MESON Chess Problem Database
Problem Display
PID: 178768 (8/8/8/p7/K1N5/3R4/1PkPnN2/R1b5 w - - 0 1)
Jonsson, Nils Gustav Helmer
Springaren, 1953
#2
7 + 4
| 6490 | yacpdb | 2018 |
SOLUTION
- SOUND
- Sets
- 1...Bxb2
- 2.Se3#
- 1...Bxd2
- 2.Rxd2#
- 1...Sg1
- 2.Rc3#
- 1...Sc3+
- 2.Rxc3#
- 1...Sg3
- 2.Rc3#
- 1...Sd4
- 2.Rc3#
- 1...Sf4
- 2.Rc3#
- 1...Bxb2
- Tries
- 1.Ka3?
- threat
- 2.Se3#
- 1...Bxd2
- 2.Rxd2#
- 1...Bxb2+!
- threat
- 1.Kxa5?
- 1...Bxb2
- 2.Se3#
- 1...Sc3
- 2.Rxc3#
- 1...Sg1
- 2.Rc3#
- 1...Sg3
- 2.Rc3#
- 1...Sd4
- 2.Rc3#
- 1...Sf4
- 2.Rc3#
- 1...Bxd2+!
- 1...Bxb2
- 1.Ka3?
- Keys
- 1.Rb3!
- 1...Sc3+
- 2.Rxc3#
- 1...Bxb2
- 2.Rxb2#
- 1...Bxd2
- 2.Sa3#
- 1...Sg1
- 2.Rc3#
- 1...Sg3
- 2.Rc3#
- 1...Sd4
- 2.Rc3#
- 1...Sf4
- 2.Rc3#
- 1...Sc3+
- 1.Rb3!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 2
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- B(a);SBLOCK,XP(B)::S(G)
- B(a);OGATE,XP(C)::R1(E),XB(a)
- S(c);N_GUARD::R1(E)
- S(c);CHECK,N_GUARD::R1(E),XS(c)
- Tries
- Try
- K(F);P-FLIGHT,P_SPINP(B)
- Threat
- S(G)
- Vars
- B(a);N_PINP(B),OGATE,XP(C)::R1(E),XB(a)
- Refutation
- B(a);CHECK,XP(B)
- Try
- K(F);P-FLIGHT,XP(d)
- Vars
- B(a);SBLOCK,XP(B)::S(G)
- S(c);N_GUARD::R1(E),XS(c)
- S(c);N_GUARD::R1(E)
- Refutation
- B(a);CHECK,XP(C)
- Try
- Actual
- R(E);
- Vars
- S(c);CHECK,N_GUARD::R1(E),XS(c)
- B(a);OGATE,XP(B)::R1(E),XB(a)
- B(a);SBLOCK,XP(C)::S(G)
- S(c);N_GUARD::R1(E)
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).