MESON Chess Problem Database
Problem Display
PID: 274335 (K4n2/4R2B/2N5/1PPkB3/pRp2pr1/rn6/4P2b/3Nq1Q1 w - - 0 1)
Wirtanen, Erkki Aukusti
4th Comm., Zurcher Woche, 1963
#2
11 + 10
| 15601 | Albrecht-Leiss-Degener Collection | 2023 |
SOLUTION
- SOUND
- Sets
- 1...Qc3
- 2.Sxc3#
- 1...Qxb4
- 2.Sxb4#
- 1...Qh4
- 2.Sc3#
- 1...Qf1
- 2.Sc3#
- 1...Qxe2
- 2.Sc3#
- 1...Sa1
- 2.Qd4#
- 1...Sc1
- 2.Qd4#
- 1...Sd2
- 2.Qd4#
- 1...Sd4
- 2.Qxd4#
- 1...Sa5
- 2.Qd4#
- 1...Sxc5
- 2.Qd4#
- 1...Se6
- 2.Rd7#
- 1...c3
- 2.Be4#
- 1...Qc3
- Tries
- 1.Ba1?
- threat
- 2.Be4#
- 2.Re5#
- 1...Qxg1
- 2.Re5#
- 1...Qxe2
- 2.Sc3#
- 1...Rxg1
- 2.Re5#
- 1...Bxg1
- 2.Re5#
- 1...Sxc5
- 2.Qd4#
- 1...Sxh7
- 2.Re5#
- 1...Qf2
- 2.Re5#
- 1...Sd4
- 2.Re5#
- 2.Qxd4#
- 1...Qc3
- 2.Sxc3#
- 2.Be4#
- 1...Rg5
- 2.Be4#
- 2.Qxg5#
- 1...Rg6
- 2.Re5#
- 1...Sd2
- 2.Re5#
- 2.Qd4#
- 1...Se6
- 2.Rd7#
- 1...Sg6
- 2.Bg8#
- 1...Sd7
- 2.Be4#
- 1...f3!
- threat
- 1.Bb2?
- threat
- 2.Be4#
- 2.Re5#
- 1...Qxg1
- 2.Re5#
- 1...Qxe2
- 2.Sc3#
- 1...Rxg1
- 2.Re5#
- 1...Bxg1
- 2.Re5#
- 1...Sxc5
- 2.Qd4#
- 1...Sxh7
- 2.Re5#
- 1...Qf2
- 2.Re5#
- 1...Sd4
- 2.Re5#
- 2.Qxd4#
- 1...Qc3
- 2.Sxc3#
- 2.Be4#
- 1...Rg5
- 2.Be4#
- 2.Qxg5#
- 1...Rg6
- 2.Re5#
- 1...Sd2
- 2.Re5#
- 2.Qd4#
- 1...Se6
- 2.Rd7#
- 1...Sg6
- 2.Bg8#
- 1...Sd7
- 2.Be4#
- 1...f3!
- threat
- 1.Bd4?
- threat
- 2.Be4#
- 2.Re5#
- 1...Qxe2
- 2.Sc3#
- 1...Sxd4
- 2.Re5#
- 2.Qxd4#
- 1...Sxh7
- 2.Re5#
- 1...f3
- 2.Se3#
- 1...Rg5
- 2.Be4#
- 2.Qxg5#
- 1...Rg6
- 2.Re5#
- 1...Sd2
- 2.Re5#
- 1...Se6
- 2.Rd7#
- 1...Sg6
- 2.Bg8#
- 1...Sd7
- 2.Be4#
- 1...Sxc5!
- threat
- 1.Bd6?
- threat
- 2.Be4#
- 2.Re5#
- 1...Qxe2
- 2.Sc3#
- 1...Sxc5
- 2.Qd4#
- 2.Qxc5#
- 1...Sxh7
- 2.Re5#
- 1...f3
- 2.Se3#
- 1...Qc3
- 2.Sxc3#
- 2.Be4#
- 1...Rg5
- 2.Be4#
- 2.Qxg5#
- 1...Rg6
- 2.Re5#
- 1...Sd2
- 2.Re5#
- 2.Qd4#
- 1...Sg6
- 2.Bg8#
- 1...Sd7
- 2.Be4#
- 1...Se6!
