MESON Chess Problem Database
Problem Display
PID: 888 (8/7r/8/4nR2/4Kp1k/5B2/4N1QN/2b4r w - - 0 1)
Bakcsi, Gyorgy
British Chess Magazine, 1994
#2
6 + 6
SOLUTION
- SOUND
- Sets
- 1...Rxh2
- 2.Qxh2#
- 1...Rh5
- 2.Rxh5#
- 1...Ra7
- 2.Rh5#
- 1...Rb7
- 2.Rh5#
- 1...Rc7
- 2.Rh5#
- 1...Rd7
- 2.Rh5#
- 1...Re7
- 2.Rh5#
- 1...Rf7
- 2.Rh5#
- 1...Rg7
- 2.Rh5#
- 1...Sd3
- 2.Qg4#
- 1...Sxf3
- 2.Sxf3#
- 2.Qg4#
- 1...Sc4
- 2.Qg4#
- 1...Sg4
- 2.Qxg4#
- 1...Sc6
- 2.Qg4#
- 1...Sg6
- 2.Qg4#
- 1...Sd7
- 2.Qg4#
- 1...Sf7
- 2.Qg4#
- 1...Rxh2
- Tries
- 1.Sg1?
- threat
- 2.Qh3#
- 2.Qf2#
- 2.Qg5#
- 1...Rxh2
- 2.Qxh2#
- 2.Qg5#
- 1...Sxf3
- 2.Sgxf3#
- 2.Shxf3#
- 2.Qh3#
- 2.Qf2#
- 2.Qg4#
- 1...Rh5
- 2.Rxh5#
- 2.Qh3#
- 2.Qf2#
- 1...Rg7
- 2.Rh5#
- 2.Qh3#
- 1...Be3
- 2.Qh3#
- 2.Qg5#
- 1...Sd3
- 2.Qh3#
- 2.Qg4#
- 2.Qg5#
- 1...Sg4
- 2.Qh3#
- 2.Qxg4#
- 1...Sf7
- 2.Qh3#
- 2.Qf2#
- 2.Qg4#
- 1...Rxg1!
- threat
- 1.Sf1?
- threat
- 2.Qxh1#
- 1...Rxf1
- 2.Qh2#
- 1...Rg1
- 2.Qh2#
- 1...Rh2
- 2.Qxh2#
- 1...Rh3
- 2.Qg5#
- 1...Sg4
- 2.Qxg4#
- 1...Sxf3!
- threat
- 1.Bg4?
- threat
- 2.Qh3#
- 2.Qf2#
- 1...Sxg4
- 2.Sf3#
- 2.Qxg4#
- 1...Rf1
- 2.Qh3#
- 1...Rg1
- 2.Qh3#
- 1...Be3
- 2.Qh3#
- 1...Sd3
- 2.Sf3#
- 2.Qh3#
- 1...Rxh2!
- threat
- 1.Rxf4+?
- 1...Sg4
- 2.Qxg4#
- 1...Bxf4!
- 1...Sg4
- 1.Rxe5?
- threat
- 2.Qg4#
- 1...Rg7
- 2.Rh5#
- 1...Rg1!
- threat
- 1.Qxh1?
- threat
- 2.Sf1#
- 2.Sg4#
- 1...Kh3
- 2.Sf1#
- 2.Sg4#
- 1...Sg4
- 2.Sxg4#
- 1...Sxf3!
- threat
- 1.Qg8?
- threat
- 2.Qxh7#
- 1...Kh3
- 2.Qxh7#
- 1...Rh5
- 2.Rxh5#
- 1...Ra7
- 2.Rh5#
- 1...Rb7
- 2.Rh5#
- 1...Rc7
- 2.Rh5#
- 1...Rd7
- 2.Rh5#
- 1...Re7
- 2.Rh5#
- 1...Rf7
- 2.Rh5#
- 1...Rg7
- 2.Rh5#
- 1...Rh8
- 2.Qxh8#
- 1...Sg4
- 2.Qxg4#
- 1...Sf7
- 2.Qg4#
- 1...Rh6!
- threat
- 1.Sg1?
- Keys
- 1.Qg7!
- threat
- 2.Qxh7#
- 1...Kh3
- 2.Qxh7#
- 1...Rxg7
- 2.Rh5#
- 1...Rh5
- 2.Rxh5#
- 1...Rh6
- 2.Qxh6#
- 1...Rh8
- 2.Qxh8#
- 1...Sg4
- 2.Qxg4#
- 1...Sf7
- 2.Qg4#
- threat
- 1.Qg7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 12
- Sets
- R(b);OGATE,XS(C)::QAR2(B),XR(b)
- R(f);N_GUARD::R1(F),XR(f)
- R(f);N_GUARD::R1(F)
- S(e);N_GUARD::QAR1(B)
- S(e);N_GUARD::QAR1(B),XS(e)
- Tries
- Try
- S(A);
- Threat
- DUALS(3)
- Refutation
- R(b);XS(A)
- Try
- S(C);
- Threat
- QAR(B),XR(b)
- Vars
- R(b);N_GUARD,XS(C)::QAR2(B)
- R(b);N_GUARD::QAR2(B)
- R(b);N_GUARD::QAR2(B),XR(b)
- R(b);SBLOCK::QAB1(B)
- S(e);N_GUARD::QAR1(B),XS(e)
- Refutation
- S(e);XB(D)
- Try
- B(D);
- Threat
- DUALS(2)
- Vars
- R(b);::QAR1(B)
- B(a);::QAR1(B)
- Refutation
- R(b);XS(C)
- Try
- R(F);CHECK,XP(c)
- Vars
- S(e);N_GUARD,P_SPINS(e)::QAR1(B),XS(e)
- Refutation
- B(a);XR(F)
- Try
- R(F);XS(e)
- Threat
- QAR1(B)
- Vars
- R(f);N_GUARD::R1(F)
- Refutation
- R(b);
- Try
- Q(B);XR(b)
- Threat
- DUALS(2)
- Vars
- S(e);::QAR(B)+S(C),XS(e)
- Refutation
- S(e);XB(D)
- Try
- Q(B);
- Threat
- QAR(B),XR(f)
- Vars
- K(d);P-FLIGHT::QAR(B),XR(f)
- R(f);N_GUARD::R1(F),XR(f)
- R(f);N_GUARD::R1(F)
- R(f);OGATEB::QAR(B),XR(f)
- S(e);N_GUARD::QAR1(B),XS(e)
- S(e);N_GUARD::QAR1(B)
- Refutation
- R(f);
- Try
- Actual
- Q(B);
- Threat
- QAR(B),XR(f)
- Vars
- K(d);P-FLIGHT::QAR(B),XR(f)
- R(f);N_GUARD,XQ(B)::R1(F)
- R(f);N_GUARD::R1(F),XR(f)
- R(f);N_GUARD::QAR2(B),XR(f)
- R(f);OGATEB::QAR(B),XR(f)
- S(e);N_GUARD::QAR1(B),XS(e)
- S(e);N_GUARD::QAR1(B)
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).