MESON Chess Problem Database
Problem Display
PID: 175468 (3N2B1/B3p2N/Q1p4p/n2R4/2p1kPp1/1p4K1/1P4n1/5R2 w - - 0 1)
Harrop, N
San Francisco Chronicle, 1899
#2
10 + 9
| 6490 | yacpdb | 2018 |
SOLUTION
- SOUND
- Sets
- 1...Se1
- 2.Rxe1#
- 1...Sxf4
- 2.Rxf4#
- 1...Sh4
- 2.Re1#
- 1...Sb7
- 2.Qxc4#
- 1...c3
- 2.Re5#
- 2.Qd3#
- 1...cxd5
- 2.Qg6#
- 1...c5
- 2.Qe6#
- 1...h5
- 2.Sg5#
- 1...e6
- 2.Sf6#
- 1...Se1
- Tries
- 1.Rfd1?
- threat
- 2.Re5#
- 1...cxd5
- 2.Qe6#
- 2.Qg6#
- 1...e5
- 2.Rxe5#
- 1...Sxf4!
- threat
- 1.Re1+?
- 1...Se3
- 2.Rxe3#
- 1...Sxe1!
- 1...Se3
- 1.Rf3?
- threat
- 2.Re5#
- 1...Sxf4
- 2.Re3#
- 2.Rxf4#
- 1...cxd5
- 2.Qe6#
- 2.Qg6#
- 1...e5
- 2.Rxe5#
- 1...Se3
- 2.Rxe3#
- 1...c5
- 2.Qe6#
- 2.Qg6#
- 1...gxf3!
- threat
- 1.Qc8?
- threat
- 2.Qf5#
- 2.Qe6#
- 1...Sxf4
- 2.Rxf4#
- 2.Qf5#
- 1...c5
- 2.Qe6#
- 1...e6
- 2.Sf6#
- 2.Qxe6#
- 1...Se3
- 2.Rd4#
- 2.Qe6#
- 1...Sh4
- 2.Re1#
- 2.Qe6#
- 1...e5
- 2.Sf6#
- 1...cxd5!
- threat
- 1.Qb6?
- threat
- 2.Qd4#
- 1...cxd5
- 2.Qg6#
- 1...c5
- 2.Qe6#
- 1...e5!
- threat
- 1.Qxc6?
- threat
- 2.Qe6#
- 2.Qg6#
- 1...Sxf4
- 2.Rxf4#
- 1...e5
- 2.Qg6#
- 1...Se3
- 2.Qe6#
- 1...Sh4
- 2.Re1#
- 2.Qe6#
- 1...e6
- 2.Sf6#
- 2.Qxe6#
- 1...Sxc6!
- threat
- 1.f5?
- 1...c5
- 2.Qe6#
- 1...e6
- 2.Sf6#
- 1...Se3
- 2.Rf4#
- 1...Se1
- 2.Rxe1#
- 2.Rf4#
- 1...Sf4
- 2.Rxf4#
- 1...Sh4
- 2.Re1#
- 2.Rf4#
- 1...Sb7
- 2.Qxc4#
- 1...c3
- 2.Qd3#
- 1...h5
- 2.Sg5#
- 1...e5
- 2.Sf6#
- 1...cxd5!
- 1...c5
- 1.Rfd1?
- Keys
- 1.Sb7!
- 1...Sxf4
- 2.Rxf4#
- 1...Sxb7
- 2.Qxc4#
- 1...cxd5
- 2.Qg6#
- 1...c5
- 2.Qe6#
- 1...e5
- 2.Sd6#
- 1...e6
- 2.Sf6#
- 1...Se1
- 2.Rxe1#
- 1...Se3
- 2.Sc5#
- 1...Sh4
- 2.Re1#
- 1...c3
- 2.Re5#
- 2.Qd3#
- 1...h5
- 2.Sg5#
- 1...Sxf4
- 1.Sb7!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 0
- Sets
- S(a);N_GUARD::R(A),XS(a)
- S(a);OGATE,XP(D)::R1(A),XS(a)
- S(a);N_GUARD::R(A)
- S(f);N_GUARD::QAR2(F),XP(c)
- P(g);OGATE,XR(E)::QAB(F)
- P(g);OGATE::QAR2(F)
- P(h);N_GUARD::S(H)
- P(i);N_GUARD::S(H)
- Tries
- Try
- R(A);
- Threat
- R1(E)
- Vars
- P(i);::R1(E),XP(i)
- Refutation
- S(a);XP(D)
- Try
- R(A);CHECK
- Vars
- S(a);N_GUARD,P_SPINS(a)::R1(A),XS(a)
- Refutation
- S(a);XR(A)
- Try
- R(A);
- Threat
- R1(E)
- Vars
- P(i);::R1(E),XP(i)
- S(a);N_GUARD::R1(A),XS(a)
- Refutation
- P(e);XR(A)
- Try
- Q(F);
- Threat
- DUALS(2)
- Vars
- P(g);::QAR2(F)
- P(i);N_GUARD::S(H)
- Refutation
- P(g);XR(E)
- Try
- Q(F);
- Threat
- QAR1(F)
- Vars
- P(g);OGATE,XR(E)::QAB(F)
- P(g);OGATE::QAR2(F)
- Refutation
- P(i);
- Try
- Q(F);XP(g)
- Threat
- DUALS(2)
- Vars
- S(a);OGATE,XP(D)::R1(A),XS(a)
- P(i);::QAB(F)
- S(a);::QAR2(F)
- Refutation
- S(f);XQ(F)
- Try
- P(D);
- Vars
- P(g);OGATE::QAR2(F)
- P(i);N_GUARD::S(H)
- S(a);N_GUARD::R1(A)
- S(a);N_GUARD::R1(A),XS(a)
- S(f);N_GUARD::QAR2(F),XP(c)
- P(c);OGATE::QAB1(F)
- P(h);N_GUARD::S(H)
- Refutation
- P(g);XR(E)
- Try
- Actual
- S(I);
- Vars
- S(a);OGATE,XP(D)::R1(A),XS(a)
- S(f);N_GUARD,XS(I)::QAR2(F),XP(c)
- P(g);OGATE,XR(E)::QAB(F)
- P(g);OGATE::QAR2(F)
- P(i);N_GUARD::S(I)
- P(i);N_GUARD::S(H)
- S(a);N_GUARD::R(A),XS(a)
- S(a);SBLOCK::S(I)
- S(a);N_GUARD::R(A)
- P(h);N_GUARD::S(H)
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).