MESON Chess Problem Database
Problem Display
PID: 74357 (8/p5RK/k2p2P1/P1p4Q/P4N2/3pNr2/3B2B1/8 w - - 0 1)
Lincoln, Robert A
Problem Observer, 2007
#2
10 + 6
SOLUTION
- SOUND
- Sets
- 1...Rf1
- 2.Bb7#
- 1...Rf2
- 2.Bb7#
- 1...Rxe3
- 2.Bb7#
- 1...Rg3
- 2.Bb7#
- 1...Rh3
- 2.Bb7#
- 1...Rxf4
- 2.Bb7#
- 1...c4
- 2.Qb5#
- 1...Rf1
- Tries
- 1.Kh6?
- 1...Rxe3
- 2.Bb7#
- 1...Rxf4
- 2.Bb7#
- 1...Rf1
- 2.Bb7#
- 1...Rf2
- 2.Bb7#
- 1...Rg3
- 2.Bb7#
- 1...Rh3
- 2.Bb7#
- 1...c4
- 2.Qb5#
- 1...d5!
- 1...Rxe3
- 1.Kg8?
- 1...Rxe3
- 2.Bb7#
- 1...Rxf4
- 2.Bb7#
- 1...Rf1
- 2.Bb7#
- 1...Rf2
- 2.Bb7#
- 1...Rg3
- 2.Bb7#
- 1...Rh3
- 2.Bb7#
- 1...c4
- 2.Qb5#
- 1...d5!
- 1...Rxe3
- 1.Kh8?
- 1...Rxe3
- 2.Bb7#
- 1...Rxf4
- 2.Bb7#
- 1...Rf1
- 2.Bb7#
- 1...Rf2
- 2.Bb7#
- 1...Rg3
- 2.Bb7#
- 1...Rh3
- 2.Bb7#
- 1...c4
- 2.Qb5#
- 1...d5!
- 1...Rxe3
- 1.Sd1?
- 1...Rxf4
- 2.Bb7#
- 1...Rf1
- 2.Bb7#
- 1...Rf2
- 2.Bb7#
- 1...Re3
- 2.Bb7#
- 1...Rg3
- 2.Bb7#
- 1...Rh3
- 2.Bb7#
- 1...c4
- 2.Qb5#
- 1...d5!
- 1...Rxf4
- 1.Sf1?
- 1...Rxf1
- 2.Bb7#
- 1...Rxf4
- 2.Bb7#
- 1...Rf2
- 2.Bb7#
- 1...Re3
- 2.Bb7#
- 1...Rg3
- 2.Bb7#
- 1...Rh3
- 2.Bb7#
- 1...c4
- 2.Qb5#
- 1...d5!
- 1...Rxf1
- 1.Sc4?
- 1...Rxf4
- 2.Bb7#
- 1...Rf1
- 2.Bb7#
- 1...Rf2
- 2.Bb7#
- 1...Re3
- 2.Bb7#
- 1...Rg3
- 2.Bb7#
- 1...Rh3
- 2.Bb7#
- 1...d5!
- 1...Rxf4
- 1.Sg4?
- 1...Rxf4
- 2.Bb7#
- 1...Rf1
- 2.Bb7#
- 1...Rf2
- 2.Bb7#
- 1...Re3
- 2.Bb7#
- 1...Rg3
- 2.Bb7#
- 1...Rh3
- 2.Bb7#
- 1...c4
- 2.Qb5#
- 1...d5!
- 1...Rxf4
- 1.Sxd3?
- 1...Rxe3
- 2.Bb7#
- 1...d5
- 2.Sxc5#
- 1...Rf1
- 2.Bb7#
- 1...Rf2
- 2.Bb7#
- 1...Rg3
- 2.Bb7#
- 1...Rh3
- 2.Bb7#
- 1...Rf4
- 2.Bb7#
- 1...Rf5
- 2.Bb7#
- 1...Rf6
- 2.Bb7#
- 1...Rf8
- 2.Bb7#
- 1...c4
- 2.Sb4#
- 2.Qb5#
- 1...Rf7!
- 1...Rxe3
- 1.Sfd5?
- 1...Rxe3
- 2.Sc7#
- 1...Rf1
- 2.Sc7#
- 1...Rf2
- 2.Sc7#
- 1...Rg3
- 2.Sc7#
- 1...Rh3
- 2.Sc7#
- 1...Rf4
- 2.Sc7#
- 1...Rf5
- 2.Sc7#
- 1...Rf6
- 2.Sc7#
- 1...Rf8
- 2.Sc7#
- 1...c4
- 2.Sb4#
- 1...Rf7!
- 1...Rxe3
- 1.Se6?
