MESON Chess Problem Database
Problem Display
PID: 262978 (r7/4P3/2p1R3/3P1k1p/q2B4/pN2p1Q1/3P1pnP/1b3NbK w - - 0 1)
Zabirokhin, Piotr
Zadachi i Etyudi, 2008
#2
10 + 11
SOLUTION
- SOUND
- Sets
- 1...Qxd4
- 2.Sxd4#
- 1...Rf8
- 2.exf8Q#
- 2.exf8R#
- 1...Be4
- 2.Rf6#
- 1...Se1
- 2.Sxe3#
- 1...Sf4
- 2.Sxe3#
- 1...Sh4
- 2.Sxe3#
- 1...Qxd4
- Tries
- 1.Sc5?
- threat
- 2.Rf6#
- 1...Rf8
- 2.exf8Q#
- 2.exf8R#
- 1...Qxd4!
- threat
- 1.Bh8?
- threat
- 2.Re5#
- 1...Qg4
- 2.Qe5#
- 1...Qd4
- 2.Sxd4#
- 1...Qe4
- 2.Rf6#
- 1...Qf4
- 2.Qg6#
- 1...Rxh8!
- threat
- 1.Qh4?
- threat
- 2.Sg3#
- 2.Rf6#
- 1...Qxd4
- 2.Sg3#
- 2.Sxd4#
- 1...Bxh2
- 2.Rf6#
- 1...cxd5
- 2.Rf6#
- 1...Rf8
- 2.Sg3#
- 2.exf8Q#
- 2.exf8R#
- 1...Rg8
- 2.Rf6#
- 1...Sf4
- 2.Sxe3#
- 2.Sg3#
- 1...Sxh4!
- threat
- 1.dxe3?
- threat
- 2.Qg6#
- 1...Sxe3
- 2.Sxe3#
- 1...Sf4
- 2.Qxf4#
- 1...Sh4
- 2.Qf4#
- 1...Rg8!
- threat
- 1.d3?
- threat
- 2.Rf6#
- 1...Qxd4
- 2.Sxd4#
- 1...Rf8
- 2.exf8Q#
- 2.exf8R#
- 1...Bxd3!
- threat
- 1.h3?
- threat
- 2.Qe5#
- 1...Qxd4
- 2.Sxd4#
- 1...Sf4
- 2.Sxe3#
- 1...Bh2!
- threat
- 1.e8Q?
- threat
- 2.Rf6#
- 2.Qxh5#
- 2.Qeg6#
- 2.Qf7#
- 1...Qxd4
- 2.Sxd4#
- 2.Qxh5#
- 2.Qeg6#
- 1...cxd5
- 2.Rf6#
- 2.Qeg6#
- 2.Qf7#
- 1...Qa7
- 2.Rf6#
- 2.Qxh5#
- 2.Qeg6#
- 1...Ra7
- 2.Rf6#
- 2.Qxh5#
- 2.Qeg6#
- 1...Sf4
- 2.Sxe3#
- 2.Rf6#
- 2.Qf7#
- 1...Sh4
- 2.Sxe3#
- 2.Rf6#
- 2.Qxh5#
- 2.Qf7#
- 1...h4
- 2.Rf6#
- 2.Qh5#
- 2.Qeg6#
- 2.Qf7#
- 1...Rxe8!
- threat
- 1.e8S?
- threat
- 2.Sd6#
- 2.Sg7#
- 2.Re5#
- 1...Qxd4
- 2.Sxd4#
- 2.Sd6#
- 1...cxd5
- 2.Sg7#
- 2.Re5#
- 1...Qb4
- 2.Sg7#
- 2.Re5#
- 1...Qa7
- 2.Sd6#
- 2.Re5#
- 1...Ra7
- 2.Sd6#
- 2.Re5#
- 1...Rd8
- 2.Sg7#
- 2.Re5#
- 1...Rxe8!
- threat
- 1.e8R?
- threat
- 2.Rf6#
- 1...Qxd4
- 2.Sxd4#
- 1...Rxe8!
- threat
- 1.Sc5?
- Keys
- 1.Bg7!
- threat
- 2.Re5#
- 1...Qg4
- 2.Qe5#
- 1...Qd4
- 2.Sxd4#
- 1...Qe4
- 2.Rf6#
- 1...Qf4
- 2.Qg6#
- threat
- 1.Bg7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 4
- Sets
- Q(g);XB(G)::S(E),XQ(g)
- R(k);OGATE::PXR(k)=Q
- B(a);SBLOCK::R1(I)
- S(d);N_GUARD::S(A),XP(f)
- Tries
- Try
- S(E);
- Threat
- R1(I)
- Vars
- R(k);OGATE::PXR(k)=Q
- Refutation
- Q(g);XB(G)
- Try
- B(G);
- Threat
- R1(I)
- Vars
- Q(g);SBLOCK::QAR1(F)
- Q(g);N_GUARD::S(E),XQ(g)
- Q(g);SBLOCK::R1(I)
- Q(g);SBLOCK::QAB1(F)
- Refutation
- R(k);XB(G)
- Try
- Q(F);
- Threat
- DUALS(2)
- Vars
- B(b);XP(D)::R1(I)
- P(j);XP(H)::R1(I)
- R(k);::R1(I)
- Refutation
- S(d);XQ(F)
- Try
- P(C);XP(f)
- Threat
- QAB1(F)
- Vars
- S(d);XP(C)::S(A),XS(d)
- S(d);N_GUARD::QAR1(F),XS(d)
- S(d);N_GUARD::QAR1(F)
- Refutation
- R(k);
- Try
- P(C);
- Threat
- R1(I)
- Vars
- Q(g);XB(G)::S(E),XQ(g)
- R(k);OGATE::PXR(k)=Q
- Refutation
- B(a);XP(C)
- Try
- P(D);
- Threat
- QAR1(F)
- Vars
- Q(g);XB(G)::S(E),XQ(g)
- S(d);N_GUARD::S(A),XP(f)
- Refutation
- B(b);
- Try
- P(J);
- Threat
- DUALS(4)
- Refutation
- R(k);XQ(J)
- Try
- P(J);
- Threat
- DUALS(3)
- Refutation
- R(k);XS(J)
- Try
- P(J);
- Threat
- R1(I)
- Vars
- Q(g);XB(G)::S(E),XQ(g)
- Refutation
- R(k);XR(J)
- Try
- Actual
- B(G);
- Threat
- R1(I)
- Vars
- Q(g);SBLOCK::QAR1(F)
- Q(g);N_GUARD::S(E),XQ(g)
- Q(g);SBLOCK::R1(I)
- Q(g);SBLOCK::QAB1(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).