MESON Chess Problem Database
Problem Display
PID: 56879 (3Q4/3p4/N2pp3/2p1RpB1/3p4/2Pkp3/B1R5/1K6 w - - 0 1)
Wirtanen, Erkki Aukusti
2nd Prize, Main-Post, 1966
#2
8 + 8
| 3772 | FIDE Album (1965-1967) | 1976 |
SOLUTION
- SOUND
- Sets
- 1...c4
- 2.Sb4#
- 1...dxe5
- 2.Sxc5#
- 1...d5
- 2.Sxc5#
- 1...c4
- Tries
- 1.Qa5?
- 1...dxc3
- 2.Qxc3#
- 1...dxe5
- 2.Sxc5#
- 1...e2
- 2.Rd2#
- 1...c4
- 2.Sb4#
- 1...d5
- 2.Sxc5#
- 1...f4!
- 1...dxc3
- 1.Qf6?
- 1...dxc3
- 2.Rxe3#
- 1...dxe5
- 2.Sxc5#
- 1...c4
- 2.Sb4#
- 1...f4
- 2.Qg6#
- 1...d5
- 2.Sxc5#
- 1...e2!
- 1...dxc3
- 1.Qe7?
- 1...dxc3
- 2.Qxd6#
- 1...dxe5
- 2.Sxc5#
- 1...c4
- 2.Sb4#
- 1...f4
- 2.Qh7#
- 1...d5
- 2.Sxc5#
- 1...e2!
- 1...dxc3
- 1.Qxd7?
- 1...dxc3
- 2.Qxd6#
- 1...dxe5
- 2.Sxc5#
- 1...c4
- 2.Sb4#
- 1...f4
- 2.Qh7#
- 1...d5
- 2.Sxc5#
- 1...e2!
- 1...dxc3
- 1.Qa8?
- 1...dxe5
- 2.Sxc5#
- 1...e2
- 2.Qf3#
- 1...c4
- 2.Sb4#
- 1...f4
- 2.Qe4#
- 1...d5
- 2.Sxc5#
- 1...dxc3!
- 1...dxe5
- 1.Qa5?
- Keys
- 1.Qh8!
- 1...dxc3
- 2.Rxe3#
- 1...dxe5
- 2.Sxc5#
- 1...e2
- 2.Qh3#
- 1...c4
- 2.Sb4#
- 1...f4
- 2.Qh7#
- 1...d5
- 2.Sxc5#
- 1...dxc3
- 1.Qh8!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 0
- Sets
- P(d);N_GUARD::S(G)
- P(f);N_GUARD,XR(E)::S(G),XP(d)
- P(f);N_GUARD::S(G),XP(d)
- Tries
- Try
- Q(H);
- Vars
- P(c);OGATE,XP(D)::QAR1(H),XP(c)
- P(f);N_GUARD,XR(E)::S(G),XP(d)
- P(b);N_GUARD::R1(C)
- P(d);N_GUARD::S(G)
- P(f);N_GUARD::S(G),XP(d)
- Refutation
- P(e);
- Try
- Q(H);
- Vars
- P(c);N_GUARD,XP(D)::R1(E),XP(b)
- P(f);N_GUARD,XR(E)::S(G),XP(d)
- P(d);N_GUARD::S(G)
- P(e);OGATEB::QAB(H)
- P(f);N_GUARD::S(G),XP(d)
- Refutation
- P(b);
- Try
- Q(H);
- Vars
- P(c);OGATEB,XP(D)::QAR(H),XP(f)
- P(f);N_GUARD,XR(E)::S(G),XP(d)
- P(d);N_GUARD::S(G)
- P(e);OGATEB::QAB(H)
- P(f);N_GUARD::S(G),XP(d)
- Refutation
- P(b);
- Try
- Q(H);XP(h)
- Vars
- P(c);OGATEB,P_SPINP(f),XP(D)::QAR(H),XP(f)
- P(f);N_GUARD,P_SPINP(c),XR(E)::S(G),XP(d)
- P(d);N_GUARD::S(G)
- P(e);OGATEB::QAB(H)
- P(f);N_GUARD::S(G),XP(d)
- Refutation
- P(b);
- Try
- Q(H);
- Vars
- P(f);N_GUARD,XR(E)::S(G),XP(d)
- P(b);OGATEB::QAR2(H)
- P(d);N_GUARD::S(G)
- P(e);N_GUARD::QAB1(H)
- P(f);N_GUARD::S(G),XP(d)
- Refutation
- P(c);XP(D)
- Try
- Actual
- Q(H);
- Vars
- P(c);N_GUARD,XP(D)::R1(E),XP(b)
- P(f);N_GUARD,XR(E)::S(G),XP(d)
- P(b);OGATEB::QAR(H)
- P(d);N_GUARD::S(G)
- P(e);OGATEB::QAB(H)
- P(f);N_GUARD::S(G),XP(d)
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).