- 1...Rxe3
- 2.Sc7#
- 2.Bb7#
- 1...d5
- 2.Sxc5#
- 1...Rf1
- 2.Sc7#
- 2.Bb7#
- 1...Rf2
- 2.Sc7#
- 2.Bb7#
- 1...Rg3
- 2.Sc7#
- 2.Bb7#
- 1...Rh3
- 2.Sc7#
- 2.Bb7#
- 1...Rf4
- 2.Sc7#
- 2.Bb7#
- 1...Rf5
- 2.Sc7#
- 2.Bb7#
- 1...Rf6
- 2.Sc7#
- 2.Bb7#
- 1...Rf8
- 2.Sc7#
- 2.Bb7#
- 1...c4
- 2.Qb5#
- 1...Rf7!
- 1...Rxe3
- 1.Bh1?
- 1...Rxe3
- 2.Bb7#
- 1...Rxf4
- 2.Bb7#
- 1...Rf1
- 2.Bb7#
- 1...Rf2
- 2.Bb7#
- 1...Rg3
- 2.Bb7#
- 1...Rh3
- 2.Bb7#
- 1...c4
- 2.Qb5#
- 1...d5!
- 1...Rxe3
- 1.Rc7?
- 1...Rxe3
- 2.Bb7#
- 1...Rxf4
- 2.Bb7#
- 1...Rf1
- 2.Bb7#
- 1...Rf2
- 2.Bb7#
- 1...Rg3
- 2.Bb7#
- 1...Rh3
- 2.Bb7#
- 1...c4
- 2.Qb5#
- 1...d5!
- 1...Rxe3
- 1.Rd7?
- 1...Rxe3
- 2.Bb7#
- 2.Rxd6#
- 1...Rxf4
- 2.Bb7#
- 2.Rxd6#
- 1...Rf1
- 2.Bb7#
- 2.Rxd6#
- 1...Rf2
- 2.Bb7#
- 2.Rxd6#
- 1...Rg3
- 2.Bb7#
- 2.Rxd6#
- 1...Rh3
- 2.Bb7#
- 2.Rxd6#
- 1...c4
- 2.Qb5#
- 1...d5!
- 1...Rxe3
- 1.Re7?
- 1...Rxe3
- 2.Bb7#
- 1...Rxf4
- 2.Bb7#
- 1...Rf1
- 2.Bb7#
- 1...Rf2
- 2.Bb7#
- 1...Rg3
- 2.Bb7#
- 1...Rh3
- 2.Bb7#
- 1...c4
- 2.Qb5#
- 1...d5!
- 1...Rxe3
- 1.Rf7?
- 1...Rxe3
- 2.Bb7#
- 1...Rxf4
- 2.Bb7#
- 1...Rf1
- 2.Bb7#
- 1...Rf2
- 2.Bb7#
- 1...Rg3
- 2.Bb7#
- 1...Rh3
- 2.Bb7#
- 1...c4
- 2.Qb5#
- 1...d5!
- 1...Rxe3
- 1.Qh4?
- 1...Rxe3
- 2.Bb7#
- 1...Rxf4
- 2.Bb7#
- 1...d5
- 2.Qf6#
- 1...Rf1
- 2.Bb7#
- 1...Rf2
- 2.Bb7#
- 1...Rg3
- 2.Bb7#
- 1...Rh3
- 2.Bb7#
- 1...c4!
- 1...Rxe3
- 1.Qd5?
- threat
- 2.Qc4#
- 2.Qc6#
- 2.Qb7#
- 2.Qxd6#
- 1...Rxf4
- 2.Qc6#
- 2.Qb7#
- 2.Qxd6#
- 1...c4
- 2.Qxc4#
- 2.Qc6#
- 2.Qb7#
- 2.Qb5#
- 2.Qxd6#
- 1...Rh3+!
- threat
- 1.Qg5?
- 1...Rxe3
- 2.Bb7#
- 1...Rxf4
- 2.Bb7#
- 1...d5
- 2.Qf6#
- 1...Rf1
- 2.Bb7#
- 1...Rf2
- 2.Bb7#
- 1...Rg3
- 2.Bb7#
- 1...c4
- 2.Qb5#
- 1...Rh3+!
- 1...Rxe3
- 1.Kh6?
- Keys
- 1.Sed5!
