MESON Chess Problem Database
Problem Display
PID: 245672 (2b5/K3Q1p1/4n2N/p2pp2p/4k1nR/3pp3/1B2B3/3N1R2 w - - 0 1)
Wirtanen, Erkki Aukusti
Schach 01. TT, 1958
#2
8 + 11
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Sd4
- 2.Sc3#
- 1...Sf4
- 2.Bf3#
- 1...Sc5
- 2.Qxe5#
- 1...Sg5
- 2.Qxe5#
- 1...Sc7
- 2.Qxe5#
- 1...Sd8
- 2.Qxe5#
- 1...Sf8
- 2.Qxe5#
- 1...gxh6
- 2.Qh7#
- 1...g5
- 2.Qh7#
- 1...Sd4
- Tries
- 1.Bxg4?
- threat
- 2.Bf3#
- 2.Bf5#
- 2.Bxe6#
- 1...gxh6
- 2.Bf5#
- 2.Bxe6#
- 2.Qh7#
- 1...d2
- 2.Bf5#
- 1...d4
- 2.Bf3#
- 2.Bxe6#
- 1...Sd4
- 2.Sc3#
- 2.Bf3#
- 2.Bf5#
- 2.Be6#
- 2.Bd7#
- 2.Bxc8#
- 1...Sf4
- 2.Bf3#
- 2.Qxe5#
- 1...Sc5
- 2.Bf3#
- 2.Bf5#
- 2.Be6#
- 2.Bd7#
- 2.Bxc8#
- 2.Qxe5#
- 1...Sg5
- 2.Bf3#
- 2.Bf5#
- 2.Be6#
- 2.Bd7#
- 2.Bxc8#
- 2.Qxe5#
- 1...Sc7
- 2.Bf3#
- 2.Bf5#
- 2.Be6#
- 2.Bd7#
- 2.Bxc8#
- 2.Qxe5#
- 1...Sd8
- 2.Bf3#
- 2.Bf5#
- 2.Be6#
- 2.Bd7#
- 2.Bxc8#
- 2.Qxe5#
- 1...Sf8
- 2.Bf3#
- 2.Bf5#
- 2.Be6#
- 2.Bd7#
- 2.Bxc8#
- 2.Qxe5#
- 1...g5
- 2.Bf3#
- 2.Bf5#
- 2.Qh7#
- 1...hxg4!
- threat
- 1.Rxg4+?
- 1...Sf4
- 2.Bf3#
- 2.Rfxf4#
- 2.Rgxf4#
- 2.Qxe5#
- 1...hxg4!
- 1...Sf4
- 1.Qb4+?
- 1...Sd4
- 2.Sc3#
- 1...d4
- 2.Sc3#
- 1...axb4!
- 1...Sd4
- 1.Qc5?
- threat
- 2.Sc3#
- 2.Qxe3#
- 1...dxe2
- 2.Qxe3#
- 2.Qc2#
- 1...Sf4
- 2.Sc3#
- 2.Bf3#
- 1...Sd4
- 2.Sc3#
- 1...d4
- 2.Qc6#
- 1...Sxc5!
- threat
- 1.Qg5?
- threat
- 2.Bf3#
- 2.Qxe3#
- 2.Qxe5#
- 2.Qf5#
- 2.Qg6#
- 1...dxe2
- 2.Qxe3#
- 2.Qf5#
- 2.Qg6#
- 1...d4
- 2.Bf3#
- 1...Sf4
- 2.Bf3#
- 1...Sd4
- 2.Sc3#
- 2.Qxe3#
- 1...Sc5
- 2.Bf3#
- 2.Qxe3#
- 2.Qxe5#
- 1...Sc7
- 2.Bf3#
- 2.Qxe3#
- 2.Qxe5#
- 1...Sd8
- 2.Bf3#
- 2.Qxe3#
- 2.Qxe5#
- 1...Sf8
- 2.Bf3#
- 2.Qxe3#
- 2.Qxe5#
- 1...d2
- 2.Qxe3#
- 2.Qxe5#
- 2.Qf5#
- 2.Qg6#
- 1...g6
- 2.Bf3#
- 2.Qxe3#
- 2.Qxe5#
- 2.Qxg6#
- 1...Sxg5!
- threat
- 1.Qd6?
- threat
- 2.Qxe5#
- 1...Sf4
- 2.Bf3#
- 1...Sd4
- 2.Sc3#
- 1...d4
- 2.Qc6#
- 1...dxe2!
- threat
- 1.Qf6?
- threat
- 2.Bf3#
- 2.Qxe5#
- 2.Qf3#
- 2.Qf5#
- 2.Qg6#
- 1...dxe2
- 2.Qf5#
- 2.Qg6#
- 1...d4
- 2.Bf3#
- 2.Qf3#
- 1...Sf4
- 2.Bf3#
- 1...Sd4
- 2.Sc3#
- 1...Sc5
- 2.Bf3#
- 2.Qxe5#
- 2.Qf3#
- 1...Sg5
- 2.Qxe5#
- 1...Sc7
- 2.Bf3#
- 2.Qxe5#
- 2.Qf3#
- 1...Sd8
- 2.Bf3#
- 2.Qxe5#
- 2.Qf3#
- 1...Sf8
- 2.Bf3#
- 2.Qxe5#
- 2.Qf3#
- 1...d2
- 2.Qxe5#
- 2.Qf3#
- 2.Qf5#
- 2.Qg6#
- 1...g6
- 2.Bf3#
- 2.Qxe5#
- 2.Qf3#
- 2.Qxg6#
- 1...gxf6!
