MESON Chess Problem Database
Problem Display
PID: 101073 (2KR1NN1/4p3/1p6/4k2r/6R1/8/2QnnPP1/8 w - - 0 1)
MacBride, Robert C
Good Companions, 1919
#2
8 + 6
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Rf5
- 2.Qc7#
- 1...Sb1
- 2.Qe4#
- 1...Sf1
- 2.Qe4#
- 1...Sb3
- 2.Qe4#
- 1...Sf3
- 2.Qe4#
- 1...Sc4
- 2.Qe4#
- 1...Se4
- 2.Qxe4#
- 1...Sc1
- 2.f4#
- 1...Sg1
- 2.f4#
- 1...Sc3
- 2.f4#
- 1...Sg3
- 2.f4#
- 1...Sd4
- 2.f4#
- 1...b5
- 2.Qc5#
- 1...e6
- 2.Sg6#
- 1...Rf5
- Tries
- 1.Rg5+?
- 1...Kf4
- 2.Se6#
- 2.Qf5#
- 1...Rxg5!
- 1...Kf4
- 1.Qd3?
- threat
- 2.Rd5#
- 2.Qb5#
- 2.Qd5#
- 1...Se4
- 2.Rd5#
- 2.Qxe4#
- 2.Qd5#
- 1...Sb3
- 2.Rd5#
- 2.Qe4#
- 2.Qd5#
- 1...Sc4
- 2.Rd5#
- 2.Qe4#
- 2.Qd5#
- 1...Sc3
- 2.f4#
- 1...Sd4
- 2.f4#
- 1...b5
- 2.Rd5#
- 2.Qxb5#
- 2.Qd5#
- 1...e6
- 2.Sg6#
- 2.Sd7#
- 2.Qb5#
- 1...Sf4!
- threat
- 1.Qg6?
- threat
- 2.Qxh5#
- 2.Qe6#
- 1...Rh1
- 2.Qg5#
- 2.Qe6#
- 1...Rh2
- 2.Qg5#
- 2.Qe6#
- 1...Rh3
- 2.Qg5#
- 2.Qe6#
- 1...Rh4
- 2.Qg5#
- 2.Qe6#
- 1...Rf5
- 2.Qe6#
- 1...Rg5
- 2.Qxg5#
- 2.Qe6#
- 1...Rh6
- 2.Qg5#
- 1...Rh7
- 2.Qg5#
- 2.Qe6#
- 1...Rh8
- 2.Qg5#
- 2.Qe6#
- 1...Sf3
- 2.Re4#
- 2.Qe4#
- 2.Qe6#
- 1...Se4
- 2.Rxe4#
- 2.Qxe4#
- 2.Qe6#
- 1...Sg3
- 2.Qe6#
- 2.f4#
- 1...Sd4
- 2.f4#
- 1...e6
- 2.Qxh5#
- 2.Qxe6#
- 2.Qf6#
- 1...Sf4!
- threat
- 1.Qc4?
- threat
- 2.Rd5#
- 2.Qb5#
- 2.Qd5#
- 2.Qe6#
- 1...Kf5
- 2.Qe6#
- 1...Rh6
- 2.Rg5#
- 2.Rd5#
- 2.Qb5#
- 2.Qd5#
- 1...Sb3
- 2.Rd5#
- 2.Qd5#
- 2.Qe6#
- 2.Qe4#
- 1...Se4
- 2.Rd5#
- 2.Qd5#
- 2.Qe6#
- 2.Qxe4#
- 1...Sc3
- 2.Qe6#
- 2.Qf4#
- 1...Sd4
- 2.Rd5#
- 2.Qd5#
- 1...Sf4
- 2.Qxf4#
- 1...b5
- 2.Rd5#
- 2.Qxb5#
- 2.Qd5#
- 2.Qe6#
- 2.Qc5#
- 1...e6
- 2.Qb5#
- 2.Qxe6#
- 1...Sxc4!
