MESON Chess Problem Database
Problem Display
PID: 260757 (q3B3/4p3/p1N1kp2/3R4/1P5r/K4QB1/3P1n2/1b3rb1 w - - 0 1)
Johner, Hans
Neue Zurcher Zeitung, 1932
#2
8 + 10
| 6490 | yacpdb | 2022 |
SOLUTION
- SOUND
- Sets
- 1...Qb7
- 2.Sd8#
- 1...Qa7
- 2.Sd8#
- 1...Qd8
- 2.Sxd8#
- 1...Rh1
- 2.Sd4#
- 1...Rh2
- 2.Sd4#
- 1...Rh3
- 2.Sd4#
- 1...Rd4
- 2.Sxd4#
- 1...Re4
- 2.Qf5#
- 1...Rh5
- 2.Sd4#
- 1...Rh6
- 2.Sd4#
- 1...Rh7
- 2.Sd4#
- 1...Rh8
- 2.Sd4#
- 1...Ba2
- 2.Qf5#
- 1...Bf5
- 2.Qxf5#
- 1...Qb7
- Tries
- 1.Ra5?
- threat
- 2.Qd5#
- 1...Qxc6
- 2.Qxc6#
- 1...Qd8
- 2.Sxd8#
- 1...Rd4
- 2.Sxd4#
- 1...Re4
- 2.Qf5#
- 1...Rh5
- 2.Sd4#
- 1...Ba2
- 2.Qf5#
- 1...Be4
- 2.Sd4#
- 1...Se4
- 2.Qb3#
- 1...f5!
- threat
- 1.Rc5?
- threat
- 2.Qd5#
- 1...Qxc6
- 2.Rxc6#
- 2.Qxc6#
- 1...Qd8
- 2.Sxd8#
- 1...Rd4
- 2.Sxd4#
- 1...Re4
- 2.Qf5#
- 1...Rh5
- 2.Sd4#
- 1...Ba2
- 2.Qf5#
- 1...Be4
- 2.Sd4#
- 1...Se4
- 2.Qb3#
- 1...f5!
- threat
- 1.Rh5?
- threat
- 2.Qd5#
- 1...Qxc6
- 2.Qxc6#
- 1...Rxh5
- 2.Sd4#
- 1...Qd8
- 2.Sxd8#
- 1...Rd4
- 2.Sxd4#
- 1...Re4
- 2.Qf5#
- 1...Ba2
- 2.Qf5#
- 1...Be4
- 2.Sd4#
- 1...Bf5
- 2.Qxf5#
- 1...Se4
- 2.Qb3#
- 1...f5!
- threat
- 1.Ra5?
- Keys
- 1.Rg5!
- threat
- 2.Qd5#
- 1...Qxc6
- 2.Qxc6#
- 1...fxg5
- 2.Qf7#
- 1...f5
- 2.Rg6#
- 1...Qd8
- 2.Sxd8#
- 1...Rd4
- 2.Sxd4#
- 1...Re4
- 2.Qf5#
- 1...Ba2
- 2.Qf5#
- 1...Be4
- 2.Sd4#
- 1...Bf5
- 2.Qxf5#
- 1...Se4
- 2.Qb3#
- threat
- 1.Rg5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 5
- REMOVED MATES = 9
- Sets
- Q(j);N_GUARD::S(G)
- Q(j);N_GUARD::S(G),XQ(j)
- R(e);N_GUARD::S(G)
- R(e);N_GUARD::S(G),XR(e)
- R(e);S_CUTB(a)::QAB1(C)
- B(a);N_GUARD::QAB1(C)
- B(a);N_GUARD::QAB1(C),XB(a)
- Tries
- Try
- R(F);
- Threat
- QAB1(C)
- Vars
- Q(j);OGATE,XS(G)::QAR2(C),XQ(j)
- Q(j);N_GUARD::S(G),XQ(j)
- R(e);N_GUARD::S(G),XR(e)
- R(e);S_CUTB(a)::QAB1(C)
- R(e);N_GUARD::S(G)
- B(a);N_GUARD::QAB1(C)
- B(a);S_CUTR(e)::S(G)
- S(d);S_CUTR(e)::QAB(C)
- Refutation
- P(h);
- Try
- R(F);
- Threat
- QAB1(C)
- Vars
- Q(j);N_GUARD::S(G),XQ(j)
- R(e);N_GUARD::S(G),XR(e)
- R(e);S_CUTB(a)::QAB1(C)
- R(e);N_GUARD::S(G)
- B(a);N_GUARD::QAB1(C)
- B(a);S_CUTR(e)::S(G)
- S(d);S_CUTR(e)::QAB(C)
- Refutation
- P(h);
- Try
- R(F);
- Threat
- QAB1(C)
- Vars
- Q(j);OGATE,XS(G)::QAR2(C),XQ(j)
- R(e);N_GUARD,XR(F)::S(G)
- Q(j);N_GUARD::S(G),XQ(j)
- R(e);N_GUARD::S(G),XR(e)
- R(e);S_CUTB(a)::QAB1(C)
- B(a);N_GUARD::QAB1(C)
- B(a);S_CUTR(e)::S(G)
- B(a);N_GUARD::QAB1(C),XB(a)
- S(d);S_CUTR(e)::QAB(C)
- Refutation
- P(h);
- Try
- Actual
- R(F);
- Threat
- QAB1(C)
- Vars
- Q(j);OGATE,XS(G)::QAR2(C),XQ(j)
- P(h);OGATE,XR(F)::QAB1(C)
- P(h);OGATEB::R(F)
- Q(j);N_GUARD::S(G),XQ(j)
- R(e);N_GUARD::S(G),XR(e)
- R(e);S_CUTB(a)::QAB1(C)
- B(a);N_GUARD::QAB1(C)
- B(a);S_CUTR(e)::S(G)
- B(a);N_GUARD::QAB1(C),XB(a)
- S(d);S_CUTR(e)::QAB(C)
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).