MESON Chess Problem Database
Problem Display
PID: 226997 (6N1/Rq6/b1Q3P1/1p3B1k/1p3P1p/1P4np/3p3P/3K2R1 w - - 0 1)
Johner, Hans
Neue Zurcher Zeitung, 1944
#2
10 + 9
| 15257 | Kunstwerke auf 64 Feldern (1922-1966) (Ott, Kummer, Schudel) | 1968 |
SOLUTION
- SOUND
- Sets
- 1...Qxc6
- 2.Rh7#
- 1...Qa8
- 2.Rh7#
- 1...Qc8
- 2.Rh7#
- 2.Qf3#
- 1...Qb6
- 2.Rh7#
- 2.Qf3#
- 1...Qxa7
- 2.Qf3#
- 1...Qc7
- 2.Qf3#
- 1...Qd7
- 2.Qf3#
- 1...Qe7
- 2.Qf3#
- 1...Qf7
- 2.Qf3#
- 1...Qg7
- 2.Qf3#
- 1...Qh7
- 2.Rxh7#
- 2.Qf3#
- 1...Qb8
- 2.Rh7#
- 2.Qf3#
- 1...Sf1
- 2.Bg4#
- 2.Rg5#
- 1...Sh1
- 2.Bg4#
- 2.Rg5#
- 1...Se2
- 2.Bg4#
- 2.Rg5#
- 1...Se4
- 2.Bg4#
- 1...Sxf5
- 2.Rg5#
- 1...Qxc6
- Tries
- 1.Rg2?
- 1...Qxc6
- 2.Rh7#
- 1...Qxa7
- 2.Qf3#
- 1...Sxf5
- 2.Rg5#
- 1...Qa8
- 2.Rh7#
- 1...Qc8
- 2.Rh7#
- 2.Qf3#
- 1...Qb6
- 2.Rh7#
- 2.Qf3#
- 1...Qc7
- 2.Qf3#
- 1...Qd7
- 2.Qf3#
- 1...Qe7
- 2.Qf3#
- 1...Qf7
- 2.Qf3#
- 1...Qg7
- 2.Qf3#
- 1...Qh7
- 2.Rxh7#
- 2.Qf3#
- 1...Qb8
- 2.Rh7#
- 2.Qf3#
- 1...Sf1
- 2.Bg4#
- 2.Rg5#
- 1...Sh1
- 2.Bg4#
- 2.Rg5#
- 1...Se2
- 2.Bg4#
- 2.Rg5#
- 1...Se4
- 2.Bg4#
- 1...hxg2!
- 1...Qxc6
- 1.Rxg3?
- threat
- 2.Bg4#
- 2.Rg5#
- 1...Qxc6
- 2.Rg5#
- 2.Rh7#
- 1...Qc8
- 2.Rg5#
- 2.Rh7#
- 2.Qf3#
- 1...Qd7
- 2.Rg5#
- 2.Qf3#
- 1...Qe7
- 2.Bg4#
- 2.Qf3#
- 1...hxg3!
- threat
- 1.Rxb7?
- threat
- 2.Rh7#
- 2.Qf3#
- 1...Sxf5
- 2.Rg5#
- 2.Qf3#
- 1...Se4
- 2.Bg4#
- 2.Rh7#
- 1...Bxb7!
- threat
- 1.Qg2?
- 1...Qf3+
- 2.Qxf3#
- 1...Qxg2
- 2.Rh7#
- 1...Qxa7
- 2.Qf3#
- 1...Sxf5
- 2.Qg4#
- 2.Qg5#
- 1...Qe4
- 2.Rh7#
- 1...Qd5
- 2.Rh7#
- 1...Qc6
- 2.Rh7#
- 1...Qa8
- 2.Rh7#
- 1...Qc8
- 2.Rh7#
- 2.Qf3#
- 1...Qb6
- 2.Rh7#
- 2.Qf3#
- 1...Qc7
- 2.Qf3#
- 1...Qd7
- 2.Qf3#
- 1...Qe7
- 2.Qf3#
- 1...Qf7
- 2.Qf3#
- 1...Qg7
- 2.Qf3#
- 1...Qh7
- 2.Rxh7#
- 2.Qf3#
- 1...Qb8
- 2.Rh7#
- 2.Qf3#
- 1...Sf1
- 2.Qg4#
- 2.Qg5#
- 1...Sh1
- 2.Qg4#
- 2.Qg5#
- 1...Se2
- 2.Qg4#
- 2.Qg5#
- 1...Se4
- 2.Qf3#
- 2.Qe2#
- 2.Qg4#
- 1...hxg2!
