MESON Chess Problem Database
Problem Display
PID: 224187 (8/4Q3/1R1PP3/2Prn2R/2Pk4/4N1N1/4K3/4B3 w - - 0 1)
Labai, Zoltan
Variantim, 2005
#2
11 + 3
SOLUTION
- SOUND
- Sets
- 1...Rxd6
- 2.Qxd6#
- 1...Sd3
- 2.Rxd5#
- 1...Sf3
- 2.Rxd5#
- 1...Sxc4
- 2.Rxd5#
- 1...Sg4
- 2.Rxd5#
- 1...Sc6
- 2.Rxd5#
- 1...Sg6
- 2.Rxd5#
- 1...Sd7
- 2.Rxd5#
- 1...Sf7
- 2.Rxd5#
- 1...Rxd6
- Tries
- 1.Bb4?
- 1...Rxd6
- 2.Rxd6#
- 2.Qxd6#
- 1...Sxc4
- 2.Sc2#
- 2.Rxd5#
- 2.Qh4#
- 1...Sd3
- 2.Rxd5#
- 1...Sf3
- 2.Rxd5#
- 1...Sg4
- 2.Rxd5#
- 1...Sc6
- 2.Rxd5#
- 2.Qh4#
- 1...Sg6
- 2.Rxd5#
- 1...Sd7
- 2.Rxd5#
- 2.Qh4#
- 1...Sf7
- 2.Rxd5#
- 2.Qh4#
- 1...Rxc5!
- 1...Rxd6
- 1.Rf5?
- 1...Rxc5
- 2.Rf4#
- 1...Rxd6
- 2.Qxd6#
- 1...Sxc4
- 2.Rxd5#
- 1...Sd3
- 2.Rxd5#
- 1...Sf3
- 2.Rxd5#
- 1...Sg4
- 2.Rxd5#
- 1...Sc6
- 2.Rxd5#
- 1...Sg6
- 2.Rxd5#
- 1...Sd7
- 2.Rxd5#
- 1...Sf7
- 2.Rxd5#
- 1...Kxc5!
- 1...Rxc5
- 1.Rb3?
- 1...Rxc5
- 2.Bc3#
- 1...Rxd6
- 2.Qxd6#
- 1...Sxc4
- 2.Rxd5#
- 1...Sd3
- 2.Rxd5#
- 1...Sf3
- 2.Rxd5#
- 1...Sg4
- 2.Rxd5#
- 1...Sc6
- 2.Rxd5#
- 1...Sg6
- 2.Rxd5#
- 1...Sd7
- 2.Rxd5#
- 1...Sf7
- 2.Rxd5#
- 1...Kxc5!
- 1...Rxc5
- 1.Rb4?
- 1...Rxc5
- 2.Sc2#
- 2.Sef5#
- 1...Rxd6
- 2.Qxd6#
- 1...Sxc4
- 2.Rxc4#
- 2.Rxd5#
- 1...Sd3
- 2.Rxd5#
- 1...Sf3
- 2.Rxd5#
- 1...Sg4
- 2.Rxd5#
- 1...Sc6
- 2.Rxd5#
- 1...Sg6
- 2.Rxd5#
- 1...Sd7
- 2.Rxd5#
- 1...Sf7
- 2.Rxd5#
- 1...Kxc5!
- 1...Rxc5
- 1.Rb5?
- 1...Rxd6
- 2.Qxd6#
- 1...Sxc4
- 2.Sc2#
- 2.Rxd5#
- 2.Qh4#
- 1...Sd3
- 2.Rxd5#
- 1...Sf3
- 2.Rxd5#
- 1...Sg4
- 2.Rxd5#
- 1...Sc6
- 2.Rxd5#
- 2.Qh4#
- 1...Sg6
- 2.Rxd5#
- 1...Sd7
- 2.Rxd5#
- 2.Qh4#
- 1...Sf7
- 2.Rxd5#
- 2.Qh4#
- 1...Rxc5!
- 1...Rxd6
- 1.Ra6?
