MESON Chess Problem Database
Problem Display
PID: 87454 (B6b/rn1R3K/pprp4/2Nk1P2/1PNP4/P2Q4/3R4/3n4 w - - 0 1)
Buglos, Janos
The Problemist, 1991
#2
11 + 9
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Rxc5
- 2.Rxd6#
- 1...Rc8
- 2.Rxd6#
- 1...Bxd4
- 2.Qxd4#
- 1...Be5
- 2.dxe5#
- 1...Sb2
- 2.Se3#
- 1...Sf2
- 2.Se3#
- 1...Sc3
- 2.Se3#
- 1...Se3
- 2.Sxe3#
- 1...Sa5
- 2.Sxb6#
- 1...Sxc5
- 2.Sxb6#
- 1...Sd8
- 2.Sxb6#
- 1...Rxc5
- Tries
- 1.Sa5?
- threat
- 2.Qc4#
- 2.Qe4#
- 2.Qb3#
- 2.Qf3#
- 1...Rxc5
- 2.Qf3#
- 1...Bxd4
- 2.Qe4#
- 2.Qxd4#
- 1...Sxc5
- 2.Bxc6#
- 1...bxa5
- 2.Qb3#
- 1...bxc5
- 2.Qf3#
- 1...Sb2
- 2.Qe4#
- 2.Qf3#
- 1...Sf2
- 2.Qc4#
- 2.Qb3#
- 1...Sc3
- 2.Qc4#
- 1...Se3
- 2.Qe4#
- 1...b5
- 2.Qe4#
- 2.Qb3#
- 2.Qf3#
- 1...Sxa5!
- threat
- 1.Sxd6?
- threat
- 2.Qc4#
- 2.Qe4#
- 2.Qb3#
- 2.Qf3#
- 1...Rxc5
- 2.Qe4#
- 2.Qf3#
- 1...Bxd4
- 2.Qe4#
- 2.Qxd4#
- 1...Sxc5
- 2.Qc4#
- 1...Sxd6
- 2.Qb3#
- 1...bxc5
- 2.Qc4#
- 2.Qe4#
- 2.Qf3#
- 1...Rc7
- 2.Qe4#
- 2.Qf3#
- 1...Rc8
- 2.Qe4#
- 2.Qf3#
- 1...Sb2
- 2.Qe4#
- 2.Qf3#
- 1...Sf2
- 2.Qc4#
- 2.Qb3#
- 1...Sc3
- 2.Qc4#
- 1...Se3
- 2.Qe4#
- 1...Sa5
- 2.Qe4#
- 2.Qf3#
- 1...b5
- 2.Qe4#
- 2.Qb3#
- 2.Qf3#
- 1...Rxd6!
- threat
- 1.Se6?
- threat
- 2.Sf4#
- 1...Rxc4
- 2.Qf3#
- 1...Rc5
- 2.Rxd6#
- 1...Rc8
- 2.Rxd6#
- 1...Be5
- 2.dxe5#
- 1...Rc7!
- threat
- 1.Bxb7?
- threat
- 2.Sxb6#
- 2.Rxd6#
- 1...Bxd4
- 2.Rxd6#
- 2.Qxd4#
- 1...bxc5
- 2.Sb6#
- 2.Rxd6#
- 1...Be5
- 2.Sxb6#
- 2.dxe5#
- 1...b5
- 2.Sb6#
- 2.Rxd6#
- 1...Rxb7!
- threat
- 1.Rxd1?
- threat
- 2.Se3#
- 1...Rxc5
- 2.Rxd6#
- 1...Bxd4
- 2.Qxd4#
- 1...Rc8
- 2.Rxd6#
- 1...Rc7!
- threat
- 1.Rc2?
- threat
- 2.Qe4#
- 1...Rxc5
- 2.Rxd6#
- 1...Sxc5
- 2.Sxb6#
- 1...Sf2
- 2.Se3#
- 1...Sc3
- 2.Se3#
- 1...bxc5!
- threat
- 1.Qe2?
- threat
- 2.Qe6#
- 1...Rxc5
- 2.Rxd6#
- 1...Sxc5
- 2.Sxb6#
- 1...Rc8
- 2.Rxd6#
- 1...Be5
- 2.dxe5#
- 1...Se3
- 2.Sxe3#
- 1...Sd8
- 2.Sxb6#
- 1...Rc7!
- threat
- 1.Sa5?
- Keys
- 1.Se5!