- 1...Qf3+
- 1.Qe4?
- 1...Qxe4
- 2.Rh7#
- 1...Qxa7
- 2.Qf3#
- 1...Sxf5
- 2.Rg5#
- 2.Qxf5#
- 1...Qd5
- 2.Rh7#
- 1...Qc6
- 2.Rh7#
- 1...Qa8
- 2.Rh7#
- 1...Qc8
- 2.Rh7#
- 2.Qf3#
- 1...Qb6
- 2.Rh7#
- 2.Qf3#
- 1...Qc7
- 2.Qf3#
- 1...Qd7
- 2.Qf3#
- 1...Qe7
- 2.Qf3#
- 1...Qf7
- 2.Qf3#
- 1...Qg7
- 2.Qf3#
- 1...Qh7
- 2.Rxh7#
- 2.Qf3#
- 1...Qb8
- 2.Rh7#
- 2.Qf3#
- 1...Sf1
- 2.Bg4#
- 2.Rg5#
- 1...Sh1
- 2.Bg4#
- 2.Rg5#
- 1...Se2
- 2.Bg4#
- 2.Rg5#
- 1...Sxe4!
- 1...Qxe4
- 1.Qd5?
- 1...Qxd5
- 2.Rh7#
- 1...Qxa7
- 2.Qf3#
- 1...Sxf5
- 2.Rg5#
- 2.Qxf5#
- 1...Qc6
- 2.Rh7#
- 1...Qa8
- 2.Rh7#
- 1...Qc8
- 2.Rh7#
- 2.Qf3#
- 1...Qb6
- 2.Rh7#
- 2.Qf3#
- 1...Qc7
- 2.Qf3#
- 1...Qd7
- 2.Qf3#
- 1...Qe7
- 2.Qf3#
- 1...Qf7
- 2.Qf3#
- 1...Qg7
- 2.Qf3#
- 1...Qh7
- 2.Rxh7#
- 2.Qf3#
- 1...Qb8
- 2.Rh7#
- 2.Qf3#
- 1...Sf1
- 2.Rg5#
- 1...Sh1
- 2.Rg5#
- 1...Se2
- 2.Rg5#
- 1...Se4!
- 1...Qxd5
- 1.Qxb7?
- threat
- 2.Qf3#
- 2.Qh7#
- 1...Sxf5
- 2.Rg5#
- 2.Qf3#
- 1...Se4
- 2.Qh7#
- 1...Bxb7!
- threat
- 1.Qc3?
- 1...Qf3+
- 2.Qxf3#
- 1...Qxa7
- 2.Qf3#
- 1...Sxf5
- 2.Rg5#
- 1...Qh1
- 2.Rh7#
- 2.Qh8#
- 1...Qg2
- 2.Rh7#
- 2.Qh8#
- 1...Qe4
- 2.Rh7#
- 2.Qh8#
- 1...Qd5
- 2.Rh7#
- 2.Qh8#
- 1...Qc6
- 2.Rh7#
- 2.Qh8#
- 1...Qa8
- 2.Rh7#
- 2.Qh8#
- 1...Qc8
- 2.Rh7#
- 2.Qh8#
- 2.Qf3#
- 1...Qb6
- 2.Rh7#
- 2.Qh8#
- 2.Qf3#
- 1...Qc7
- 2.Qf3#
- 1...Qd7
- 2.Qf3#
- 1...Qe7
- 2.Qf3#
- 1...Qf7
- 2.Qf3#
- 1...Qg7
- 2.Qf3#
- 1...Qh7
- 2.Rxh7#
- 2.Qf3#
- 1...Qb8
- 2.Rh7#
- 2.Qh8#
- 2.Qf3#
- 1...Sf1
- 2.Rg5#
- 1...Sh1
- 2.Rg5#
- 1...Se2
- 2.Rg5#
- 1...Se4
- 2.Qf3#
- 1...bxc3!
- 1...Qf3+
- 1.Qe6?
- threat
- 2.Bg4#
- 1...Sxf5
- 2.Rg5#
- 2.Qxf5#
- 1...Qf3+!
- threat
- 1.Rg2?
- Keys
- 1.Qh1!