- 1...Kxc5
- 2.Qa7#
- 1...Rxd6
- 2.Qxd6#
- 1...Sxc4
- 2.Rxd5#
- 1...Sd3
- 2.Rxd5#
- 1...Sf3
- 2.Rxd5#
- 1...Sg4
- 2.Rxd5#
- 1...Sc6
- 2.Rxd5#
- 1...Sg6
- 2.Rxd5#
- 1...Sd7
- 2.Rxd5#
- 1...Sf7
- 2.Rxd5#
- 1...Rxc5!
- 1...Kxc5
- 1.Rc6?
- 1...Rxd6
- 2.Qxd6#
- 1...Sxc4
- 2.Sc2#
- 2.Rxd5#
- 2.Qh4#
- 1...Sxc6
- 2.Rxd5#
- 1...Sd3
- 2.Rxd5#
- 1...Sf3
- 2.Rxd5#
- 1...Sg4
- 2.Rxd5#
- 1...Sg6
- 2.Rxd5#
- 1...Sd7
- 2.Rxd5#
- 2.Qh4#
- 1...Sf7
- 2.Rxd5#
- 2.Qh4#
- 1...Rxc5!
- 1...Rxd6
- 1.Qh4+?
- 1...Sg4
- 2.Rxd5#
- 1...Kxc5!
- 1...Sg4
- 1.Qg5?
- 1...Rxc5
- 2.Qf4#
- 1...Rxd6
- 2.Qxe5#
- 1...Sxc4
- 2.Qxd5#
- 1...Sd3
- 2.Qxd5#
- 1...Sf3
- 2.Qxd5#
- 1...Sg4
- 2.Qxd5#
- 1...Sc6
- 2.Qxd5#
- 1...Sg6
- 2.Qxd5#
- 1...Sd7
- 2.Qxd5#
- 1...Sf7
- 2.Qxd5#
- 1...Kxc5!
- 1...Rxc5
- 1.Qf6?
- 1...Rxc5
- 2.Rh4#
- 2.Qf4#
- 1...Rxd6
- 2.Qxe5#
- 1...Kxc5!
- 1...Rxc5
- 1.Qf8?
- 1...Rxc5
- 2.Qf4#
- 1...Rxd6
- 2.Qxd6#
- 1...Sxc4
- 2.Rxd5#
- 1...Sd3
- 2.Rxd5#
- 1...Sf3
- 2.Rxd5#
- 1...Sg4
- 2.Rxd5#
- 1...Sc6
- 2.Rxd5#
- 1...Sg6
- 2.Rxd5#
- 1...Sd7
- 2.Rxd5#
- 1...Sf7
- 2.Rxd5#
- 1...Kxc5!
- 1...Rxc5
- 1.Qc7?
- 1...Rxd6
- 2.Rxd6#
- 2.Qxd6#
- 1...Sxc4
- 2.Sc2#
- 2.Rxd5#
- 1...Sc6
- 2.Rxd5#
- 1...Sd3
- 2.Rxd5#
- 1...Sf3
- 2.Rxd5#
- 1...Sg4
- 2.Rxd5#
- 1...Sg6
- 2.Rxd5#
- 1...Sd7
- 2.Rxd5#
- 1...Sf7
- 2.Rxd5#
- 1...Rxc5!
- 1...Rxd6
- 1.Qg7?
- 1...Rxc5
- 2.Rh4#
- 1...Rxd6
- 2.Qxe5#
- 1...Kxc5!
- 1...Rxc5
- 1.Bb4?
- Keys
- 1.Qa7!
