MESON Chess Problem Database
Problem Display
PID: 200327 (3K4/1Qp5/4p1N1/2p1PRBb/p1Bk2r1/1n1Pp3/8/2R5 w - - 0 1)
Wirtanen, Erkki Aukusti
1st Comm., Suomen Shakki, 1976
#2
9 + 9
SOLUTION
- SOUND
- Sets
- 1...Rg1
- 2.Rf4#
- 2.Qe4#
- 1...Rg2
- 2.Rf4#
- 2.Qe4#
- 1...Rg3
- 2.Rf4#
- 2.Qe4#
- 1...Re4
- 2.Qxe4#
- 1...Rf4
- 2.Rxf4#
- 1...Rxg5
- 2.Rf4#
- 2.Qe4#
- 1...Sa1
- 2.Qb2#
- 1...Sxc1
- 2.Qb2#
- 1...Sd2
- 2.Qb2#
- 1...Sa5
- 2.Qb2#
- 1...exf5
- 2.Qd5#
- 1...c6
- 2.Qd7#
- 1...Rg1
- Tries
- 1.Sf4?
- threat
- 2.Se2#
- 2.Sxe6#
- 2.Qe4#
- 1...Rxg5
- 2.Sxe6#
- 2.Qe4#
- 1...Sxc1
- 2.Qb2#
- 1...exf5
- 2.Qd5#
- 1...e2
- 2.Sxe2#
- 2.Sxe6#
- 2.Qe4#
- 1...Rh4
- 2.Sxe6#
- 2.Qe4#
- 1...Rg1
- 2.Sxe6#
- 2.Qe4#
- 1...Rg2
- 2.Sxe6#
- 2.Qe4#
- 1...Rg3
- 2.Sxe6#
- 2.Qe4#
- 1...Bf7
- 2.Se2#
- 2.Qe4#
- 1...Sd2
- 2.Se2#
- 2.Sxe6#
- 2.Qb2#
- 1...c6
- 2.Se2#
- 2.Sxe6#
- 2.Qd7#
- 1...Rxf4!
- threat
- 1.Se7?
- threat
- 2.Sc6#
- 1...Sxc1
- 2.Qb2#
- 1...Sa5
- 2.Qb2#
- 1...c6
- 2.Sxc6#
- 2.Qd7#
- 1...Be8!
- threat
- 1.Sf8?
- threat
- 2.Sxe6#
- 1...Sxc1
- 2.Qb2#
- 1...exf5
- 2.Qd5#
- 1...Bf7!
- threat
- 1.Rf3?
- threat
- 2.Bxe3#
- 1...Rxg5
- 2.Rf4#
- 2.Qe4#
- 1...Sxc1
- 2.Qb2#
- 1...Re4
- 2.Qxe4#
- 1...Rf4
- 2.Rxf4#
- 1...e2
- 2.Be3#
- 1...Bxg6!
- threat
- 1.Rf7?
- threat
- 2.Rd7#
- 1...Sxc1
- 2.Qb2#
- 1...Bxg6!
- threat
- 1.Qf3?
- threat
- 2.Bxe3#
- 2.Qxe3#
- 1...Rxg5
- 2.Rf4#
- 2.Qe4#
- 2.Qf4#
- 1...Rg3
- 2.Bxe3#
- 2.Rf4#
- 2.Qe4#
- 2.Qf4#
- 1...Re4
- 2.Qxe4#
- 1...Rf4
- 2.Rxf4#
- 2.Qxf4#
- 1...e2
- 2.Be3#
- 2.Qf2#
- 2.Qe3#
- 1...Sxc1!
- threat
- 1.Qxb3?
- threat
- 2.Qb2#
- 2.Qc3#
- 1...Rg2
- 2.Rf4#
- 2.Qc3#
- 1...a3
- 2.Qc3#
- 1...axb3!
- threat
- 1.Qb4?
- threat
- 2.Qc3#
- 1...Sxc1
- 2.Qb2#
- 1...cxb4!
- threat
- 1.Qb5?
- threat
- 2.Qd7#
- 1...Sxc1
- 2.Qb2#
- 1...c6!
- threat
- 1.Sf4?
- Keys
- 1.Bf4!
- threat
- 2.Qe4#
- 1...Rxf4
- 2.Rxf4#
- 1...Sxc1
- 2.Qb2#
- 1...exf5
- 2.Qd5#
- 1...Sd2
- 2.Qb2#
- 1...c6
- 2.Qd7#
- threat
- 1.Bf4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 3
- Sets
- R(e);N_GUARD::QAR1(H),XR(e)
- R(e);N_GUARD::R(E),XR(e)
- S(a);OGATE::QAB(H)
- S(a);OGATE,XR(A)::QAB(H)
- P(h);N_GUARD,XR(E)::QAR1(H)
- P(i);OGATE::QAR(H)
- Tries
- Try
- S(G);
- Threat
- DUALS(3)
- Vars
- S(a);OGATE,XR(A)::QAB(H)
- P(h);N_GUARD,XR(E)::QAR1(H)
- Refutation
- R(e);XS(G)
- Try
- S(G);
- Threat
- S(G)
- Vars
- S(a);OGATE,XR(A)::QAB(H)
- S(a);OGATE::QAB(H)
- Refutation
- B(g);
- Try
- S(G);
- Threat
- S(G),XP(h)
- Vars
- S(a);OGATE,XR(A)::QAB(H)
- P(h);N_GUARD,XR(E)::QAR1(H)
- Refutation
- B(g);
- Try
- R(E);
- Threat
- B(F),XP(b)
- Vars
- S(a);OGATE,XR(A)::QAB(H)
- R(e);N_GUARD::QAR1(H),XR(e)
- R(e);N_GUARD::R(E),XR(e)
- P(b);::B(F)
- Refutation
- B(g);XS(G)
- Try
- R(E);
- Threat
- R(E)
- Vars
- S(a);OGATE,XR(A)::QAB(H)
- Refutation
- B(g);XS(G)
- Try
- Q(H);
- Threat
- DUALS(2)
- Vars
- R(e);N_GUARD::QAR1(H),XR(e)
- Refutation
- S(a);XR(A)
- Try
- Q(H);XS(a)
- Threat
- DUALS(2)
- Vars
- P(c);::QAB1(H)
- Refutation
- P(c);XQ(H)
- Try
- Q(H);
- Threat
- QAB1(H)
- Vars
- S(a);OGATE,XR(A)::QAB(H)
- Refutation
- P(f);XQ(H)
- Try
- Q(H);
- Threat
- QAR(H)
- Vars
- S(a);OGATE,XR(A)::QAB(H)
- Refutation
- P(i);
- Try
- Actual
- B(F);
- Threat
- QAR1(H)
- Vars
- R(e);OGATE,XB(F)::R(E),XR(e)
- S(a);OGATE,XR(A)::QAB(H)
- P(h);N_GUARD,XR(E)::QAR1(H)
- S(a);OGATE::QAB(H)
- P(i);OGATE::QAR(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).