- threat
- 1.Qc6?
- threat
- 2.Rd5#
- 2.Qb5#
- 2.Qd5#
- 2.Qe6#
- 1...Kf5
- 2.Qe6#
- 1...Rh6
- 2.Rd5#
- 2.Qb5#
- 2.Qd5#
- 1...Sb3
- 2.Rd5#
- 2.Qe4#
- 2.Qd5#
- 2.Qe6#
- 1...Se4
- 2.Rd5#
- 2.Qxe4#
- 2.Qd5#
- 2.Qe6#
- 1...Sc3
- 2.Qe6#
- 1...Sd4
- 2.Rd5#
- 2.Qd5#
- 1...b5
- 2.Rd5#
- 2.Qxb5#
- 2.Qd5#
- 2.Qc5#
- 2.Qe6#
- 1...e6
- 2.Qb5#
- 2.Qxe6#
- 1...Sf4!
- threat
- 1.Rg5+?
- Keys
- 1.g3!
- 1...Sxg3
- 2.f4#
- 1...Se4
- 2.Qxe4#
- 1...Rh1
- 2.Rg5#
- 1...Rh2
- 2.Rg5#
- 1...Rh3
- 2.Rg5#
- 1...Rh4
- 2.Rg5#
- 1...Rf5
- 2.Qc7#
- 1...Rg5
- 2.Rxg5#
- 1...Rh6
- 2.Rg5#
- 1...Rh7
- 2.Rg5#
- 1...Rh8
- 2.Rg5#
- 1...Sb1
- 2.Qe4#
- 1...Sf1
- 2.Qe4#
- 1...Sb3
- 2.Qe4#
- 1...Sf3
- 2.Qe4#
- 1...Sc4
- 2.Qe4#
- 1...Sc1
- 2.f4#
- 1...Sg1
- 2.f4#
- 1...Sc3
- 2.f4#
- 1...Sd4
- 2.f4#
- 1...Sf4
- 2.gxf4#
- 1...b5
- 2.Qc5#
- 1...e6
- 2.Sg6#
- 1...Sxg3
- 1.g3!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 9
- REMOVED MATES = 0
- Sets
- R(d);SBLOCK::QAB(A)
- S(a);N_GUARD::QAR1(A)
- S(a);N_GUARD::QAR1(A),XS(a)
- S(b);N_GUARD::P(B)
- P(e);N_GUARD::QAR2(A)
- P(f);SBLOCK::S(G)
- Tries
- Try
- R(D);CHECK
- Refutation
- R(d);XR(D)
- Try
- Q(A);
- Threat
- DUALS(3)
- Vars
- S(b);N_GUARD::P(B)
- Refutation
- S(b);
- Try
- Q(A);
- Threat
- DUALS(2)
- Vars
- R(d);::QAR1(A)
- R(d);N_GUARD::QAR2(A)
- S(b);N_GUARD::P(B)
- Refutation
- S(b);
- Try
- Q(A);
- Threat
- DUALS(4)
- Vars
- K(c);P-FLIGHT::QAB1(A)
- S(b);N_GUARD::QAB1(A),XS(b)
- Refutation
- S(a);XQ(A)
- Try
- Q(A);
- Threat
- DUALS(4)
- Vars
- K(c);P-FLIGHT::QAB1(A)
- S(b);::QAR1(A)
- Refutation
- S(b);
- Try
- Actual
- P(C);
- Vars
- S(b);N_GUARD,XP(C)::P(B)
- S(a);N_GUARD::QAR1(A),XS(a)
- R(d);N_GUARD::R(D)
- R(d);SBLOCK::QAB(A)
- R(d);N_GUARD::R(D),XR(d)
- S(a);N_GUARD::QAR1(A)
- S(b);N_GUARD::P(B)
- S(b);OGATE::P(C),XS(b)
- P(e);N_GUARD::QAR2(A)
- P(f);SBLOCK::S(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).