MESON Chess Problem Database
Problem Display
PID: 280 (6Q1/p2pPRbb/3P1N2/K1p5/1Nk2r2/3R3q/n5n1/B4B2 w - - 0 1)
Mansfield, Comins
Comm., Yugoslav Chess Federation, 1950
#2
10 + 10
| 3550 | Complete Mansfield/II | 1997 |
SOLUTION
- SOUND
- Sets
- 1...Rd4
- 2.Rc3#
- 1...Re4
- 2.Re3#
- 1...Rf5
- 2.Rf3#
- 1...Bxg8
- 2.Rf3#
- 1...cxb4
- 2.Qc8#
- 1...Rd4
- Tries
- 1.Sxh7?
- threat
- 2.Rf3#
- 2.Rxf4#
- 2.Rf5#
- 1...Qxd3
- 2.Rxf4#
- 2.Rf5#
- 2.Rf6#
- 1...Qxh7
- 2.Rxf4#
- 1...Rxf1
- 2.Rf4#
- 2.Rf5#
- 1...Rxf7
- 2.Re3#
- 2.Rf3#
- 2.Rg3#
- 2.Rxh3#
- 1...Bxa1
- 2.Rxf4#
- 2.Rf5#
- 1...Sxb4
- 2.Rxf4#
- 1...cxb4
- 2.Rf5#
- 2.Qc8#
- 1...Bc3
- 2.Rxf4#
- 2.Rf5#
- 1...Sc3
- 2.Rxf4#
- 1...Qf5
- 2.Rxf5#
- 1...Qh1
- 2.Rxf4#
- 2.Rf5#
- 2.Rf6#
- 1...Qe3
- 2.Rxf4#
- 1...Qf3
- 2.Rxf3#
- 2.Rxf4#
- 1...Qh5
- 2.Rf3#
- 2.Rxf4#
- 1...Qh6
- 2.Rf3#
- 2.Rxf4#
- 2.Rf6#
- 1...Rf2
- 2.Rf4#
- 2.Rf5#
- 1...Rf3
- 2.Rdxf3#
- 2.Rf4#
- 2.Rf5#
- 1...Rd4
- 2.Rc3#
- 1...Re4
- 2.Re3#
- 1...Rg4
- 2.Re3#
- 2.Rdf3#
- 2.Rg3#
- 2.Rxh3#
- 2.Rf2#
- 2.Rff3#
- 2.Rf4#
- 2.Rf5#
- 2.Rf6#
- 2.Rxg7#
- 2.Rf8#
- 1...Rh4
- 2.Re3#
- 2.Rdf3#
- 2.Rg3#
- 2.Rxh3#
- 2.Rf4#
- 2.Rf5#
- 1...Rf5
- 2.Rf3#
- 2.Rxf5#
- 1...Rf6
- 2.Rf3#
- 1...Bb2
- 2.Rxf4#
- 2.Rf5#
- 1...Bd4
- 2.Rc3#
- 2.Rf3#
- 2.Rf5#
- 1...Bf6
- 2.Rf3#
- 1...Sc1
- 2.Rxf4#
- 2.Rf5#
- 1...Se1
- 2.Rxf4#
- 2.Rf5#
- 1...Se3
- 2.Rxf4#
- 1...Sh4
- 2.Rxf4#
- 2.Rf5#
- 1...Qe6!
- threat
- 1.Rxh3+?
- 1...Bd3
- 2.Rxg7#
- 2.Rf8#
- 1...Rxf1!
- 1...Bd3
- 1.Rxg7+?
- 1...Bxg8
- 2.Rf3#
- 1...Qe6!
- 1...Bxg8
- 1.Rf8+?
- 1...Bxg8
- 2.Rf3#
- 1...Qe6!
- 1...Bxg8
- 1.Sxh7?
- Keys
- 1.Sg4!
- threat
- 2.Rxf4#
- 1...Rxf1
- 2.Rf4#
- 1...Rxg4
- 2.Rf4#
- 1...Rxf7
- 2.Qxf7#
- 1...Bxg8
- 2.Rf3#
- 1...cxb4
- 2.Qc8#
- 1...Rf2
- 2.Rf4#
- 1...Rf3
- 2.Rf4#
- 1...Rd4
- 2.Rc3#
- 1...Re4
- 2.Re3#
- 1...Rf5
- 2.Rf3#
- 1...Rf6
- 2.Se5#
- 1...Bd4
- 2.Rc3#
- 1...Bf6
- 2.Rxh7#
- 1...Bf5
- 2.Rxf5#
- threat
- 1.Sg4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 9
- REMOVED MATES = 0
- Sets
- R(e);SBLOCK::B(B)+R(C),DCHECK
- R(e);N_GUARD,S_CUTB(j)::B(B)+R(C)
- R(e);S_CUTB(j)::B(B)+R(C)
- B(j);N_GUARD,XQ(J)::B(B)+R(C)
- P(f);OGATEB,XS(D)::QAR(J)
- Tries
- Try
- S(G);XB(j)
- Threat
- DUALS(3)
- Vars
- Q(c);XS(G)::QAB(J)+R(I),DCHECK,XR(e)
- S(a);XS(D)::QAB(J)+R(I),DCHECK,XR(e)
- S(a);::QAB(J)+R(I),DCHECK,XR(e)
- Q(c);::QAB(J)+R(I),XQ(c)
- Q(c);::QAB(J)+R(I),DCHECK,XR(e)
- R(e);SBLOCK::B(B)+R(C),DCHECK
- R(e);N_GUARD::B(B)+R(C)
- R(e);::B(B)+R(C)
- B(i);::B(B)+R(C)
- S(b);::QAB(J)+R(I),DCHECK,XR(e)
- Refutation
- Q(c);
- Try
- R(C);CHECK,XQ(c)
- Refutation
- R(e);XB(B)
- Try
- R(I);CHECK,XB(i)
- Vars
- B(j);XQ(J)::B(B)+R(C)
- Refutation
- Q(c);P_SPINQ(c)
- Try
- R(I);CHECK
- Vars
- B(j);XQ(J)::B(B)+R(C)
- Refutation
- Q(c);P_SPINQ(c)
- Try
- Actual
- S(G);
- Threat
- QAB(J)+R(I),DCHECK,XR(e)
- Vars
- R(e);XB(B)::QAB(J)+R(I),DCHECK
- R(e);XS(G)::QAB(J)+R(I),DCHECK
- R(e);OGATE,P_SPINR(e),XR(I)::QAB(J),XR(e)
- B(j);N_GUARD,XQ(J)::B(B)+R(C)
- P(f);OGATEB,XS(D)::QAR(J)
- R(e);::QAB(J)+R(I),DCHECK
- R(e);SBLOCK::B(B)+R(C),DCHECK
- R(e);N_GUARD,S_CUTB(j)::B(B)+R(C)
- R(e);S_CUTB(j)::B(B)+R(C)
- R(e);S_CUTB(i)::S(G)
- B(i);SBLOCK::B(B)+R(C),DCHECK
- B(i);OGATE::QAB(J)+R(I),XB(j)
- B(j);N_GUARD::QAB(J)+R(I),XB(j)
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).