MESON Chess Problem Database
Problem Display
PID: 96515 (7b/3p4/K2R2nr/3N4/2n1kpQ1/4pp1r/2P1N3/BB3b2 w - - 0 1)
Lincoln, Robert A
US Problem Bulletin, 1988
#2
8 + 11
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Rh1
- 2.Sg3#
- 1...Rh2
- 2.Sg3#
- 1...Rg3
- 2.Sxg3#
- 1...R3h4
- 2.Sg3#
- 1...R3h5
- 2.Sg3#
- 1...R6h4
- 2.Qxg6#
- 1...Rh7
- 2.Qxg6#
- 1...Be5
- 2.c3#
- 1...Bf6
- 2.Sxf6#
- 1...Sa5
- 2.c4#
- 1...Sce5
- 2.Sc3#
- 1...Sb6
- 2.c4#
- 1...Sxd6
- 2.c4#
- 1...Sh4
- 2.Qxf4#
- 1...Sge5
- 2.Sdc3#
- 2.Qxf4#
- 1...Se7
- 2.Qxf4#
- 1...Sf8
- 2.Qxf4#
- 1...Rh1
- Tries
- 1.Bd4?
- threat
- 2.Sdc3#
- 2.c3#
- 1...Bxe2
- 2.Sc3#
- 1...Sxd6
- 2.Sc3#
- 2.c4#
- 1...Sb2
- 2.Sc3#
- 1...Sd2
- 2.Sc3#
- 1...Sa3
- 2.Sc3#
- 1...Sce5
- 2.Sc3#
- 1...Sge5
- 2.Sdc3#
- 2.Qxf4#
- 1...Bxd4!
- threat
- 1.Bf6?
- threat
- 2.Sec3#
- 2.Sdc3#
- 2.c3#
- 1...Bxe2
- 2.Sc3#
- 1...Sxd6
- 2.Sc3#
- 2.c4#
- 1...fxe2
- 2.Sc3#
- 2.c3#
- 1...Sb2
- 2.Sc3#
- 1...Sd2
- 2.Sc3#
- 1...Sa3
- 2.Sc3#
- 1...Sa5
- 2.Sc3#
- 2.c3#
- 2.c4#
- 1...Sce5
- 2.Sc3#
- 1...Sb6
- 2.Sc3#
- 2.c3#
- 2.c4#
- 1...Sge5
- 2.Sdc3#
- 2.Qxf4#
- 1...Bxf6!
- threat
- 1.Bg7?
- threat
- 2.Sec3#
- 2.Sdc3#
- 2.c3#
- 1...Bxe2
- 2.Sc3#
- 1...Sxd6
- 2.Sc3#
- 2.c4#
- 1...fxe2
- 2.Sc3#
- 2.c3#
- 1...Sb2
- 2.Sc3#
- 1...Sd2
- 2.Sc3#
- 1...Sa3
- 2.Sc3#
- 1...Sa5
- 2.Sc3#
- 2.c3#
- 2.c4#
- 1...Sce5
- 2.Sc3#
- 2.Sf6#
- 1...Sb6
- 2.Sc3#
- 2.c3#
- 2.c4#
- 1...Sge5
- 2.Sdc3#
- 2.Qxf4#
- 1...Bxg7!
- threat
- 1.Bxh8?
- threat
- 2.Sec3#
- 2.Sdc3#
- 2.c3#
- 1...Bxe2
- 2.Sc3#
- 1...Sxd6
- 2.Sc3#
- 2.c4#
- 1...Sxh8
- 2.Qxf4#
- 1...fxe2
- 2.Sc3#
- 2.c3#
- 1...Sb2
- 2.Sc3#
- 1...Sd2
- 2.Sc3#
- 1...Sa3
- 2.Sc3#
- 1...Sa5
- 2.Sc3#
- 2.c3#
- 2.c4#
- 1...Sce5
- 2.Sc3#
- 2.Sf6#
- 1...Sb6
- 2.Sc3#
- 2.c3#
- 2.c4#
- 1...Sge5
- 2.Sdc3#
- 2.Qxf4#
- 1...Rxh8!
