MESON Chess Problem Database
Problem Display
PID: 110773 (7n/2p1N3/2P1P2B/2NPr1pp/2p2k1p/4pP1B/1p2K2P/1Q6 w - - 0 1)
Fjellstrom, Zakarias
Springaren, 1954
#2
11 + 10
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Re4
- 2.Qxe4#
- 1...Rxd5
- 2.Qe4#
- 1...Rf5
- 2.Qe4#
- 2.Qxf5#
- 1...Rxe6
- 2.Qf5#
- 1...Sg6
- 2.Sxg6#
- 1...Sf7
- 2.Sg6#
- 1...c3
- 2.Sd3#
- 1...Re4
- Tries
- 1.Sa4?
- 1...Rxd5
- 2.Qe4#
- 1...Rxe6
- 2.Qf5#
- 1...Re4
- 2.Qxe4#
- 1...Rf5
- 2.Qe4#
- 2.Qxf5#
- 1...Sg6
- 2.Sxg6#
- 1...Sf7
- 2.Sg6#
- 1...c3!
- 1...Rxd5
- 1.Sa6?
- 1...Rxd5
- 2.Qe4#
- 1...Rxe6
- 2.Qf5#
- 1...Re4
- 2.Qxe4#
- 1...Rf5
- 2.Qe4#
- 2.Qxf5#
- 1...Sg6
- 2.Sxg6#
- 1...Sf7
- 2.Sg6#
- 1...c3!
- 1...Rxd5
- 1.Sb7?
- 1...Rxd5
- 2.Qe4#
- 1...Rxe6
- 2.Qf5#
- 1...Re4
- 2.Qxe4#
- 1...Rf5
- 2.Qe4#
- 2.Qxf5#
- 1...Sg6
- 2.Sxg6#
- 1...Sf7
- 2.Sg6#
- 1...c3!
- 1...Rxd5
- 1.Sd7?
- 1...Rxd5
- 2.Sxd5#
- 2.Qe4#
- 1...Rxe6
- 2.Qf5#
- 1...Re4
- 2.Qxe4#
- 1...Rf5
- 2.Qe4#
- 2.Qxf5#
- 1...Sg6
- 2.Sxg6#
- 1...Sf7
- 2.Sg6#
- 1...c3!
- 1...Rxd5
- 1.Bf1?
- 1...Rxd5
- 2.Qe4#
- 1...Rxe6
- 2.Qf5#
- 1...Re4
- 2.Qxe4#
- 1...Rf5
- 2.Qe4#
- 2.Qxf5#
- 1...c3
- 2.Sd3#
- 1...Sg6
- 2.Sxg6#
- 1...Sf7
- 2.Sg6#
- 1...h3!
- 1...Rxd5
- 1.Bg2?
- 1...Rxd5
- 2.Qe4#
- 1...Rxe6
- 2.Qf5#
- 1...Re4
- 2.Qxe4#
- 1...Rf5
- 2.Qe4#
- 2.Qxf5#
- 1...c3
- 2.Sd3#
- 1...Sg6
- 2.Sxg6#
- 1...Sf7
- 2.Sg6#
- 1...h3!
- 1...Rxd5
- 1.Bxg5+?
- 1...Rxg5
- 2.Qe4#
- 1...Kxg5!
- 1...Rxg5
- 1.Bg7?
- 1...Rxd5
- 2.Sxd5#
- 2.Qe4#
- 1...Rxe6
- 2.Sxe6#
- 2.Qf5#
- 1...c3
- 2.Sd3#
- 1...Re4
- 2.Qxe4#
- 1...Rf5
- 2.Qe4#
- 2.Qxf5#
- 1...Sg6
- 2.Sxg6#
- 1...Sf7
- 2.Sg6#
- 1...g4!
- 1...Rxd5
- 1.Bf8?
- 1...Rxd5
- 2.Qe4#
- 1...Rxe6
- 2.Qf5#
- 1...Re4
- 2.Qxe4#
- 1...Rf5
- 2.Qe4#
- 2.Qxf5#
- 1...c3
- 2.Sd3#
- 1...Sg6
- 2.Sxg6#
- 1...Sf7
- 2.Sg6#
- 1...g4!
- 1...Rxd5
- 1.d6?
- 1...Rxc5
- 2.Qe4#
- 1...Rxe6
- 2.Qf5#
- 1...Re4
- 2.Qxe4#
- 1...Rd5
- 2.Qe4#
- 1...Rf5
- 2.Qe4#
- 2.Qxf5#
- 1...c3
- 2.Sd3#
- 1...Sg6
- 2.Sxg6#
- 1...Sf7
- 2.Sg6#
- 1...cxd6!
- 1...Rxc5
- 1.Sa4?
