MESON Chess Problem Database
Problem Display
PID: 274211 (1Q1B1b2/3p1pp1/1N2kqnR/1N3Rp1/3P2Pp/7B/5K2/7b w - - 0 1)
Coello Alonso, Jose Antonio
BCPS Website, 2024
#2
10 + 10
SOLUTION
- SOUND
- Sets
- 1...Qxd4+
- 2.Sxd4#
- 1...Qe5
- 2.Rxe5#
- 2.Qxe5#
- 1...Qe7
- 2.Qe5#
- 1...Qxd8
- 2.Qe5#
- 1...Qxf5+
- 2.gxf5#
- 1...Bd6
- 2.Qxd6#
- 1...Sf4
- 2.Re5#
- 2.Qe5#
- 1...Se5
- 2.Qxe5#
- 1...Se7
- 2.Qe5#
- 2.Qd6#
- 1...Sh8
- 2.Qe5#
- 1...d5
- 2.Qc8#
- 1...d6
- 2.Sc7#
- 2.Qc8#
- 1...gxh6
- 2.Rxf6#
- 1...Qxd4+
- Tries
- 1.Sc4?
- threat
- 2.Sc7#
- 1...Qxd4+
- 2.Sxd4#
- 1...Qxd8
- 2.Qe5#
- 1...Qe5
- 2.Rxe5#
- 2.Qxe5#
- 1...d5
- 2.Qc8#
- 1...d6
- 2.Qc8#
- 1...Bd6
- 2.Qxd6#
- 1...Qxf5+!
- threat
- 1.Rxg6?
- threat
- 2.Qe5#
- 1...Bd6
- 2.Qxd6#
- 1...d6
- 2.Sc7#
- 2.Qc8#
- 1...fxg6!
- threat
- 1.Qg3?
- threat
- 2.Sc7#
- 1...Qxd4+
- 2.Sxd4#
- 1...Qxf5+
- 2.gxf5#
- 1...Qxd8
- 2.Qe5#
- 1...Qe5
- 2.Rxe5#
- 2.Qxe5#
- 1...Bd6
- 2.Qxd6#
- 1...Sf4
- 2.Re5#
- 1...Se5
- 2.Qxe5#
- 1...hxg3+!
- threat
- 1.Qf4?
- threat
- 2.Sc7#
- 1...Qxd4+
- 2.Sxd4#
- 1...Qxd8
- 2.Re5#
- 2.Qe5#
- 1...Sxf4
- 2.Re5#
- 1...Qe5
- 2.Rxe5#
- 2.Qxe5#
- 1...Bd6
- 2.Qxd6#
- 1...Se5
- 2.Rxe5#
- 2.Qxe5#
- 1...gxf4!
- threat
- 1.Qe5+?
- 1...Qxe5
- 2.Rxe5#
- 1...Sxe5!
- 1...Qxe5
- 1.Qc7?
- threat
- 2.Qxd7#
- 1...Qxd4+
- 2.Sxd4#
- 1...Qxf5+
- 2.gxf5#
- 1...Qxd8
- 2.Qe5#
- 1...Qe7
- 2.Qe5#
- 1...Se5
- 2.Qxe5#
- 1...d5
- 2.Qd7#
- 2.Qc8#
- 1...d6
- 2.Qd7#
- 2.Qc8#
- 1...Bc6!
- threat
- 1.Sc4?
- Keys
- 1.Qh2!
- threat
- 2.Sc7#
- 1...Qxd4+
- 2.Sxd4#
- 1...Qxf5+
- 2.gxf5#
- 1...Qxd8
- 2.Qe5#
- 1...Qe5
- 2.Rxe5#
- 2.Qxe5#
- 1...Bd6
- 2.Qxd6#
- 1...Sf4
- 2.Re5#
- 1...Se5
- 2.Qxe5#
- threat
- 1.Qh2!
