MESON Chess Problem Database
Problem Display
PID: 176477 (4Q3/4p2p/2p1P3/1PKp3R/1p2kNn1/1B2pR1P/2P1n3/3bN3 w - - 0 1)
Paalanen, Erkki
Schach-Echo, 1984
#2
11 + 10
| 6490 | yacpdb | 2018 |
SOLUTION
- SOUND
- Sets
- 1...Bxc2
- 2.Bxc2#
- 1...d4
- 2.Qxc6#
- 1...cxb5
- 2.Bxd5#
- 1...h6
- 2.Qg6#
- 1...Bxc2
- Tries
- 1.Sfd3?
- 1...cxb5
- 2.Bxd5#
- 1...Sc1
- 2.Rf4#
- 1...Sg1
- 2.Rf4#
- 1...Sc3
- 2.Rf4#
- 1...Sg3
- 2.Rf4#
- 1...Sd4
- 2.Rf4#
- 1...Sf4
- 2.Rxf4#
- 1...Sf2
- 2.Re5#
- 1...Sh2
- 2.Re5#
- 1...Se5
- 2.Rxe5#
- 1...Sf6
- 2.Re5#
- 1...Sh6
- 2.Re5#
- 1...d4
- 2.Qxc6#
- 1...h6
- 2.Qg6#
- 1...Bxc2!
- 1...cxb5
- 1.Sxd5?
- 1...Bxc2
- 2.Bxc2#
- 1...cxd5
- 2.Bxd5#
- 1...Sc1
- 2.Rf4#
- 1...Sg1
- 2.Rf4#
- 1...Sc3
- 2.Rf4#
- 1...Sg3
- 2.Rf4#
- 1...Sd4
- 2.Rf4#
- 1...Sf4
- 2.Rxf4#
- 1...Sf2
- 2.Rxe3#
- 1...Sh2
- 2.Rxe3#
- 1...Se5
- 2.Rxe3#
- 1...Sf6
- 2.Rxe3#
- 1...Sh6
- 2.Rxe3#
- 1...h6
- 2.Qg6#
- 1...cxb5!
- 1...Bxc2
- 1.Sg6?
- 1...Bxc2
- 2.Bxc2#
- 1...cxb5
- 2.Bxd5#
- 1...hxg6
- 2.Qxg6#
- 1...Sc1
- 2.Rf4#
- 1...Sg1
- 2.Rf4#
- 1...Sc3
- 2.Rf4#
- 1...Sg3
- 2.Rf4#
- 1...Sd4
- 2.Rf4#
- 1...Sf4
- 2.Rxf4#
- 1...Sf2
- 2.Re5#
- 1...Sh2
- 2.Re5#
- 1...Se5
- 2.Rxe5#
- 1...Sf6
- 2.Re5#
- 1...Sh6
- 2.Re5#
- 1...d4
- 2.Qxc6#
- 1...h6!
- 1...Bxc2
- 1.Qh8?
- threat
- 2.Qxh7#
- 1...Sxf4
- 2.Qd4#
- 1...Sg3
- 2.Qd4#
- 1...Sd4
- 2.Qxd4#
- 1...Se5
- 2.Rxe5#
- 2.Qxe5#
- 1...Sh6
- 2.Re5#
- 2.Qe5#
- 1...h6
- 2.Qh7#
- 1...Sf6!
- threat
- 1.Sfd3?
- Keys
- 1.Sfg2!
- 1...Bxc2
- 2.Bxc2#
- 1...cxb5
- 2.Bxd5#
- 1...Sc1
- 2.Rf4#
- 1...Sg1
- 2.Rf4#
- 1...Sc3
- 2.Rf4#
- 1...Sg3
- 2.Rf4#
- 1...Sd4
- 2.Rf4#
- 1...Sf4
- 2.Rxf4#
- 1...Sf2
- 2.Rxe3#
- 1...Sh2
- 2.Rxe3#
- 1...Se5
- 2.Rxe3#
- 1...Sf6
- 2.Rxe3#
- 1...Sh6
- 2.Rxe3#
- 1...d4
- 2.Qxc6#
- 1...h6
- 2.Qg6#
- 1...Bxc2
- 1.Sfg2!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 11
- REMOVED MATES = 0
- Sets
- B(a);OGATE,XP(B)::B(C),XB(a)
- P(g);OGATEB::QAB(K),XP(h)
- P(h);N_GUARD,XP(G)::B(C),XP(g)
- P(j);N_GUARD::QAB(K)
- Tries
- Try
- S(F);
- Vars
- P(h);N_GUARD,XP(G)::B(C),XP(g)
- S(b);N_GUARD::R1(D)
- S(b);N_GUARD::R1(D),XS(b)
- S(f);N_GUARD::R1(I)
- S(f);N_GUARD::R1(I),XS(f)
- P(g);OGATEB::QAB(K),XP(h)
- P(j);N_GUARD::QAB(K)
- Refutation
- B(a);XP(B)
- Try
- S(F);XP(g)
- Vars
- B(a);OGATE,XP(B)::B(C),XB(a)
- P(h);OGATE,XS(F)::B(C),XP(h)
- S(b);N_GUARD::R1(D)
- S(b);N_GUARD::R1(D),XS(b)
- S(f);N_GUARD::R1(D),XP(c)
- P(j);N_GUARD::QAB(K)
- Refutation
- P(h);XP(G)
- Try
- S(F);
- Vars
- B(a);OGATE,XP(B)::B(C),XB(a)
- P(h);N_GUARD,XP(G)::B(C),XP(g)
- P(j);OGATE,XS(F)::QAB(K),XP(j)
- S(b);N_GUARD::R1(D)
- S(b);N_GUARD::R1(D),XS(b)
- S(f);N_GUARD::R1(I)
- S(f);N_GUARD::R1(I),XS(f)
- P(g);OGATEB::QAB(K),XP(h)
- Refutation
- P(j);
- Try
- Q(K);
- Threat
- QAB(K),XP(j)
- Vars
- S(b);N_GUARD,XS(F)::QAR1(K)
- S(b);N_GUARD::QAR1(K)
- S(b);N_GUARD::QAR1(K),XS(b)
- P(j);::QAB(K)
- Refutation
- S(f);
- Try
- Actual
- S(F);
- Vars
- B(a);OGATE,XP(B)::B(C),XB(a)
- P(h);N_GUARD,XP(G)::B(C),XP(g)
- S(b);N_GUARD::R1(D)
- S(b);N_GUARD::R1(D),XS(b)
- S(f);N_GUARD::R1(D),XP(c)
- P(g);OGATEB::QAB(K),XP(h)
- P(j);N_GUARD::QAB(K)
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).