- threat
- 1.Bf6?
- threat
- 2.Be4#
- 2.Re5#
- 1...Qxg1
- 2.Re5#
- 1...Qxe2
- 2.Sc3#
- 1...Rxg1
- 2.Re5#
- 1...Bxg1
- 2.Re5#
- 1...Sxc5
- 2.Qd4#
- 1...Sxh7
- 2.Re5#
- 1...Qf2
- 2.Re5#
- 1...Sd4
- 2.Re5#
- 2.Qxd4#
- 1...Qc3
- 2.Sxc3#
- 2.Be4#
- 1...Rg5
- 2.Be4#
- 2.Qxg5#
- 1...Rg6
- 2.Re5#
- 1...Sd2
- 2.Re5#
- 2.Qd4#
- 1...Se6
- 2.Rd7#
- 1...Sg6
- 2.Bg8#
- 1...Sd7
- 2.Be4#
- 1...f3!
- threat
- 1.Bc7?
- threat
- 2.Be4#
- 2.Re5#
- 1...Qxg1
- 2.Re5#
- 1...Qxe2
- 2.Sc3#
- 1...Rxg1
- 2.Re5#
- 1...Bxg1
- 2.Re5#
- 1...Sxc5
- 2.Re5#
- 2.Qd4#
- 1...Sxh7
- 2.Re5#
- 1...Qf2
- 2.Re5#
- 1...Sd4
- 2.Re5#
- 2.Qxd4#
- 1...Qc3
- 2.Sxc3#
- 2.Be4#
- 1...Rg5
- 2.Be4#
- 2.Qxg5#
- 1...Rg6
- 2.Re5#
- 1...Sd2
- 2.Re5#
- 2.Qd4#
- 1...Se6
- 2.Rd7#
- 1...Sg6
- 2.Bg8#
- 1...Sd7
- 2.Be4#
- 1...f3!
- threat
- 1.Bg7?
- threat
- 2.Be4#
- 2.Re5#
- 1...Qxg1
- 2.Re5#
- 1...Qxe2
- 2.Sc3#
- 1...Rxg1
- 2.Re5#
- 1...Bxg1
- 2.Re5#
- 1...Sxc5
- 2.Qd4#
- 1...Sxh7
- 2.Re5#
- 1...Qf2
- 2.Re5#
- 1...Sd4
- 2.Re5#
- 2.Qxd4#
- 1...Qc3
- 2.Sxc3#
- 2.Be4#
- 1...Rg5
- 2.Be4#
- 2.Qxg5#
- 1...Rg6
- 2.Re5#
- 1...Sd2
- 2.Re5#
- 2.Qd4#
- 1...Se6
- 2.Rd7#
- 1...Sg6
- 2.Bg8#
- 1...Sd7
- 2.Be4#
- 2.Bg8#
- 1...f3!
- threat
- 1.Bb8?
- threat
- 2.Be4#
- 2.Re5#
- 1...Qxg1
- 2.Re5#
- 1...Qxe2
- 2.Sc3#
- 1...Rxg1
- 2.Re5#
- 1...Bxg1
- 2.Re5#
- 1...Sxc5
- 2.Re5#
- 2.Qd4#
- 1...Sxh7
- 2.Re5#
- 1...Qf2
- 2.Re5#
- 1...Sd4
- 2.Re5#
- 2.Qxd4#
- 1...Qc3
- 2.Sxc3#
- 2.Be4#
- 1...Rg5
- 2.Be4#
- 2.Qxg5#
- 1...Rg6
- 2.Re5#
- 1...Sd2
- 2.Re5#
- 2.Qd4#
- 1...Se6
- 2.Rd7#
- 1...Sg6
- 2.Bg8#
- 1...Sd7
- 2.Be4#
- 1...f3!
- threat
- 1.Bh8?
