MESON Chess Problem Database
Problem Display
PID: 53354 (3Q4/7p/8/3nkBnp/2R4N/8/3P4/K7 w - - 0 1)
Ohquist, Johannes
Tijdschrift vd NSB, 1894
#2
6 + 5
SOLUTION
- SOUND
- Sets
- 1...Sc3
- 2.Qd4#
- 1...Se3
- 2.Qd4#
- 1...Sb4
- 2.Qd4#
- 1...Sf4
- 2.Qd4#
- 2.d4#
- 1...Sb6
- 2.Qd4#
- 1...Sf6
- 2.Qd4#
- 1...Sc7
- 2.Qd4#
- 1...Se7
- 2.Qd4#
- 1...Sf3
- 2.Re4#
- 1...Sh3
- 2.Re4#
- 1...Se4
- 2.Rxe4#
- 1...Se6
- 2.Re4#
- 1...Sf7
- 2.Re4#
- 1...Sc3
- Tries
- 1.Kb2?
- 1...Se7
- 2.Qd4#
- 1...Se4
- 2.Rxe4#
- 1...Sc3
- 2.Qd4#
- 1...Se3
- 2.Qd4#
- 1...Sb4
- 2.Qd4#
- 1...Sf4
- 2.Qd4#
- 2.d4#
- 1...Sb6
- 2.Qd4#
- 1...Sf6
- 2.Qd4#
- 1...Sc7
- 2.Qd4#
- 1...Sf3
- 2.Re4#
- 1...Sh3
- 2.Re4#
- 1...Se6
- 2.Re4#
- 1...Sf7
- 2.Re4#
- 1...h6!
- 1...Se7
- 1.Rg4?
- threat
- 2.d4#
- 1...Se7
- 2.Qd4#
- 1...Se4
- 2.Rxe4#
- 1...Sf3
- 2.Re4#
- 1...Se6
- 2.Re4#
- 1...hxg4!
- threat
- 1.Qe7+?
- 1...Se6
- 2.Re4#
- 2.Qxe6#
- 1...Sxe7!
- 1...Se6
- 1.d3?
- 1...Se7
- 2.Qd4#
- 1...Se4
- 2.Rxe4#
- 1...Sc3
- 2.Qd4#
- 1...Se3
- 2.Qd4#
- 1...Sb4
- 2.Qd4#
- 1...Sf4
- 2.Qd4#
- 2.d4#
- 1...Sb6
- 2.Qd4#
- 1...Sf6
- 2.Qd4#
- 1...Sc7
- 2.Qd4#
- 1...Sf3
- 2.Re4#
- 1...Sh3
- 2.Re4#
- 1...Se6
- 2.Re4#
- 1...Sf7
- 2.Re4#
- 1...h6!
- 1...Se7
- 1.Kb2?
- Keys
- 1.Rf4!
- 1...Kxf4
- 2.Qd6#
- 1...Sxf4
- 2.d4#
- 1...Se7
- 2.Qd4#
- 1...Se4
- 2.Rxe4#
- 1...h6
- 2.Sg6#
- 1...Sc3
- 2.Qd4#
- 1...Se3
- 2.Qd4#
- 1...Sb4
- 2.Qd4#
- 1...Sb6
- 2.Qd4#
- 1...Sf6
- 2.Qd4#
- 1...Sc7
- 2.Qd4#
- 1...Sf3
- 2.Re4#
- 1...Sh3
- 2.Re4#
- 1...Se6
- 2.Re4#
- 1...Sf7
- 2.Re4#
- 1...Kxf4
- 1.Rf4!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 0
- Sets
- S(a);OGATE::QAB1(F)
- S(a);OGATE,SBLOCK::QAB1(F)
- S(c);N_GUARD::R1(C)
- S(c);N_GUARD::R1(C),XS(c)
- Tries
- Try
- K(A);S_FLIGHT
- Vars
- S(a);OGATE::QAB1(F)
- S(c);N_GUARD::R1(C),XS(c)
- S(a);OGATE,SBLOCK::QAB1(F)
- S(c);N_GUARD::R1(C)
- Refutation
- P(e);
- Try
- R(C);
- Threat
- P(B)
- Vars
- S(a);OGATE::QAB1(F)
- S(c);N_GUARD::R1(C),XS(c)
- S(c);N_GUARD::R1(C)
- Refutation
- P(d);XR(C)
- Try
- Q(F);CHECK
- Refutation
- S(a);XQ(F)
- Try
- P(B);
- Vars
- S(a);OGATE::QAB1(F)
- S(c);N_GUARD::R1(C),XS(c)
- S(a);OGATE,SBLOCK::QAB1(F)
- S(c);N_GUARD::R1(C)
- Refutation
- P(e);
- Try
- Actual
- R(C);
- Vars
- K(b);S_FLIGHT,XR(C)::QAB(F)
- S(a);SBLOCK,XR(C)::P(B)
- S(a);OGATE::QAB1(F)
- S(c);N_GUARD::R1(C),XS(c)
- P(e);N_GUARD::S(D)
- S(a);OGATE,SBLOCK::QAB1(F)
- S(c);N_GUARD::R1(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).