- threat
- 2.Qc4#
- 2.Qe4#
- 2.Qb3#
- 2.Qf3#
- 1...Rxc5
- 2.Qf3#
- 1...Bxe5
- 2.Qb3#
- 1...Sxc5
- 2.Bxc6#
- 1...bxc5
- 2.Qf3#
- 1...Sb2
- 2.Qe4#
- 2.Qf3#
- 1...Sf2
- 2.Qc4#
- 2.Qb3#
- 1...Sc3
- 2.Qc4#
- 1...Se3
- 2.Qe4#
- 1...Sa5
- 2.Qe4#
- 2.Qf3#
- 1...b5
- 2.Qe4#
- 2.Qb3#
- 2.Qf3#
- threat
- 1.Se5!
This is a version of 7519
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 5
- ADDED MATES = 1
- REMOVED MATES = 6
- Sets
- R(e);N_GUARD,P_SPINS(h),XS(G)::R1(I),XP(f)
- R(e);N_GUARD,P_SPINS(h)::R1(I),XP(f)
- B(i);OGATE,P_SPINB(i),XP(F)::QAR1(C),XB(i)
- B(i);OGATE::QAR(C)+P(F),XB(i)
- S(a);N_GUARD::S(E)
- S(a);N_GUARD::S(E),XS(a)
- S(h);P_PINR(I),P_SPINR(e)::S(E),XP(d)
- S(h);P_PINR(I),P_SPINR(e),XS(G)::S(E),XP(d)
- Tries
- Try
- S(E);
- Threat
- DUALS(4)
- Vars
- R(e);P_SPINS(h),XS(G)::QAB(C)
- S(h);OGATE,P_PINR(I),P_SPINR(e),XS(G)::B(K),XR(e)
- P(d);XS(E)::QAB(C)
- P(d);XS(G)::QAB(C)
- S(a);::QAB1(C)
- Refutation
- S(h);P_PINR(I),P_SPINR(e),XS(E)
- Try
- S(E);XP(f)
- Threat
- DUALS(4)
- Vars
- S(h);P_PINR(I),P_SPINR(e),XS(G)::QAB1(C)
- S(h);P_PINR(I),P_SPINR(e),P_SPINS(h),XS(E)::QAB(C)
- S(a);::QAB1(C)
- Refutation
- R(e);P_SPINR(e),P_SPINS(h),XS(E)
- Try
- S(G);
- Threat
- S(G)
- Vars
- R(e);P_SPINS(h),SBLOCK,XS(E)::QAB(C)
- R(e);N_GUARD,P_SPINS(h)::R1(I),XP(f)
- B(i);OGATE::QAR(C)+P(F),XB(i)
- Refutation
- R(e);P_PINR(I),P_SPINS(h)
- Try
- B(K);P_PINR(e),XS(h)
- Threat
- DUALS(2)
- Refutation
- R(g);N_SPINR(e),P_PINR(I),XB(K)
- Try
- R(A);XS(a)
- Threat
- S(E)
- Vars
- R(e);N_GUARD,P_SPINS(h),XS(G)::R1(I),XP(f)
- B(i);OGATE,P_SPINB(i),XP(F)::QAR1(C),XB(i)
- R(e);N_GUARD,P_SPINS(h)::R1(I),XP(f)
- Refutation
- R(e);P_PINR(I),P_SPINS(h)
- Try
- R(A);
- Threat
- QAB1(C)
- Vars
- R(e);N_GUARD,P_SPINS(h),XS(G)::R1(I),XP(f)
- S(h);P_PINR(I),P_SPINR(e),XS(G)::S(E),XP(d)
- S(a);N_GUARD::S(E)
- Refutation
- P(d);XS(G)
- Try
- Q(C);
- Threat
- QAB1(C)
- Vars
- R(e);N_GUARD,P_SPINS(h),XS(G)::R1(I),XP(f)
- S(h);P_PINR(I),P_SPINR(e),XS(G)::S(E),XP(d)
- R(e);N_GUARD,P_SPINS(h)::R1(I),XP(f)
- B(i);OGATE::R(A)+P(F),XB(i)
- S(a);N_GUARD::S(E),XS(a)
- S(h);P_PINR(I),P_SPINR(e)::S(E),XP(d)
- Refutation
- R(e);P_PINR(I),P_SPINS(h)
- Try
- Actual
- S(E);
- Threat
- DUALS(4)
- Vars
- R(e);P_SPINS(h),XS(G)::QAB(C)
- B(i);XS(E)::QAB(C)
- S(h);OGATE,P_PINR(I),P_SPINR(e),XS(G)::B(K),XR(e)
- P(d);XS(G)::QAB(C)
- S(a);::QAB1(C)
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).