- threat
- 2.Be4#
- 2.Re5#
- 1...Qxg1
- 2.Re5#
- 1...Qxe2
- 2.Sc3#
- 1...Rxg1
- 2.Re5#
- 1...Bxg1
- 2.Re5#
- 1...Sxc5
- 2.Qd4#
- 1...Sxh7
- 2.Re5#
- 1...Qf2
- 2.Re5#
- 1...Sd4
- 2.Re5#
- 2.Qxd4#
- 1...Qc3
- 2.Sxc3#
- 2.Be4#
- 1...Rg5
- 2.Be4#
- 2.Qxg5#
- 1...Rg6
- 2.Re5#
- 1...Sd2
- 2.Re5#
- 2.Qd4#
- 1...Se6
- 2.Rd7#
- 1...Sg6
- 2.Bg8#
- 1...Sd7
- 2.Be4#
- 1...f3!
- threat
- 1.Rd7+?
- 1...Ke6
- 2.Qxg4#
- 1...Sxd7!
- 1...Ke6
- 1.e4+?
- 1...Qxe4
- 2.Sc3#
- 1...fxe4 ep!
- 1...Qxe4
- 1.Ba1?
- Keys
- 1.Bxf4!
- threat
- 2.Be4#
- 2.Re5#
- 1...Qxg1
- 2.Re5#
- 1...Qxe2
- 2.Sc3#
- 1...Rxg1
- 2.Re5#
- 1...Rxf4
- 2.Re5#
- 1...Bxg1
- 2.Re5#
- 1...Bxf4
- 2.Be4#
- 1...Sxc5
- 2.Qd4#
- 1...Sxh7
- 2.Re5#
- 1...Qf2
- 2.Re5#
- 1...Sd4
- 2.Re5#
- 2.Qxd4#
- 1...Qc3
- 2.Sxc3#
- 2.Be4#
- 2.e4#
- 1...Rg5
- 2.Be4#
- 2.Qxg5#
- 1...Rg6
- 2.Re5#
- 1...Sd2
- 2.Re5#
- 2.Qd4#
- 1...Se6
- 2.Rd7#
- 1...Sg6
- 2.Bg8#
- 1...Sd7
- 2.Be4#
- threat
- 1.Bxf4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 10
- REMOVED MATES = 10
- Sets
- Q(a);N_GUARD::S(A),XQ(a)
- Q(a);XR(D)::S(H),XQ(a)
- Q(a);N_GUARD::S(A)
- Q(a);N_GUARD,XP(C)::S(A)
- S(d);N_GUARD::QAR1(B)
- S(d);N_GUARD::QAR1(B),XS(d)
- S(d);N_GUARD,XP(F)::QAR1(B)
- S(j);N_GUARD,SBLOCK::R(I)
- P(f);::B(J)
- Tries
- Try
- B(G);
- Threat
- DUALS(2)
- Vars
- Q(a);XQ(B)::R1(I)
- Q(a);N_GUARD,XP(C)::S(A)
- R(h);XQ(B)::R1(I)
- B(b);XQ(B)::R1(I)
- S(d);N_GUARD,XP(F)::QAR1(B)
- S(j);XB(J)::R1(I)
- Q(a);::R1(I)
- R(h);::R1(I)
- S(j);N_GUARD,SBLOCK::R(I)
- S(j);N_GUARD,S_CUTR(h)::B(J)
- S(j);::B(J)
- Refutation
- P(g);
- Try
- B(G);
- Threat
- DUALS(2)
- Vars
- Q(a);XQ(B)::R1(I)
- Q(a);N_GUARD,XP(C)::S(A)
- R(h);XQ(B)::R1(I)
- B(b);XQ(B)::R1(I)
- S(d);N_GUARD,XP(F)::QAR1(B)
- S(j);XB(J)::R1(I)
- Q(a);::R1(I)
- R(h);::R1(I)
- S(j);N_GUARD,SBLOCK::R(I)
- S(j);N_GUARD,S_CUTR(h)::B(J)
- S(j);::B(J)
- Refutation
- P(g);
- Try
- B(G);
- Threat
- DUALS(2)
- Vars
- Q(a);N_GUARD,XP(C)::S(A)
- S(j);XB(J)::R1(I)
- P(g);N_GUARD::S(A)
- R(h);::R1(I)
- S(d);::R1(I)
- S(j);N_GUARD,SBLOCK::R(I)
- S(j);N_GUARD,S_CUTR(h)::B(J)
- S(j);::B(J)
- Refutation
- S(d);XP(F)
- Try
- B(G);
- Threat
- DUALS(2)
- Vars
