MESON Chess Problem Database
Problem Display
PID: 268757 (2qR3B/3Bp1r1/2p5/N1p3Pp/1pP1k3/1Nbp2Qn/4P1K1/2n2R2 w - - 0 1)
Uris, Miguel
Problemas, 2020
#2
11 + 12
SOLUTION
- SOUND
- Sets
- 1...Qa6
- 2.Bf5#
- 1...Qb7
- 2.Bf5#
- 1...Qc7
- 2.Bf5#
- 1...Qa8
- 2.Bf5#
- 1...Qb8
- 2.Bf5#
- 2.Bxc6#
- 1...Qxd8
- 2.Bf5#
- 1...Rg6
- 2.Sxc5#
- 2.Qf3#
- 1...Rf7
- 2.Sxc5#
- 1...Rh7
- 2.Sxc5#
- 2.Qf3#
- 1...Rg8
- 2.Sxc5#
- 2.Qf3#
- 1...Bd4
- 2.Sd2#
- 1...Be5
- 2.Qf3#
- 1...Sa2
- 2.exd3#
- 1...Sg1
- 2.Qf4#
- 1...Sf4+
- 2.Qxf4#
- 1...Sxg5
- 2.Qf4#
- 1...e5
- 2.Qf3#
- 1...Qa6
- Tries
- 1.Sd2+?
- 1...Kd4
- 2.Bxc8#
- 2.e3#
- 1...Bxd2!
- 1...Kd4
- 1.Sxc6?
- threat
- 2.Sxc5#
- 2.Qf3#
- 1...Sf4+
- 2.Rxf4#
- 2.Qxf4#
- 1...Qxc6
- 2.Bf5#
- 2.Bxc6#
- 1...Sxb3
- 2.Qxd3#
- 2.Qf3#
- 2.exd3#
- 1...Sxg5
- 2.Sxc5#
- 2.Rf4#
- 2.Qf4#
- 1...Rf7
- 2.Sxc5#
- 1...Bd4
- 2.Sd2#
- 2.Qf3#
- 1...Sg1
- 2.Sxc5#
- 2.Rf4#
- 2.Qf4#
- 1...Rxg5!
- threat
- 1.Bxh3?
- threat
- 2.Sxc5#
- 2.Qf4#
- 1...Qxd8
- 2.Bf5#
- 2.Qf4#
- 1...Rxg5
- 2.Rf4#
- 1...Sxe2
- 2.Sxc5#
- 1...Sxb3
- 2.Qf4#
- 2.exd3#
- 1...Qg4
- 2.Sxc5#
- 1...Qf5
- 2.Bxf5#
- 1...Qd7
- 2.Qf4#
- 1...Qc7
- 2.Sxc5#
- 2.Bf5#
- 1...Qb8
- 2.Sxc5#
- 2.Bf5#
- 1...Rf7
- 2.Sxc5#
- 1...Bd2
- 2.Sxd2#
- 2.Sxc5#
- 1...Bd4
- 2.Sd2#
- 2.Qf4#
- 1...Be5
- 2.Sd2#
- 2.Sxc5#
- 2.Qf3#
- 1...e5
- 2.Sxc5#
- 2.Qf3#
- 1...Qxh3+!
- threat
- 1.Bg4?
- threat
- 2.Sxc5#
- 1...Sf4+
- 2.Qxf4#
- 1...Qxd8
- 2.Bf5#
- 1...Rxg5
- 2.Qf3#
- 1...Sxb3
- 2.exd3#
- 1...Qf5
- 2.Bxf5#
- 1...Bd4
- 2.Sd2#
- 1...Qd7!
- threat
- 1.Bxc8?
- threat
- 2.Sxc5#
- 2.Bf5#
- 1...Sf4+
- 2.Qxf4#
- 1...Sxb3
- 2.Bf5#
- 2.exd3#
- 1...Rf7
- 2.Sxc5#
- 1...Bd4
- 2.Sd2#
- 2.Bf5#
- 1...Sf2
- 2.Sxc5#
- 1...e6
- 2.Sxc5#
- 1...Rxg5!
