MESON Chess Problem Database
Problem Display
PID: 59223 (8/5Qn1/2p3P1/2P4p/pP5K/2R1p3/R3P3/rkN5 w - - 0 1)
Madsen, Arthur Valdemar
5th Highly Comm., Brisbane Courier, 1921-1922
#2
9 + 7
SOLUTION
- SOUND
- Sets
- 1...Rxa2
- 2.Qxa2#
- 1...Sf5+
- 2.Qxf5#
- 1...Se6
- 2.Qf5#
- 1...Se8
- 2.Qf5#
- 1...a3
- 2.Qb3#
- 1...Rxa2
- Tries
- 1.Kg3?
- 1...Sf5+
- 2.Qxf5#
- 1...Rxa2
- 2.Qxa2#
- 1...Se6
- 2.Qf5#
- 1...Se8
- 2.Qf5#
- 1...a3
- 2.Qb3#
- 1...h4+!
- 1...Sf5+
- 1.Kh3?
- 1...Rxa2
- 2.Qxa2#
- 1...Sf5
- 2.Qxf5#
- 1...Se6
- 2.Qf5#
- 1...Se8
- 2.Qf5#
- 1...a3
- 2.Qb3#
- 1...h4!
- 1...Rxa2
- 1.Sd3?
- threat
- 2.Rb2#
- 2.Rc1#
- 1...Rxa2
- 2.Rc1#
- 2.Qf1#
- 1...Se6
- 2.Rb2#
- 1...a3
- 2.Rc1#
- 2.Qb3#
- 1...Sf5+!
- threat
- 1.Rxa1+?
- 1...Kxa1
- 2.Qa2#
- 1...Kb2!
- 1...Kxa1
- 1.Rcc2?
- threat
- 2.Rab2#
- 1...Rxa2
- 2.Qxa2#
- 1...a3
- 2.Qb3#
- 1...Sf5+!
- threat
- 1.Rb3+?
- 1...Kxc1
- 2.Qf1#
- 1...axb3!
- 1...Kxc1
- 1.Qc4?
- threat
- 2.Qd3#
- 2.Qe4#
- 1...Rxa2
- 2.Qxa2#
- 1...Sf5+!
- threat
- 1.Qd5?
- threat
- 2.Qe4#
- 2.Qd3#
- 1...Sf5+
- 2.Qxf5#
- 1...Rxa2
- 2.Qxa2#
- 1...cxd5!
- threat
- 1.Qe6?
- threat
- 2.Qe4#
- 1...Sf5+
- 2.Qxf5#
- 1...Rxa2
- 2.Qxa2#
- 1...Sxe6!
- threat
- 1.Qf3?
- threat
- 2.Qe4#
- 1...Sf5+
- 2.Qxf5#
- 1...Rxa2!
- threat
- 1.Qf4?
- threat
- 2.Qe4#
- 1...Sf5+
- 2.Qxf5#
- 1...Rxa2!
- threat
- 1.Qd7?
- threat
- 2.Qd3#
- 1...Sf5+
- 2.Qxf5#
- 1...Rxa2!
- threat
- 1.b5?
- 1...Sf5+
- 2.Qxf5#
- 1...Rxa2
- 2.Qxa2#
- 1...a3
- 2.Qb3#
- 1...Se6
- 2.Qf5#
- 1...Se8
- 2.Qf5#
- 1...cxb5!
- 1...Sf5+
- 1.Kg3?
- Keys
- 1.Qf1!
- 1...Sf5+
- 2.Qxf5#
- 1...Rxa2
- 2.Sd3#
- 1...Se6
- 2.Qf5#
- 1...Se8
- 2.Qf5#
- 1...a3
- 2.Rb3#
- 1...Sf5+
- 1.Qf1!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 2
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- R(a);OGATE,XR(B)::QAB1(I),XR(a)
- S(g);CHECK,N_GUARD::QAB(I),XS(g)
- S(g);N_GUARD::QAB(I)
- P(d);N_GUARD::QAR2(I)
- Tries
- Try
- K(F);S_FLIGHT
- Vars
- S(g);CHECK,N_GUARD::QAB(I),XS(g)
- R(a);OGATE,XR(B)::QAB1(I),XR(a)
- S(g);N_GUARD::QAB(I)
- P(d);N_GUARD::QAR2(I)
- Refutation
- P(e);CHECK
- Try
- K(F);P-FLIGHT
- Vars
- R(a);OGATE,XR(B)::QAB1(I),XR(a)
- S(g);N_GUARD::QAB(I),XS(g)
- S(g);N_GUARD::QAB(I)
- P(d);N_GUARD::QAR2(I)
- Refutation
- P(e);
- Try
- S(A);
- Threat
- DUALS(2)
- Vars
- S(g);::R1(B)
- Refutation
- S(g);CHECK
- Try
- R(B);CHECK,XR(a)
- Vars
- K(b);P-FLIGHT,XR(B)::QAR1(I)
- Refutation
- K(b);P-FLIGHT
- Try
- R(D);
- Threat
- R1(B)
- Vars
- R(a);OGATE,XR(B)::QAB1(I),XR(a)
- P(d);N_GUARD::QAR2(I)
- Refutation
- S(g);CHECK
- Try
- R(D);CHECK
- Vars
- K(b);P-FLIGHT,XS(A)::QAR(I)
- Refutation
- P(d);XR(D)
- Try
- Q(I);
- Threat
- DUALS(2)
- Vars
- R(a);OGATE,XR(B)::QAB1(I),XR(a)
- Refutation
- S(g);CHECK
- Try
- Q(I);
- Threat
- DUALS(2)
- Vars
- S(g);CHECK,N_GUARD::QAB(I),XS(g)
- R(a);OGATE,XR(B)::QAB1(I),XR(a)
- Refutation
- P(f);XQ(I)
- Try
- Q(I);
- Threat
- QAB(I)
- Vars
- S(g);CHECK,N_GUARD::QAB(I),XS(g)
- R(a);OGATE,XR(B)::QAB1(I),XR(a)
- Refutation
- S(g);XQ(I)
- Try
- Q(I);
- Threat
- QAB(I)
- Vars
- S(g);CHECK,N_GUARD::QAB(I),XS(g)
- Refutation
- R(a);XR(B)
- Try
- Q(I);
- Threat
- QAB(I)
- Vars
- S(g);CHECK,N_GUARD::QAB(I),XS(g)
- Refutation
- R(a);XR(B)
- Try
- Q(I);
- Threat
- QAB(I)
- Vars
- S(g);CHECK,N_GUARD::QAB(I),XS(g)
- Refutation
- R(a);XR(B)
- Try
- P(E);
- Vars
- S(g);CHECK,N_GUARD::QAB(I),XS(g)
- R(a);OGATE,XR(B)::QAB1(I),XR(a)
- P(d);N_GUARD::QAR2(I)
- S(g);N_GUARD::QAB(I)
- Refutation
- P(f);XP(E)
- Try
- Actual
- Q(I);
- Vars
- S(g);CHECK,N_GUARD::QAB(I),XS(g)
- R(a);SBLOCK,XR(B)::QAR(I)+S(A)
- S(g);N_GUARD::QAB(I)
- P(d);N_GUARD::R(D)
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).