- 1...Qf3+
- 2.Qxf3#
- 1...Qxh1
- 2.Rh7#
- 1...Qxa7
- 2.Qf3#
- 1...Sxh1
- 2.Rg5#
- 1...Sxf5
- 2.Rg5#
- 1...Qg2
- 2.Rh7#
- 1...Qe4
- 2.Rh7#
- 1...Qd5
- 2.Rh7#
- 1...Qc6
- 2.Rh7#
- 1...Qa8
- 2.Rh7#
- 1...Qc8
- 2.Rh7#
- 2.Qf3#
- 1...Qb6
- 2.Rh7#
- 2.Qf3#
- 1...Qc7
- 2.Qf3#
- 1...Qd7
- 2.Qf3#
- 1...Qe7
- 2.Qf3#
- 1...Qf7
- 2.Qf3#
- 1...Qg7
- 2.Qf3#
- 1...Qh7
- 2.Rxh7#
- 2.Qf3#
- 1...Qb8
- 2.Rh7#
- 2.Qf3#
- 1...Sf1
- 2.Rg5#
- 1...Se2
- 2.Rg5#
- 1...Se4
- 2.Qf3#
- 1...Qf3+
- 1.Qh1!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 1
- ADDED MATES = 8
- REMOVED MATES = 0
- Sets
- Q(i);OGATE,XQ(G)::R(I)
- Q(i);OGATE::R(I)
- Q(i);N_GUARD,SBLOCK,XR(I)::QAB(G)
- Q(i);N_GUARD::QAB(G)
- S(b);::B(F)
- S(b);OGATE,XB(F)::R1(B)
- Tries
- Try
- R(B);
- Vars
- Q(i);OGATE,XQ(G)::R(I)
- Q(i);N_GUARD,SBLOCK,XR(I)::QAB(G)
- S(b);OGATE,XB(F)::R1(B)
- Q(i);OGATE::R(I)
- Q(i);N_GUARD::QAB(G)
- S(b);::B(F)
- Refutation
- P(c);XR(B)
- Try
- R(B);XS(b)
- Threat
- DUALS(2)
- Refutation
- P(e);XR(B)
- Try
- R(I);XQ(i)
- Threat
- DUALS(2)
- Refutation
- B(h);XR(I)
- Try
- Q(G);
- Vars
- Q(i);CHECK,N_GUARD::QAB(G),XQ(i)
- Q(i);OGATE,XQ(G)::R(I)
- Q(i);N_GUARD,SBLOCK,XR(I)::QAB(G)
- Q(i);OGATE::R(I)
- Q(i);N_GUARD::QAB(G)
- Refutation
- P(c);XQ(G)
- Try
- Q(G);
- Vars
- Q(i);OGATE,XQ(G)::R(I)
- Q(i);N_GUARD,SBLOCK,XR(I)::QAB(G)
- Q(i);OGATE::R(I)
- Q(i);N_GUARD::QAB(G)
- Refutation
- S(b);XQ(G)
- Try
- Q(G);
- Vars
- Q(i);OGATE,XQ(G)::R(I)
- Q(i);N_GUARD,SBLOCK,XR(I)::QAB(G)
- Q(i);OGATE::R(I)
- Q(i);N_GUARD::QAB(G)
- S(b);OGATE::R1(B)
- Refutation
- S(b);
- Try
- Q(G);XQ(i)
- Threat
- DUALS(2)
- Vars
- S(b);::QAR2(G)
- Refutation
- B(h);XQ(G)
- Try
- Q(G);
- Vars
- Q(i);CHECK,N_GUARD::QAB(G),XQ(i)
- Q(i);N_GUARD,SBLOCK,XR(I)::QAB(G)
- S(b);OGATE,XB(F)::R1(B)
- Q(i);N_GUARD::QAB(G)
- S(b);OGATE::R1(B)
- S(b);S_CUTQ(i)::QAB(G)
- Refutation
- P(d);XQ(G)
- Try
- Q(G);
- Threat
- B(F)
- Refutation
- Q(i);CHECK
- Try
- Actual
- Q(G);
- Vars
- Q(i);CHECK,N_GUARD::QAB(G),XQ(i)
- Q(i);OGATE,P_PINR(B),XQ(G)::R(I)
- Q(i);N_GUARD,SBLOCK,XR(I)::QAB(G)
- S(b);OGATE,XQ(G)::R1(B)
- S(b);OGATE,XB(F)::R1(B)
- Q(i);OGATE::R(I)
- Q(i);N_GUARD::QAB(G)
- S(b);OGATE::R1(B)
- S(b);S_CUTQ(i)::QAB(G)
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).