- 1...Rxf4
- 2.Sc7#
- 1...Rf1
- 2.Sc7#
- 1...Rf2
- 2.Sc7#
- 1...Re3
- 2.Sc7#
- 1...Rg3
- 2.Sc7#
- 1...Rh3
- 2.Sc7#
- 1...c4
- 2.Sb4#
- 1...Rxf4
- 1.Sed5!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 7
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- R(b);OGATE::B(B)
- R(b);OGATE,XS(C)::B(B)
- R(b);OGATE,P_PINQ(G)::B(B)
- R(b);OGATE,XS(E)::B(B)
- P(c);OGATE::QAB1(G)
- Tries
- Try
- K(J);P-FLIGHT
- Vars
- R(b);OGATE,XS(C)::B(B)
- R(b);OGATE,XS(E)::B(B)
- R(b);OGATE::B(B)
- R(b);OGATE,P_PINQ(G)::B(B)
- P(c);OGATE::QAB1(G)
- Refutation
- P(e);
- Try
- K(J);S_FLIGHT
- Vars
- R(b);OGATE,XS(C)::B(B)
- R(b);OGATE,XS(E)::B(B)
- R(b);OGATE::B(B)
- P(c);OGATE::QAB1(G)
- Refutation
- P(e);
- Try
- K(J);P-FLIGHT
- Vars
- R(b);OGATE,XS(C)::B(B)
- R(b);OGATE,XS(E)::B(B)
- R(b);OGATE::B(B)
- R(b);OGATE,P_PINQ(G)::B(B)
- P(c);OGATE::QAB1(G)
- Refutation
- P(e);
- Try
- S(C);
- Vars
- R(b);OGATE,XS(E)::B(B)
- R(b);OGATE::B(B)
- R(b);OGATE,P_PINQ(G)::B(B)
- P(c);OGATE::QAB1(G)
- Refutation
- P(e);
- Try
- S(C);
- Vars
- R(b);OGATE,XS(C)::B(B)
- R(b);OGATE,XS(E)::B(B)
- R(b);OGATE::B(B)
- R(b);OGATE,P_PINQ(G)::B(B)
- P(c);OGATE::QAB1(G)
- Refutation
- P(e);
- Try
- S(C);
- Vars
- R(b);OGATE,XS(E)::B(B)
- R(b);OGATE::B(B)
- R(b);OGATE,P_PINQ(G)::B(B)
- Refutation
- P(e);
- Try
- S(C);
- Vars
- R(b);OGATE,XS(E)::B(B)
- R(b);OGATE::B(B)
- R(b);OGATE,P_PINQ(G)::B(B)
- P(c);OGATE::QAB1(G)
- Refutation
- P(e);
- Try
- S(E);XP(a)
- Vars
- R(b);OGATE,XS(C)::B(B)
- P(e);N_GUARD::S(E),XP(c)
- R(b);OGATE::B(B)
- R(b);OGATE,P_PINQ(G)::B(B)
- Refutation
- R(b);P_PINR(I)
- Try
- S(E);
- Vars
- R(b);XS(C)::S(E)
- R(b);::S(E)
- R(b);P_PINQ(G)::S(E)
- P(c);N_GUARD::S(E)
- Refutation
- R(b);P_PINR(I)
- Try
- S(E);
- Vars
- P(e);N_GUARD::S(E),XP(c)
- P(c);OGATE::QAB1(G)
- Refutation
- R(b);P_PINR(I)
- Try
- B(B);
- Vars
- R(b);OGATE,XS(C)::B(B)
- R(b);OGATE,XS(E)::B(B)
- R(b);OGATE::B(B)
- R(b);OGATE,P_PINQ(G)::B(B)
- P(c);OGATE::QAB1(G)
- Refutation
- P(e);
- Try
- R(I);
- Vars
- R(b);OGATE,XS(C)::B(B)
- R(b);OGATE,XS(E)::B(B)
- R(b);OGATE::B(B)
- R(b);OGATE,P_PINQ(G)::B(B)
- P(c);OGATE::QAB1(G)
- Refutation
- P(e);
- Try
- R(I);
- Vars
- P(c);OGATE::QAB1(G)
- Refutation
- P(e);
- Try
- R(I);
- Vars
- R(b);OGATE,XS(C)::B(B)
- R(b);OGATE,XS(E)::B(B)
- R(b);OGATE::B(B)
- R(b);OGATE,P_PINQ(G)::B(B)
- P(c);OGATE::QAB1(G)
- Refutation
- P(e);
- Try
- R(I);
- Vars
- R(b);OGATE,XS(C)::B(B)
- R(b);OGATE,XS(E)::B(B)
- R(b);OGATE::B(B)
- R(b);OGATE,P_PINQ(G)::B(B)
- P(c);OGATE::QAB1(G)
- Refutation
- P(e);
- Try
- Q(G);
- Vars
- R(b);OGATE,XS(C)::B(B)
- R(b);OGATE,XS(E)::B(B)
- P(e);OGATEB::QAR(G)
- R(b);OGATE::B(B)
- R(b);OGATE,P_PINQ(G)::B(B)
- Refutation
- P(c);
- Try
- Q(G);
- Threat
- DUALS(4)
- Refutation
- R(b);CHECK
- Try
- Q(G);
- Vars
- R(b);OGATE,XS(C)::B(B)
- R(b);OGATE,XS(E)::B(B)
- P(e);OGATEB::QAR(G)
- R(b);OGATE::B(B)
- P(c);OGATE::QAB1(G)
- Refutation
- R(b);CHECK
- Try
- Actual
- S(C);
- Vars
- R(b);XS(E)::S(C)
- R(b);::S(C)
- R(b);P_PINQ(G)::S(C)
- P(c);N_GUARD::S(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).