This is a version of 274210
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 4
- Sets
- Q(e);CHECK,N_PINR(F),P_SPINS(f),XP(C)::S(E),XQ(e)
- Q(e);N_GUARD,N_PINR(F),P_SPINS(f)::QAR1(I)
- Q(e);N_GUARD,N_PINR(F),P_SPINS(f),XB(J)::QAR1(I)
- Q(e);CHECK,OGATE,P_SPINS(f),XR(F)::P(D),XQ(e)
- B(j);N_GUARD::QAR1(I),XB(j)
- S(f);N_GUARD,P_SPINQ(e)::QAR1(I),XS(f)
- S(f);N_GUARD,P_SPINQ(e)::QAR1(I)
- P(g);OGATEB::QAB(I)
- P(i);N_GUARD,XR(H)::R1(F),XQ(e)
- Tries
- Try
- S(G);
- Threat
- S(E)
- Vars
- Q(e);CHECK,N_PINR(F),P_SPINS(f),XP(C)::S(E),XQ(e)
- Q(e);N_GUARD,N_PINR(F),P_SPINS(f),XB(J)::QAR1(I)
- P(g);OGATEB::QAB(I)
- B(j);N_GUARD::QAR1(I),XB(j)
- Refutation
- Q(e);CHECK,P_SPINS(f),XR(F)
- Try
- R(H);P_PINQ(e),XS(f)
- Threat
- QAR1(I)
- Vars
- B(j);N_GUARD::QAR1(I),XB(j)
- Refutation
- P(h);N_SPINQ(e),XR(H)
- Try
- Q(I);
- Threat
- S(E)
- Vars
- Q(e);CHECK,N_PINR(F),P_SPINS(f),XP(C)::S(E),XQ(e)
- Q(e);CHECK,OGATE,P_SPINS(f),XR(F)::P(D),XQ(e)
- Q(e);N_GUARD,N_PINR(F),P_SPINS(f),XB(J)::QAR1(I)
- B(j);N_GUARD::QAR1(I),XB(j)
- S(f);N_PINR(F),P_SPINQ(e)::R1(F)
- S(f);N_GUARD,P_SPINQ(e)::QAR1(I),XS(f)
- Refutation
- P(b);CHECK,XQ(I)
- Try
- Q(I);N_SPINR(F)
- Threat
- S(E)
- Vars
- Q(e);CHECK,P_SPINS(f),XP(C)::S(E),XQ(e)
- S(f);N_GUARD,P_SPINQ(e),XQ(I)::R1(F)
- B(j);N_GUARD::QAR1(I),XB(j)
- Refutation
- P(c);XQ(I)
- Try
- Q(I);CHECK
- Vars
- Q(e);N_PINR(F),P_SPINS(f),XQ(I)::R1(F),XQ(e)
- Refutation
- S(f);P_SPINQ(e),XQ(I)
- Try
- Q(I);
- Threat
- QAB1(I),XP(g)
- Vars
- Q(e);CHECK,N_PINR(F),P_SPINS(f),XP(C)::S(E),XQ(e)
- Q(e);CHECK,OGATE,P_SPINS(f),XR(F)::P(D),XQ(e)
- Q(e);N_GUARD,N_PINR(F),P_SPINS(f),XB(J)::QAR1(I)
- Q(e);N_GUARD,N_PINR(F),P_SPINS(f)::QAR1(I)
- S(f);N_GUARD,P_SPINQ(e)::QAR1(I),XS(f)
- Refutation
- B(a);
- Try
- Actual
- Q(I);
- Threat
- S(E)
- Vars
- Q(e);CHECK,N_PINR(F),P_SPINS(f),XP(C)::S(E),XQ(e)
- Q(e);CHECK,OGATE,P_SPINS(f),XR(F)::P(D),XQ(e)
- Q(e);N_GUARD,N_PINR(F),P_SPINS(f),XB(J)::QAR1(I)
- B(j);N_GUARD::QAR1(I),XB(j)
- S(f);N_PINR(F),P_SPINQ(e)::R1(F)
- S(f);N_GUARD,P_SPINQ(e)::QAR1(I),XS(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).