MESON Chess Problem Database
Problem Display
PID: 80670 (1b4B1/1p1r3P/8/2R5/3Pk3/Q1B1PR1K/Np2PpN1/3n4 w - - 0 1)
Lincoln, Robert A
2nd Prize, StrateGems-10 JT, 2008
#2
12 + 7
| 145 | StrateGems | 2008 |
| 136 | Problem Observer | 2010 |
SOLUTION
- SOUND
- Sets
- 1...Rd5
- 2.Bxd5#
- 1...Rd6
- 2.Rf4#
- 2.Re5#
- 1...Rc7
- 2.Bd5#
- 2.Rf4#
- 2.Re5#
- 1...Re7
- 2.Bd5#
- 1...Rg7
- 2.Bd5#
- 1...Rxh7+
- 2.Bxh7#
- 1...Bf4
- 2.Rxf4#
- 1...Be5
- 2.Rxe5#
- 1...Bd6
- 2.Bd5#
- 1...Ba7
- 2.Rf4#
- 2.Re5#
- 1...Sxc3
- 2.Sxc3#
- 1...Sxe3
- 2.Rxe3#
- 1...Rd5
- Tries
- 1.Bxb2?
- threat
- 2.Qd3#
- 1...Rxh7+
- 2.Bxh7#
- 1...Sxb2
- 2.Sc3#
- 1...Sc3
- 2.Sxc3#
- 1...Rxd4!
- threat
- 1.Be6?
- threat
- 2.Bf5#
- 1...Sxe3
- 2.Rxe3#
- 1...Rd5
- 2.Bxd5#
- 1...Rf7
- 2.Bd5#
- 1...Rxh7+!
- threat
- 1.Bf7?
- threat
- 2.Bg6#
- 1...Sxe3
- 2.Rxe3#
- 1...Rd5
- 2.Bxd5#
- 1...Rd6
- 2.Rf4#
- 2.Re5#
- 1...Rxf7!
- threat
- 1.Qb3?
- threat
- 2.Qc2#
- 1...Rxh7+
- 2.Bxh7#
- 1...Sxe3
- 2.Rxe3#
- 1...b1Q
- 2.Qxb1#
- 1...b1B
- 2.Qxb1#
- 1...Rxd4!
- threat
- 1.Qa4?
- threat
- 2.Qc2#
- 2.d5#
- 1...Rxh7+
- 2.Bxh7#
- 1...Rxd4
- 2.Qxd4#
- 1...Sxc3
- 2.Sxc3#
- 2.Qc2#
- 1...Sxe3
- 2.Rxe3#
- 1...b1B
- 2.d5#
- 1...b1R
- 2.Qc2#
- 1...Rd5
- 2.Bxd5#
- 2.Qc2#
- 1...Bf4
- 2.Rxf4#
- 2.Qc2#
- 1...Be5
- 2.Rxe5#
- 2.Qc2#
- 1...b5
- 2.Qc2#
- 1...b1Q!
- threat
- 1.Qa6?
- threat
- 2.Qd3#
- 2.Qg6#
- 1...Rxh7+
- 2.Bxh7#
- 1...Rxd4
- 2.Qg6#
- 1...Sxe3
- 2.Rxe3#
- 2.Qd3#
- 1...b1Q
- 2.Qg6#
- 1...b1B
- 2.Qg6#
- 1...Rd5
- 2.Bxd5#
- 2.Qd3#
- 1...Rd6
- 2.Rf4#
- 2.Re5#
- 2.Qd3#
- 1...Rf7
- 2.Qd3#
- 1...Rg7
- 2.Bd5#
- 2.Qd3#
- 1...Bd6
- 2.Bd5#
- 2.Qd3#
- 1...b5
- 2.Qg6#
- 1...b6
- 2.Qd3#
- 1...bxa6!
- threat
- 1.Bxb2?
- Keys
- 1.Qb4!
- threat
- 2.d5#
- 1...Rxh7+
- 2.Bxh7#
- 1...Rxd4
- 2.Qxd4#
- 1...Sxc3
- 2.Sxc3#
- 1...Sxe3
- 2.Rxe3#
- 1...b1Q
- 2.Qxb1#
- 1...b1R
- 2.Qxb1#
- 1...Rd5
- 2.Bxd5#
- 1...Bf4
- 2.Rxf4#
- 1...Be5
- 2.Rxe5#
- threat
- 1.Qb4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 3
- Sets
- R(f);N_GUARD::B(L),XR(f)
- R(f);N_GUARD::B(L)
- R(f);CHECK,OGATE,XP(K)::B(L),XR(f)
- B(g);N_GUARD::R1(G),XB(g)
- B(g);N_GUARD::R1(J),XB(g)
- B(g);S_CUTR(f)::B(L)
- S(a);XB(E)::S(A),XS(a)
- S(a);OGATE,XP(F)::R1(G),XS(a)
- Tries
- Try
- B(E);XP(b)
- Threat
- QAB1(D)
- Vars
- R(f);CHECK,OGATE,XP(K)::B(L),XR(f)
- S(a);N_GUARD,XB(E)::S(A)
- S(a);N_GUARD::S(A),XS(a)
- Refutation
- R(f);XP(I)
- Try
- B(L);
- Threat
- B(L)
- Vars
- S(a);OGATE,XP(F)::R1(G),XS(a)
- R(f);N_GUARD::B(L),XR(f)
- R(f);N_GUARD::B(L)
- Refutation
- R(f);CHECK,XP(K)
- Try
- B(L);
- Threat
- B(L)
- Vars
- S(a);OGATE,XP(F)::R1(G),XS(a)
- R(f);N_GUARD::B(L),XR(f)
- Refutation
- R(f);XB(L)
- Try
- Q(D);
- Threat
- QAB(D)
- Vars
- R(f);CHECK,OGATE,XP(K)::B(L),XR(f)
- S(a);OGATE,XP(F)::R1(G),XS(a)
- P(b);OGATE::QAB(D),XQ(b)
- P(b);OGATE::QAB(D),XB(b)
- Refutation
- R(f);XP(I)
- Try
- Q(D);
- Threat
- DUALS(2)
- Vars
- R(f);CHECK,OGATE,XP(K)::B(L),XR(f)
- R(f);OGATE,P_SPINR(f),XP(I)::QAR1(D),XR(f)
- S(a);OGATE,XP(F)::R1(G),XS(a)
- P(b);::QAR(D)+P(I)
- P(b);::QAB(D)
- P(e);::QAB(D)
- Refutation
- P(b);
- Try
- Q(D);
- Threat
- DUALS(2)
- Vars
- R(f);CHECK,OGATE,XP(K)::B(L),XR(f)
- R(f);XP(I)::QAB(D)
- P(b);::QAB(D)
- R(f);::QAB1(D)
- P(e);::QAB(D)
- P(e);::QAB1(D)
- Refutation
- P(e);XQ(D)
- Try
- Actual
- Q(D);
- Threat
- QAR(D)+P(I)
- Vars
- R(f);CHECK,OGATE,XP(K)::B(L),XR(f)
- R(f);OGATE,P_SPINR(f),XP(I)::QAR1(D),XR(f)
- S(a);XB(E)::S(A),XS(a)
- S(a);OGATE,XP(F)::R1(G),XS(a)
- P(b);OGATE::QAB(D),XQ(b)
- P(b);OGATE::QAB(D),XR(b)
- R(f);N_GUARD::B(L),XR(f)
- B(g);N_GUARD::R1(G),XB(g)
- B(g);N_GUARD::R1(J),XB(g)
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).