- Keys
- 1.Qxb2!
- 1...Rxd5
- 2.Sxd5#
- 1...Rxe6
- 2.Sxe6#
- 1...c3
- 2.Sd3#
- 1...Re4
- 2.Qf6#
- 1...Rf5
- 2.Qd4#
- 1...Sg6
- 2.Sxg6#
- 1...Sf7
- 2.Sg6#
- 1...Rxd5
- 1.Qxb2!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 3
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- R(f);N_GUARD::QAR1(A),XR(f)
- R(f);N_GUARD,XP(G)::QAR1(A)
- R(f);N_GUARD,XP(I)::QAR1(A)
- S(j);N_GUARD::S(K),XS(j)
- S(j);N_GUARD::S(K)
- P(c);N_GUARD::S(F)
- Tries
- Try
- S(F);
- Vars
- R(f);N_GUARD,XP(G)::QAR1(A)
- R(f);N_GUARD,XP(I)::QAR1(A)
- R(f);N_GUARD::QAR1(A),XR(f)
- S(j);N_GUARD::S(K),XS(j)
- S(j);N_GUARD::S(K)
- Refutation
- P(c);
- Try
- S(F);
- Vars
- R(f);N_GUARD,XP(G)::QAR1(A)
- R(f);N_GUARD,XP(I)::QAR1(A)
- R(f);N_GUARD::QAR1(A),XR(f)
- S(j);N_GUARD::S(K),XS(j)
- S(j);N_GUARD::S(K)
- Refutation
- P(c);
- Try
- S(F);
- Vars
- R(f);N_GUARD,XP(G)::QAR1(A)
- R(f);N_GUARD,XP(I)::QAR1(A)
- R(f);N_GUARD::QAR1(A),XR(f)
- S(j);N_GUARD::S(K),XS(j)
- S(j);N_GUARD::S(K)
- Refutation
- P(c);
- Try
- S(F);
- Vars
- R(f);N_GUARD,XP(I)::QAR1(A)
- R(f);N_GUARD::QAR1(A),XR(f)
- S(j);N_GUARD::S(K),XS(j)
- S(j);N_GUARD::S(K)
- Refutation
- P(c);
- Try
- B(E);
- Vars
- R(f);N_GUARD,XP(G)::QAR1(A)
- R(f);N_GUARD,XP(I)::QAR1(A)
- R(f);N_GUARD::QAR1(A),XR(f)
- P(c);N_GUARD::S(F)
- S(j);N_GUARD::S(K),XS(j)
- S(j);N_GUARD::S(K)
- Refutation
- P(e);
- Try
- B(E);
- Vars
- R(f);N_GUARD,XP(G)::QAR1(A)
- R(f);N_GUARD,XP(I)::QAR1(A)
- R(f);N_GUARD::QAR1(A),XR(f)
- P(c);N_GUARD::S(F)
- S(j);N_GUARD::S(K),XS(j)
- S(j);N_GUARD::S(K)
- Refutation
- P(e);
- Try
- B(J);CHECK,XP(g)
- Vars
- R(f);SBLOCK,XB(J)::QAR1(A)
- Refutation
- K(d);S_FLIGHT,XB(J)
- Try
- B(J);N_PINP(g)
- Vars
- P(c);N_GUARD::S(F)
- R(f);N_GUARD::QAR1(A),XR(f)
- S(j);N_GUARD::S(K),XS(j)
- S(j);N_GUARD::S(K)
- Refutation
- P(g);
- Try
- B(J);N_PINP(g)
- Vars
- R(f);N_GUARD,XP(G)::QAR1(A)
- R(f);N_GUARD,XP(I)::QAR1(A)
- R(f);N_GUARD::QAR1(A),XR(f)
- P(c);N_GUARD::S(F)
- S(j);N_GUARD::S(K),XS(j)
- S(j);N_GUARD::S(K)
- Refutation
- P(g);
- Try
- P(G);
- Vars
- R(f);N_GUARD,XS(F)::QAR1(A)
- R(f);N_GUARD,XP(I)::QAR1(A)
- R(f);N_GUARD::QAR1(A),XR(f)
- R(f);N_GUARD::QAR1(A)
- P(c);N_GUARD::S(F)
- S(j);N_GUARD::S(K),XS(j)
- S(j);N_GUARD::S(K)
- Refutation
- P(i);XP(G)
- Try
- Actual
- Q(A);XP(a)
- Vars
- R(f);XP(G)::S(K),XR(f)
- R(f);XP(I)::S(F),XR(f)
- P(c);N_GUARD::S(F)
- R(f);OGATE::QAR2(A)
- R(f);N_GUARD::QAR2(A)
- S(j);N_GUARD::S(K),XS(j)
- S(j);N_GUARD::S(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).