- threat
- 1.Qxd3+?
- 1...Ke5
- 2.Bxg7#
- 2.Rf5#
- 1...Sxd3!
- 1...Ke5
- 1.Qg4+?
- 1...Ke3
- 2.Qf3#
- 1...Ke5
- 2.Qe6#
- 1...Sf4+
- 2.Qxf4#
- 1...hxg4!
- 1...Ke3
- 1.Sd2+?
- Keys
- 1.Rf5!
- threat
- 2.Qf3#
- 1...Sf4+
- 2.Qxf4#
- 1...Rxg5
- 2.Sxc5#
- 1...Sxb3
- 2.Qxd3#
- 1...Sxg5
- 2.Qf4#
- 1...Sg1
- 2.Qf4#
- threat
- 1.Rf5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 10
- Sets
- Q(l);N_GUARD::B(I)
- Q(l);N_GUARD,XR(J)::B(I)
- R(k);::S(D),XP(g)
- B(b);N_GUARD,SBLOCK::S(D)
- B(b);SBLOCK::QAB1(E)
- S(a);N_GUARD::P(B),XP(c)
- S(d);N_GUARD::QAR1(E)
- S(d);CHECK,N_GUARD::QAR1(E),XS(d)
- S(d);N_GUARD,XP(H)::QAR1(E)
- P(j);SBLOCK::QAB1(E)
- Tries
- Try
- S(D);CHECK
- Refutation
- B(b);XS(D)
- Try
- S(G);XP(i)
- Threat
- DUALS(2)
- Vars
- R(k);::S(D),XP(g)
- Refutation
- R(k);P_PINQ(E),XP(H)
- Try
- B(I);XS(d)
- Threat
- DUALS(2)
- Vars
- R(k);P_PINQ(E),XP(H)::R1(A)
- S(a);XP(B)::S(D),XP(g)
- Q(l);P_PINQ(E)::S(D),XP(g)
- Q(l);N_GUARD::B(I),XQ(l)
- Q(l);::QAR1(E)
- R(k);::S(D),XP(g)
- Refutation
- Q(l);CHECK,XB(I)
- Try
- B(I);
- Threat
- S(D),XP(g)
- Vars
- S(d);CHECK,N_GUARD::QAR1(E),XS(d)
- Q(l);N_GUARD,XR(J)::B(I)
- R(k);XP(H)::QAB1(E)
- S(a);N_GUARD,XS(D)::P(B),XP(c)
- Q(l);N_GUARD::B(I),XQ(l)
- B(b);N_GUARD::S(D)
- Refutation
- Q(l);
- Try
- B(I);XQ(l)
- Threat
- DUALS(2)
- Vars
- S(d);CHECK,N_GUARD::QAR1(E),XS(d)
- R(k);::S(D),XP(g)
- S(d);::S(D),XP(g)
- P(j);::S(D),XP(g)
- Refutation
- R(k);P_PINQ(E),XP(H)
- Try
- Q(E);CHECK,P_SPINP(H),XP(c)
- Refutation
- S(a);XQ(E)
- Try
- Q(E);CHECK
- Vars
- K(f);N_GUARD,P-FLIGHT::QAR1(E)
- K(f);P-FLIGHT,P_SPINR(k),S_CUTB(b)::QAR1(E)
- S(d);CHECK,N_GUARD,P_SPINS(d)::QAR1(E),XS(d)
- Refutation
- P(h);XQ(E)
- Try
- Actual
- R(A);
- Threat
- QAB1(E)
- Vars
- S(d);CHECK,N_GUARD::QAR1(E),XS(d)
- R(k);P_PINQ(E),XP(H)::S(D),XP(g)
- S(a);N_GUARD,XS(D)::QAB1(E),XP(c)
- S(d);N_GUARD,XP(H)::QAR1(E)
- S(d);N_GUARD::QAR1(E)
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).