1...Sf7
- 2.Bxf7#
- 2.Qg4#
- 2.Qxg6#
- 1...Sxg5!
- threat
- 1.Qxa3?
- Keys
- 1.Qb4!
- threat
- 2.Qxe7#
- 1...Rxe8
- 2.Qc4#
- 1...Bxb6
- 2.Qe4#
- 1...Sxg8
- 2.Qg4#
- 1...Sf7
- 2.Qg4#
- 1...Rd6
- 2.Qe4#
- 1...Rd7
- 2.Bxd7#
- 1...Bd6
- 2.Qc4#
- 1...Sf5
- 2.Bf7#
- threat
- 1.Qb4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 5
- ADDED MATES = 1
- REMOVED MATES = 3
- Sets
- R(i);N_GUARD::QAB1(E),XR(i)
- R(i);S_CUTB(g)::QAR1(E)
- R(i);N_GUARD::B(G),XR(i)
- R(i);N_GUARD,XB(G)::QAB1(E)
- B(g);N_GUARD::QAR1(E),XB(g)
- B(g);N_GUARD,XS(F)::QAR1(E)
- B(g);S_CUTR(i)::QAB1(E)
- S(f);N_GUARD::B(G)
- S(f);N_GUARD::B(G),XS(f)
- Tries
- Try
- Q(E);XR(b)
- Threat
- QAR1(E),XP(h)
- Vars
- R(i);N_GUARD,XB(G)::QAB(E)
- S(f);N_GUARD,XS(I)::QAB(E),XS(c)
- S(f);N_GUARD::QAB(E),XS(c)
- R(i);S_CUTB(g)::QAR(E)
- R(i);N_GUARD::B(G),XR(i)
- B(g);S_CUTR(i)::QAB(E)
- S(f);N_GUARD,SBLOCK::B(G)
- Refutation
- B(g);XS(F)
- Try
- Q(E);
- Threat
- QAR1(E),XP(h)
- Vars
- B(g);N_GUARD,XS(F)::QAR1(E)
- R(i);S_CUTB(g)::QAR1(E)
- R(i);N_GUARD::B(G),XR(i)
- S(f);N_GUARD::B(G)
- S(f);N_GUARD::B(G),XS(f)
- Refutation
- S(f);XS(I)
- Try
- Q(E);CHECK
- Vars
- S(f);SBLOCK,XQ(E)::B(G)
- Refutation
- P(e);XQ(E)
- Try
- Q(E);
- Threat
- DUALS(2)
- Vars
- B(g);XB(D)::QAR1(E),XP(h)
- B(g);N_GUARD,XS(F)::QAR1(E)
- R(b);::QAR1(E),XP(h)
- B(g);::QAR1(E),XP(h)
- S(c);::QAR1(E),XP(h)
- Refutation
- S(c);XQ(E)
- Try
- Actual
- Q(E);
- Threat
- QAR1(E),XP(h)
- Vars
- R(i);N_GUARD,XB(G)::QAB(E)
- B(g);N_GUARD,XS(F)::QAR2(E)
- S(f);N_GUARD,XS(I)::QAB(E)
- S(f);N_GUARD::QAB(E)
- R(i);S_CUTB(g)::QAR2(E)
- R(i);N_GUARD::B(G),XR(i)
- B(g);S_CUTR(i)::QAB(E)
- S(f);N_GUARD,SBLOCK::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).