- 1...Kxc5
- 2.Ra6#
- 1...Rxc5
- 2.Qa1#
- 1...Rxd6
- 2.Rxd6#
- 1...Sxc4
- 2.Rxd5#
- 1...Sd3
- 2.Rxd5#
- 1...Sf3
- 2.Rxd5#
- 1...Sg4
- 2.Rxd5#
- 1...Sc6
- 2.Rxd5#
- 1...Sg6
- 2.Rxd5#
- 1...Sd7
- 2.Rxd5#
- 1...Sf7
- 2.Rxd5#
- 1...Kxc5
- 1.Qa7!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 1
- ADDED MATES = 2
- REMOVED MATES = 0
- Sets
- R(b);OGATE,XP(I)::QAR2(K),XR(b)
- S(c);OGATE::R1(G),XR(b)
- S(c);OGATE,XP(E)::R1(G),XR(b)
- Tries
- Try
- B(A);
- Vars
- S(c);OGATE::R1(G),XR(b)
- Refutation
- R(b);XP(F)
- Try
- R(G);
- Vars
- R(b);SBLOCK,XP(F)::R(G)
- R(b);OGATE,XP(I)::QAR2(K),XR(b)
- S(c);OGATE,XP(E)::R1(G),XR(b)
- S(c);OGATE::R1(G),XR(b)
- Refutation
- K(a);S_FLIGHT,XP(F)
- Try
- R(H);
- Vars
- R(b);SBLOCK,XP(F)::B(A)
- R(b);OGATE,XP(I)::QAR2(K),XR(b)
- S(c);OGATE,XP(E)::R1(G),XR(b)
- S(c);OGATE::R1(G),XR(b)
- Refutation
- K(a);S_FLIGHT,XP(F)
- Try
- R(H);
- Vars
- R(b);OGATE,XP(I)::QAR2(K),XR(b)
- S(c);OGATE::R1(G),XR(b)
- Refutation
- K(a);S_FLIGHT,XP(F)
- Try
- R(H);
- Vars
- R(b);OGATE,XP(I)::QAR2(K),XR(b)
- S(c);OGATE::R1(G),XR(b)
- Refutation
- R(b);XP(F)
- Try
- R(H);
- Vars
- K(a);OGATEB,S_FLIGHT,XP(F)::QAB(K)
- R(b);OGATE,XP(I)::QAR2(K),XR(b)
- S(c);OGATE,XP(E)::R1(G),XR(b)
- S(c);OGATE::R1(G),XR(b)
- Refutation
- R(b);XP(F)
- Try
- R(H);
- Vars
- R(b);OGATE,XP(I)::QAR2(K),XR(b)
- S(c);OGATE,XR(H)::R1(G),XR(b)
- S(c);OGATE::R1(G),XR(b)
- Refutation
- R(b);XP(F)
- Try
- Q(K);CHECK
- Vars
- S(c);OGATE,P_SPINS(c)::R1(G),XR(b)
- Refutation
- K(a);S_FLIGHT,XP(F)
- Try
- Q(K);
- Vars
- R(b);SBLOCK,XP(F)::QAR2(K)
- R(b);N_GUARD,XP(I)::QAB1(K),XS(c)
- S(c);OGATE,XP(E)::QAR1(K),XR(b)
- S(c);OGATE::QAR1(K),XR(b)
- Refutation
- K(a);S_FLIGHT,XP(F)
- Try
- Q(K);P_PINS(c)
- Vars
- R(b);N_GUARD,XP(I)::QAB1(K),XS(c)
- Refutation
- K(a);N_SPINS(c),S_FLIGHT,XP(F)
- Try
- Q(K);
- Vars
- R(b);SBLOCK,XP(F)::QAR2(K)
- R(b);OGATE,XP(I)::QAR2(K),XR(b)
- S(c);OGATE,XP(E)::R1(G),XR(b)
- S(c);OGATE::R1(G),XR(b)
- Refutation
- K(a);S_FLIGHT,XP(F)
- Try
- Q(K);
- Vars
- S(c);OGATE::R1(G),XR(b)
- Refutation
- R(b);XP(F)
- Try
- Q(K);P_PINS(c)
- Vars
- R(b);SBLOCK,XP(F)::R(G)
- R(b);N_GUARD,XP(I)::QAB1(K),XS(c)
- Refutation
- K(a);N_SPINS(c),S_FLIGHT,XP(F)
- Try
- Actual
- Q(K);
- Vars
- K(a);OGATEB,S_FLIGHT,XP(F)::QAB(K)+R(H)
- R(b);SBLOCK,XP(F)::QAB(K)
- R(b);OGATE,XP(I)::R(H),XR(b)
- S(c);OGATE,XP(E)::R1(G),XR(b)
- S(c);OGATE::R1(G),XR(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).