MESON Chess Problem Database
Problem Display
PID: 245690 (3B1K2/1pQ5/bp1P1p2/7R/3kn2b/1P1Np3/1P4B1/2r1N3 w - - 0 1)
Wirtanen, Erkki Aukusti
Shakhmaty v SSSR, 1948
#2
10 + 9
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Bxd3
- 2.Sf3#
- 1...Sd2
- 2.Rd5#
- 1...Sf2
- 2.Rd5#
- 1...Sc3
- 2.Qxb6#
- 1...Sg3
- 2.Rd5#
- 1...Sc5
- 2.Rd5#
- 1...Sg5
- 2.Bxf6#
- 1...Sxd6
- 2.Rd5#
- 2.Qxd6#
- 1...Bxd3
- Tries
- 1.Sb4?
- threat
- 2.Sf3#
- 2.Rd5#
- 1...Rxe1
- 2.Rd5#
- 1...Bxe1
- 2.Rd5#
- 1...Sxd6
- 2.Rd5#
- 2.Qxd6#
- 1...Bg5
- 2.Sf3#
- 1...Sg5
- 2.Bxf6#
- 1...f5
- 2.Sf3#
- 1...Rc5
- 2.Sf3#
- 1...Be2
- 2.Rd5#
- 1...Bc4
- 2.Sf3#
- 1...Sd2
- 2.Rd5#
- 1...Sf2
- 2.Rd5#
- 1...Sc3
- 2.Qxb6#
- 1...Sg3
- 2.Rd5#
- 1...Sc5
- 2.Rd5#
- 1...e2!
- threat
- 1.Sf4?
- threat
- 2.Sf3#
- 2.Se6#
- 2.Rd5#
- 1...Rxe1
- 2.Rd5#
- 1...Bxe1
- 2.Rd5#
- 1...Sxd6
- 2.Se6#
- 2.Rd5#
- 2.Qxd6#
- 1...Bg5
- 2.Sf3#
- 1...Sg5
- 2.Bxf6#
- 1...f5
- 2.Sf3#
- 1...Rc5
- 2.Sf3#
- 2.Se6#
- 1...Be2
- 2.Sxe2#
- 2.Se6#
- 2.Rd5#
- 1...Bc4
- 2.Sf3#
- 1...Sd2
- 2.Se6#
- 2.Rd5#
- 1...Sf2
- 2.Se6#
- 2.Rd5#
- 1...Sc3
- 2.Se6#
- 2.Qxb6#
- 1...Sg3
- 2.Se6#
- 2.Rd5#
- 1...Sc5
- 2.Rd5#
- 1...e2!
- threat
- 1.Qxb6+?
- 1...Sc5
- 2.Rxh4#
- 2.Rd5#
- 1...Rc5!
- 1...Sc5
- 1.Qc3+?
- 1...Sxc3
- 2.Bxb6#
- 1...Rxc3!
- 1...Sxc3
- 1.Qh7?
- threat
- 2.Qxe4#
- 1...Bxd3
- 2.Sf3#
- 1...Sxd6
- 2.Sf3#
- 2.Rd5#
- 1...Sd2
- 2.Rd5#
- 1...Sf2
- 2.Sf3#
- 2.Rd5#
- 1...Sc3
- 2.Sf3#
- 2.Bxb6#
- 1...Sg3
- 2.Sf3#
- 2.Rd5#
- 1...Sc5
- 2.Sf3#
- 2.Rd5#
- 1...Sg5
- 2.Bxf6#
- 1...f5!
- threat
- 1.Sb4?
- Keys
- 1.Qe7!
- threat
- 2.Qxe4#
- 1...Bxd3
- 2.Sf3#
- 1...Sxd6
- 2.Rd5#
- 2.Qxd6#
- 1...f5
- 2.Qe5#
- 1...Sd2
- 2.Rd5#
- 1...Sf2
- 2.Rd5#
- 1...Sc3
- 2.Bxb6#
- 1...Sg3
- 2.Rd5#
- 1...Sc5
- 2.Rd5#
- 1...Sg5
- 2.Qxf6#
- threat
- 1.Qe7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- B(f);SBLOCK,XS(E)::S(A)
- S(d);::R1(F)
- S(d);N_GUARD,S_CUTR(a)::QAB(H),XP(g)
- S(d);N_GUARD,S_CUTB(e)::B(I),XP(h)
- Tries
- Try
- S(E);
- Threat
- DUALS(2)
- Vars
- R(a);XS(A)::R1(F)
- B(e);XS(A)::R1(F)
- B(e);::S(A)
- S(d);N_GUARD,S_CUTB(e)::B(I),XP(h)
- P(h);::S(A)
- R(a);::S(A)
- B(f);::R1(F)
- B(f);::S(A)
- S(d);::R1(F)
- S(d);N_GUARD,S_CUTR(a)::QAB(H),XP(g)
- Refutation
- P(b);
- Try
- S(E);
- Threat
- DUALS(3)
- Vars
- R(a);XS(A)::R1(F)
- B(e);XS(A)::R1(F)
- B(e);::S(A)
- S(d);N_GUARD,S_CUTB(e)::B(I),XP(h)
- P(h);::S(A)
- B(f);::S(A)
- S(d);::R1(F)
- Refutation
- P(b);
- Try
- Q(H);CHECK,XP(g)
- Refutation
- R(a);P_SPINR(a)
- Try
- Q(H);CHECK
- Vars
- S(d);XQ(H)::B(I),XP(g)
- Refutation
- R(a);XQ(H)
- Try
- Q(H);
- Threat
- QAR1(H),XS(d)
- Vars
- B(f);SBLOCK,XS(E)::S(A)
- S(d);::R1(F)
- S(d);N_GUARD,S_CUTB(e)::B(I),XP(h)
- Refutation
- P(h);
- Try
- Actual
- Q(H);
- Threat
- QAR1(H),XS(d)
- Vars
- B(f);SBLOCK,XS(E)::S(A)
- P(h);N_GUARD::QAB1(H)
- S(d);::R1(F)
- S(d);N_GUARD,S_CUTR(a)::B(I),XP(g)
- S(d);N_GUARD,S_CUTB(e)::QAB(H),XP(h)
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).