MESON Chess Problem Database
Problem Display
PID: 247491 (6B1/4p1n1/5b2/4k3/4PR1r/B7/1KR1N2N/2Q2n1q w - - 0 1)
Kovacevic, Marjan
Die Schwalbe, 2020
#2
9 + 7
SOLUTION
- SOUND
- Sets
- 1...Qf3
- 2.Sxf3#
- 1...Qg1
- 2.Sf3#
- 1...Rh3
- 2.Sg4#
- 1...Rxf4
- 2.Qxf4#
- 1...Rg4
- 2.Sxg4#
- 1...Rh5
- 2.Sg4#
- 1...Rh6
- 2.Sg4#
- 1...Rh7
- 2.Sg4#
- 1...Rh8
- 2.Sg4#
- 1...Qf3
- Tries
- 1.Rd2?
- threat
- 2.Rd5#
- 2.Qc3#
- 2.Qc5#
- 2.Qc7#
- 1...Qxe4
- 2.Qc7#
- 1...Sxd2
- 2.Qc3#
- 2.Qc5#
- 2.Qc7#
- 1...Qf3
- 2.Sxf3#
- 2.Rd5#
- 2.Qc5#
- 2.Qc7#
- 1...Qg1
- 2.Sf3#
- 2.Rd5#
- 2.Qc7#
- 1...Rh3
- 2.Sg4#
- 2.Rd5#
- 2.Qc5#
- 2.Qc7#
- 1...Se3
- 2.Qc3#
- 2.Qc7#
- 1...Sf5
- 2.Rd5#
- 2.Qc5#
- 1...Se6
- 2.Rd5#
- 1...Se8
- 2.Rd5#
- 2.Qc3#
- 2.Qc5#
- 1...e6
- 2.Bd6#
- 2.Qc3#
- 2.Qc5#
- 2.Qc7#
- 1...Rxf4!
- threat
- 1.Rc6?
- threat
- 2.Qc3#
- 2.Qc5#
- 1...Rxf4
- 2.Qxf4#
- 1...Qf3
- 2.Sxf3#
- 2.Qc5#
- 1...Qg1
- 2.Sf3#
- 1...Rh3
- 2.Sg4#
- 2.Qc5#
- 1...Se3
- 2.Qc3#
- 1...Sf5
- 2.Re6#
- 2.Qc5#
- 1...Se6
- 2.Rxe6#
- 1...Qxe4!
- threat
- 1.Rc8?
- threat
- 2.Qc3#
- 2.Qc5#
- 2.Qc7#
- 1...Qxe4
- 2.Qc7#
- 1...Rxf4
- 2.Qxf4#
- 1...Qf3
- 2.Sxf3#
- 2.Qc5#
- 2.Qc7#
- 1...Qg1
- 2.Sf3#
- 2.Qc7#
- 1...Rh3
- 2.Sg4#
- 2.Qc5#
- 2.Qc7#
- 1...Se3
- 2.Qc3#
- 2.Qc7#
- 1...Sf5
- 2.Qc5#
- 1...Se8
- 2.Qc3#
- 2.Qc5#
- 1...Se6!
- threat
- 1.Qe3?
- threat
- 2.Qd4#
- 2.Qc5#
- 2.Qc3#
- 1...Qxe4
- 2.Sf3#
- 2.Qxe4#
- 1...Rxf4
- 2.Qd4#
- 2.Qxf4#
- 1...Se6
- 2.Rf5#
- 1...Qf3
- 2.Sxf3#
- 2.Qd4#
- 2.Qc5#
- 1...Qg1
- 2.Sf3#
- 1...Rh3
- 2.Sg4#
- 2.Qd4#
- 2.Qc5#
- 1...Sf5
- 2.Rxf5#
- 2.Qc5#
- 1...Sxe3!
- threat
- 1.Rd2?
- Keys
- 1.Rc4!
- threat
- 2.Qc3#
- 1...Qxe4
- 2.Rcxe4#
- 1...Qf3
- 2.Sxf3#
- 1...Qg1
- 2.Sf3#
- 1...Rh3
- 2.Sg4#
- 1...Sf5
- 2.Rxf5#
- 1...Se6
- 2.Rf5#
- threat
- 1.Rc4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 6
- Sets
- Q(b);N_GUARD::S(E),XQ(b)
- Q(b);N_GUARD::S(E)
- R(c);N_GUARD::S(E)
- R(c);OGATE,XR(H)::QAB1(A),XR(c)
- R(c);N_GUARD::S(E),XR(c)
- Tries
- Try
- R(C);
- Threat
- DUALS(4)
- Vars
- Q(b);XP(G)::QAB(A)
- S(g);::R1(C)
- Refutation
- R(c);XR(H)
- Try
- R(C);
- Threat
- DUALS(2)
- Vars
- R(c);OGATE,XR(H)::QAB1(A),XR(c)
- Q(b);N_GUARD::S(E)
- S(a);::QAB(A)
- S(g);N_GUARD::R1(C),XS(g)
- Refutation
- Q(b);XP(G)
- Try
- R(C);
- Threat
- DUALS(3)
- Vars
- Q(b);XP(G)::QAB(A)
- R(c);OGATE,XR(H)::QAB1(A),XR(c)
- S(g);::QAR2(A)
- Refutation
- S(g);
- Try
- Q(A);
- Threat
- DUALS(3)
- Vars
- S(g);N_GUARD::R1(H)
- Q(b);N_GUARD::S(E)
- Refutation
- S(a);XQ(A)
- Try
- Actual
- R(C);
- Threat
- QAB(A)
- Vars
- Q(b);OGATE,XP(G)::R1(C),XQ(b)
- Q(b);N_GUARD::S(E),XQ(b)
- Q(b);N_GUARD::S(E)
- R(c);N_GUARD::S(E)
- S(g);N_GUARD::R1(H),XS(g)
- S(g);N_GUARD::R1(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).