- threat
- 1.Qc7?
- threat
- 2.Qxe5#
- 1...dxe2
- 2.Qc2#
- 1...d4
- 2.Qc6#
- 1...Sf4
- 2.Bf3#
- 1...Sd4
- 2.Sc3#
- 1...Sxc7!
- threat
- 1.Qf7?
- threat
- 2.Bf3#
- 2.Qg6#
- 2.Qf3#
- 2.Qf5#
- 1...dxe2
- 2.Qg6#
- 2.Qf5#
- 1...d4
- 2.Bf3#
- 2.Qf3#
- 1...Sf4
- 2.Bf3#
- 1...Sd4
- 2.Sc3#
- 1...Sc5
- 2.Bf3#
- 2.Qf3#
- 1...Sc7
- 2.Bf3#
- 2.Qf3#
- 1...Sd8
- 2.Bf3#
- 2.Qf3#
- 1...Sf8
- 2.Bf3#
- 2.Qf3#
- 1...d2
- 2.Qg6#
- 2.Qf3#
- 2.Qf5#
- 1...g6
- 2.Bf3#
- 2.Qxg6#
- 2.Qf3#
- 1...Sg5!
- threat
- 1.Bxg4?
- Keys
- 1.Qe8!
- threat
- 2.Qg6#
- 1...d4
- 2.Qc6#
- 1...Sf4
- 2.Bf3#
- 1...Sd4
- 2.Sc3#
- 1...Sc5
- 2.Qxe5#
- 1...Sg5
- 2.Qxe5#
- 1...Sc7
- 2.Qxe5#
- 1...Sd8
- 2.Qxe5#
- 1...Sf8
- 2.Qxe5#
- 1...g6
- 2.Qxg6#
- threat
- 1.Qe8!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 2
- Sets
- S(i);P_SPINP(g),SBLOCK::S(A)
- S(i);N_SPINS(d),P_SPINP(g),SBLOCK::B(D)
- S(i);OGATE,P_SPINP(g)::QAR1(H),XP(g)
- P(j);OGATE,XS(F)::QAB(H)
- P(j);OGATE::QAB(H)
- Tries
- Try
- B(D);XS(d)
- Threat
- DUALS(3)
- Vars
- P(a);::R(E)+B(D),DCHECK
- Refutation
- P(h);P_SPINP(h),XB(D)
- Try
- R(E);CHECK,XS(d)
- Refutation
- P(h);XR(E)
- Try
- Q(H);CHECK
- Vars
- S(i);N_SPINS(d),P_SPINS(i)::S(A)
- P(f);P_SPINP(f)::S(A)
- Refutation
- P(e);XQ(H)
- Try
- Q(H);
- Threat
- DUALS(2)
- Vars
- S(i);::S(A)
- P(f);OGATEB::QAB(H)
- Refutation
- S(i);XQ(H)
- Try
- Q(H);
- Threat
- DUALS(5)
- Vars
- P(f);::B(D)
- S(i);N_SPINS(d)::B(D)
- Refutation
- S(i);XQ(H)
- Try
- Q(H);
- Threat
- QAR1(H),XP(g)
- Vars
- S(i);N_SPINS(d),SBLOCK::B(D)
- S(i);SBLOCK::S(A)
- P(f);OGATEB::QAB(H)
- Refutation
- P(a);XB(D)
- Try
- Q(H);
- Threat
- DUALS(5)
- Vars
- S(i);N_SPINS(d)::B(D)
- S(i);SBLOCK::S(A)
- S(i);::QAR1(H),XP(g)
- Refutation
- P(j);XQ(H)
- Try
- Q(H);
- Threat
- QAR1(H),XP(g)
- Vars
- P(a);OGATEB,XB(D)::QAB(H)
- P(f);OGATEB::QAB(H)
- S(i);N_SPINS(d),SBLOCK::B(D)
- S(i);SBLOCK::S(A)
- Refutation
- S(i);XQ(H)
- Try
- Q(H);
- Threat
- DUALS(4)
- Vars
- S(i);N_SPINS(d)::B(D)
- S(i);SBLOCK::S(A)
- Refutation
- S(i);
- Try
- Actual
- Q(H);
- Threat
- QAB(H)
- Vars
- P(f);OGATEB::QAB(H)
- S(i);N_SPINS(d),P_SPINP(g),SBLOCK::B(D)
- S(i);P_SPINP(g),SBLOCK::S(A)
- S(i);OGATE,P_SPINP(g)::QAR1(H),XP(g)
- P(j);::QAB(H),XP(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).