- threat
- 1.Qe6+?
- 1...Be5
- 2.Sdc3#
- 2.Sf6#
- 2.c3#
- 1...Sce5
- 2.Sc3#
- 2.c3#
- 2.c4#
- 1...Sge5
- 2.Sdc3#
- 2.c3#
- 1...dxe6!
- 1...Be5
- 1.Bd4?
- Keys
- 1.Sdxf4!
- threat
- 2.Sxg6#
- 1...Sxd6
- 2.c4#
- 1...Sxf4
- 2.Qxf4#
- 1...Rg3
- 2.Sxg3#
- 1...R3h4
- 2.Sg3#
- 1...R6h4
- 2.Qxg6#
- 1...Be5
- 2.c3#
- 1...Sce5
- 2.Rd4#
- 1...Sh4
- 2.Sg2#
- 2.Sd3#
- 2.Sxh3#
- 2.Sd5#
- 2.Sh5#
- 2.Se6#
- 2.Sg6#
- 1...Sge5
- 2.Sc3#
- 1...Se7
- 2.Sg2#
- 2.Sd3#
- 2.Sxh3#
- 2.Sd5#
- 2.Sh5#
- 2.Se6#
- 2.Sg6#
- 1...Sf8
- 2.Sg2#
- 2.Sd3#
- 2.Sxh3#
- 2.Sd5#
- 2.Sh5#
- 2.Se6#
- 2.Sg6#
- threat
- 1.Sdxf4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 2
- REMOVED MATES = 10
- Sets
- R(d);N_GUARD::S(D)
- R(d);N_GUARD::S(D),XR(d)
- R(i);N_GUARD::QAB(E),XS(h)
- B(k);SBLOCK::B(B)+P(C)
- B(k);N_GUARD::S(F),XB(k)
- S(e);OGATE,P_PINS(D)::B(B)+P(C)
- S(e);P_PINS(D),SBLOCK,S_CUTB(k)::S(F)
- S(e);OGATE,P_PINS(D),XR(H)::B(B)+P(C)
- S(h);N_GUARD,P_PINR(H)::QAR1(E),XP(g)
- Tries
- Try
- B(A);
- Threat
- DUALS(2)
- Vars
- B(a);XS(D)::S(F)
- S(e);P_PINS(D)::S(F)
- Refutation
- B(k);XB(A)
- Try
- B(A);
- Threat
- DUALS(3)
- Vars
- B(a);XS(D)::S(F)
- S(e);P_PINS(D)::S(F)
- Refutation
- B(k);XB(A)
- Try
- B(A);
- Threat
- DUALS(3)
- Vars
- B(a);XS(D)::S(F)
- S(e);P_PINS(D)::S(F)
- Refutation
- B(k);XB(A)
- Try
- B(A);XB(k)
- Threat
- DUALS(3)
- Vars
- B(a);XS(D)::S(F)
- S(h);N_GUARD,P_PINR(H),XB(A)::QAR1(E),XP(g)
- S(e);P_PINS(D)::S(F)
- Refutation
- R(i);XB(A)
- Try
- Q(E);CHECK,N_PINP(g)
- Refutation
- P(j);XQ(E)
- Try
- Actual
- S(F);XP(g)
- Threat
- QAR(E)+S(F),XS(h)
- Vars
- S(e);OGATE,P_PINS(D),XR(H)::B(B)+P(C)
- S(h);OGATE,P_PINR(H),P_SPINS(h),XS(F)::QAR1(E),XS(h)
- R(d);N_GUARD::S(D),XR(d)
- R(d);N_GUARD::S(D)
- R(i);N_GUARD::QAB(E),XS(h)
- B(k);SBLOCK::B(B)+P(C)
- S(e);P_PINS(D),SBLOCK,S_CUTB(k)::R1(H)
- S(h);P_PINR(H),SBLOCK,S_CUTB(k)::S(D)
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).