MESON Chess Problem Database
Problem Display
PID: 169808 (1B5Q/2n2p1B/ppP1p1n1/Rb1PN1p1/1P1k2P1/1PNP4/3P4/K7 w - - 0 1)
Jonsson, Nils Gustav Helmer
3rd HM., Upsala Schacksallskap, 1945
#2
14 + 9
| 6490 | yacpdb | 2018 |
SOLUTION
- SOUND
- Sets
- 1...Bxd3
- 2.Sf3#
- 1...Ba4
- 2.Se2#
- 1...Bc4
- 2.Se2#
- 1...Bxc6
- 2.Se2#
- 1...Sf4
- 2.Sf3#
- 1...Sh4
- 2.Sf3#
- 1...Se7
- 2.Sf3#
- 1...Sf8
- 2.Sf3#
- 1...Sxh8
- 2.Sf3#
- 1...Sxd5
- 2.Se2#
- 1...bxa5
- 2.Ba7#
- 1...exd5
- 2.Se2#
- 1...Bxd3
- Tries
- 1.Bxc7?
- threat
- 2.Bxb6#
- 1...Sxh8
- 2.Sf3#
- 1...bxa5
- 2.Bb6#
- 1...f6!
- threat
- 1.Bxc7?
- Keys
- 1.Qf6!
- 1...Bxd3
- 2.Sf3#
- 1...Bxc6
- 2.Se2#
- 1...Sxe5
- 2.Qf2#
- 1...Sxd5
- 2.Se2#
- 1...bxa5
- 2.Ba7#
- 1...exd5
- 2.Se2#
- 1...Ba4
- 2.Se2#
- 1...Bc4
- 2.Se2#
- 1...Sf4
- 2.Sf3#
- 1...Sh4
- 2.Sf3#
- 1...Se7
- 2.Sf3#
- 1...Sf8
- 2.Sf3#
- 1...Sh8
- 2.Sf3#
- 1...Sa8
- 2.Qf2#
- 1...Se8
- 2.Qf2#
- 1...Bxd3
- 1.Qf6!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 0
- Sets
- B(b);SBLOCK,XP(E)::QAB(N)+S(J),DCHECK
- B(b);::S(D)
- B(b);XP(K)::S(D)
- S(g);::QAB(N)+S(J),DCHECK
- S(g);XQ(N)::S(J)
- S(h);SBLOCK,XP(I)::S(D)
- P(e);OGATEB,XR(H)::B(M)
- P(f);SBLOCK,XP(I)::S(D)
- Tries
- Try
- B(M);XS(h)
- Threat
- B(M),XP(e)
- Vars
- S(g);XQ(N)::S(J)
- P(e);XR(H)::B(M)
- Refutation
- P(i);
- Try
- Actual
- Q(N);
- Vars
- B(b);SBLOCK,XP(E)::QAB(N)+S(J),DCHECK
- B(b);XP(K)::S(D)
- S(g);P_SPINS(g),SBLOCK,XS(J)::QAB(N)
- S(h);SBLOCK,XP(I)::S(D)
- P(e);OGATEB,XR(H)::B(M)
- P(f);SBLOCK,XP(I)::S(D)
- B(b);::S(D)
- S(g);::QAB(N)+S(J),DCHECK
- S(h);::QAB(N)
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).