MESON Chess Problem Database
Problem Display
PID: 265627 (4r2n/1P2P3/1KN3pR/2PkPQP1/1pp5/3n1R1N/8/b3qB2 w - - 0 1)
Uris, Miguel
Candela MT (Problemas), 2018
#2
12 + 9
SOLUTION
- SOUND
- Sets
- 1...Qe4
- 2.Qd7#
- 1...Rd8
- 2.exd8Q#
- 2.exd8R#
- 1...Sc1
- 2.Sf4#
- 1...Sb2
- 2.Sf4#
- 1...Sf2
- 2.Sf4#
- 1...Sf4
- 2.Sxf4#
- 1...Sxc5
- 2.Sf4#
- 1...Sxe5
- 2.Sf4#
- 1...Qe4
- Tries
- 1.Bg2?
- threat
- 2.Rxd3#
- 2.Re3#
- 1...Sxc5
- 2.Sf4#
- 2.Rd3#
- 1...Sxe5
- 2.Sf4#
- 2.Rd3#
- 2.Re3#
- 1...Qd2
- 2.Rf2#
- 2.Rxd3#
- 1...Qf2
- 2.Rxf2#
- 2.Rxd3#
- 1...Qg3
- 2.Rxd3#
- 2.Rxg3#
- 1...Qh4
- 2.Rxd3#
- 2.Rf4#
- 1...Qd1
- 2.Rxd3#
- 1...Qf1
- 2.Rxf1#
- 2.Rxd3#
- 1...Qg1
- 2.Rxd3#
- 1...Qh1
- 2.Rxd3#
- 1...Qe2
- 2.Rxd3#
- 1...Qe3
- 2.Rxe3#
- 1...Qe4
- 2.Qd7#
- 1...Bd4
- 2.Re3#
- 1...Sc1
- 2.Sf4#
- 2.Rd3#
- 2.Re3#
- 1...Sb2
- 2.Sf4#
- 2.Rd3#
- 2.Re3#
- 1...Sf2
- 2.Sf4#
- 2.Rd3#
- 1...Sf4
- 2.Sxf4#
- 2.Rd3#
- 1...c3!
- threat
- 1.Bxd3?
- threat
- 2.Sf4#
- 2.Qd7#
- 1...Qxe5
- 2.Sf4#
- 2.Be4#
- 1...Rxe7
- 2.Sf4#
- 1...Bxe5
- 2.Sf4#
- 1...gxf5
- 2.Sf4#
- 2.Rd6#
- 1...Qd2
- 2.Be4#
- 2.Qd7#
- 1...Qg3
- 2.Be4#
- 2.Qd7#
- 1...Qh4
- 2.Qd7#
- 1...Qc1
- 2.Be4#
- 2.Qd7#
- 1...Qe3
- 2.Qd7#
- 1...Qe4
- 2.Bxe4#
- 2.Qd7#
- 1...Rd8
- 2.Sf4#
- 2.exd8Q#
- 2.exd8R#
- 1...Sf7
- 2.Sf4#
- 2.Qxf7#
- 1...cxd3!
- threat
- 1.Rxd3+?
- 1...Bd4
- 2.Sf4#
- 2.Rxd4#
- 1...cxd3!
- 1...Bd4
- 1.Qxd3+?
- 1...Ke6
- 2.Rf6#
- 2.Qd6#
- 1...Bd4
- 2.Sf4#
- 1...cxd3!
- 1...Ke6
- 1.Bg2?
- Keys
- 1.Rf4!
- threat
- 2.Qd7#
- 1...Qxe5
- 2.Bg2#
- 1...Rxe7
- 2.Sxe7#
- 1...Bxe5
- 2.Rd4#
- 1...Sxf4
- 2.Sxf4#
- 1...Sxc5
- 2.Bxc4#
- 1...Sxe5
- 2.Bxc4#
- 1...gxf5
- 2.Rd6#
- 1...Rd8
- 2.exd8Q#
- 2.exd8R#
- 1...Sf7
- 2.Qxf7#
- threat
- 1.Rf4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 5
- REMOVED MATES = 4
- Sets
- Q(b);SBLOCK::QAR2(F)
- R(h);OGATE::PXR(h)=Q
- S(c);N_GUARD::S(C)
- S(c);N_GUARD::S(C),XS(c)
- S(c);N_GUARD,XP(D)::S(C)
- S(c);N_GUARD,P_SPINS(c),XP(E)::S(C)
- Tries
- Try
- B(A);
- Threat
- DUALS(2)
- Vars
- Q(b);::B(A)+R(B),DCHECK,XS(c)
- Q(b);P_PINP(D)::B(A)+R(B),DCHECK,XS(c)
- Q(b);P_PINP(D)::B(A)+R(B),XQ(b)
- Q(b);SBLOCK::QAR2(F)
- B(a);P_PINP(D)::B(A)+R(B)
- Refutation
- P(e);
- Try
- B(A);XS(c)
- Threat
- DUALS(2)
- Vars
- R(h);XP(L)::S(C)
- B(a);P_SPINB(a),XP(E)::S(C)
- Q(b);::QAR2(F)
- Q(b);P_PINP(D)::QAR2(F)
- Refutation
- P(e);XB(A)
- Try
- R(B);CHECK,XS(c)
- Refutation
- P(e);XR(B)
- Try
- Q(F);CHECK,XS(c)
- Vars
- B(a);P_PINP(D),P_SPINB(a)::S(C)
- Refutation
- P(e);XQ(F)
- Try
- Actual
- R(B);
- Threat
- QAR2(F)
- Vars
- Q(b);N_GUARD,P_SPINQ(b),XP(E)::B(A)
- R(h);XP(L)::S(I),XR(h)
- B(a);N_GUARD,P_SPINB(a),XP(E)::R1(B)
- S(c);XR(B)::S(C),XS(c)
- S(c);OGATE,XP(D)::B(A),XP(e)
- S(c);OGATE,P_SPINS(c),XP(E)::B(A),XP(e)
- P(g);OGATE,XQ(F)::R1(J)
- R(h);OGATE::PXR(h)=Q
- S(i);N_GUARD::QAB(F),XS(i)
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).