- Q(a);N_GUARD,XP(C)::S(A)
- S(j);XB(J)::R1(I)
- P(g);N_GUARD::S(A)
- R(h);::R1(I)
- S(j);N_GUARD,S_CUTR(h)::B(J)
- S(j);::B(J)
- Refutation
- S(j);
- Try
- B(G);
- Threat
- DUALS(2)
- Vars
- Q(a);XQ(B)::R1(I)
- Q(a);N_GUARD,XP(C)::S(A)
- R(h);XQ(B)::R1(I)
- B(b);XQ(B)::R1(I)
- S(d);N_GUARD,XP(F)::QAR1(B)
- S(j);XB(J)::R1(I)
- Q(a);::R1(I)
- R(h);::R1(I)
- S(j);N_GUARD,SBLOCK::R(I)
- S(j);N_GUARD,S_CUTR(h)::B(J)
- S(j);::B(J)
- Refutation
- P(g);
- Try
- B(G);
- Threat
- DUALS(2)
- Vars
- Q(a);XQ(B)::R1(I)
- Q(a);N_GUARD,XP(C)::S(A)
- R(h);XQ(B)::R1(I)
- B(b);XQ(B)::R1(I)
- S(j);XB(J)::R1(I)
- Q(a);::R1(I)
- R(h);::R1(I)
- S(j);N_GUARD,SBLOCK::R(I)
- S(j);N_GUARD,S_CUTR(h)::B(J)
- S(j);::B(J)
- Refutation
- P(g);
- Try
- B(G);
- Threat
- DUALS(2)
- Vars
- Q(a);XQ(B)::R1(I)
- Q(a);N_GUARD,XP(C)::S(A)
- R(h);XQ(B)::R1(I)
- B(b);XQ(B)::R1(I)
- S(d);N_GUARD,XP(F)::QAR1(B)
- S(j);XB(J)::R1(I)
- Q(a);::R1(I)
- R(h);::R1(I)
- S(j);N_GUARD,SBLOCK::R(I)
- S(j);N_GUARD::B(J)
- Refutation
- P(g);
- Try
- B(G);
- Threat
- DUALS(2)
- Vars
- Q(a);XQ(B)::R1(I)
- Q(a);N_GUARD,XP(C)::S(A)
- R(h);XQ(B)::R1(I)
- B(b);XQ(B)::R1(I)
- S(j);XB(J)::R1(I)
- Q(a);::R1(I)
- R(h);::R1(I)
- S(j);N_GUARD,SBLOCK::R(I)
- S(j);N_GUARD,S_CUTR(h)::B(J)
- S(j);::B(J)
- Refutation
- P(g);
- Try
- B(G);
- Threat
- DUALS(2)
- Vars
- Q(a);XQ(B)::R1(I)
- Q(a);N_GUARD,XP(C)::S(A)
- R(h);XQ(B)::R1(I)
- B(b);XQ(B)::R1(I)
- S(d);N_GUARD,XP(F)::QAR1(B)
- S(j);XB(J)::R1(I)
- Q(a);::R1(I)
- R(h);::R1(I)
- S(j);N_GUARD,SBLOCK::R(I)
- S(j);N_GUARD,S_CUTR(h)::B(J)
- S(j);::B(J)
- Refutation
- P(g);
- Try
- R(I);CHECK
- Vars
- K(i);N_GUARD,S_CUTS(j),S_FLIGHT::QAB(B),XR(h)
- Refutation
- S(j);XR(I)
- Try
- P(C);CHECK
- Vars
- Q(a);XP(C)::S(A)
- Refutation
- P(g);EP,XP(C)
- Try
- Actual
- B(G);XP(g)
- Threat
- DUALS(2)
- Vars
- Q(a);XQ(B)::R1(I)
- Q(a);N_GUARD,XP(C)::S(A)
- R(h);XQ(B)::R1(I)
- R(h);XB(G)::R1(I)
- B(b);XQ(B)::R1(I)
- B(b);XB(G)::B(J)
- S(d);N_GUARD,XP(F)::QAR1(B)
- S(j);XB(J)::R1(I)
- Q(a);::R1(I)
- R(h);::R1(I)
- S(j);N_GUARD,SBLOCK::R(I)
- S(j);N_GUARD,S_CUTR(h)::B(J)
- S(j);::B(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).