MESON Chess Problem Database
Problem Display
PID: 70245 (8/R4B2/1pk5/1p3p2/1B3n2/4nK2/8/1Q6 w - - 0 1)
ten Cate, Pieter
Chess, 1950
#2
5 + 6
SOLUTION
- SOUND
- Sets
- 1...Sf1
- 2.Qc2#
- 2.Qc1#
- 1...Sc2
- 2.Qxc2#
- 1...Seg2
- 2.Qc2#
- 2.Qc1#
- 1...Sg4
- 2.Qc2#
- 2.Qc1#
- 1...Sed5
- 2.Be8#
- 1...Sfd5
- 2.Be8#
- 1...Sf1
- Tries
- 1.Qd3?
- threat
- 2.Be8#
- 2.Qd6#
- 2.Qd7#
- 1...Sc4
- 2.Be8#
- 2.Qd7#
- 1...Sed5
- 2.Be8#
- 1...Sfd5
- 2.Be8#
- 1...Sxd3!
- threat
- 1.Qe4+?
- 1...Sed5
- 2.Be8#
- 2.Qe8#
- 1...Sfd5
- 2.Be8#
- 2.Qe6#
- 2.Qe8#
- 1...fxe4+!
- 1...Sed5
- 1.Qxf5?
- threat
- 2.Be8#
- 2.Qd7#
- 2.Qc8#
- 1...Sed5
- 2.Be8#
- 2.Qd7#
- 1...Sfd5
- 2.Be8#
- 2.Qe6#
- 2.Qd7#
- 1...Se6
- 2.Be8#
- 2.Qxe6#
- 1...Sxf5!
- threat
- 1.Qc1+?
- 1...Sc2
- 2.Qxc2#
- 1...Sc4!
- 1...Sc2
- 1.Qd3?
- Keys
- 1.Qh1!
- 1...Se6
- 2.Kxe3#
- 1...Sd1
- 2.Kxf4#
- 1...Sf1
- 2.Kxf4#
- 1...Sc2
- 2.Kxf4#
- 1...Seg2
- 2.Qc1#
- 1...Sc4
- 2.Kxf4#
- 1...Sg4
- 2.Kxf4#
- 2.Qc1#
- 1...Sed5
- 2.Be8#
- 1...Se2
- 2.Kxe3#
- 2.Qh6#
- 1...Sfg2
- 2.Qh6#
- 1...Sd3
- 2.Kxe3#
- 2.Qh6#
- 1...Sh3
- 2.Kxe3#
- 1...Sfd5
- 2.Be8#
- 1...Sh5
- 2.Kxe3#
- 1...Sg6
- 2.Kxe3#
- 1...Se6
- 1.Qh1!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 1
- ADDED MATES = 9
- REMOVED MATES = 0
- Sets
- S(a);N_GUARD::QAR(A),XS(a)
- S(a);SBLOCK::B(E)
- S(b);SBLOCK::B(E)
- Tries
- Try
- Q(A);
- Threat
- DUALS(3)
- Vars
- S(a);::B(E)
- S(b);::B(E)
- Refutation
- S(b);XQ(A)
- Try
- Q(A);CHECK
- Refutation
- P(d);CHECK,XQ(A)
- Try
- Q(A);XP(d)
- Threat
- DUALS(3)
- Refutation
- S(a);XQ(A)
- Try
- Q(A);CHECK
- Vars
- S(a);N_GUARD,P_SPINS(a)::QAR(A),XS(a)
- Refutation
- S(a);P_SPINS(a)
- Try
- Actual
- Q(A);
- Vars
- S(b);N_GUARD::QAB(A)+K(B),XS(a)
- S(a);N_GUARD::QAB(A)+K(B),XS(b)
- S(a);N_GUARD::QAR(A)
- S(a);SBLOCK::B(E)
- S(b);N_GUARD::QAR(A)
- S(b);SBLOCK::B(E)
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).